The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2007
Filed:
Oct. 14, 2003
Applicants:
Mario D. Torres-cardona, Nuevo Leon, MX;
Gustavo Rodriquez, Sinaloa, MX;
George C. Schloemer, Longmont, CO (US);
Inventors:
Mario D. Torres-Cardona, Nuevo Leon, MX;
Gustavo Rodriquez, Sinaloa, MX;
George C. Schloemer, Longmont, CO (US);
Assignee:
DSM IP Assets B.V., Te Heerlen, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 67/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method is described for preparing astaxanthin esters from zeaxanthin by acylation of zeaxanthin with an acylating agent followed by contacting the esterified zeaxanthin with an oxidizing agent to produce esterified astaxanthin. The astaxanthin esters are more stable and show a better bioavailability than free astaxanthin when used in salmonid pigmentation.