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                                  EXHIBIT 10.17

April 28, 2004

Board of Directors
SulphCo, Inc.
850 Spice Islands Dr.
Sparks, NV  89431

Gentlemen:

SulphCo, Inc. (OTC Bulletin Board: SLPH) announced today that its Chairman and
CEO, Dr. Rudolf W. Gunnerman, has made a commitment to continue to finance
SulphCo up to $2,000,000.00, as required. This commitment is expected to satisfy
the financial requirements of the Company at least through the 2004 fiscal year.

Sincerely,

/s/ Rudolf W. Gunnerman

Rudolf W. Gunnerman
Chairman

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            SulphCo, Inc., 850 Spice Islands Drive, Sparks, NV 89431
        Voice: (775) 829-1310 Fax: (775) 829-1351 Email: info@sulphco.com<PAGE>

                                  Exhibit 10.18

                                 PROMISSORY NOTE

Principal Amount: $200,000                         Date of Note:  April 28, 2004

         FOR VALUE RECEIVED, the undersigned, SulphCo, Inc., a Nevada
corporation ("Borrower"), promises to pay in lawful money of the United States
of America to the order of Rudolf W. Gunnerman and Doris Gunnerman
(collectively, "Lender"), at such place as Lender may designate in writing from
time to time, the principal sum of Two Hundred Thousand and No/100 Dollars
($200,000.00), plus interest thereon as provided below.

1. INTEREST. The unpaid principal amount hereof from time to time outstanding
shall bear interest at a rate per annum equal to the Prime Rate (as hereinafter
defined) from time to time in effect. Accrued interest shall be payable on each
anniversary date of the making of this Note and at maturity, beginning with the
first interest payment on April 29, 2005. The term "Prime Rate" shall mean, as
of any point in time, the rate of interest then most recently announced by Bank
of America as its prime rate; and the applicable interest rate under this Note
shall change simultaneously with each change in the Prime Rate. Interest shall
be computed for the actual number of days elapsed on the basis of a year
consisting of 365, or when appropriate 366, days.

2. PAYMENTS AND TERM. The entire indebtedness of funded principal, if not sooner
paid, shall be due and payable upon demand made at any time after the first
anniversary date of the making of this Note (the "Maturity Date"). All payments
on account of the indebtedness evidenced by this Note shall be first applied to
any default interest and costs owed under this Note (if any) and then to
principal.

3. PREPAYMENT. The principal indebtedness evidenced by this Note may be prepaid,
in whole or in part, with or without interest, and without payment of a
prepayment fee.

4. DEFAULT. The occurrence of any one or more of the following shall constitute
an event of default under this Note:

         (i)      Failure to make any payment of principal or interest when due;
                  or
         (ii)     The occurrence of any other event of default under this Note
                  following ten (10) days written notice thereof to the
                  Borrower.

            Time is of the essence. If an event of default occurs under this
Note after the passage of applicable cure periods, (i) the entire principal
balance hereof shall, at the option of Lender, without notice, bear interest at
a rate equal to eighteen percent (18%) per annum (or the maximum rate permitted
by applicable law if that is less) from the date of the event of default until
such event of default is cured and (ii) the entire principal balance hereof and
all accrued interest shall immediately become due and payable (or issuable in
the case of stock) at the option of Lender, without notice. Lender's failure to
exercise any option hereunder shall not constitute a waiver of the right to
exercise the same for any subsequent event of default.

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5. COSTS AND ATTORNEYS' FEES. If an event of default occurs under this Note and
Lender consults an attorney regarding the enforcement of any of its rights under
this Note, or if this Note is placed in the hands of an attorney for collection,
or if suit be brought to enforce this Note, Borrower promises to pay all costs
thereof, including attorneys' fees. Said costs and attorneys' fees shall
include, without limitation, costs and attorneys' fees in any appeal or in a
proceeding under any present or future federal bankruptcy act or state
receivership.

6. SECURITY. This Note is unsecured.

7. WAIVER OF PRESENTMENT, ETC. Borrower hereby waives presentment and demand for
payment, notice of dishonor, protest and notice of protest.

8. GOVERNING LAW. This Note shall be construed, enforced and otherwise governed
by the laws of the State of Nevada.

Dated as of the 29th day of April, 2004.

SULPHCO, INC.

By:  /S/ KIRK S. SCHUMACHER
     ----------------------
         Kirk S. Schumacher
         President<PAGE>

                                  Exhibit 10.19

                             FINDER'S FEE AGREEMENT

THIS FINDER'S FEE AGREEMENT, made as of May 11, 2004 is between SULPHCO, INC.
("Company"), with the address at 850 Spice Islands Drive, Sparks, NV 89431, and
Vantage Investments Group, Inc. ("Consultant") with address at 770 Lexington
Avenue, Sixth Floor, New York, NY 10021.

BACKGROUND

Company and Consultant desire to enter into a business relationship whereby
Consultant will provide, on a best efforts basis, Consulting Services to
Company, including but not limited to: 1) Locating and securing funding, loans,
financing for Company 2) Locating and referring prospective investors.

This relationship is "non-exclusive" and shall not be construed as an "employee"
agreement, rather it is clearly understood by the parties that this is an
"Independent Contractor" and "Advisory" relationship in compliance with
Department of Labor and IRS requirements for such status. Consultant will be
paid a Finder's Fee for securing any funding for the Company.

NOW, THEREFORE, in consideration of the premises, and mutual covenants and
promises contained herein, intending to be legally bound hereby, Company and
Consultant agree as follows:

         1.       TERM. The term of this Agreement shall be three-month period
                  commencing on the date of this Agreement.

         2.       CONSULTANTS FEE COMPENSATION. Company will pay Consultant a
                  Finders Fee, consisting of both cash and stock. In cash, the
                  fee will be equal to 8.0% of the funds provided or paid to
                  Company by a Consultant referred investor(s) or venture
                  capital group(s) whether by way of equity or debt financing.
                  In stock, the fee will be 2% of the number of shares purchased
                  by referred investor(s). In the event the Company has no
                  registered shares available for the transaction, said shares
                  as required hereunder shall be registered, at no cost to
                  Consultant, at the same time as the investor(s).

         3.       INVESTOR IDENTIFICATION FOR FINDER'S CREDIT. Consultant will
                  identify to Company all prospective investor(s) by name,
                  location and other pertinent information. Since Company may
                  engage multiple Consultants, each seeking to secure funding
                  for the Company, the first consultant to register an investor
                  with the Company will be granted claim to the Finders Fee for
                  that investor so registered.

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         4.       TIMING OF PAYMENT. With respect to any fees collected by
                  Company, the Consultant's Fee shall be payable within 3 days
                  after Company receives any amount of funds attributable to
                  such payment. The Company reserves the absolute right, at all
                  times, to accept or reject any funding opportunity and client
                  opportunity brought forward by Consultant.

         5.       TERMINATION. At any time during the Term, either party hereto
                  may terminate this Agreement upon 30 days written notice to
                  the other party. Company shall be obligated to pay the
                  Consultant's Finders Fee with respect to all referred
                  investor(s) from Consultant and introduced by Consultant
                  during the term of this Agreement and for 24 months
                  thereafter..

         6.       GOVERNING LAW. This Agreement shall be governed by and
                  construed in accordance with the laws of the State of New
                  York.

         7.       COMPLETE AGREEMENT. This Agreement incorporates the entire
                  understanding of the parties with respect to matter of
                  Consultants Fees, and supersedes all prior written or oral
                  agreements between the parties on that subject, and shall be
                  binding upon each of the parties and their respective
                  successors in interest and assigns. This Agreement may be
                  modified only in writing executed by the parties hereto.
                  Neither party is obligated to the other and this Agreement is
                  only for purposes of ensuring the rights of both parties in
                  the event Consultant is successful in securing acceptable
                  funding or new clients for the Company.

         9.       DISPUTE RESOLUTION. All disputes between the parties relating
                  to this agreement shall be submitted to binding arbitration.
                  Either party may commence the arbitration by delivery of a
                  written notice to the other, describing the issue in dispute
                  and its position with regard to the issue. If the parties are
                  unable to agree on an arbiter with thirty (30) days following
                  delivery of such notice, the matter shall be submitted to the
                  New York Arbitration and Mediation Service upon seven (7) days
                  notice. Except as otherwise provided in this Agreement, the
                  arbitration shall be conducted in accordance with the rules of
                  the American Arbitration Association then in effect. The award
                  of the arbiter shall be final and binding, and judgment upon
                  an award may be entered in any court of competent
                  jurisdiction. In any such arbitration, the non-prevailing
                  party shall pay the costs and attorneys' fees of the
                  prevailing party, in addition to the costs of arbitration.

         10.      EXPENSES. The Company agrees to reimburse the Consultant any
                  and all reasonable expenses incurred in the performance of its
                  duties hereunder provided that such expenses are pre-approved
                  by the Company.

         11.      RELIANCE AND INDEMNIFICATION. In performing its services
                  hereunder, Consultant shall be entitled to rely, without
                  investigation, upon all information that is available from
                  public sources as well as all other information supplied to it
                  by or on behalf of the Company or its advisors, and except as
                  otherwise specifically agreed to, in writing, signed by both
                  parties, shall not in any respect be responsible for the
                  accuracy or completeness of, or have any obligation to verify,
                  the same or to conduct any appraisal of assets or liabilities
                  and shall be indemnified therefore.

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IN WITNESS WHEREOF, the parties hereto have executed this Agreement as the day
and year first above written.

ACCEPTED BY

VANTAGE INVESTMENTS GROUP, INC.                 SULPHCO, INC.

/S/ STEVEN E. TRABISH                           /S/ RUDOLF W. GUNNERMAN  5/11/04
---------------------                           --------------------------------
Signature             Date                      Signature                 Date
Steven E. Trabish, Managing Director            Rudy Gunnerman, Chairman and CEO

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