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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.:

US 6268525 B1

PDFFull Text
Date of Patent:
Jul. 31, 2001

Filed:

Jan. 27, 1999

Process for producing optically active chrysanthemic acid

Applicant:
Inventors:

Makoto Itagaki, Takatsuki, JP;

Goufu Suzukamo, Suita, JP;

Kazuaki Sasaki, Misawa, JP;

Kunihiko Fujita, Nara, JP;

Assignee:

Sumitomo Chemical Company, Limited, Osaka, JP;

Attorney:

Sughrue, Mion, Zinn, Macpeak & Seas, PLLC

Primary Examiner:

Paul J Killos

Int. Cl.
CPC ...
C07B 5/500 ;
U.S. Cl.
CPC ...
C07B 5/500 ;
Abstract

The present invention provides an advantageous method for producing an optically active chrysanthemic acid. Disclosed is a method for producing an optically active chrysanthemic acid whose trans isomer ratio and optical purity are improved, which comprises reacting chrysanthemic acid having a trans isomer ratio of not less than 50% and an optical purity of not less than 10% e.e. with an optically active organic amine to optically resolve said chrysanthemic acid.

Find Patent Forward Citations

Itagaki, Makoto. (2001). Process for producing optically active chrysanthemic acid (U.S. Patent No. 6268525). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6268525

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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