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:
Jun. 01, 1999
Filed:
Dec. 10, 1997
Applicant:
Inventors:
Hitoshi Matsuda, Fukuoka, JP;
Toshiharu Shibata, Fukuoka, JP;
Hidekichi Hashimoto, Fukuoka, JP;
Mitsumasa Kitai, Fukuoka, JP;
Assignee:
Mitsubishi Chemical Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
558441 ; 558342 ;
Abstract
Crude (R)-4-cyano-3-hydroxybutyric acid lower alkyl ester, obtained by subjecting an (S)-4-halogeno-3-hydroxybutyric acid lower alkyl ester to a cyano-introducing reaction, is purified by distillation carried out in the presence of a solvent having a boiling point within the range of 50.degree. C. to 160.degree. C. at 10 Torr.
Matsuda, Hitoshi. (1999). Method for producing (r)-4-cyano-3-hydroxybutyric acid lower alkyl ester (U.S. Patent No. 5908953). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5908953
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile