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:
Oct. 26, 1999
Filed:
Jul. 18, 1997
Applicant:
Inventor:
Gustavo Rodriguez, Sinaloa, MX;
Assignee:
Prodemex, S.A. DE C.V., , MX;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568834 ; 568816 ; 568822 ; 568823 ; 568824 ; 568825 ; 568832 ; 568906 ; 568913 ;
Abstract
A method of isomerizing lutein to yield a mixture of epimers of zeaxanthin includes the following steps: mixing a lutein-containing extract in a glycol solution to obtain a mixture, treating the mixture with alkali to obtain an alkali-containing mixture, reacting the alkali-containing mixture in the presence of heat for a duration consistent with achieving a desired level of isomerization of lutein to zeaxanthin.
Rodriguez, Gustavo. (1999). Pigmenting efficiency of a natural xanthophyll by isomerization (U.S. Patent No. 5973211). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5973211
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile