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, 2001
Filed:
Jun. 09, 2000
Applicant:
Inventors:
Toshiki Mori, Niigata-ken, JP;
Naoyuki Katayama, Niigata-ken, JP;
Tsuyoshi Kajiyashiki, Niigata-ken, JP;
Masahiko Kitayama, Niigata-ken, JP;
Assignee:
Kuraray Co., Ltd., Kurashiki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 4/500 ;
U.S. Cl.
CPC ...
C07C 4/500 ;
Abstract
The present invention provides a process for producing canthaxanthin by mixing &bgr;-carotene with an alkali metal chlorate or an alkali metal bromate in water and an organic solvent immiscible with water; adding an iodine halide or iodide; and adding a metal iodide whereby the &bgr;-carotene is oxidized to yield canthaxanthin.