STERIGENICS INTERNATIONAL INC
SC 13G, 1998-02-13
MISC HEALTH & ALLIED SERVICES, NEC
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13G


                    Under the Securities Exchange Act of 1934
                                (Amendment No. )


                         SteriGenics International, Inc.
- --------------------------------------------------------------------------------
                                (Name of Issuer)


                                  Common Stock
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                  85915R 10 5
- --------------------------------------------------------------------------------
                                 (CUSIP Number)


*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter disclosure
provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).





SEC 1745 (2/92)

                               Page 1 of 8 pages

<PAGE>

<TABLE>
<CAPTION>
<S>                                                      <C>                   <C>
- ---------------------------------------                                        --------------------------------------
CUSIP NO.    85915R 10 5                                 13G                             Page 2 of 8 Pages
           ---------------                                                                                
- ---------------------------------------                                        --------------------------------------

- ----------- ---------------------------------------------------------------------------------------------------------
    1       NAME OF REPORTING PERSON
            S. S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                     Arthur C. Rinsky, as Trustee of the Patricia Morley King Trust
- ----------- ---------------------------------------------------------------------------------------------------------
    2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                                        (a)  [ ]
                                                                                                        (b)  [X]
- ----------- ---------------------------------------------------------------------------------------------------------
    3       SEC USE ONLY

- ----------- ---------------------------------------------------------------------------------------------------------
    4       CITIZENSHIP OR PLACE OF ORGANIZATION

                     United States of America
- ----------- ---------------------------------------------------------------------------------------------------------
    NUMBER OF SHARES   5          SOLE VOTING POWER
   BENEFICIALLY OWNED   
   BY EACH REPORTING              0
     PERSON WITH       ---------- -----------------------------------------------------------------------------------
                       6          SHARED VOTING POWER
    
                                  907,054
                       ---------- -----------------------------------------------------------------------------------
                       7          SOLE DISPOSITIVE POWER
    
                                  0
                       ---------- -----------------------------------------------------------------------------------
                       8          SHARED DISPOSITIVE POWER

                                  907,054
- -------------------------- ---------- -------------------------------------------------------------------------------
    9       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                              907,054

- ----------- ---------------------------------------------------------------------------------------------------------
    10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
             [ ]
- ----------- ---------------------------------------------------------------------------------------------------------
    11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                              13.1%
- ----------- ---------------------------------------------------------------------------------------------------------
    12      TYPE OF REPORTING PERSON *

                              IN
- ----------- ---------------------------------------------------------------------------------------------------------
<FN>
                                         *SEE INSTRUCTION BEFORE FILLING OUT!
</FN>
</TABLE>

                                                  Page 2 of 8 pages

<PAGE>

<TABLE>
<CAPTION>
<S>                                                      <C>                   <C>
- ---------------------------------------                                        --------------------------------------
CUSIP NO.    85915R 10 5                                 13G                             Page 3 of 8 Pages
           ---------------                                                                                
- ---------------------------------------                                        --------------------------------------

- ----------- ---------------------------------------------------------------------------------------------------------
    1       NAME OF REPORTING PERSON
            S. S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                     Thomas C. Sorensen, as Trustee of the Patricia Morley King Trust
- ----------- ---------------------------------------------------------------------------------------------------------
    2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                                        (a)  [ ]
                                                                                                        (b)  [X]
- ----------- ---------------------------------------------------------------------------------------------------------
    3       SEC USE ONLY

- ----------- ---------------------------------------------------------------------------------------------------------
    4       CITIZENSHIP OR PLACE OF ORGANIZATION

                     United States of America
- ----------- ---------------------------------------------------------------------------------------------------------
    NUMBER OF SHARES   5          SOLE VOTING POWER
   BENEFICIALLY OWNED   
   BY EACH REPORTING              0
     PERSON WITH       ---------- -----------------------------------------------------------------------------------
                       6          SHARED VOTING POWER
    
                                  907,054
                       ---------- -----------------------------------------------------------------------------------
                        7          SOLE DISPOSITIVE POWER
    
                                  0
                       ---------- -----------------------------------------------------------------------------------
                       8          SHARED DISPOSITIVE POWER

                                  907,054
- -------------------------- ---------- -------------------------------------------------------------------------------
    9       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                              907,054
- ----------- ---------------------------------------------------------------------------------------------------------
    10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
             [ ]
- ----------- ---------------------------------------------------------------------------------------------------------
    11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                              13.1%
- ----------- ---------------------------------------------------------------------------------------------------------
    12      TYPE OF REPORTING PERSON *

                              IN
- ----------- ---------------------------------------------------------------------------------------------------------
</TABLE>

                                                   Page 3 of 8 pages

<PAGE>

<TABLE>
<CAPTION>
<S>                                                      <C>                   <C>
- ---------------------------------------                                        --------------------------------------
CUSIP NO.    85915R 10 5                                 13G                             Page 4 of 8 Pages
           ---------------                                                                                
- ---------------------------------------                                        --------------------------------------

- ----------- ---------------------------------------------------------------------------------------------------------
    1       NAME OF REPORTING PERSON
            S. S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                     Charles W. King, III, as Trustee of the Patricia Morley King Trust
- ----------- ---------------------------------------------------------------------------------------------------------
    2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                                        (a)  [ ]
                                                                                                        (b)  [X]
- ----------- ---------------------------------------------------------------------------------------------------------
    3       SEC USE ONLY

- ----------- ---------------------------------------------------------------------------------------------------------
    4       CITIZENSHIP OR PLACE OF ORGANIZATION

                     United States of America
- ----------- ---------------------------------------------------------------------------------------------------------
    NUMBER OF SHARES   5          SOLE VOTING POWER
   BENEFICIALLY OWNED   
   BY EACH REPORTING              0
     PERSON WITH       ---------- -----------------------------------------------------------------------------------
                       6          SHARED VOTING POWER
    
                                  907,054
                       ---------- -----------------------------------------------------------------------------------
                        7          SOLE DISPOSITIVE POWER
    
                                  0
                       ---------- -----------------------------------------------------------------------------------
                       8          SHARED DISPOSITIVE POWER

                                  907,054
- -------------------------- ---------- -------------------------------------------------------------------------------
    9       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                              907,054
- ----------- ---------------------------------------------------------------------------------------------------------
    10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
             [ ]
- ----------- ---------------------------------------------------------------------------------------------------------
    11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                              13.1%
- ----------- ---------------------------------------------------------------------------------------------------------
    12      TYPE OF REPORTING PERSON *

                              IN
- ----------- ---------------------------------------------------------------------------------------------------------
</TABLE>
                                                   Page 4 of 8 pages

<PAGE>

- ---------------------------------------      -----------------------------------
CUSIP NO.    85915R 10 5                 13G          Page 5 of 8 Pages
- ---------------------------------------      -----------------------------------

Item 1.

         (a)      Name of Issuer:   SteriGenics International, Inc.

         (b)      Address of Issuer's Principal Executive Offices:

                                            4020 Clipper Court
                                            Fremont, CA  94538
Item 2.

         (a)      Name of Person Filing:    Arthur C. Rinsky, Thomas C. Sorensen
                                            and Charles W. King, III, each in 
                                            his capacity as Trustee of the
                                            Patricia Morley King Trust

         (b) Address of Principal Business Office or, if none, Residence:

             Arthur C. Rinsky                      
             Gray Cary Ware & Freidenrich LLP      
             400 Hamilton Avenue                   
             Palo Alto, CA  94301-1825             
                                                   
             Thomas C. Sorensen               
             King Asset Management Corporation
             1999 South Bascom Avenue                
             Suite 925                               
             Campbell, CA  95008                     
                                                     
             Charles W. King, III   
             900 Hansen Way         
             Suite 250             
             Palo Alto, CA  94304  
                                   
         (c)    Citizenship:   Arthur C. Rinsky:        United States of America
                               Thomas C. Sorensen:      United States of America
                               Charles W. King, III     United States of America

         (d)    Title of Class of Securities:  Common Stock
                              
         (e)   CUSIP Number:     85915R   10   5

Item 3. If this statement is filed pursuant to Rule 13d-1(b), or 13d-2(b), check
whether the person filing is a:

         (a)  [ ]   Broker or Dealer registered under section 15 of the Act

         (b)  [ ]   Bank as defined in section 3(a)(6) of the Act

         (c)  [ ]  Insurance Company as defined in section 3(a)(19) of the Act

         (d)  [ ]  Investment  Company  registered  under  section  8 of  the
                   Investment Company Act

                               Page 5 of 8 pages
<PAGE>

- ---------------------------------------      -----------------------------------
CUSIP NO.    85915R 10 5                 13G          Page 6 of 8 Pages
- ---------------------------------------      -----------------------------------

         (e)  [ ]  Investment  Adviser  registered  under  section  203 of the
                   Investment Advisers Act of 1940

         (f)  [ ]  Employee  Benefit Plan,  Pension Fund which is subject to the
                   provisions of the Employee  Retirement Income Security Act of
                   1974 or Endowment Fund: see ss. 240.13d-1(b)(1)(ii)(F)

         (g)  [ ]  Parent   Holding    Company,    in   accordance    with   ss.
                   240.13d-1(b)(ii)(G) (Note: See Item 7)

         (h)  [ ]  Group, in accordance with ss. 240.13d-1(b)(1)(ii)(H)


Item 4.  Ownership

         (a)       Amount  Beneficially  Owned:907,054.  These  shares  are held
                   jointly by Mr.  Rinsky,  Mr.  Sorensen and Mr. King, in their
                   capacities as Trustees of the Patricia Morley King Trust.

         (b)       Percent  of  Class:   13.1%,   based  on   6,939,846   shares
                   outstanding on December 31, 1997.

         (c)       Number of shares as to which such person has:

                  (i)      sole power to vote or to direct the vote:  0

                  (ii)     shared power to vote or to direct the vote:  907,054.
                           Any two (2)  Trustees  of the  Patricia  Morley  King
                           Trust, acting together, have the shared power to vote
                           or direct the vote of the 907,054 shares.

                  (iii)    sole power to dispose or to direct the disposition
                           of:  0

                  (iv)     shared power to dispose or to direct the  disposition
                           of:  907,054.  Any two (2)  Trustees of the  Patricia
                           Morley  King Trust  acting  together  have the shared
                           power to  dispose or direct  the  disposition  of the
                           907,054 shares.

Item 5.  Ownership of Five Percent or Less of a Class

                  Not applicable

Item 6.  Ownership of More than Five Percent on Behalf of Another Person

                  Not applicable

                               Page 6 of 8 pages

<PAGE>

- ---------------------------------------      -----------------------------------
CUSIP NO.    85915R 10 5                 13G          Page 7 of 8 Pages
- ---------------------------------------      -----------------------------------

Item 7.  Identification  and Classification of the Subsidiary Which Acquired the
         Security Being Reported on by the Parent Holding Company

                  Not applicable

Item 8.  Identification and Classification of Members of the Group

                  Not applicable

Item 9.  Notice of Dissolution of the Group

                  Not applicable

Item 10. Certification

                  Not applicable






                               Page 7 of 8 pages

<PAGE>


                                    SIGNATURE

         After reasonable  inquiry and to the best of my knowledge and belief, I
certify that the information  set forth in this statement is true,  complete and
correct.

Date:    February 9, 1998

                                              /s/ Arthur C. Rinsky
                                          --------------------------------------
                                          Arthur C. Rinsky, Trustee

         After reasonable  inquiry and to the best of my knowledge and belief, I
certify that the information  set forth in this statement is true,  complete and
correct.

Date:    February 10, 1998

                                              /s/ Thomas C. Sorensen
                                          --------------------------------------
                                          Thomas C. Sorensen, Trustee

         After reasonable  inquiry and to the best of my knowledge and belief, I
certify that the information  set forth in this statement is true,  complete and
correct.

Date:    February 5, 1998

                                             /s/ Charles W. King, III
                                          --------------------------------------
                                          Charles W. King, III, Trustee


                                    EXHIBIT A

         Agreement  Between Arthur C. Rinsky,  Thomas C. Sorensen and Charles W.
King, III

         The  undersigned  declare and agree as of 10 February,  1998,  that the
Schedule  13G to which this  Exhibit is  attached  is filed on behalf of each of
them.


                                              /s/ Arthur C. Rinsky
                                          --------------------------------------
                                          Arthur C. Rinsky, Trustee

                                              /s/ Thomas C. Sorensen
                                          --------------------------------------
                                          Thomas C. Sorensen, Trustee

                                              /s/ Charles W. King, III
                                          --------------------------------------
                                          Charles W. King, III, Trustee


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