CORTECH INC
PRRN14A, 1998-06-10
PHARMACEUTICAL PREPARATIONS
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                            SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934
                                (Amendment No. )

Filed by the Registrant |_|
Filed by a Party other than the Registrant |X|

Check the appropriate box:

|X| Preliminary Proxy Statement
|_| Definitive Proxy Statement
|_| Definitive Additional Materials
|_| Soliciting Material Pursuant to Rule 14a-11(c) or Rule 14a-12


                                 Cortech, Inc.
- --------------------------------------------------------------------------------
                (Name of Registrant as Specified In Its Charter)

                      Asset Value Fund Limited Partnership
- --------------------------------------------------------------------------------
                   (Name of Person(s) Filing Proxy Statement)

Payment of Filing Fee (Check the appropriate box):

|_| $125 per Exchange Act Rule 0-11(c)(1)(ii), 14a-6(i)(1) or 14a-6(j)(2).
|_| $500 per each party to the controversy pursuant to
    Exchange Act Rule 14a-6(i)(3).
|_| Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11.
|X| No fee required

1) Title of each class of securities to which transaction applies:

   Common Stock
   -----------------------------------------------------------------------------

2) Aggregate number of securities to which transaction applies:

   -----------------------------------------------------------------------------

3) Per unit price or other underlying value of transaction computed
   pursuant to Exchange Act Rule 0-11:*

   -----------------------------------------------------------------------------

4) Proposed maximum aggregate value of transaction:

   -----------------------------------------------------------------------------

|_| Check box if any part of the fee is offset as provided by
    Exchange Act Rule 0-11(a)(2) and identify the filing for which
    the offsetting fee was paid previously.  Identify the previous
    filing by registration statement number, or the form or schedule
    and the date of its filing.

    1) Amount previously paid:
                               -------------------------------------------------
    2) Form, Schedule or Registration No.
                                         ---------------------------------------

    3) Filing party:
                    ------------------------------------------------------------

    4) Date filed:
                    ------------------------------------------------------------

___________
*Set forth the amount on which the filing fee is calculated and state how it was
 determined.

(032796DTI)

<PAGE>

   
REVISED PRELIMINARY OPPOSITION PROXY STATEMENT                     June __, 1998
    

                         ANNUAL MEETING OF STOCKHOLDERS
                  OF CORTECH, INC. ("Cortech" or "the Company")

             ASSET VALUE FUND LIMITED PARTNERSHIP ("Asset Value 1")
                        (a Delaware limited partnership)
   

     This Proxy  Statement  and the enclosed  white proxy card are being sent by
Asset Value on or about __________,  1998 in connection with its solicitation of
proxies at the Annual Meeting of Stockholders being held by Cortech at [time and
place] ( the "Meeting").  Asset Value and two other investors own  approximately
15% of the outstanding common stock of Cortech ("Cortech Stock"), making them by
far the largest  stockholders.  At the Meeting,  Cortech management  proposes to
elect its two nominees to the Board of Directors  and to ratify the selection of
Arthur Andersen LLP as Cortech's  independent  auditors.  Asset Value favors the
selection  of Arthur  Andersen  LLP but  opposes the  election  of  management's
nominees to the Board.

     Under the Certificate of Incorporation and Bylaws currently in effect,  the
Cortech  board has five members  whose terms are  staggered so that no more than
two terms expire in any one year. A staggered board,  sometimes referred to as a
classified  board,  is an  obstacle  to gaining  control of the Board in any one
year.  Asset Value seeks to gain  control of Cortech at the Meeting by proposing
to amend the Bylaws to increase the number of directors  from five to seven (the
"Board Amendment") and subject to the approval of the Board Amendment,  to elect
its four nominees as directors  (the two vacancies  available  under the current
Bylaws  plus the two  vacancies  created by the Board  Amendment).  If the Board
Amendment is approved  and all of Asset  Value's  nominees  are  elected,  Asset
Value's  nominees will constitute a majority of the Board and therefore  control
of Cortech will transfer to Asset Value.
    

     If the Board  Amendment is not approved,  Asset Value will seek to have two
of its nominees elected as directors in opposition to Management's  nominees for
the two vacancies  available under the Bylaws  currently in effect.  Asset Value
will  vote  for  the  ratification  of  Arthur  Andersen  LLP as  the  Company's
independent auditors, for the Board Amendment and for its nominees.

     The close of business on ___________, 1998 has been fixed by the Company as
the record  date in  determining  the number of shares  eligible  to vote at the
Meeting.  A copy of this Proxy  Statement and white Proxy Card will be mailed to
all stockholders entitled to vote at the Annual Meeting.

     In  reliance  upon  Rule  14a-5(c)  of  the  Securities and Exchange Act of
1934 2, reference is made to management's  proxy statement which  is  being sent
to you by the Company for a full
- --------
        1 Asset Value is a Delaware limited partnership which is wholly-owned by
Kent Financial  Services,  Inc., a Delaware  corporation  ("Kent") the shares of
which are  publicly  traded on NASDAQ  under the symbol  KENT.  Asset  Value was
organized  in  September,  1990 for the  purpose  of  investing  in  securities,
principally marketable securities.  Additional information about Asset Value and
its  management  and about  Kent and the names of its  officers,  directors  and
controlling  stockholders and their ownership interests is presented on Schedule
1 of this Proxy Statement.

        2 Rule 14a-5(c)  provides that "any  information  contained in any other
proxy  soliciting  material which as been furnished to each person  solicited in
connection with the same meeting or subject matter may be omitted from the proxy
statement,  if a clear reference is made to the particular  document  containing
such information."


<PAGE>



description of management's  proposals,  as well as information  with respect to
the number of shares  eligible to vote at the  Meeting,  the quorum,  the record
date, the securities  ownership of the Company,  information about the Company's
officers  and  directors,   including   compensation,   information   about  the
ratification of the  appointment of Arthur Andersen LLP as independent  auditors
and the date by which  stockholders  must submit  proposals for inclusion in the
next annual meeting.

PLEASE READ THE FOLLOWING  MATERIAL WITH CARE BECAUSE WE BELIEVE THAT  CORTECH'S
FUTURE DEPENDS ON YOUR VOTE.

WE URGE YOU TO VOTE:

FOR THE BOARD AMENDMENT (which will add two vacancies on the Board.)

FOR ALL OF ASSET VALUE'S NOMINEES (which in combination with the Board Amendment
would effect a change of control to Asset Value)

   
     We are seeking your vote because we believe  that the  incumbent  Board has
exercised poor judgment in governing Cortech.

     At the end of fiscal  1997,  Cortech  had net assets of only $15.4  million
after  losing  over $70  million  since  1993 in a  failed  attempt  to  exploit
Cortech's  technology.  The Board then proceeded to expend $673,000 of Cortech's
limited  resources  promoting a merger with  Biostar,  Inc.  (the  "Merger"),  a
company  with a $5.6  million  negative net worth even though Asset Value warned
the  Board  from  the  start  that  the  Merger  was  not  in the  interests  of
stockholders3 who, Asset Value said, would never approve such a transaction. The
Merger was canceled on May 7,1998.  Within two weeks,  Kenneth Lynn,  the former
CEO, left Cortech,  taking with him, what we would call, a "departure  bonus" of
almost $500,000, another 3.5% of Cortech's remaining cash of $14.3 million.
    
         We ask you. What will this Board do next? Don't take a chance.
                               Vote for a change.
                        Vote for Asset Value's nominees!



- --------
   
        3 Asset Value has not retained an independent  financial adviser and its
conclusions  are  solely  based  on the  opinion  of its  manager,  Asset  Value
Management,  Inc. which was reached after reviewing  management's proxy material
for the Merger, including the opinion of management's financial adviser.
    
                                                      
<PAGE>



                                  MORE RED INK!
   
     After the  termination  of the  Merger,  Cortech's  Form 10-Q for the first
quarter of 1998 revealed that Cortech's  losses not only continued but increased
compared to last year. In a quarter with No research and development  activities
and No revenues,  Cortech still had  approximately  15 full-time4  employees and
general  and  administrative  expenses of  $1,522,000,  of which,  according  to
Cortech, merger expense only accounted for approximately $673,000.

                         TIME AND MONEY ARE RUNNING OUT!

     On May 18, 1998, CEO Kenneth Lynn left Cortech. We believe that Mr Lynn was
made a scapegoat for what we think is Cortech's prior mismanagement.  But in our
opinion, Mr. Lynn was a symptom of what is wrong with Cortech not the source, at
least, in our view, not the only source.  In the past five years  (including the
first quarter of 1998),  Cortech has lost over $70 million,  and as of March 31,
1998, had cash of only $14.3 million.  We ask, does Lynn's departure absolve the
Board of their  responsibility  for  these  losses?  We think  the  answer  is a
resounding No!


                   PICTURE OF HOUR GLASS WITH CONTENTS READING


                                                         CASH REMAINING AT
                                                          MARCH 31, 1998
                                                           $14.3 million





                                                          LOSSES INCEPTION 
                                                              TO DATE
                                                            $86 million!!!



    

- --------
        4 Cortech  does not  disclose  whether  there are  additional  part-time
employees and consultants still hanging on.

                                                        

<PAGE>

   

               The question we believe you should ask yourself, is

                 ARE YOU BETTER OFF NOW THAN YOU WERE FIVE YEARS
                                      AGO?

     In what we think is the  biggest  bull  market in  history,  Cortech  Stock
prices  have  declined  from $18.25 per share in 1993 to $.50 per share in 1998,
making Cortech, by any comparison,  in our view, one of the poorest stock market
performers during this period. --AND THAT'S NO BULL!


                COMPARISON OF CORTECH'S STOCK PERFORMANCE (NASDAQ
           SYMBOL-CRTQ) TO THE DOW JONES INDUSTRIAL AVERAGE (DJII) AND
                THE STANDARD AND POOR'S 500 COMPOSITE INDEX (S&P)

 [GRAPH THE ABOVE]

<TABLE>
<CAPTION>

                                    
                    DJII               S&P            Cortech
                   ------             -----          ---------
<S>                <C>               <C>             <C>
1993               3820.77            469.90         $18.25

1994               3867.41            460.68          14.25

1995               5181.43            616.71           3.65625

1996               6544.09            748.03           3.8125

1997               7908.25            970.43           2.03125

1998               9037.71           1113.86            .50

</TABLE>
                              NOT A PRETTY PICTURE!
    

<PAGE>


   
     Shortly  before the Merger was  canceled,  Cortech  announced  that Cortech
Stock would be delisted from NASDAQ.5  Management  concedes that "the absence of
the NASDAQ National Market listing for the Company's Common Stock [will] have an
adverse  effect on the market  for,  and  potentially  the market  price of, the
Company's Common Stock."
    
                                NOW YOU TELL US!
   
     After speaking to a representative  of NASDAQ and after reviewing  NASDAQ's
rules for listing,  Asset Value concluded that the Board should have known prior
to the date of the Merger  Agreement in December of 1997,  that  Cortech  Common
Stock would be delisted  irrespective  of the Merger.  This fact alone, in Asset
Value's  view,  should have caused the Board to reject the Merger with  BioStar.
Once Cortech is delisted,  to be reinstated it must comply with requirements for
new  listings  which  have much  higher  standards  than the  standards  for the
maintenance of a listing. Asset Value has no magic bullet to rectify the limited
marketability of Cortech shares  anticipated as a result of the delisting except
to give  priority to suitors with  financial  attributes  that would satisfy the
listing  requirements upon a combination with Cortech. Of course there can be no
assurance that such a combination can be achieved.
    

              THIS BOARD ACTS LIKE THEIR VOICE IS THE ONLY CHOICE.

         "WHO CARES WHAT OWNERS THINK? Who owns American companies? The
     management, of course. Shareholders are tolerated, but managers rule.6"

   
                              TOO LITTLE, TOO LATE

     Seven months after Asset Value first asked for representation on the Board;
long after the Board was sued for misfeasance;  after Cortech had spent $673,000
on the failed Merger; after Cortech had lost another  approximately $3.4 million
from operations (from September 30, 1997 through March 31, 1998), finally on May
11, 1998 the Cortech  Board  expressed an interest in meeting with Asset Value's
manager,  Paul Koether7. By this time, Asset Value had already spent significant
amounts of its own funds in opposing  the Merger and in securing  control of the
Board
- --------
        5 Cortech is currently appealing the NASDAQ ruling.

        6  Market Watch, New York Times,  3/8/98,  Floyd Norris.  This quote has
been made without the permission of the New York Times or Mr. Norris.

        7 Prior to the  announcement  of the Merger,  Asset Value sought to have
its principal officer, Paul O. Koether,  elected as a Cortech director to assist
in the  redirection  of Cortech's  assets.  Although  the Cortech  Board did not
reject our  request,  it did not  acquiesce  either.  In our view,  it dithered,
deferred and delayed and finally,  without any further personal contact with its
largest stockholder,  Cortech announced the BioStar transaction.  Only after the
Merger failed did Cortech's  president,  Kenneth Lynn finally  telephone Paul O.
Koether.  Mr. Lynn was told that Asset  Value,  among other  things,  wished the
Board to cancel the poison  pill and to  declassify  the Board  which,  in Asset
Value's  opinion,  would  restore  corporate  democracy and  potentially  entice
prospective acquirers.

                                                        

<PAGE>



because it believed that a change in course for Cortech was absolutely essential
and because it believed  that a Board  controlled  by the  incumbents  would not
embrace the  necessary  changes.  Asset Value  thought that the Board's offer to
meet, in and of itself, was too little too late.

     Asset  Value was  willing  to meet only if the Board  would  first take the
following  steps which,  in the view of Asset Value,  would enhance  stockholder
value and stockholder  democracy : 1) lift the Poison Pill; 2) amend the By-laws
to allow stockholders owning 10% or more to call a special meeting; 3) eliminate
the current  classification  of the Board so that all directors  would stand for
election at the upcoming  meeting and 4) elect three Asset Value  nominees which
would constitute a majority of the current five person Board.

     Supporters of classified  boards and poison pills claim that they are tools
for  directors  to  resist  takeovers  that they  deem  unfair to  stockholders.
Whatever the justification for classified boards and poison pills in general, in
the case of Cortech,  Asset Value believes that they have served only to prevent
competition for control.  Moreover, in Asset Value's view, this Board's approval
of the Biostar  transaction  exemplifies how these "tools" can be misused in the
hands of directors who have bad judgment.

     The Board's response to Asset Value was a three page letter, the essence of
which, in the opinion of Asset Value, was


                               SAME OLD; SAME OLD

     The  Board  was  willing  to  discuss  the  declassification  of the  Board
(permitting  all  directors  to be  elected  in one  year)  but  wanted to defer
consideration of the other issues until after a new Board was elected. The Board
wished to submit to the  stockholders  a slate of nominees  which  consisted  of
current  Board  members  as  well  as  members   representing   certain  unnamed
"significant  stockholder  constituencies".  Under the Board's  proposal,  Asset
Value believes that the new Board,  once fortified with nominees of "significant
stockholders"  would get together after the election to decide issues that could
have been decided at the Meeting by all stockholders.

     The Board said that it  "...embraced  [Asset  Value's] call for stockholder
democracy and [had] a genuine interest in avoiding a costly proxy fight" and was
prepared to let  stockholder  democracy  determine the course of future  events.
Asset Value took the Board at its word and responded  that Asset Value wanted to
join the Board in presenting all disputed issues for  consideration in one joint
proxy  statement.  This course  would,  in the view of Asset  Value,  permit all
stockholders,  large and  small,  to have a voice in  determining  the future of
Cortech  without  incurring  the cost of a proxy  contest.  Asset Value told the
Board that it believed  that the addition of two or three new voices would [not]
necessarily  add up to new  leadership  for  the  company.  Instead  conflicting
opinions among Board members could leave the Company  directionless at a crucial
crossroad in its history.  In its view,  stockholders would now be better off if
the Board consisted of a majority of the Board's nominees or a majority of Asset
Value's  nominees  rather  than an  amalgamation  of the two. In any event Asset
Value  said  that the  slates of each side  ought to be  presented  in one proxy
statement so that stockholders  could make that choice  themselves.  Asset Value
also offered to pay its share of the cost of the proxy solicitation.

<PAGE>


     To date the Board has not  answered  whether it is  prepared  to join Asset
Value and let stockholders determine their destiny.
    

                               STOP THE RED INK!
   
     Asset Value  considers a shutdown of Cortech an  alternative  which must be
considered,  particularly in view of the continued  losses reported in the first
quarter of 1998.  Such a course  however,  has  risks,  including  the  possible
further  diminishment of Cortech's  technology and the cessation of Cortech as a
going concern. The matter would be further evaluated with current employees once
Asset Value gained control,  therefore, there is no assurance that Cortech would
be shut down.

     Asset Value can only give stockholders the assurance that its nominees will
try to further reduce Cortech's expenses and will move as quickly as possible to
secure a merger partner. Expenses that will be particularly scrutinized for cuts
are any part-time employees or consultants and employees engaged in any activity
other than  caretaking.  The new Board would seek to reduce,  if  possible,  any
professional  fees  unrelated  to seeking a  strategic  partner.  Asset  Value's
nominees have pledged to take no fees for serving as directors.

     Asset Value has promised not to seek to merge Cortech with any affiliate or
entity in which Asset Value is an investor.  Asset Value intends to benefit from
its Cortech investment only to the same extent other stockholders benefit.
    
                          THE SHAPE OF THINGS TO COME 8
   
     So, what will Asset Value do if it obtains control of the Cortech Board? We
believe that once the Cortech Board determined to change control of Cortech,  it
should have sought competitive transactions more aggressively, by advertising in
the financial media, by engaging an investment banker from the outset to solicit
merger  partners and by publicly  stating that the Board was  conducting an open
bidding process for control of Cortech.  If elected Asset Value's  nominees will
take these  steps.  Asset Value has no specific  merger  partner in mind and has
considered possible alternatives for the future of Cortech only in a preliminary
way. In the course of its own business,  however, Asset Value constantly reviews
investment  opportunities and in connection with this process has seen companies
which might be attractive  strategic  partners for Cortech  although  additional
analysis would be required to determine whether any of these companies are a fit
with Cortech.

     The  principal  standards  for seeking a candidate  would be balance  sheet
quality and positive earnings.  Asset Value also believes that a private company
which seeks a public market or a public company which needs Cortech's  assets to
qualify  for  NASDAQ,  would  consider  these  attributes  as  well  as  cash in
calculating  Cortech's value. Asset Value is not sure,  however,  that there are
potential  acquisitions  or mergers that would be  attractive  for Cortech.  One
thing is certain however, Asset
- --------
        8 H.G. Wells

                                                     

<PAGE>



Value will not seek to merge Cortech with any affiliate or entity in which Asset
Value is an investor. Asset Value intends to benefit from its Cortech investment
only to the same extent other stockholders benefit.
    

WARNING: "Those who cannot remember the past are condemned to repeat it."9

     In our  opinion,  several  individuals  and  entities,  other then  Cortech
stockholders  would have  reaped the  benefits of the Merger  with  BioStar.  We
believe  that Mr.  Lynn stood to benefit  from the Merger  because it would have
triggered his golden  parachute  ($1,300,000  for him and others with  severance
agreements) and enabled him (and other Board members and executive  officers) to
exercise 623,535 options.  BioStar's  management would have received  additional
compensation  and options in  connection  with the Merger.  In fact, it seems to
Asset Value,  that every  participant  was to profit from the Merger  except the
public stockholders of Cortech, who would have suffered a dilution in book value
per  Cortech  share of 64% (from an  historical  $.83 to a pro forma $.30) while
BioStar  stockholders  would have enjoyed an  improvement  in book value from an
historical negative ($2.86) to a positive $.17 per share.

                              PLEASE ASK YOURSELF:
                 DO YOU WANT THE BOARD MEMBERS WHO APPROVED THE
               BIOSTAR MERGER TO SELECT THE NEXT MERGER CANDIDATE
                                  FOR CORTECH?
   
                  WE THINK YOUR ANSWER WILL BE:  CERTAINLY NOT!

PLEASE SEND THE WHITE  PROXY CARD TO ASSET VALUE AND VOTE TO INCREASE  THE BOARD
AND TO ELECT ALL OF ASSET VALUE'S NOMINEES.

     Remember,  Asset Value will not merge Cortech with an Asset Value affiliate
or a company in which Asset  Value is a  stockholder.  Asset  Value  believes it
should gain from any future  acquisition or Merger involving Cortech only to the
extent all  stockholders  benefit.  Asset  Value's  nominees have pledged not to
accept any fees for serving as directors.
    

                             IT'S TIME FOR A CHANGE.
                                VOTE FOR CHANGE.
                              VOTE FOR ASSET VALUE.






- --------
        9 The Life of Reason, (1905) George Santayana

                                                        

<PAGE>



                                   PROPOSAL 1

                                INCREASE IN BOARD

     Asset  Value is asking for your  support  to  approve a  proposal  to amend
Article 3 Section 3.1 of the Bylaws of Cortech to set the number of directors to
serve on the Board of Directors at seven. The affirmative vote of a plurality of
the votes present in person or  represented by proxy and entitled to vote at the
meeting are required to approve this proposal.

     Asset  Value urges you to vote FOR the  approval  of the  proposal to amend
Article 3 Section 3.1 of the Bylaws of Cortech to set the number of directors to
serve on the Board of Directors at seven.

                                   PROPOSAL 2

                              ELECTION OF DIRECTORS

     Asset Value is asking for your support to elect its nominees. Under Article
II, Section 2.2 of the Company's  Bylaws,  to bring  business  before the annual
meeting,  a stockholder  must provide  timely,  written  notice to the secretary
describing  the  business  and  providing  information  about  the  stockholder,
including name and address and beneficial  ownership.  The affirmative vote of a
plurality of the votes present in person or represented by proxy and entitled to
vote at the  meeting are  required  to elect each of the Asset  Value  nominees.
Information  about  management's  nominees,  including  beneficial  ownership of
Cortech Shares and  compensation  can be found in management's  proxy statement.
The biographical data,  including age, principal  occupation or employment,  and
other  affiliations  and business  experience of each Asset Value nominee during
the last five years follows:

     Paul  O.  Koether,   age  61,  is  principally  engaged  in  the  following
businesses:  (i) as Chairman  and  director  of Kent  Financial  Services,  Inc.
("Kent")  since  July 1987 and  President  since  October  1990 and the  general
partner since 1990 of Shamrock  Associates,  an investment  partnership which is
the principal  stockholder of Kent and (ii) various positions with affiliates of
Kent,  including Chairman since 1990 and a registered  representative since 1989
of T. R. Winston & Company,  Inc. ("Winston") and since July 1992, a director of
American Metals  Service,  Inc.,  ("AMS") which was an indirect,  majority-owned
subsidiary of Kent before its shares were  distributed  to Kent's  stockholders.
Mr. Koether also has been Chairman  since April 1988,  President from April 1989
to February  1997 and director  since March 1988 of Pure World,  Inc.,  formerly
American  Holdings,  Inc.,  ("Pure  World") and since  December  1994 has been a
director and since January 1995 has been Chairman of Pure World's majority-owned
subsidiary,  Madis Botanicals, Inc., ("Madis") a manufacturer and distributor of
natural  products.  He is also Chairman and a director of Pure World's principal
stockholder,  Sun Equities  Corporation,  ("Sun") a private company. Mr. Koether
served as Chairman and a director of NorthCorp Realty  Advisors,  Inc., an asset
management  company,  ("NorthCorp")  from June 1992 when it was acquired by Pure
World until August, 1994 when it was merged and renamed Crown NorthCorp, Inc.



                                                    
<PAGE>



     Mark W. Jaindl, age 37, is the President and Chief Executive Officer of the
American Bank of the Lehigh Valley,  a commercial  bank. He has served as Senior
Vice  President  of Pure  World  from June 1992 until May 1995 and as a director
since  October  1994.  He was Senior Vice  President of Madis from December 1994
until May 1995 and a director of Madis since  December 1994 and he has served as
a director of AMS since July 1992.  Mr. Jaindl was a director of NorthCorp  from
June 1992 until  September  1994 and was Interim  President  of  NorthCorp  from
February  1994 until August 1994.  From May 1982 to October 1991 and again since
May 1995 he has  served as Chief  Financial  Officer of Jaindl  Farms,  which is
engaged in  diversified  businesses,  including  the  operation of a 12,000-acre
turkey farm, a mobile home park, a John Deere  dealership and a grain operation.
Mr. Jaindl also served as the Chief Financial Officer of Jaindl Land Company,  a
developer  of  residential,  commercial  and  industrial  properties  in eastern
Pennsylvania.

     John  W.  Galuchie,  Jr.,  age  45,  a  certified  public  accountant,   is
principally engaged in the following businesses: (i) Winston, as President since
January 1990 and director since September 1989; (ii) Kent, in various  executive
positions since 1986 and a director from June 1989 until August 1993; (iii) Pure
World, as Executive Vice President since April 1988,  director from January 1990
until  October 1994 and for more than five years as Vice  President and director
of Sun; (iv) AMS as Vice  President,  Treasurer and a director  since July 1992.
Mr.  Galuchie  served as a director  of Crown  NorthCorp,  Inc.,  the  successor
corporation to NorthCorp from June 1992 to August 1996.

     James L.  Bicksler,  age 60,  is a  Professor  of  Economics  and  Finance,
Graduate School of Management,  Rutgers University, a position he has held since
1969.

     Asset Value urges you to vote FOR the nominees  described above.  They will
seek to maximize  stockholder  values and pledge to cooperate  with and consider
the proposals of other stockholders.

     If more than a  majority  of Cortech  Shares  present by proxy or in person
vote in favor of amending the Bylaws to increase the number of directors,  there
will be four vacancies on the Board and the four nominees  receiving the highest
vote (whether Asset Value's  nominees or management's  nominees) will be elected
to the Board.  If all of Asset  Value's  nominees  are  elected,  Asset  Value's
nominees  will  constitute  a majority of the Board and control of Cortech  will
transfer to Asset Value.

     If the Board  Amendment is not approved,  the two nominees  (whether  Asset
Value's nominees or Management's nominees) receiving the highest number of votes
cast at the meeting will be elected.  Asset Value makes no provision  for voting
for management's  nominees,  therefore if you vote for only one of Asset Value's
nominees,  you will not have an  opportunity to vote for a candidate to fill the
other vacancy to the Board.

     Even if you have voted against  increasing  the Board please vote for Asset
Value's  nominees.  The nominees  receiving the highest  number of votes will be
elected.  If the Board  Amendment is not approved two of Asset Value's  nominees
can still be elected if their votes exceed the votes for Management's  nominees.
If the Bylaw Amendment is approved,  management's  nominees can still be elected
to two  vacancies if their votes exceed the votes of any of the four Asset Value
nominees.

                                                   

<PAGE>



Therefore if you agree that it is time for a change, VOTE


                           YES to the Board Amendment
                                       and
                           FOR Asset Value's nominees

                                   PROPOSAL 3

                       RATIFICATION OF INDEPENDENT AUDITOR

     Information  about the  ratification of Arthur Andersen LLP can be found in
management's  proxy  statement.  Asset Value favors the  ratification  of Arthur
Andersen LLP as Cortech's independent auditor.

                       REQUIRED VOTE AND MANNER OF VOTING

     If more than a  majority  of Cortech  Shares  present by proxy or in person
vote in favor of the Board Amendment,  there will be four vacancies on the Board
and the four nominees receiving the highest vote (whether Asset Value's nominees
or management's nominees) will be elected to the Board. If the increase in Board
members is not approved  the two nominees  (whether  Asset  Value's  nominees or
Management's nominees) receiving the highest number of votes cast at the meeting
will be elected.  If more than a majority of shares of Cortech  Shares voting at
the  Meeting  vote for the  ratification  of Arthur  Andersen  LLP as  Cortech's
independent  auditor,  this  proposal  will be approved.  Information  about the
quorum and voting for management's  proposals can be found in management's proxy
statement.

     Valid proxies will be voted as instructed therein,  but absent instructions
on the white proxy card,  will be voted FOR the Bylaw  amendment  to enlarge the
Board, FOR Asset Value's  nominees,  and FOR the ratification of Arthur Anderson
LLP and in the  discretion  of the proxies on any other matter that comes before
the  Meeting  except  that  proxies  will not be voted on another  matter  which
becomes  known a  reasonable  time before the  Meeting.  Abstentions  and broker
non-votes  (where a  nominee  holding  shares  for a  beneficial  owner  has not
received voting  instructions  from the beneficial owner on a particular  matter
and the nominee does not vote the shares)  will be counted in the  determination
of a quorum but will not be counted for or against any proposal.  We urge you to
sign, date and return the white proxy card in the enclosed envelope.  No postage
is required if mailed in the United States.




<PAGE>



                              SHARES IN STREET NAME

     If you hold your  Cortech  Shares in the name of a brokerage  firm or bank,
your broker or banker cannot vote the Shares until the broker or banker receives
specific  instructions  from you. Please contact the party at the brokerage firm
or bank  responsible  for your account to make sure that a proxy is executed for
your Cortech Shares on the white proxy card.


                              REVOCATION OF PROXIES

     If you have executed  management's  **** proxy card before  receiving  this
Proxy Statement, you have every right to change your vote by signing, dating and
returning the enclosed white proxy card in the postage-paid  envelope  provided.
Only your latest dated proxy will count at the Meeting. Any proxy, including the
proxy  solicited  hereby,  may be revoked at any time  before it is voted by (i)
submitting a duly  executed  proxy  bearing a later date to the Secretary of the
Company or to Asset  Value,  (ii)  filing  with the  Secretary  of the Company a
written revocation or (iii) attending and voting at the Meeting in person.


                              SOLICITATION EXPENSE

     Asset Value,  Mark W. Jaindl and  Frederick J. Jaindl (see Schedule 1) will
bear the cost of preparing,  assembling  and mailing the enclosed form of proxy,
this proxy  statement and other  material which may be sent to  stockholders  in
connection with this solicitation. Officers and regular employees of Asset Value
or its affiliates may solicit proxies by mail, telephone,  telegraph,  facsimile
and personal  interview,  for which no additional  compensation will be paid. In
addition, Asset Value has retained Beacon Hill Partners, Inc. ("Beacon Hill") to
solicit proxies on its behalf. In connection with the solicitation in opposition
to  Cortech,  Asset  Value has  agreed to pay  Beacon  Hill up to  $15,000  plus
expenses,  part of which is a success  fee.  Asset  Value  advanced  Beacon Hill
$3,000 to cover  expenses.  It is  anticipated  that the cost to Asset  Value in
connection with this solicitation will be approximately $50,000.


                                            Very truly yours,


                                            Paul O. Koether
                                            Asset Value Fund Limited Partnership







<PAGE>


                                    IMPORTANT

     If your shares are held in "Street  Name" only your bank or broker can vote
your shares, and only upon receipt of your specific instructions. Please contact
the person  responsible  for your account and  instruct  them to execute a white
proxy card as soon as possible.

     If you have any questions or need further assistance in voting, please call
John W. Galuchie,  Jr., of Asset Value Fund Limited Partnership collect at (908)
234-1881, or our proxy solicitor:

                           BEACON HILL PARTNERS, INC.
                                 90 BROAD STREET
                            NEW YORK, NEW YORK 10004
                                 (800) 253-3814


                                                     

<PAGE>





                                                                      SCHEDULE 1



              ADDITIONAL INFORMATION ABOUT ASSET VALUE FUND LIMITED
               PARTNERSHIP, MARK W. JAINDL AND FREDERICK J. JAINDL


     Asset  Value  Fund  Limited  Partnership  ("Asset  Value")  is  engaged  in
investing in securities.  The sole general partner of Asset Value is Asset Value
Management,  Inc.  ("Asset  Value  Management").  Asset  Value  Management  is a
wholly-owned  subsidiary  of  Kent  Financial  Services,  Inc.  ("Kent"),  whose
principal  business is the operation of T. R. Winston & Company,  Inc.  ("TRW"),
its wholly-owned  subsidiary.  TRW is a securities broker-dealer registered with
the National  Association of Securities  Dealers,  Inc. Asset Value, Asset Value
Management,  Kent and TRW maintain offices at 376 Main Street,  Bedminster,  New
Jersey 07921.

     Mark W. Jaindl ("Mark Jaindl") is the President and Chief Executive Officer
of the American Bank of the Lehigh  Valley,  a commercial  bank whose  principal
business  address is 4029 West Tilghman Street,  Allentown,  PA 18104 ("American
Bank"). (For additional  information on Mark Jaindl, see PROPOSAL 1, ELECTION OF
DIRECTORS.) Frederick J. Jaindl ("Fred Jaindl") is the sole proprietor of Jaindl
Farms (turkey  farming),  whose  principal  business  address is 3150 Coffeetown
Road,  Orefield,  PA 18069.  Fred Jaindl is Chairman of American Bank.  Mark and
Fred Jaindl are the principal  stockholders of American Bank. Mark Jaindl is the
son of Fred Jaindl.

     As of March  23,  1998,  Asset  Value  holds  2,000,000  Cortech  Shares or
approximately 10.80% of the total Cortech Shares outstanding.  Mark Jaindl holds
250,000 Cortech  Shares,  or  approximately  1.35% and Fred Jaindl holds 520,000
Cortech Shares or approximately  2.80%. Asset Value, Mark Jaindl and Fred Jaindl
disclaim the beneficial ownership of each other's Cortech Shares.  Purchases and
sales of Cortech  Shares by Asset Value,  Mark Jaindl and Fred Jaindl are listed
on Schedule 2.

     During the past ten years, none of Asset Value,  Mark Jaindl,  Fred Jaindl,
Asset Value  Management,  Kent, TRW, or the Directors and Executive  Officers of
Kent has been convicted in a criminal proceeding.



<PAGE>


<TABLE>

<CAPTION>
                            DIRECTORS AND EXECUTIVE OFFICERS
                            OF KENT FINANCIAL SERVICES, INC.

                                                                 Percent of Direct or
                                                                  Indirect Ownership
 Name and Address                 Position and Office          of Voting Securities of
of Beneficial Owner               Currently Held            Kent Financial Services, Inc.
- -------------------               -------------------       -----------------------------
<S>                               <C>                                <C>
Paul O. Koether                   Chairman, Director                 44.90%
 211 Pennbrook Road                and President
 Far Hills, NJ 07931

John W. Galuchie, Jr.             Vice President and
  376 Main Street                  Treasurer                          2.32%
 Bedminster, NJ 07921

Mark Koscinski                    Vice President                         *
  376 Main Street
  Bedminster, NJ 07921

M. Michael Witte                  Director                            1.15%
 1120 Granville Avenue
 Suite 102
 Los Angeles, CA 90049

Casey K. Tjang                    Director                               *
 56 Hall Drive
 Clark, NJ 07066

Mathew E. Hoffman                 Director                               *
 62 Rosehill Avenue
 New Rochelle, NY 10804
_________________________________________
*Less than 1 percent
 

</TABLE>

<PAGE>



                                                                      SCHEDULE 2

<TABLE>


                      PURCHASES AND SALES OF CORTECH SHARES

ASSET VALUE<F1>

Dates purchased       Number of shares purchased    Price per share<F2>    Total
- ---------------       --------------------------    ---------------      -------------
<S>                    <C>                            <C>                <C>   
07/25/97                  20,000                      $.61375            $   12,275.00
07/31/97                   6,700                       .625                   4,321.50
08/06/97                   9,100                       .6875                  6,256.25
08/07/97                   2,600                       .6875                  1,787.50
08/08/97                   3,100                       .6875                  2,131.25
08/12/97                 458,500                       .6875                315,218.75
08/15/97                   5,100                       .6875                  3,506.25
08/18/97                   5,200                       .6689                  3,478.28
08/19/97                   3,200                       .65625                 2,100.00
08/20/97                   9,000                       .65625                 5,906.25
08/21/97                   8,500                       .6875                  5,843.75
08/27/97                 146,800                       .6875                103,861.00
09/08/97                  22,000                       .6875                 15,125.00
09/11/97                  20,000                       .703125               14,062.50
09/15/97                  26,000                       .703125               18,281.25
09/16/97                   7,700                       .703125                5,414.06
09/17/97                   4,000                       .703125                2,812.50
09/24/97                  31,425                       .703125               22,095.70
09/30/97                  89,600                       .703125               63,000.00
10/01/97                  56,000                       .703125               39,375.00
10/02/97                   1,475                       .703125                1,037.11
10/06/97                  25,000                       .6875                 17,187.50
10/07/97                   2,000                       .6875                  1,375.00
10/07/97                   6,500                       .71875                 4,671.88
10/07/97                 336,000                       .703125              236,250.00
10/08/97               1,556,757                       .65                1,011,892.05
10/08/97                   5,000                       .75                    3,750.00
10/08/97                  20,000                       .71875                14,375.00
10/09/97                   2,000                       .71875                 1,437.50
10/09/97                   5,000                       .765625                3,828.13
10/09/97                  18,500                       .75                   13,875.00
10/10/97                   4,500                       .78125                 3,515.63
10/14/97                   1,000                       .78125                   781.25
10/14/97                   6,000                       .8125                  4,875.00
10/28/97                  15,000                       .6875                 10,312.50
10/30/97                  13,000                       .6875                  8,937.50
10/30/97                  12,000                       .65625                 7,875.00
11/03/97                   3,700                       .6875                  2,543.75
11/04/97                   4,900                       .65625                 3,215.63
11/05/97                  12,000                       .6875                  8,250.00
11/05/97                   2,500                       .65625                 1,640.63
11/07/97                  11,300                       .65625                 7,415.63
11/10/97                  58,343                       .65625                38,287.59
11/11/97                  10,500                       .65625                 6,890.63

                                                         (table continued on next page)

<PAGE>



(table continued from previous page)


Dates purchased       Number of shares purchased    Price per share<F2>    Total
- ---------------       --------------------------    ---------------      -------------
11/14/97                   4,000                       .65625                 2,625.00
11/14/97                   8,500                       .6875                  5,843.75
11/17/97                   9,700                       .65625                 6,365.63
11/18/97                  11,300                       .65625                 7,415.63
11/24/97                   5,000                       .640625                3,203.13
                       ---------                                         -------------
                       3,106,000                                         $2,086,524.84
                       ---------                                         -------------

Dates sold            Number of shares sold         Price per share<F2>    Total
- ----------            -------------------------     ---------------      -------------
08/13/97                   3,000                      $.6875             $    2,062.43
08/29/97                   3,000                       .71875                 2,156.17
09/17/97                   2,000                       .71875                 1,437.45
09/30/97                   3,000                       .71875                 2,156.17
10/07/97                 325,000                       .65                  211,242.95
02/10/98                 770,000                       .6705                516,285.00
                       ---------                                         -------------
                       1,106,000                                            735,340.17<F3>
                       ---------                                         -------------
                       2,000,000                                         $1,319,425.00
                       =========                                         =============


MARK W. JAINDL

Dates purchased       Number of shares purchased    Price per share<F2>    Total
- ---------------       --------------------------    ---------------      -------------
02/10/98                 250,000                       .6705             $  167,625.00
                      ==========                                         =============



FREDERICK J. JAINDL

Dates purchased       Number of shares purchased    Price per share<F2>    Total
- ---------------       --------------------------    ---------------      -------------
02/10/98                 520,000                       .6705             $  348,660.00
                      ==========                                         =============



<FN>
<F1>     Excludes the purchase for an aggregate  amount of $11,251.52 on October
         8, 1997 of warrants to purchase 562,576 shares of Cortech stock,  which
         were contributed back to the capital of Cortech on October 18, 1997.
         No shares were purchased with or are being held with borrowed funds.

<F2>     Price excludes brokerage commissions, if any.

<F3>     Reflects loss on sale of $31,759.67.
</FN>
</TABLE>
                                                            

<PAGE>

PRELIMINARY PROXY CARD

                                  Cortech, Inc.
                    Annual Meeting To Be Held On [date], 1998
      This Proxy Is Being Solicited On Behalf Of Asset Value Fund Limited
                          Partnership ("Asset Value")

     The undersigned hereby appoints Paul O. Koether, Mark W. Jaindl and John W.
Galuchie, Jr. or any of them, the undersigned's proxies, each with full power of
substitution,  to vote  all  Shares  of  Common  Stock  of  Cortech,  Inc.  (the
"Company") which the undersigned would be entitled to vote if personally present
at the Annual Meeting of Stockholders of the Company to be held on [date],  1998
at **A.M. at  **************************************  (the "Meeting") and at any
adjournments or  postponements  thereof and,  without limiting the generality of
the power hereby conferred,  the proxy nominees named above and each of them are
specifically directed to vote as indicated below.

     WHERE A CHOICE IS INDICATED,  THE SHARES  REPRESENTED BY THIS PROXY WILL BE
VOTED AS SPECIFIED.  IF NO CHOICE IS INDICATED,  THE SHARES  REPRESENTED BY THIS
PROXY WILL BE VOTED FOR THE  AMENDMENT  TO THE BYLAWS TO INCREASE  THE NUMBER OF
DIRECTORS TO SEVEN, FOR THE ELECTION OF ASSET VALUE'S NOMINEES AS DIRECTORS, and
FOR THE RATIFICATION OF ARTHUR ANDERSEN LLP.

         If there are  amendments or  variations to the matters  proposed at the
Meeting  or at any  adjournments  or  postponements  thereof,  or if  any  other
business  properly  comes before the Meeting,  this proxy confers  discretionary
authority  on the proxy  nominees  named herein and each of them to vote on such
amendments, variations or other business.

ASSET VALUE  RECOMMENDS A VOTE FOR  INCREASING THE NUMBER OF DIRECTORS FROM FIVE
TO SEVEN.

1. To amend Article 3 Section 3.1 of the  Company's  Bylaws to set the number of
directors to serve on the Board of Directors at seven.

FOR__________             AGAINST__________            ABSTAIN__________


ASSET VALUE RECOMMENDS A VOTE FOR THE ASSET VALUE NOMINEES.

2. To elect Asset Value's nominees as Directors:

Paul O. Koether          _____FOR             _____AGAINST          _____ABSTAIN

Mark W. Jaindl           _____FOR             _____AGAINST          _____ABSTAIN

John W. Galuchie, Jr.    _____FOR             _____AGAINST          _____ABSTAIN

James L. Bicksler        _____FOR             _____AGAINST          _____ABSTAIN


<PAGE>


ASSET VALUE RECOMMENDS A VOTE FOR THE RATIFICATION OF ARTHUR ANDERSEN
LLP.

3. To ratify the appointment of Arthur Andersen LLP as independent  auditors for
the year ended December 31, 1998.

FOR__________             AGAINST__________            ABSTAIN__________


4. In their  discretion,  on such other  matters as may properly come before the
annual meeting or any postponements or adjournments thereof, except that proxies
will not be voted on another matter which becomes known a reasonable time before
the meeting.

     The undersigned  acknowledges  receipt of the accompanying Notice of Annual
Meeting of  Stockholders  and Proxy  Statement for the  _________________,  1998
meeting.

                                      Dated:______________________________, 1998


                                      ------------------------------------------
                                      Signature of Stockholder


                                      ------------------------------------------
                                      Signature of Stockholder if Shares held in
                                      more than one name (Please sign exactly as
                                      name or names appear hereon. Full title of
                                      one  signing  in  representative  capacity
                                      should   be   clearly   designated   after
                                      signature.  If a corporation,  please sign
                                      in full corporate  name  by  President  or
                                      other   authorized   officer(s).     If  a
                                      partnership,  please  sign  in partnership
                                      name by authorized person.  If stock is in
                                      the name of  two  or  more  persons,  each
                                      should  sign.  Joint  owners  should  each
                                      sign.  Names of all joint holders should
                                      be written even if signed by only one.)


ASSET VALUE RECOMMENDS A VOTE FOR PROPOSALS  1, 2, AND 3.


PLEASE  PROMPTLY  COMPLETE,  DATE,  SIGN AND  MAIL  THIS  PROXY IN THE  ENCLOSED
POSTAGE-PAID ENVELOPE.




PRELIMINARY OPPOSITION PROXY MATERIAL

                      ASSET VALUE FUND LIMITED PARTNERSHIP
                          376 MAIN STREET, P.O. BOX 74
                              BEDMINSTER, NJ 07921
                                 (908) 234-1881

   
                                                                    June__, 1998
    

Dear Fellow Cortech Stockholder:

   
     We and two other  investors  ("Asset Value") own  approximately  15% of the
outstanding shares ("Cortech Shares") of Cortech, Inc. ("Cortech"),  which makes
us by far Cortech's  largest  stockholders.  We believe that the incumbent Board
has  exercised  poor judgment in governing  Cortech.  That is why we are seeking
your vote at the upcoming  Annual Meeting to elect all of our nominees who would
then constitute a majority of the Board.1

     At the end of fiscal  1997,  Cortech  had net assets of only $15.4  million
after  losing  over $70  million  since  1993 in a  failed  attempt  to  exploit
Cortech's  technology.  The Board then proceeded to expend $673,000 of Cortech's
limited  resources  promoting a merger with  BioStar,  Inc.  (the  "Merger"),  a
company  with a $5.6  million  negative net worth even though Asset Value warned
the  Board  from  the  start  that  the  Merger  was  not  in the  interests  of
stockholders2 who, Asset Value said, would never approve such a transaction. The
Merger was canceled on May 7,1998.  Within two weeks,  Kenneth Lynn,  the former
CEO, left Cortech,  taking with him, what we would call, a "departure  bonus" of
almost $500,000, another 3.5% of Cortech's remaining cash of $14.3 million.

                    We ask you. What will this Board do next?

Don't  take a chance.
Vote for a change.
Vote for Asset Value's nominees!

                                  MORE RED INK!

     After the  termination  of the  Merger,  Cortech's  Form 10-Q for the first
quarter of 1998 revealed that Cortech's  losses not only continued but increased
compared to last year. In a quarter with No research and development  activities
and No revenues, Cortech still had approximately 15
- --------
        1 Asset Value is also asking stockholders to approve an amendment to the
By-laws which would increase the number of directors from five to seven creating
a total of four vacancies. If these four vacancies are filled with Asset Value's
nominees control of Cortech would transfer to Asset Value.

        2 Asset Value has not retained an independent  financial adviser and its
conclusions  are  solely  based  on the  opinion  of its  manager,  Asset  Value
Management,  Inc. which was reached after reviewing  management's proxy material
for the Merger, including the opinion of management's financial adviser.


<PAGE>



full-time3 employees and general and administrative  expenses of $1,522,000,  of
which,  according to Cortech,  merger expense only  accounted for  approximately
$673,000

                         TIME AND MONEY ARE RUNNING OUT!

     On May 18,  1998,  CEO Kenneth  Lynn left Cortech . We believe that Mr Lynn
was made a scapegoat for what we think is Cortech's prior mismanagement.  But in
our  opinion,  Mr.  Lynn was a symptom  of what is wrong  with  Cortech  not the
source,  at least,  in our view,  not the only  source.  In the past five  years
(including the first quarter of 1998), Cortech has lost over $70 million, and as
of March 31, 1998 had cash of only  $14.3million.  We ask, does Lynn's departure
absolve the Board of their  responsibility for these losses? We think the answer
is a resounding No!

                   PICTURE OF HOUR GLASS WITH CONTENTS READING


                                                         CASH REMAINING AT
                                                          MARCH 31, 1998
                                                           $14.3 million





                                                          LOSSES INCEPTION 
                                                             TO DATE
                                                           $86 million!!!






- --------
        3 Cortech  does not  disclose  whether  there are  additional  part-time
employees and consultants still hanging on.


<PAGE>



               The question we believe you should ask yourself, is

                 ARE YOU BETTER OFF NOW THAN YOU WERE FIVE YEARS
                                      AGO?

     In what we think is the  biggest  bull  market in  history,  Cortech  Stock
prices  have  declined  from $18.25 per share in 1993 to $.50 per share in 1998,
making Cortech, by any comparison,  in our view, one of the poorest stock market
performers during this period. --AND THAT'S NO BULL!


                COMPARISON OF CORTECH'S STOCK PERFORMANCE (NASDAQ
           SYMBOL-CRTQ) TO THE DOW JONES INDUSTRIAL AVERAGE (DJII) AND
                THE STANDARD AND POOR'S 500 COMPOSITE INDEX (S&P)




 [GRAPH THE ABOVE]

<TABLE>
<CAPTION>

                                    
                    DJII               S&P            Cortech
                   ------             -----          ---------
<S>                <C>               <C>             <C>
1993               3820.77            469.90         $18.25

1994               3867.41            460.68          14.25

1995               5181.43            616.71           3.65625

1996               6544.09            748.03           3.8125

1997               7908.25            970.43           2.03125

1998               9037.71           1113.86            .50

</TABLE>

                              NOT A PRETTY PICTURE!


<PAGE>



                               STOP THE RED INK!

     Asset Value  considers a shutdown of Cortech an  alternative  which must be
considered,  particularly in view of the continued  losses reported in the first
quarter of 1998.  Such a course  however,  has  risks,  including  the  possible
further  diminishment  of Cortech's  technology  and the  possible  cessation of
Cortech as a going concern.  The matter would be further  evaluated with current
employees once Asset Value gained control,  therefore, no assurance can be given
that Cortech would be shut down.

     Asset Value can only give stockholders the assurance that its nominees will
try to further reduce Cortech's expenses and will move as quickly as possible to
secure a merger partner. Expenses that will be particularly scrutinized for cuts
are any part-time employees or consultants and employees engaged in any activity
other than  caretaking.  The new Board would seek to reduce,  if  possible,  any
professional  fees  unrelated  to seeking a  strategic  partner.  Asset  Value's
nominees have pledged to take no fees for serving as directors.

                          THE SHAPE OF THINGS TO COME 4

     So, what will Asset Value do if it obtains control of the Cortech Board? We
believe that once the Cortech Board determined to change control of Cortech,  it
should have sought competitive transactions more aggressively, by advertising in
the financial media, by engaging an investment banker from the outset to solicit
merger  partners and by publicly  stating that the Board was  conducting an open
bidding process for control of Cortech.  If elected Asset Value's  nominees will
take these  steps.  Asset Value has no specific  merger  partner in mind and has
considered possible alternatives for the future of Cortech only in a preliminary
way. In the course of its own business,  however, Asset Value constantly reviews
investment  opportunities and in connection with this process has seen companies
which might be attractive  strategic  partners for Cortech  although  additional
analysis would be required to determine whether any of these companies are a fit
with Cortech.

     The  principal  standards  for seeking a candidate  would be balance  sheet
quality and positive earnings.  Asset Value also believes that a private company
which seeks a public market or a public company which needs Cortech's  assets to
qualify  for  NASDAQ,  would  consider  these  attributes  as  well  as  cash in
calculating  Cortech's value. Asset Value is not sure,  however,  that there are
potential  acquisitions  or mergers that would be  attractive  for Cortech.  One
thing is certain  however,  Asset Value will not seek to merge  Cortech with any
affiliate or entity in which Asset Value is an investor.  Asset Value intends to
benefit from its Cortech  investment only to the same extent other  stockholders
benefit.
- --------
        4 H.G. Wells


<PAGE>



                 "WHO CARES WHAT OWNERS THINK? Who owns American
 companies? The management, of course. Shareholders are tolerated, but managers
                                    rule.5"

     Seven months after Asset Value first asked for representation on the Board;
long after the Board was sued for misfeasance;  after Cortech had spent $673,000
on the failed Merger; after Cortech had lost another  approximately $3.4 million
from operations (from September 30, 1997 through March 31, 1998), finally on May
11, 1998 the Cortech  Board  expressed an interest in meeting with Asset Value's
manager,  Paul Koether.  By this time, Asset Value had already spent significant
amounts of its own funds opposing the Merger and attempting to secure control of
the Board because it believed that a change in course for Cortech was absolutely
essential  and because it believed  that a Board  controlled  by the  incumbents
would not  embrace  the  necessary  changes.  Still  Asset  Value was willing to
present  the issues in  dispute to  stockholders  in one proxy  statement  filed
jointly by the Board and by Asset Value to avoid the cost of this proxy contest.
Asset  Value even  offered  to pay its share of the costs.  The Board has yet to
respond to this  proposal.  Asset  Value's  position  and Asset  Value's view of
management's  position is more fully set forth in the enclosed  Proxy  Statement
which we urge you to read carefully.

     Now it is time  for the  Annual  Meeting;  time  for  the  stockholders  to
re-evaluate  the past  leadership  of Cortech and time to consider a change.  We
believe that Asset Value has the same interests as all other  stockholders which
it believes will be a change from this management - a substantial change.

PLEASE  ASK  YOURSELF:

DO YOU WANT THE BOARD MEMBERS WHO APPROVED THE
BIOSTAR MERGER TO SELECT THE NEXT MERGER  CANDIDATE
FOR  CORTECH?

WE THINK YOUR ANSWER WILL BE : CERTAINLY NOT!

     PLEASE SEND THE WHITE  PROXY CARD TO ASSET  VALUE AND VOTE TO INCREASE  THE
BOARD AND TO ELECT ALL OF ASSET VALUE'S NOMINEES.


                                            Sincerely,



                                            Paul O. Koether
                                            Asset Value Fund Limited Partnership
- --------
        5 Market Watch, New York  Times,  3/8/98,  Floyd Norris.  This quote has
been made without the permission of the New York Times or Mr. Norris.


<PAGE>


IT'S TIME FOR A CHANGE; VOTE FOR CHANGE;
VOTE FOR ASSET VALUE.

SEND IN THE WHITE PROXY CARD
VOTE YES TO INCREASE THE BOARD
VOTE FOR ALL OF ASSET VALUE'S NOMINEES
    

                                    IMPORTANT

     If your shares are held in "Street  Name" only your bank or broker can vote
your shares, and only upon receipt of your specific instructions. Please contact
the person  responsible  for your account and  instruct  them to execute a white
proxy card as soon as possible.

     If you have any questions or need further assistance in voting, please call
John W. Galuchie,  Jr., of Asset Value Fund Limited Partnership collect at (908)
234-1881, or our proxy solicitor:

                           BEACON HILL PARTNERS, INC.
                                 90 BROAD STREET
                            NEW YORK, NEW YORK 10004
                                 (800) 253-3814



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