RF POWER PRODUCTS INC
SC 13D/A, 1996-06-07
MOTORS & GENERATORS
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<PAGE>

                               UNITED STATES
                    SECURITIES AND EXCHANGE COMMISSION
                          Washington, D.C. 20549


                              SCHEDULE 13D/A

                Under the Securities Exchange Act of 1934
                            (Amendment No.7 )*



                          RF POWER PRODUCTS, INC
        ---------------------------------------------------------
                             (Name of Issuer)

                       COMMON STOCK, $.01 PAR VALUE
              ------------------------------------------
                      (Title of Class of Securities)

                                749553 10 3  
                     -------------------------------
                              (CUSIP Number)

                           Ronald H. Deferrari 
                            Plasma-Therm, Inc.
                        9509 International Court 
                        St. Petersburg, FL  33716
                              (813) 577-4999      
           ----------------------------------------------------
               (Name, Address and Telephone Number of Person
             Authorized to Receive Notices and Communications)

                               May 31, 1996
                    -----------------------------------
                   (Date of Event which Requires Filing
                            of this Statement)

If the filing person has previously filed a statement on Schedule 13G to
report the acquisition which is the subject of this Schedule 13D, and is
filing this schedule because of Rule 13d-1(b)(3) or (4), check the
following box /  /.

<PAGE>
Check the following box if a fee is being paid with the statement /  /. 
(A fee is not required only if the reporting person :  (1) has a previous
statement on file reporting beneficial ownership of more than five percent
of the class of securities described in Item 1; and (2) has filed no
amendment subsequent thereto reporting beneficial ownership of five
percent or less of such class.) (See Rule 13d-7.)

Note:  Six copies of this Statement, including all exhibits, should be
filed with the Commission.  See Rule 13d-1(a) for other parties to whom
copies are to be sent.

*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 disclosures 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).

                              Page 1 of 5 Pages
<PAGE>
<PAGE>
                               SCHEDULE 13D
- --------------------------------------------------------------------------
CUSIP NO. 749553 10 3                                    Page 2 of 5 Pages
- --------------------------------------------------------------------------
1       NAME OF REPORTING PERSON
        S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

        RONALD H. DEFERRARI
- --------------------------------------------------------------------------
2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                           
                                                                  (a) / /
                                                                           
                                                                  (b) / /
- --------------------------------------------------------------------------
3       SEC USE ONLY

- --------------------------------------------------------------------------
4       SOURCE OF FUNDS*
        N/A - Shares of Common Stock were sold
- --------------------------------------------------------------------------
5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS 
        IS REQUIRED PURSUANT TO  ITEMS 2(d) or 2(e) 
        /  /
- --------------------------------------------------------------------------
6       CITIZENSHIP OR PLACE OF ORGANIZATION
        United States of America
- --------------------------------------------------------------------------
                        7   SOLE VOTING POWER
      NUMBER OF 
       SHARES               960,705 
     BENEFICIALLY---------------------------------------------------------
      OWNED BY          8   SHARED VOTING POWER
        EACH                0
     REPORTING -----------------------------------------------------------
       PERSON           9   SOLE DISPOSITIVE POWER
        WITH
                            960,705
               -----------------------------------------------------------
                        10  SHARED DISPOSITIVE POWER
                            0
- --------------------------------------------------------------------------
11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
        960,705
- --------------------------------------------------------------------------
<PAGE>
12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN     
        SHARES*                    / /
- --------------------------------------------------------------------------
13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
        7.94% 
- --------------------------------------------------------------------------
14      TYPE OF REPORTING PERSON*
        IN
- --------------------------------------------------------------------------
<PAGE>
<PAGE>
                                SCHEDULE 13D

- --------------------------------------------------------------------------
CUSIP No. 749553 10 3                                    Page 3 of 5 Pages
- --------------------------------------------------------------------------


   The undersigned, Ronald H. Deferrari ("Mr. Deferrari"), hereby amends
and restates his Schedule 13D filing dated July 24, 1992 and Amendment No.
1 dated November 14, 1994, Amendment No. 2 dated July 13, 1995, Amendment
No. 3 dated August 31, 1995, Amendment No. 4 dated September 30, 1995,
Amendment No. 5 dated February 29, 1996 and Amendment No. 6 dated April 30
thereto.  

ITEM 1. SECURITY AND ISSUER.

        The title of the class of equity securities to which this
statement relates is the common stock, $.01 par value (the "RFPP Common
Stock"), of RF Power Products, Inc., a New Jersey corporation ("RFPP"). 
The principal executive offices of RFPP are located at 136 Route 73,
Voorhees, New Jersey, 08043.

ITEM 2. IDENTITY AND BACKGROUND.

        This statement is being filed by Ronald H. Deferrari, a United
States citizen.

        The present principal occupation of Mr. Deferrari is Chairman of
the Board, Chief Executive Officer and Treasurer of Plasma-Therm, Inc.
("Plasma-Therm") and his principal business office is 9509 International
Court, St. Petersburg, Florida, 33716. 

        During the last five years, Mr. Deferrari has not been convicted
in a criminal proceeding (excluding traffic violations or similar
misdemeanors).

        During the last five years, Mr. Deferrari has not been a party to
a civil proceeding of a judicial or administrative body of competent
jurisdiction and as a result of such proceeding was or is subject to a
judgment, decree or final order enjoining future violations of, or
prohibiting or mandating activities subject to federal or state securities
laws or finding any violation with respect to such laws.

ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.  

        On July 24, 1992, Plasma-Therm spun-off its subsidiary, RFPP, by
distributing pro rata all of the RFPP Common Stock to the holders of
record of Plasma-Therm common stock on the record date set for the
distribution (the "spin-off").  Mr. Deferrari acquired the RFPP Common
Stock pursuant to the spin-off as a result of his status as a Plasma-Therm
shareholder on the record date.<PAGE>
<PAGE>
                                SCHEDULE 13D

- --------------------------------------------------------------------------
CUSIP No. 749553 10 3                                    Page 4 of 5 Pages
- --------------------------------------------------------------------------


ITEM 4. PURPOSE OF TRANSACTION.

        As set forth in Item 3, Mr. Deferrari acquired the RFPP Common
Stock pursuant to the spin-off.  In order to effectuate the spin-off, RFPP
and Plasma-Therm entered into an Agreement and Plan of Reorganization
which provided, inter alia, for the distribution of one share of RFPP
Common Stock for each share of Plasma-Therm common stock held on the
record date.  Mr. Deferrari is Chairman of the Board, Chief Executive
Officer and Treasurer of Plasma-Therm.

        At the present time, Mr. Deferrari has no specific plans or
proposals that relate to or would result in any of the actions specified
in clauses (b) through (j) of Item 4 of Schedule 13D.  At present time,
Mr. Deferrari is not a controlling person or affiliate of RFPP.  Mr.
Deferrari currently plans to dispose of additional shares of RFPP Common
Stock in routine open market sales.

ITEM 5. INTEREST IN SECURITIES OF THE ISSUER.

        (a)   Mr. Deferrari currently owns beneficially 960,705 shares of
RFPP Common Stock, which constitutes 7.94% of the RFPP Common Stock
outstanding, calculated in accordance with Rule 13d-3(d)(1).  The
undersigned has been advised that at May 31, 1996, RFPP had 12,104,909
shares of Common Stock outstanding.

        (b)   Mr. Deferrari has sole power to vote and dispose of all of
such shares.

        (c)   From May 1, 1996 through May 31, 1996, Mr. Deferrari sold an
aggregate of 189,000 shares of RFPP Common Stock in routine open market
transactions.  There were numerous separate transactions, at prices
between $5.375 and $8.125 per share.

        (d)   Not applicable.

        (e)   Not applicable.

ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH      
        RESPECT TO SECURITIES OF THE ISSUER.

        None.

ITEM 7. MATERIAL TO BE FILED AS EXHIBITS.

        None.


<PAGE>
<PAGE>
                                SCHEDULE 13D

- --------------------------------------------------------------------------
CUSIP No. 749553 10 3                                    Page 5 of 5 Pages
- --------------------------------------------------------------------------



                                 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.


                                         June 7, 1996                      
                                         ----------------------------   
                                         Date


                                         /s/ Ronald H. Deferrari        
                                         ----------------------------
                                         RONALD H. DEFERRARI   



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