Document:

EXHIBIT 10.30

THIS EXHIBIT HAS BEEN REDACTED AND IS THE SUBJECT OF A CONFIDENTIAL
TREATMENT REQUEST. THE REDACTED MATERIAL IS MARKED "[***]" AND HAS BEEN
FILED WITH THE SECURITIES AND EXCHANGE COMMISSION.

                        INTERIM PATENT LICENSE AGREEMENT

        THIS AGREEMENT is entered into this 28th day of June, 2000 (the
"Effective Date") by and between CFM Technologies Inc., having a place of
business at 150 Oaklands Blvd., Exton, PA 19341 ("CFM"), CFMT Inc., having a
place of business at 1403 Foulk Road, Suite 106F, Wilmington, DE 19803,
hereinafter collectively referred to as "Licensor," and STEAG Electronic Systems
AG, a German company having a place of business at Ruettenscheider Strasse 1-3,
45128 Essen, Germany, hereinafter referred to as "Licensee" or "STEAG."

                                   WITNESSETH

     WHEREAS, STEAG and Mattson Technology Inc., having a place of business at
3550 West Warren Avenue, Fremont, CA 94538, hereinafter referred to as
"Mattson", are entering into a Strategic Business Combination Agreement,
pursuant to which, among other things, Mattson will acquire certain subsidiaries
of STEAG, including subsidiaries engaged in the semiconductor wet processing
business (the "Combination Agreement");

     WHEREAS, CFM, M2C Acquisition Corporation ("M2C") and Mattson are entering
into an Agreement and Plan of Merger, pursuant to which, among other things, M2C
will merge with and into CFM, resulting in CFM becoming a wholly-owned
subsidiary of Mattson (the "Merger Agreement" and, together with the Combination
Agreement, the "Transaction Agreements");

     WHEREAS, Mattson, STEAG and CFM have agreed that the transactions
contemplated by the Combination Agreement and the Merger Agreement will be
conditioned on each other and will close concurrently with each other, and that
each of such agreements will terminate automatically upon termination of the
other;

     WHEREAS, Licensor is the owner of U.S. Patent No. 4,911,761 (the "'761
patent") and of other U.S. and foreign patents relating to wet processing of
semiconductors;

     WHEREAS, Licensor and STEAG Electronic Systems, Inc. (f/k/a STEAG
MicroTech, Inc.) are parties to certain litigation involving the `761 patent,
including Civil Action No. 95-442 (RRM) in the U.S. District Court for the
District of Delaware and the pending second appeal in the U.S. Court of Appeals
for the Federal Circuit (No. 00-1086) of a finding of infringement and an
injunction issued by the district court (the "Injunction"); and

     WHEREAS, beginning on the Effective Date, and terminating as set forth
hereinafter, Licensor is willing to grant to Licensee and Licensee is willing to
accept a license to the `761 patent and other Licensor patent rights, under the
terms and conditions set forth herein, which license will permit Licensee to
make, have made, use, import, sell and offer to sell equipment that otherwise
may or would constitute infringement of Licensor's patent rights, or be in
violation of the Injunction in the United States;

     NOW, THEREFORE, in consideration of the premises and the mutual agreements
herein contained, the parties agree as follows:

<PAGE>

                             ARTICLE 1 - DEFINITIONS

     As used in this Agreement, the following terms shall have the following
meanings:

    1.01  The term "Patent Rights" shall mean rights under

          (a)  U.S. Patent Nos. 4,911,761, 4,778,532, and 4,917,123,

          (b)  reexamination certificate No. B1 4,984,597,

          (c)  all issued patents, published applications, reissues and
               reexamination certificates owned by Licensor reasonably necessary
               to practice the subject matter of the patents listed immediately
               above, and

          (d)  all foreign counterparts to any of said patents, published
               applications, reissues and reexamination certificates.

     1.02 "Licensed Product(s)" shall mean [***], wet bench products, and
          replacement parts therefor, the manufacture, use, sale, offer for sale
          or importation of which, but for the grant of the license herein,
          would constitute infringement of Patent Rights. The [***], as
          configured on or before the Effective Date, shall be deemed to be
          Licensed Products.

    1.03  "Net Sales Value" of Licensed Products sold by Licensee shall mean the
          gross invoice price received therefor, less allowance for returns and
          less (to the extent separately stated on such invoice) any normal
          discounts and allowances actually granted and less any sales, use or
          other excise taxes and shipping and packaging charges included in such
          gross invoice price.

    1.04  "Term" of this Agreement shall mean the period described in Section
          6.01.

          [***]

                            ARTICLE 2 - LICENSE GRANT

    2.01  Subject to the terms and conditions of this Agreement, Licensor hereby
          grants to Licensee, and Licensee hereby accepts, a non-exclusive,
          non-transferable worldwide license under the Patent Rights, without
          the right to grant sublicenses (except as provided in Section 2.02),
          to make, have made, use, sell, offer for sale, and import Licensed
          Products during the Term of this Agreement.

    2.02  Licensee shall have the right to grant sublicenses of the rights
          granted pursuant to Section 2.01 to companies affiliated with Licensee
          and engaged in the manufacture, sale, offering for sale and servicing
          of Licensed Products. For purposes of the preceding sentence, a
          company that is "affiliated" with Licensee is one that controls, is
          controlled by or is under common control with Licensee, where
          "control" refers to ownership of more than 50% of the capital stock or
          other equity interests of a company.

    2.03  Licensor shall have no right to assert against any customer of
          Licensee or any of Licensee's affiliates or any of such customer's
          successors and affiliates a claim for infringement of the Patent
          Rights based on such person's or entity's use of the Licensed
          Products.

                                       2

<PAGE>

                     ARTICLE 3 - ROYALTIES AND CONSIDERATION

    3.01  Licensee shall pay to Licensor a royalty of [***], with respect to
          sales of Licensed Products within the United States after the
          Effective Date and during the Term of this Agreement, as such amounts
          may be adjusted pursuant to Sections 3.02 through 3.04, below. [***]

    3.02  The royalty percentages set forth in clauses (i) and (ii) of Section
          3.01 shall each be permanently reduced by Fifty Percent (50%) [***]
          from and after the date that the Transaction Agreements are terminated
          if such terminations result from any of the following events:

               (i)  The Merger Agreement is terminated pursuant to Section
                    8.1(d) thereof as a result of a failure to obtain the
                    required approvals of the shareholders of CFM; or

               (ii) The Merger Agreement is terminated by CFM pursuant to
                    Section 8.1(j) thereof as a result of a "Parent Corporation
                    Material Adverse Effect" (as defined in the Merger
                    Agreement).

    3.03  The royalty payments set forth in clauses (i) and (ii) of Section 3.01
          [***] from and after, the date that the Transaction Agreements are
          terminated if such terminations result from any of the following
          events:

               (i)  The Merger Agreement is terminated by CFM pursuant to
                    Section 8.1(b) thereof within, but not after, the 90-day
                    period following the "Termination Date" (as defined in the
                    Merger Agreement");

               (ii) The Merger Agreement is terminated by Mattson pursuant to
                    Section 8.1(f) thereof due to a "Company Triggering Event"
                    (as defined in the merger Agreement) or a material breach by
                    CFM of its obligations to call a shareholders meeting or
                    prepare and mail a joint proxy statement; or

              (iii) The Merger Agreement is terminated by Mattson pursuant to
                    Section 8.1(g) thereof if CFM shall have willfully and
                    deliberately refused, prior to the Termination Date" (as
                    defined in the Merger Agreement), to consummate the
                    transactions contemplated by the Merger Agreement
                    notwithstanding the satisfaction or waiver of all conditions
                    precedent set forth in the Merger Agreement (other than
                    conditions the satisfaction of which is entirely within the
                    control of CFM).

    3.04  Licensee shall pay to Licensor a one-time, fully-paid up royalty of
          [***], payable within ten (10) business days after termination of the
          Transaction Agreements, and the royalty payments set forth in clauses
          (i) and (ii) of Section 3.01 shall not apply to sales of Licensed
          Products after the date of termination, if the Transaction Agreements
          are terminated as a result of any of the following events.

                                       3
<PAGE>

               (i)  The Combination Agreement is terminated by STEAG pursuant to
                    Section 8.1(b) thereof within, but not after, the 90-day
                    period following the "Termination Date" (as defined in the
                    Combination Agreement);

               (ii) The Combination Agreement is terminated by Mattson pursuant
                    to Section 8.1(h) thereof due to a breach by STEAG other
                    than breaches described in Section 6.02 (i) or (ii) of this
                    Agreement; or

              (iii) The Combination Agreement is terminated by STEAG pursuant
                    to Section 8.1(j) thereof due to the "Closing Stock Price"
                    (as defined in the Combination Agreement) falling below the
                    level specified in such provision.

    3.05  Except as provided in Section 3.02, 3.03 and 3.04, the royalty
          payments set forth in clauses (i) and (ii) of Section 3.01 shall
          remain in effect following termination of the Transaction Agreements
          and for the remaining Term of this Agreement.

    3.06  In the event that a dispute between the parties to either of the
          Transaction Agreements arises with regard to the cause of termination
          of the Transaction Agreements where the outcome of such dispute would
          be determinative of whether a change in the royalty structure pursuant
          to Section 3.02, 3.03 or 3.04 would apply, no such change in the
          royalty structure shall become effective until the dispute (or the
          portion of the dispute which affects the royalty structure) is settled
          by the parties or determined by a final, non-appealable judgment by a
          court of competent jurisdiction.

    3.07  The royalty payments set forth in clauses (i) and (ii) of Section 3.01
          shall not apply to sales of Licensed Products after, and the license
          granted in this Agreement shall be royalty-free from and after,
          expiration or a final, non-appealable determination by a court of
          competent jurisdiction of unenforceability or invalidity of the `761
          patent.

                            ARTICLE 4 - PAYMENT TERMS

    4.01  All royalties payable pursuant to Article 3 hereof shall be paid in
          United States Dollars by wire transfer on a quarterly basis together
          with an identification of the Licensed Products sold during that
          quarter sufficient to permit Licensor to verify preliminarily the
          correctness of the royalty payment.

    4.02  Payments provided for in this Agreement shall, when overdue, bear
          interest at a rate per annum equal to one and one-half percent
          (1 1/2%) per month from the date such payment shall be due until
          payment shall be received by Licensor.

                            ARTICLE 5 - AUDIT RIGHTS

          Licensee shall keep accurate and complete books of account containing
          record of all data necessary for the determination of the amount of
          the royalty payments that shall become due under Article 3 hereof, and
          shall permit Licensor or its agent to examine such books of account at
          all reasonable times during normal business hours to such extent as
          may be necessary to determine the accuracy or inaccuracy of any of the
          statements to be rendered by Licensee pursuant to Article 4 hereof.
          Such inspection shall be completed at the expense of Licensor,
          provided that if any deficiency exceeding three percent (3%) of the
          money actually due shall be found in connection with the computation,
          the cost of such inspection shall be borne by Licensee.

                                       4
<PAGE>

                        ARTICLE 6 - TERM AND TERMINATION

    6.01  Except as set forth below in this Article 6, the Term of this
          Agreement shall commence on the Effective Date and end on the date
          when the last of the patents included in the Patent Rights shall have
          (i) expired or (ii) been determined to be invalid or unenforceable by
          a final, non-appealable judgment by a court of competent jurisdiction.

    6.02  Notwithstanding the provisions of Section 6.01, the Term shall end
          upon termination of the Transaction Agreements if such terminations
          result from any of the following events:

               (i)  The Combination Agreement is terminated by Mattson pursuant
                    to Section 8.1(g) thereof due to a breach by STEAG of
                    certain obligations under Section 5.3(a) of the Combination
                    Agreement;

               (ii) The Combination Agreement is terminated by Mattson pursuant
                    to Section 8.1(h) thereof if STEAG shall have willfully and
                    deliberately refused, prior to the "Termination Date" (as
                    defined in the Combination Agreement), to consummate the
                    transactions contemplated by the Combination Agreement
                    notwithstanding the satisfaction or waiver of all conditions
                    precedent set forth in the Combination Agreement (other than
                    conditions the satisfaction of which is entirely within the
                    control of STEAG); or

              (iii) The Transaction Agreements shall have previously been
                    terminated other than for any of the reasons described in
                    Section 3.02(i) or 3.03(ii) or (iii) and, within twenty-four
                    (24) months after the date of termination Mattson and STEAG
                    enter into a definitive agreement for a transaction
                    substantially similar to the transactions contemplated by
                    the Combination Agreement which includes STEAG's wet
                    processing business but does not involve CFM; PROVIDED, that
                    this Section 6.02(iii) shall not apply if, prior to
                    consummation of such new transaction between Mattson and
                    STEAG, CFM shall have entered into a definitive agreement
                    with respect to a transaction which would constitute an
                    "Acquisition Transaction" (as defined in the Merger
                    Agreement); PROVIDED, FURTHER, that the Term shall not be
                    affected if STEAG and Mattson enter into a transaction that
                    does not include STEAG's wet processing business .

    6.03  In the event that a dispute between the parties to either of the
          Transaction Agreements arises with regard to the cause of termination
          of the Transaction Agreements where the outcome of such dispute would
          be determinative of whether the Term would end pursuant to Section
          6.02, the Term shall not end and this Agreement shall continue in full
          force and effect until the dispute (or the portion of the dispute
          which affects the Term) is settled by the parties or determined by a
          final, non-appealable judgment by a court of competent jurisdiction.

    6.04  Upon consummation of the transactions contemplated by the Transaction
          Agreements, the license granted in this Agreement shall terminate with
          respect to any affiliate of STEAG not acquired, directly or
          indirectly, by Mattson. Notwithstanding the preceding sentence and the
          provisions of Article 3, if any affiliate of STEAG currently provides
          goods or services to STEAG's wet processing business and continues to
          provide substantially similar goods or services to Mattson or any of
          its subsidiaries following the closing under the Transaction
          Agreements, the license granted hereby shall continue with respect to
          such affiliate as and to the extent necessary to enable such affiliate
          to provide such goods and services to Mattson and its subsidiaries,
          except that such license shall be on a royalty-free basis.

                                       5
<PAGE>

    6.05  In the event that Licensee shall fail to comply with any material term
          of this Agreement, Licensor shall have the option to give Licensee a
          written notice of default. If Licensee shall not have cured such
          default within thirty (30) days of such notice, Licensor shall have
          the right to terminate this Agreement effective immediately upon
          written notice. Notwithstanding the foregoing, Licensor shall have the
          right to terminate this Agreement immediately upon written notice if
          Licensee is required to pay the amount described in Section 3.04 of
          this Agreement and fails to do so within the time period specified in
          such Section 3.04.

    6.06  The provisions of Articles 1, 5, 6, 7, 9, 10, 11, 13, and 14 shall
          survive expiration or termination of this Agreement. In addition,
          expiration or termination of this Agreement shall not relieve the
          parties of any obligations accruing prior to such expiration or
          termination, including the obligations set forth in Article 3 and 4.
          The remainder of the earned royalties due to Licensor pursuant to
          Article 3, if any, shall be paid by Licensee within twenty (20) days
          from the effective date of termination of this Agreement.

                               ARTICLE 7 - NOTICE

          All notices, requests or communications hereunder shall be in writing
          and shall be deemed to have been fully given (i) upon delivery, if
          delivered personally against written receipt; (ii) three (3) days
          after posting by certified mail, postage prepaid, return receipt
          requested; (iii) upon confirmed receipt, if delivered by telecopier;
          or (iv) the next day if delivered by a recognized overnight commercial
          courier, addressed in each instance to the parties at the following
          address:

          CFM Technologies Inc.                STEAG Electronic Systems AG
          150 Oaklands Blvd.,                  Ruettenscheider Strasse 1-3
          Exton, PA, 19341                     45128 Essen, Germany
          Attn.: Lorin J. Randall, Secretary   Attn.: General Counsel
          Facsimile No: 610-280-8309           Facsimile No: 011-49-201-801-6684

                             ARTICLE 8 - WARRANTIES

    8.01  Licensor warrants and represents to Licensee that Licensor has the
          right, title and interest to the Patent Rights sufficient to grant the
          licenses and rights granted herein.

    8.02  EXCEPT AS OTHERWISE EXPRESSLY SET FORTH IN THIS AGREEMENT, AND TO THE
          MAXIMUM EXTENT PERMITTED BY LAW, LICENSOR MAKES NO REPRESENTATIONS AND
          EXTENDS NO WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
          INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS
          FOR A PARTICULAR PURPOSE, VALIDITY OF PATENT RIGHTS' CLAIMS, ISSUED OR
          PENDING, AND THE ABSENCE OF LATENT OR OTHER DEFECTS, WHETHER OR NOT
          DISCOVERABLE. NOTHING IN THIS AGREEMENT SHALL BE CONSTRUED AS A
          REPRESENTATION MADE OR WARRANTY GIVEN BY LICENSOR THAT THE PRACTICE BY
          LICENSEE OF THE LICENSE GRANTED HEREUNDER SHALL NOT INFRINGE THE
          PATENT RIGHTS OF ANY THIRD PARTY.

                                       6
<PAGE>

                       ARTICLE 9 - LIMITATION OF LIABILITY

          EXCEPT FOR BREACH OF SECTION 2.01, IN NO EVENT SHALL EITHER PARTY BE
          LIABLE FOR INCIDENTAL, SPECIAL, CONSEQUENTIAL OR PUNITIVE DAMAGES OF
          ANY KIND, INCLUDING ECONOMIC DAMAGE OR INJURY TO PROPERTY AND LOST
          PROFITS, REGARDLESS OF WHETHER SUCH PARTY SHALL BE ADVISED, SHALL HAVE
          OTHER REASON TO KNOW, OR IN FACT SHALL KNOW OF THE POSSIBILITY OF THE
          FOREGOING.

                             ARTICLE 10 - INDEMNITY

          Licensee shall indemnify and hold harmless Licensor, its officers,
          directors, employees, and affiliates from any third party product
          liability loss, claim, demand, action, liability and expense
          (including legal and expert fees and costs) arising out of, resulting
          from or related to the manufacture, sale, use or import of Licensed
          Products. Licensee shall control the investigation and defense of any
          such action alleging such liability, with counsel of its choice
          reasonably satisfactory to Licensor. Licensor shall cooperate in any
          defense at Licensee's expense. Licensee may settle any such action
          without Licensor's consent provided that there is no cost to Licensor
          and otherwise with Licensor's consent, which will not be withheld
          unreasonably.

                          ARTICLE 11 - CONFIDENTIALITY

   11.01  Each of the parties undertakes to maintain the confidentiality of the
          terms and conditions of this Agreement, provided that the parties may
          disclose the existence and the terms and conditions of this Agreement
          to their accountants, attorneys and in financial transactions, or as
          required to enforce their rights hereunder, or as otherwise may be
          required by law. Nothing contained herein shall prohibit either party
          from disclosing publicly, or otherwise disclosing to third parties,
          the existence of this agreement between the parties. The restrictions
          in this Section 11.01 shall cease to apply to a party with respect to
          information which has been disclosed publicly by the other party.

   11.02  Each party agrees that the terms and existence of this agreement
          shall not be used as evidence or otherwise in support of patent
          litigation between them.

                             ARTICLE 12 - ASSIGNMENT

          Licensee may not assign this Agreement, in whole or in part, without
          the prior written consent of Licensor. Notwithstanding the preceding
          sentence, except as provided in Section 6.02 (iii), Licensee may,
          without the consent of Licensor, transfer or assign all of its rights
          and obligations under this Agreement to any entity that is Licensee's
          successor in connection with a merger or sale or other transfer of all
          or substantially all of Licensee's business or assets, PROVIDED that
          such assignee agrees in writing to be bound by the terms and
          conditions of this Agreement.

                                       7
<PAGE>

                         ARTICLE 13 - DISPUTE RESOLUTION

          Except for the right of either party to apply to a court of competent
          jurisdiction for a temporary restraining order, a preliminary
          injunction, or other equitable relief, any and all claims, disputes or
          controversies arising under, resulting from, or related to this
          Agreement ("Dispute"), shall be resolved by negotiation and, if
          necessary, by binding and final arbitration, as follows. The party
          raising such Dispute shall promptly advise the other party in writing
          describing in reasonable detail the nature of such Dispute. The senior
          management of the parties shall by good faith negotiations attempt to
          resolve the Dispute within thirty (30) days of the notice of Dispute.
          In the event the senior management negotiations shall not resolve the
          Dispute in the thirty-day period, then either party may seek relief
          before a mutually acceptable arbitrator under the rules of the AAA in
          arbitration proceedings held in New York City, New York; provided,
          however, all substantive issues, including relief, shall be governed
          by, interpreted and construed in accordance with Section 14.01. All
          proceedings shall be conducted in the English language. Any award
          rendered in such arbitration may be enforced by either party in any
          Court of competent jurisdiction.

                         ARTICLE 14 - GENERAL PROVISIONS

   14.01  This Agreement shall be governed by, interpreted and construed in
          accordance with the laws of the Commonwealth of Pennsylvania. The
          parties irrevocably consent and submit to the exclusive jurisdiction
          of the state and federal courts of Pennsylvania, as applicable,
          subject to the dispute resolution procedures set forth in Article 13.

   14.02  Licensor acknowledges that it is subject to United States laws and
          regulations controlling the export of technical data, computer
          software and other commodities and agrees not to export or allow the
          export or re-export of such data, software or other commodities in
          violation of such laws and regulations.

   14.03  This Agreement may be signed in any number of counterparts, each of
          which shall be an original, with the same effect as if the signatures
          were upon the same instrument.

   14.04  This Agreement constitutes the entire agreement between the parties
          with respect to the subject matter hereof and supersedes all prior
          agreements, understandings and negotiations, both written and oral,
          between the parties with respect to the subject matter of this
          Agreement. No representation, inducement, promise, understanding,
          condition or warranty not set forth herein has been made or relied
          upon by either party hereto.

   14.05  In the event any provision of this Agreement is held by a tribunal of
          competent jurisdiction to be contrary to the law, the remaining
          provisions of this Agreement will remain in full force and effect. The
          parties hereto agree to replace such unenforceable provision with a
          new provision which has the most nearly similar permissible economic
          or other effect.

   14.06  No failure or delay by either party in enforcing any right or remedy
          under this Agreement shall be construed as a waiver of any future or
          other exercise of such right or remedy by such party. No waiver shall
          be effective unless made in writing and signed by an authorized
          representative of the waiving party.

   14.07  No modification of this Agreement shall be binding unless it is in
          writing and is signed by an authorized representative of the party
          against whom enforcement of the modification is sought.

                                       8
<PAGE>

   14.08  The parties to this Agreement are and shall remain independent
          contractors. Nothing herein shall be construed to create a partnership
          or joint venture between them, and neither shall have the power of
          authority to bind or obligate the other in any manner not expressly
          set forth herein.

   14.09  This Agreement shall not be construed for or against any party based
          on any rule of construction concerning who prepared this Agreement or
          otherwise.

                                       9
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed as of the day and year above first written.

CFM TECHNOLOGIES INC.                     STEAG ELECTRONIC SYSTEMS AG

Signature:   By: /S/ ROGER A. CAROLIN     Signature: By: /S/ JOHANNES BRINKMAN

Name:        Roger A. Carolin             Name:      Johannes Brinkmann

Title:       ____________________         Title:     ____________________

CFMT, INC.

Signature:   ____________________         Signature: ____________________

Name:        ____________________         Name:      ____________________

Title:       ____________________         Title:     ____________________

                                       10EXHIBIT 10.31

                                 AMENDMENT NO. 1

                    CHANGE OF CONTROL AND SEVERANCE AGREEMENT

     Amendment (hereinafter "Amendment") dated as of June 27, 2000 to a certain
Change of Control and Serverance Agreement (the "Agreement") dated April 10,
2000, by and between CFM Technologies, Inc., a Pennsylvania Business Corporation
having a place of business at 150 Oaklands Blvd., Exton, PA 19341 and Roger A.
Carolin, an individual residing at 158 Kentsdale Court, Malvern, PA 19355
("Carolin").

                                   WITNESSETH:

     WHEREAS, based upon a continuing desire to motivate Carolin's continued
employment, and in recognition of Carolin's continuing contribution to the
Company;

     NOW, THEREFORE, in consideration of the foregoing and the mutual promises
and covenants contained in the Agreement and herein, and intending to be legally
bound hereby, it is agreed to:

     1.   Delete Section 2 of the Agreement, in its entirety, and replace it
          with the following:

          "2. TERM

          This agreement shall terminate upon the first to occur of (i) five (5)
          years from execution hereof or (ii) two (2) years from the occurrence
          of an Event or upon the mutual agreement, in writing, of CFM and
          Carolin."

     2.   Delete Section 4(c) of the Agreement, in its entirety, and replace it
          with the following:

          "(c) TERMINATION BY CAROLIN FOR GOOD REASON. Any of the following
          actions or omissions by CFM or Successors and Assigns shall constitute
          good reason:

               (i)  Material breach by Successors and Assigns of any provision
                    of this Agreement which is not cured by Successors and
                    Assigns within fifteen (15) days of written notice thereof
                    from Carolin; or

               (ii) Any action by Successors and Assigns to intentionally harm
                    Carolin; or

              (iii) If, (i) upon the occurrence of an Event, Carolin's status,
                    title, position, and responsibilities are not expanded to
                    include responsibility for substantially all related
                    functional activities in the merger or combined
                    post-transition entity for which Carolin was responsible
                    immediately prior to the Event, or (ii) at any time
                    thereafter, a change occurs in Carolin's status, title,

<PAGE>

                    position, work location or compensation which, in either
                    event, in Carolin's reasonable judgment, represents a
                    material adverse change from his status, title, position,
                    work location, compensation, or responsibilities existing or
                    in effect prior to such change, Carolin may, at his sole
                    option by providing written notice, at any time during the
                    term of this Agreement, deem such change to be good reason
                    under this Section 4(c). It is specifically agreed that
                    service as President-Wet Processing Division, Mattson
                    Technology, Inc. shall constitute a material adverse change
                    from Carolin's present status, title, position and
                    responsibilities and that Carolin's performance in such
                    capacity shall not be deemed a waiver of this sentence.

               (iv) The failure of CFM to have obtained an agreement,
                    satisfactory to Carolin, from any Successors and Assigns to
                    assume and agree to perform this Agreement prior to the
                    occurrence of an Event.

               (v)  The election by Carolin to terminate his employment at any
                    time after May 1, 2001 and prior to the expiration of this
                    Agreement. Such election under this sub-section shall be
                    valid only in the event that Carolin shall have undertaken a
                    documented, good faith effort to locate another person to
                    assume his responsibilities.

     Carolin's right to terminate his employment pursuant to this Section 4(c)
shall not be affected by his incapacity due to disability.

     In the event of any action or omission constituting good reason (a "Good
Reason Event") (1) if Carolin has terminated after May 1, 2001 and prior to
expiration of this Agreement, and has undertaken a documented good faith effort
to locate another person to assume his responsibilities, any options to purchase
common stock of CFM or Successors and Assigns held by Carolin immediately prior
to the occurrence of an Event shall vest immediately as of the date of such
termination, (2) Successors and Assigns will pay to Carolin his target annual
bonus for the current fiscal year on a pro rata basis corresponding to the date
of termination, (3) Carolin shall, in any case, agree to serve as a consultant
to Successors and Assigns for up to twenty-six (26) days during the six (6)
months following termination hereunder at times and locations and with duties as
Carolin and Successors and Assigns may mutually agree, and (4) Successors and
Assigns will pay Carolin twenty-four (24) monthly payments equal to one twelfth
of Carolin's then current annual base salary plus annual target bonus and the
amount of $3,500 for each day of consulting in excess of twenty-six (26) days."

                                       2

<PAGE>

        IN WITNESS WHEREOF, the parties hereto, intending to be legally bound
hereby, have executed this Agreement as of the day and year first above written.

ROGER A. CAROLIN

By: /s/ ROGER A. CAROLIN                       Date: June 27, 2000
        ------------------

CFM TECHNOLOGIES, INC

By: /s/ LORIN J. RANDALL, Secretary            Date: June 27, 2000
        ----------------------------

                                       3

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00015-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00015-of-00352.parquet"}]]