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:
May. 07, 2013
Filed:
Oct. 26, 2007
Seog Beom Song, Gyeonggi-do, KR;
IL Hwan Cho, Seoul, KR;
Yong Sik Youn, Gyeonggi-do, KR;
Dong Kwon Lim, Gyeonggi-do, KR;
Seog Beom Song, Gyeonggi-do, KR;
Il Hwan Cho, Seoul, KR;
Yong Sik Youn, Gyeonggi-do, KR;
Dong Kwon Lim, Gyeonggi-do, KR;
CJ Cheiljedang Corporation, , KR;
Abstract
Disclosed is a method for the separation of S-(−)-amlodipine from a racemic amlodipine. Featuring the use of inexpensive L-tartaric acid as an optical resolution agent and DMAC as a solvent, the separation method allows the resolution of S-(−)-amlodipine from racemic amlodipine at high yield and to a satisfactory enantiomeric excess and thus is economically favorable and applicable to the mass production of the optical isomer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile