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:
Apr. 23, 1996
Filed:
Apr. 28, 1994
Applicant:
Inventors:
Frederic A Graves, Ham Lake, MN (US);
Daniel D Gallaher, Roseville, MN (US);
Assignee:
Humanetics Corporation, St. Louis Park, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
585351 ; 585854 ; 585855 ;
Abstract
A carotenoid-enriched fraction is extracted from natural sources, such as carrots, by (i) separating the carotenoid-containing natural source into a carotenoid-containing liquid fraction and a pulp fraction, (ii) adding a carotenoid precipitation agent including calcium chloride, calcium hydroxide, calcium lactate or calcium gluconate to the liquid fraction to form a carotenoid-enriched solid precipitate, and (iii) separating the carotenoid-enriched solid precipitate from the carotenoid-depleted liquid portion.