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:
Feb. 06, 1990
Filed:
Jul. 15, 1988
Applicant:
Inventors:
Gohfu Suzukamo, Osaka, JP;
Yoji Sakito, Montreal, CA;
Masami Fukao, Shiga, JP;
Koji Hagiya, Osaka, JP;
Assignee:
Sumitomo Chemical Company, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
20415787 ; 20415788 ; 20415789 ;
Abstract
Optically active chrysanthemic acid or its derivatives of the formula ##STR1## (wherein X represents a hydroxyl group, a halogen atom, a C.sub.1-20 alkoxy group or a 2,2-dimethyl-3-isobutenyl-cyclopropane carboxyl group and * mark shows asymmetric carbon atom) is racemized by allowing it to react with a bromine compound or a SH compound, in the presence of light.