PATENT SECURITY AGREEMENT

Exhibit 10.3

PATENT SECURITY AGREEMENT

This PATENT SECURITY AGREEMENT (“Agreement”) is made this 17^th day of February, 2006, by and between Biosource America, Inc., a Texas corporation, having its principal office at 2777 Allen Parkway, Sui te 800, Houston, Texas 77019  (“Grantor”), and BIOsource Fuels, LLC, a Wisconsin limited liability company, having its principal office at 3111 152^nd Avenue, Kenosha, Wisconsin 53144 (“Grantee”).

WHEREAS, Grantor is the owner of the U.S. patent applications listed on the attached Schedule A (the “Patent Applications”);

WHEREAS, Grantee has extended a loan to Grantor pursuant to the terms and conditions of that certain Promi ssory Note dated the date hereof (“Note”) made by Grantor in favor of Grantee;

WHEREAS, under a Security Agreement dated the date hereof (“Security Agreement”) between Grantor and Grantee, Grantor has granted to Grantee a security interest in certain of its assets (including the Patent Applications) to secure the performance of the obligations of Grantor under the Note; and

WHEREAS, Grantor and Grantee by this instrument seek to confirm and make a record of the grant of a security interest in the Patent Applicatio n.

NOW, THEREFORE, for good and valuable consideration, the receipt and adequacy of which are hereby acknowledged, Grantor does hereby acknowledge that it has granted to Grantee a security interest in all of Grantor’s right, title and interest in, to, and under the Patent Application. Grantor also acknowledges and confirms that the rights and remedies of Grantee with respect to the security interests in the Patent Application granted hereby are more fully set forth in the Note and the Security Agreement, the terms and provisions of which are incorporated herein by reference.

SCHEDULE A

U.S. Patent Applications

(but excluding any right, title and interest Mr. Kirk Cobb may have in U.S. Provisional App. Serial No. 60/443,049 as a named inventor thereon)

NOTE:  COMPLETE AND ATTACH FORM PTO 1595