Document:

EXHIBIT 10.1

                           ASSIGNMENT OF PATENT RIGHTS
This Assignment of Patent Rights (the  "Assignment") is made and effective as of
July 18,  2003 (the  "Effective  Date") by and  between  Dtomi,  Inc.,  a Nevada
corporation ("Assignor"), and John Simpson, an individual ("Assignee").

                                    RECITALS

WHEREAS,  Assignor is the owner of the air spring powered  lowerable  suspension
assembly patent, Patent No. 6,530,580 (the "Patent"); and

WHEREAS,  Assignor had previously been assigned the Patent by Assignee by way of
that certain  Assignment of Patent Rights,  attached  hereto as EXHIBIT A, dated
April 7, 2003, and that certain Asset  Purchase  Agreement,  attached  hereto as
EXHIBIT B, dated April 7, 2003; and

WHEREAS  Assignor and Assignee  have  entered into that certain  Mutual  Release
Agreement ("Mutual Release Agreement"), attached hereto as EXHIBIT C, dated July
18, 2003, terminating the rights, obligations,  duties, and covenants created in
that certain Asset Purchase Agreement; and

WHEREAS,  pursuant to the Mutual  Release  Agreement,  Assignor is  obligated to
transfer,  and Assignee is entitled to receive all of Assignor's  right,  title,
and  interest  in and to the Patent  and all  ownership  interest  in all patent
rights associated with the Patent.

                                    AGREEMENT

         NOW THEREFORE,  in consideration of the mutual covenants and provisions
of this Assignment,  and other good and valuable  considerations  as further set
forth in other  agreements  between the parties,  the receipt and sufficiency of
which are hereby acknowledged, the Parties, intending to be legally bound, agree
as follows:

         1. ASSIGNMENT.

         (a) As of the Effective Date, Assignor hereby,  assigns,  transfers and
sets over to Assignee all of Assignor'  right,  title and interest in and to the
Patent, including all common law rights, all goodwill and all claims for damages
by reason of any past  infringement  and any other right or interest he may have
in the Patent and all other  patent  applications,  improvements,  reissues  and
inventions arising  therefrom,  for Assignee's own use and enjoyment and the use
and enjoyment of Assignee's successors, assigns and other legal representatives,
to the end of the term for which said  Patent is granted or  reissued,  as fully
and  entirely  as the same would have been held and  enjoyed by Assignor if this
Assignment had not been entered into.  Assignee hereby accepts the assignment of
such rights, subject to the terms and conditions of this Assignment.

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          (b) Upon Assignee's request, Assignor will, without charge to Assignee
and at Assignor's sole cost and expense,  sign all papers, take all lawful oaths
and take all other actions  necessary,  desirable or reasonably  appropriate  to
record such  assignments  and to secure and  maintain  the Patent in any and all
countries  and to vest  free,  clear and  lien-free  title in and to the  Patent
solely in Assignee.

         (c)  Assignor  hereby  agrees that a copy of this  Assignment  shall be
deemed a full legal and formal equivalent of any assignment,  consent to file or
like document which may be required in any country for any purpose.

         2. INDEMNITY.

         (a) Assignor  agrees to indemnify  and hold  Assignee and his nominees,
successors,  assigns, affiliates, agents and employees, harmless of and from any
and all liabilities,  claims, causes of action, penalties, demands and expenses,
of any kind or nature  whatsoever to the extent arising out of,  resulting from,
relating to or incident to the Assignor's obligations or use of the Patent prior
to and including the Effective Date and the incorrectness of any  representation
or warranty of Assignor  contained in this Assignment,  and all expenses related
thereto, including, without limitation, court costs and attorneys' fees.

         (b) Assignee  agrees to indemnify  and hold  Assignor and his nominees,
successors,  assigns, affiliates, agents and employees, harmless of and from any
and all liabilities,  claims, causes of action, penalties, demands and expenses,
of any kind or nature  whatsoever to the extent arising out of,  resulting from,
relating  to or  incident  to  Assignee's  obligations  or  use  of  the  Patent
subsequent to the Effective Date and all expenses  related  thereto,  including,
without limitation, court costs and attorneys' fees.

          3. REPRESENTATIONS AND WARRANTIES. Assignor represents and warrants to
Assignee as follows:

(a) The Patent is in full force and effect and  entitled to all  privileges  and
protections  accorded to the Patent under  applicable  laws,  Assignor is not in
default  under any terms of the Patent  and the  Patent  has not been  assigned,
terminated, modified or amended;

(b) Assignor holds free and clear title to the Patent, free from any lien, claim
or defect  against  such  title,  and has the lawful  right to convey all of his
respective interests in the Patent to Assignee; and

(c)  Assignor's  conveyance  of its  interest  in the  Patent to  Assignee,  the
execution and delivery of this Assignment by Assignor,  and the  consummation of
the transactions as contemplated hereby, does not and will not violate or result
in a material  violation of any  provision of any existing law or  regulation or
any order, award or decree of any court,  arbitrator or governmental  authority,
by which Assignor or the Patent are bound.

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         4. COUNTERPART AND FACSIMILE EXECUTION. This Assignment may be executed
in one or more  counterparts,  each of which  shall be  deemed an  original  and
together which shall constitute one and the same instrument.  Executed copies of
this Assignment transmitted by telecopier shall be valid and binding.

         IN WITNESS  WHEREOF,  the parties hereto have caused this Assignment to
be executed and delivered as of the Effective Date.

                                  ASSIGNOR:
                                  DTOMI, INC.:

                                 -------------------------------------------
                                  By: David M. Otto
                                  Title: Chairman of the Board of Directors

STATE OF WASHINGTON
                                        ss
COUNTY OF
          --------------------------

I certify that I know or have  satisfactory  evidence  that DAVID M. OTTO is the
person who appeared before me, and said person acknowledged that (he/she) signed
this  instrument,  on oath stated that  (he/she) was  authorized  to execute the
instrument and acknowledged it as the CHAIRMAN OF THE BOARD of DTOMI, INC. to be
the free and voluntary act of such party for the uses and purposes  mentioned in
the instrument.

         WITNESS my hand and official seal hereto affixed this _____ day of __
________, 2003.

                           -----------------------------------------------------
                           Notary Public in and for
                           the State of Washington,
                           residing at:

                           ----------------------------------.

                           My commission expires_________.

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<PAGE>

         IN WITNESS  WHEREOF,  the parties hereto have caused this Assignment to
be executed and delivered as of the Effective Date.

                                        ASSIGNEE:

                                        --------------------------------------
                                        By: John Simpson

STATE OF WASHINGTON
                                        ss
COUNTY OF
          --------------------------

I certify  that I know or have  satisfactory  evidence  that JOHN SIMPSON is the
person who appeared before me, and said person acknowledged that (he/she) signed
this  instrument,  on oath stated that  (he/she) was  authorized  to execute the
instrument  and  acknowledged  it to be the free and voluntary act of such party
for the uses and purposes mentioned in the instrument.

         WITNESS my hand and official seal hereto affixed this _____ day of
_________, 2003.

                            ---------------------------------------------------
                            Notary Public in and for
                            the State of Washington,
                            residing at:

                            ----------------------------------.

                            My commission expires_________.

                                       4EXHIBIT 10.2

                    MUTUAL RELEASE AND TERMINATION AGREEMENT

This Mutual  Release and  Termination  Agreement (the  "Agreement")  is made and
effective as of July 18, 2003 (the "Effective  Date") by and between Dtomi, Inc.
("Dtomi"),  a Nevada corporation,  and John Simpson ("Simpson"),  an individual,
(collectively, the "Parties").

                                    RECITALS

         WHEREAS,  the Parties  entered into an Asset  Purchase  Agreement  (the
"APA") dated as of April 7, 2003; and

         WHEREAS,  Dtomi  is the  owner  of the  air  spring  powered  lowerable
suspension assembly patent, Patent No. 6,530,580 (the "Patent"); and

         WHEREAS, the Parties have determined to terminate the APA.

                                    AGREEMENT

         NOW, THEREFORE, in consideration of the mutual covenants and agreements
set forth in this Agreement, and for other good and valuable consideration,  the
receipt and sufficiency of which are hereby acknowledged, the Parties, intending
to be legally bound, agree as follows:

         1. TERMINATION OF APA. The Parties agree that,  effective  immediately,
the APA is terminated.

         2. ASSIGNMENT OF PATENT.  Dtomi agrees to assign its right,  title, and
interest in and to the Patent,  and all ownership  interest in all patent rights
associated with the Patent, pursuant to that certain Assignment of Patent Rights
entered into by the Parties on July 18, 2003, to Simpson.

         3. ENTIRE AGREEMENT.  This Agreement  supercedes all prior discussions,
representations,  warranties and  agreements,  both written and oral,  among the
Parties with  respect to the subject  matter  herein,  and contains the sole and
entire agreement among the Parties with respect to the subject matter herein. No
prior  drafts of this  Agreement  and no words or  phrases  from any such  prior
drafts shall be admissible into evidence in any action, suit or other proceeding
involving this Agreement.

         4. GOVERNING LAW. This Agreement shall be interpreted under the laws of
the  State of  Washington  without  reference  to  Washington  conflicts  of law
provisions.

         5. VENUE.  The parties to this Agreement  agree that any action on this
Agreement shall be brought in a court of competent  jurisdiction located in King
County, Washington.

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         6.  ARBITRATION.  If at any time during the term of this  Agreement any
dispute,  difference  or  disagreement  shall  arise  upon or in  respect of the
Agreement,  and  the  meaning  and  construction  hereof,  every  such  dispute,
difference and disagreement shall be referred to a single arbiter agreed upon by
the parties,  or if no single arbiter can be agreed upon, an arbiter or arbiters
shall be  selected  in  accordance  with the rules of the  American  Arbitration
Association  and such dispute,  difference or  disagreement  shall be settled by
arbitration  in  accordance  with the then  prevailing  commercial  rules of the
American  Arbitration  Association,  and judgment upon the award rendered by the
arbiter may be entered in any court having jurisdiction thereof.

         7.  ATTORNEY  FEES.  In the  event an  arbitration,  suit or  action is
brought by any party under this Agreement to enforce any of its terms, or in any
appeal  therefrom,  it is agreed that the prevailing  party shall be entitled to
reasonable  attorneys'  fees to be fixed by the  arbitrator,  trial court and/or
appellate court.

         8. COUNTERPARTS.  This Agreement may be executed in counterparts,  each
of which will be deemed an original,  but all of which together will  constitute
one and the same  instrument.  Executed copies of this Agreement  transmitted by
telecopier shall be valid and binding.

         9. TITLES AND CAPTIONS.  All article,  section and paragraph  titles or
captions  contained in this Agreement are for convenience  only and shall not be
deemed part of the context nor affect the interpretation of this Agreement.

         10.  CONSTRUCTION.   The  parties  have  participated  jointly  in  the
negotiation  and  drafting  of this  Agreement.  In the  event an  ambiguity  or
question of intent or interpretation  arises,  this Agreement shall be construed
as if drafted jointly by the parties and no presumption or burden of proof shall
arise  favoring or  disfavoring  any party by virtue of the authorship of any of
the provisions of this Agreement. Any reference to any federal, state, local, or
foreign  statute  or law  shall  be  deemed  also  to  refer  to all  rules  and
regulations promulgated thereunder,  unless the context requires otherwise.  The
word "including" shall mean including without limitation.

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<PAGE>

         IN WITNESS  WHEREOF,  the parties  have  executed  and  delivered  this
Agreement as of the date first written above.

                                 By:  ________________________________
                                 Name:  John Simpson

                                  DTOMI, INC.

                                 By:  ________________________________
                                 Name: David M. Otto
                                 Title: Chairman of the Board of Directors

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