Document:

EXHIBIT 10.2
                                                              DOE Patent License

                       UNITED STATES DEPARTMENT OF ENERGY
                              WASHINGTON, D.C. 2058

                            EXCLUSIVE PATENT LICENSE

This  Agreement  made this 26 day of August,  2005,  by and  between  the United
States of America,  as  represented  by the United  States  Department of Energy
(hereinafter   called   "LICENSOR"),   and  HydroGen  LLC  (hereinafter   called
"LICENSEE").

ADDRESS OF LICENSEE:            1801 Route 51 South
                                Building 7
                                Jefferson Hills, PA 15025

LICENSED INVENTION(S):          U.S.    Patent    No.    4,978,591,     entitled
                                "Corrosion-free Phosphoric Acid Fuel Cell"; U.S.
                                Patent   No.   4,732,822,   entitled   "Internal
                                Electrolyte Supply System For Reliable Transport
                                Throughout  Fuel Cell Stacks";  U.S.  Patent No.
                                4,853,301,   entitled  "Fuel  Cell  Plates  With
                                Skewed Process Channels For Uniform Distribution
                                Of Stack  Compression  Load; and U.S. Patent No.
                                5,096,786,  entitled  "Integral  Edge  Seal  For
                                Phosphoric Acid Fuel Cells"

EFFECTIVE DATE:                 July 1, 2005

LICENSE TERMINATION DATE:       Upon expiration of the U.S. patents listed under
                                LICENSED INVENTIONS

PRACTICAL APPLICATION
TARGET DATE:                    December 1, 2005

SCOPE OF LICENSE:               In addition  to any  worldwide  rights  LICENSEE
                                already  has in  the  LICENSED  INVENTIONS,  the
                                exclusive  license  to make  and  sell  LICENSED
                                INVENTIONS in the United States of America.

WITNESETH:

WHEREAS:  LICENSOR is the owner of the above-identified LICENSED INVENTIONS;

WHEREAS:  LICENSEE'S predecessor company developed the LICENSED INVENTIONS under
a federal  grant,  and pursuant to that grant,  LICENSEE'S  predecessor  company
acquired an  unlimited,  royalty and bonus  free,  non-exclusive  license on the
LICENSED INVENTIONS, which license has been transferred to LICENSEE;
<PAGE>

WHEREAS: LICENSEE seeks to commercialize technology that was, in part, developed
as a result of the federal grant;

WHEREAS:  to the knowledge of LICENSOR and  LICENSEE,  no other person or entity
has sought to acquire a license on the LICENSED INVENTIONS, and the LICENSOR had
determined to allow some or all of the LICENSED  INVENTIONS to lapse, absent the
LICENSEE'S agreement to pay the maintenance fees for the LICENSED INVENTIONS;

WHEREAS: LICENSEE desires to obtain an exclusive license in the above-identified
LICENSED INVENTIONS.

WHEREAS:  The interests of Federal  Government  and the public will be served by
the granting of the license, as indicated by the LICENSEE'S  intentions,  plans,
and  ability to bring the  invention  to  practical  application,  or  otherwise
promote the invention's utilization by the public.

WHEREAS:  Exclusive  licensing is a reasonable  and necessary  incentive to call
forth the  investment  capital  and  expenditures  needed to bring the  LICENSED
INVENTIONS  to  practical  application,  or  otherwise  promote the  invention's
utilization by the public.

WHEREAS:  The  proposed  scope of  exclusivity  is not greater  than  reasonably
necessary  to provide the  incentive  for  bringing  the  invention to practical
application,  as proposed by LICENSEE or  otherwise  to promote the  invention's
utilization by the public.

NOW,  THEREFORE,  in consideration  of the foregoing  premises and of the mutual
covenants and  obligations  hereinafter  contained,  and other good and valuable
consideration, the Parties hereto agree as follows:

1. LICENSOR hereby grants to Licensee,  and Licensee hereby accepts,  subject to
the terms and conditions  recited, an exclusive license to practice the LICENSED
INVENTIONS as specified herein for the period of this license.

2. LICENSEE agrees to carry out the plan for development and/or marketing of the
invention  by the  practical  application  target  date set  forth  herein,  and
thereafter  to  continue  to  make  the  benefits  of  the  LICENSED  INVENTIONS
reasonably  accessible to customers in the United States and elsewhere.  In this
regard,  LICENSEE  agrees at a  minimum,  to expend at least  $1,000,000  within
twelve  months  of the date of the  license,  directed  toward  development  and
commercialization of LICENSED INVENTION.

3. The LICENSE may extend to subsidiaries of the LICENSEE, but is not assignable
without approval of the LICENSOR in writing.

4.  Sublicenses  under this  License may not be granted  without the approval of
LICENSOR.  Licensee shall promptly  furnish LICENSOR with a copy of any proposed
sublicense,  and  if  in a  foreign  language,  an  English  text  thereof.  Any
sublicense  shall not be effective  until  approval is secured from  LICENSOR in
writing. A sublicense shall make reference to the License,  including the rights
retained by the Government.
<PAGE>

5.  LICENSEE  agrees that any  products  embodying  the LICENSED  INVENTIONS  or
produced through the use of the inventions will be manufactured substantially in
the United States.

6. LICENSEE shall submit periodic  written  reports,  annually within 30 days of
the  anniversary  date of this  License and when  specifically  requested by the
LICENSOR,  on its  efforts  to  bring  the  LICENSED  INVENTIONS  to a point  of
practical  application,   with  particular  reference  to  the  development  and
marketing  plan  submitted,  and the  extent  to which the  LICENSEE  thereafter
continues to make the benefits of the  invention  reasonably  accessible  to the
public.

7. ROYALTY PROVISIONS.  This License is granted free of royalty or other payment
obligations by LICENSEE.

8. MAINTENANCE COSTS OF THE LICENSED INVENTIONS.  LICENSEE has paid or shall pay
all costs  for  maintaining  the  LICENSED  INVENTIONS  at the U.S.  Patent  and
Trademark Office.

9. The license shall be subject to the  irrevocable,  royalty-free  right of the
Government  of the United  States to practice  and have  practiced  the LICENSED
INVENTIONS  on  behalf  of the  United  States  and  on  behalf  of any  foreign
government or international  organization under any existing or future treaty or
agreement  with the United  States.  LICENSOR  also  reserves the right to grant
research licenses for non-commercial use(s) of LICENSED INVENTIONS.

10.  LICENSOR  reserves the right to require  LICENSEE to grant  sublicenses  to
responsible applicants, on reasonable terms, when necessary to fulfill health or
safety needs.

11.  LICENSEE shall promptly  report to LICENSOR and change in mailing  address,
name or company  affiliation  during the period of this  License,  and  LICENSEE
shall promptly report discontinuance of his making the benefits of this LICENSED
INVENTION reasonably accessible to the licensed country(s).

12.  LICENSOR  makes no warranty  or  representation  as to the  validity of any
licensed patent(s) or patent application(s) or that the exercise of this License
will not result in the infringement of any patent(s),  nor shall LICENSOR assume
any liability whatsoever resulting from the exercise of this License.

13. LICENSOR makes no representations, extends no warranties of any kind, either
express or implied  and assumes no  responsibilities  whatever  with  respect to
manufacture,  use,  sale, or other  disposition  by LICENSEE,  or its vendees or
transferees, of products incorporating or made by use of LICENSED INVENTIONS.

14. The grant of this License or anything related thereto shall not be construed
to confer on any person any immunity from or defenses  under the antitrust  laws
of from a  charge  of  patent  misuse,  and the  acquisition  and use of  rights
pursuant to this License  shall not be immunized  from the operation of State or
Federal law by reason of the source of grant.

15. Nothing  contained in this License shall be interpreted to give LICENSEE any
rights with respect to any invention(s) other than the LICENSED INVENTIONS.

16. If the License involves application(s) for Letters of Patent, LICENSOR makes
no  representation  or warranty  that Letter of Patent will issue on such patent
applications (s).
<PAGE>

17. This License may be terminated  by LICENSOR in whole or in part,  (a) if DOE
determines  that licensee is not executing the plan  submitted  with its request
for  license,   and  that  licensee  has  not  otherwise   demonstrated  to  the
satisfaction  of DOE that it has taken,  or can be  expected  to take within the
practical application target period specified herein, effective steps to achieve
practical  application  of the invention and to continue  thereafter to make the
benefits of the invention  reasonably  accessible to the public, (b) for failure
to make any  payments or periodic  reports  required  by this  License,  (c) for
willfully making a false statement,  willful omission, or misrepresentation of a
material  fact in the License  application  and follow-up  correspondence  which
resulted in this License,  or an any required report, (d) for substantial breach
of any covenant or agreement  contained  herein,  or (e) of DOE determines  that
such action is  necessary  to meet  requirements  for public use as specified by
Federal  regulations used after the date of the license,  and such  requirements
are not reasonably satisfied by the LICENSEE.

18. Before modifying or terminating  this License for any cause,  LICENSOR shall
furnish  LICENSEE,  and to any  sublicensee  of  record,  a  written  notice  of
LICENSOR'S intention to modify or terminate the License, with reasons therefore,
and LICENSEE,  and any sub licensee of record,  shall be allowed sixty (60) days
from the date of the  mailing of such notice to remedy any breach of any term or
condition referred to in the notice, or to shoe cause why the License should not
be modified or terminated.

19. It shall be  sufficient  giving  of any  notice  or other  communication  in
writing by a Party to this License to the other Party,  if the Party desiring to
give such notice or other  communication  shall deposit a copy of such notice or
other  communication  in the Post  Office  for  transmission  by  registered  or
certified  mail in an  envelope  properly  addressed  to the  address  set forth
herein, or at such other address furnished as specified herein. The date of such
notice or other  communication  shall be  construed to be the date on which said
copy was  deposited  in the Post Office in an envelope  properly  addressed  and
mailed,  as  aforesaid.  The Post  Office  receipt  showing  the deposit of such
envelope  and the date of such  deposit  shall be prima facie  evidence of these
facts.

20. LICENSEE has a right to appeal,  in accordance with procedures  specified in
10 CFR 781, any decision concerning the modification or termination, in whole or
in part, of this License.

21.  LICENSEE may  terminate  this  License,  after the first or any  subsequent
anniversary  date of this  License,  upon not less than  sixty  (60) days  prior
written notice to the LICENSOR.

22. LICENSEE is responsible for compliance  with all applicable  Federal,  state
and local regulatory  requirements,  including,  without limitation,  compliance
with U.S. Export Control statutes and regulations.

23. LICENSEE shall mark all licensed products in accordance with the statutes of
the United States relating to marking of patented articles (35 U.S.C. 287).

24. In the event of any legal  proceeding  challenging  the validity of LICENSED
INVENTIONS, LICENSOR shall promptly provide notice thereof to LICENSEE. LICENSEE
and LICENSOR  shall,  within  thirty days of said notice,  mutually  agree on an
appropriate  level of cost-sharing  of direct and indirect  expenses that may be
involved in participating in defending the validity of LICENSED  INVENTIONS.  If
mutual agreement  cannot be reached within said thirty day period,  LICENSOR may
take any  action  at its  discretion  concerning  the  subject  matter  thereof,
including allowing the LICENSED INVENTION, and therefore this EXCLUSIVE LICENSE,
to lapse.
<PAGE>

IN WITNESS  WHEREOF,  the Parties have executed  this  Agreement as the date and
year first written above.

                      UNITED STATES DEPARTMENT OF ENERGY

                      BY:  /s/ PD
                         -------------------
                      Assistant General Counsel
                      for Technology Transfer
                      and Intellectual Property

WITNESS:

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

                       HYDROGEN, LLC

                       BY: /s/ Joshua Tosteson
                           -------------------------
                           Joshua Tosteson President

WITNESS:

-------------------Exhibit 4.2

              PROMISSORY NOTE CANCELLATION AND REISSUANCE AGREEMENT

THIS PROMISSORY NOTE CANCELLATION AND REISSUANCE AGREEMENT ("Agreement") is made
and entered into as of February 28, 2005 (the "Effective Date"), by and between
Padova International, Inc., a Nevada corporation ("Maker"), and Ron & Dori Arko,
an individual(s) residing at_______________________________________ , California
("Holder").

                                    RECITALS

A. On the terms and conditions set forth herein, (i) Maker and Holder (the
"Parties") agree to cancel that certain promissory note between Maker and Holder
dated _____,____ bearing interest at two percent (2%) monthly (a copy of which
is attached as Exhibit A) (the "Original Note"); (ii) Maker will issue Holder a
new non-interest bearing promissory note (the "New Note") (a copy of which is
attached as Exhibit B); and (iii) Holder will convert the accrued but unpaid
interest owed under the Original Note (the "Unpaid Interest") to Maker's common
stock, par value $.001 per share at a price of $.25 per share.

B. This Agreement, together with Exhibits A and B, each of which are attached
hereto and incorporated herein by this reference, and any additional exhibits,
schedules, or attachments as set forth herein, are referred to collectively
herein as the "PCRA".

                                    AGREEMENT

1. CANCELLATION OF ORIGINAL NOTE AND RELEASE. Subject to the terms and
conditions set forth herein, Holder agrees to deliver to Maker at Closing
(defined below) the Original Note marked across its face "CANCELLED" and upon
such delivery thereby shall forever release and discharge Maker of any and all
of its obligations under the Note, including any obligation to pay principal and
interest, except as set forth in this Agreement.

2. ISSUANCE OF NEW NOTE. Subject to the terms and conditions set forth herein,
Maker agrees to deliver to Holder at Closing (defined below) the New Note and
upon such delivery thereby shall be obligated to pay the principal of the New
Note, which is non-interest bearing, on the terms of the New Note.

3. CONVERSION OF UNPAID INTEREST TO EQUITY. Holder hereby agrees to convert his
accrued but unpaid interest owed under the Original Note to the Maker's common
stock at a conversion price of $.25 per share for every one dollar ($1.00) of
Back Interest owed to the Holder. The Parties agree that the amount of Unpaid
Interest due for purposes of this Agreement is six thousand, three hundred and
seventy three ($6,373) dollars.

<PAGE>

4. PAYMENT IN FULL SATISFACTION AND DISCHARGE OF NOTE. Upon Closing, Maker
agrees to deliver to Holder the following consideration ("Conversion Payment").
Twenty-five thousand, four hundred and ninety-two (25,492) shares of Common
Stock of Padova International USA, Inc., par value $.001 per share (the
"Shares"), representing $6,373 of Unpaid Interest at a conversion rate of $.25
per share. The Shares shall bear the following restrictive legend:

      ALL  SHARES OF  CAPITAL  STOCK  ISSUABLE  THEREUNDER,  HAVE NOT BEEN
      REGISTERED  UNDER  THE  UNITED  STATES  SECURITIES  ACT OF 1933,  AS
      AMENDED ("THE  SECURITIES  ACT"), OR ANY STATE  SECURITIES LAWS, AND
      MAY  NOT  BE  SOLD,  OFFERED  FOR  SALE,  PLEDGED,  HYPOTHECATED  OR
      OTHERWISE  DISTRIBUTED  IN THE ABSENCE OF AN EFFECTIVE  REGISTRATION
      STATEMENT  FILED UNDER THE SECURITIES  ACT AND ANY APPLICABLE  STATE
      SECURITIES LAWS OR EXEMPTIONS  THEREFROM,  SUCH EXEMPTIONNS,  AT THE
      OPTION OF THE  COMPANY,  TO BE  EVIDENCED  BY AN  OPINION OR COUNSEL
      SATISFACTORY TO THE COMPANY.

5. CLOSING; CLOSING DATE. The closing of the transactions contemplated hereby
shall be effective as of the delivery date of the closing deliveries described
below ("Closing") at the offices of Padova International USA, Inc. at 10:00 a.m.
on February __, 2005, or at such time and place as the Parties mutually agree
("Closing Date").

      a.    Holder shall deliver to Maker the Original Note marked across the
            face "Cancelled" (incorporated by reference herein as Exhibit A);
            and

      b.    Maker shall deliver to Holder the New Note (attached hereto as
            Exhibit B); and

      c.    Maker shall deliver to Holder a stock issuance letter for the
            Shares.

6. WAIVERS. No action taken pursuant to this Agreement, including any
investigation by or on behalf of any party will be deemed to constitute a waiver
by the party taking such action, or compliance with any representation,
warranty, covenant or agreement contained herein. The waiver by any party hereto
of a breach of any provision of this Agreement shall not operate or be construed
as a waiver of any subsequent breach. The waiver by any party hereto at or
before the Closing Date of any condition to its obligations hereunder which is
not fulfilled shall preclude such party from seeking redress from the other
party hereto for breach of any representations, warranty, covenant or agreement
contained in this Agreement.

7. RELEASES.

      a. The Holder jointly and severally hereby forever release, discharge,
acquit and forgive from any and all claims, actions, suits, demands, agreements,
and each of them, if more than one, liabilities, judgments, and proceedings both
at law and in equity arising from the beginning of time to the date of these
presents and as more particularly related to or arriving from the issuance and
subsequent cancellation of the Original Note and the non-payment of Accrued
Interest in cash. In regard to the Original Note, the Parties, and each of them,
agree to and do hereby waive and relinquish all rights and benefits afforded
under the provisions of Section1542 of the Civil Code of the State of
California, which provides as follows:

<PAGE>

            "A general release does not extend to claims which the creditor does
            not know or suspect to exist in his favor at the time of executing
            the release, which if known by him must have materially affected his
            settlement with the debtor."

      b. If the Holder has instituted any legal proceedings against the Maker
settled by this release, the Holder covenants to have them dismissed at the
Holder's cost with express prejudice to bringing further proceedings against the
Maker arising out of the same matter.

      c. The Holder also covenants not to make any claim or institute any
proceedings against any person who might claim over against or claim
contribution or indemnity from the Maker in connection with any matter for which
this release is given.

      d. The Holder also acknowledges that the Maker does not admit liability to
the Holder in connection with any matter for which this release is given.

      e. This release shall be binding upon and inure to the benefit of the
parties, their successors, assigns and personal representatives.

      f. This release applies only to the foregoing, and no other debt,
obligation, agreement or liability by and between the parties, which, if
existing, shall survive this release.

8. BINDING EFFECT: BENEFITS. This Agreement shall inure to the benefit of the
Parties hereto and shall be binding upon the parties hereto and their respective
successors and assigns, heirs and legal representatives. Except as otherwise set
forth herein, nothing in this Agreement, express or implied, is intended to
confer on any person other than the parties hereto or their respective
successors and assigns any rights, remedies, obligations, or liabilities under
of by reason of this Agreement.

9. GOVERNING LAW; JURISDICTION; VENUE; REMEDIES; INDEPENDENT LEGAL COUNSEL. This
Agreement shall be interpreted and construed as to both validity and performance
and enforced in accordance with and governed by the laws of the State of
California, without giving effect to the choice of law principles thereof. The
Parties agree that any action hereunder will be held exclusively in the courts
in the State of California. The Parties acknowledge that remedies at law,
including monetary damages, may be inadequate to remedy a breach of certain
material terms herein, including Holder's delivery of the Note, and the Parties
agree that equitable remedies may be necessary to enforce such terms and
covenants, including specific performance. Holder and Maker acknowledge that the
terms of this Agreement have been negotiated by the Parties hereto and each of
them has had a full opportunity to receive independent business, tax and legal
counsel with respect to this Agreement and the transactions contemplated herein.

10. COUNTERPARTS. This Agreement may be executed in counterpart originals, each
of which shall constitute an executed original and together shall constitute a
fully-executed document.

11. NOTICES. All notices, requests, demands, and other communications under this
Agreement shall be in writing and shall be deemed to have been duly given on the
date of service if served personally on the party to whom notice is to be given,
or within 72 hours after mailing, if mailed to the party to whom notice is to be
given, by first-class mail, registered or certified, postage prepaid, and
properly addressed to the party at the address set forth below, or any other
address that a party may designate by written notice to the others.

<PAGE>

      Maker:                                             Holder:
      -----                                              ------

      Padova International USA, Inc.                     ________________
      1284 Puerta Del Sol, Suite 150                     ________________
      San Clemente, CA 92673                             ________________
      Phone: 949-498-5990                                Phone:
      Fax: 949-498-6122                                  Fax:
      Attn: Donald Dallape                               Attn:

      Copy to:       Todd M. Pitcher
                     Fax: 858-279-1799

Exhibits:

      Exhibit A:          Original Promissory Note
      Exhibit B:          New Promissory Note

IN WITNESS WHEREOF, the parties have executed and delivered the PCRA for all
purposes as of the Effective Date.

Maker:                                     Holder:

  By:                                         By:
       ---------------------------------           --------------------------
                   Signature                               Signature

  Name:                                       Name:
       ---------------------------------           --------------------------
               Print or Type Name                      Print or Type Name

<PAGE>

                                    EXHIBIT B
                                  The New Note

                         PAYMENT IN KIND PROMISSORY NOTE

$64,800.00
February 28, 2005

                                                        San Clemente, California

FOR VALUE RECEIVED, the undersigned, Padova International USA, Inc., a Nevada
corporation ("Maker"), hereby promise to pay, to Ron & Dori Arko, or order
("Payee"), the principal sum of sixty-four thousand eight hundred and 00/100
Dollars ($64,800.00), with interest on the unpaid principal at the rate of two
percent (2%) per annum until February 28, 2006 ("due date"). Principal and
interest shall be payable as follows: Interest only shall be paid annually; at
Payee's option, either in Maker's common stock or cash until the due date, at
which time the remaining outstanding balance of the principal, any accrued but
unpaid interest and all other sums hereunder shall be payable in full.

If Payee elects for Maker to make an interest payment in its common stock, Maker
shall calculate the amount of interest due on the anniversary of the date of
this Note and convert such amount into the Maker's common stock at a conversion
price of price of $.25 per share for every one dollar ($1.00) of Interest owed
to the Holder. If not so paid and at the option of Holder, or its assigns, all
principal and interest shall become immediately due and payable.

If not so paid and at the option of Holder, or its assigns, all principal and
interest shall become immediately due and payable.

Interest shall be computed on the basis of a 365-day year and actual days
lapsed. Maker shall have the privilege of prepaying the principal under this
Note in whole or in part, without penalty or premium at any time. All payments
hereunder shall be applied first to interest, then to principal.

Maker shall pay upon demand any and all expenses, including reasonable attorney
fees, incurred or paid by Holder of this Note without suit or action in
attempting to collect funds due under this Note. In the event an action is
instituted to enforce or interpret any of the terms of this Note, including but
not limited to any action or participation by Maker in, or in connection with, a
case or proceeding under the Bankruptcy Code or any successor statute, the
prevailing party shall be entitled to recover all expenses reasonably incurred
at, before and after trial and on appeal or review, whether or not taxable as
costs, including, without limitation, attorney fees, witness fees (expert and
otherwise), deposition costs, copying charges and other expenses.

<PAGE>

This Note is executed in connection with the transaction set out in that certain
Promissory Note Cancellation and Re-issuance Agreement of even date, by and
among the Maker and Holder and is subject to the terms thereof.

All parties to this Note hereby waive presentment, dishonor, notice of dishonor,
and protest. All parties hereto consent to, and Holder is hereby expressly
authorized to make, without notice, any and all renewals, extensions,
modifications, or waivers of the time for or the terms of payment of any sum or
sums due hereunder, or under any documents or instruments relating to or
securing this Note, or of the performance of any covenants, conditions or
agreements hereof or thereof or the taking or release of collateral securing
this Note. Any such action taken by Holder shall not discharge the liability of
any party to this Note.

This Note has been executed and delivered in the State of California and shall
be governed and construed in accordance with the laws of the State of
California.

Padova International USA, Inc.
A Nevada corporation

--------------------------------------------
By:
Its:

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