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:
Jan. 25, 2005
Filed:
Nov. 20, 2003
Rohini R. Joshi, Maharashtra, IN;
Ramesh A. Joshi, Maharashtra, IN;
Nilesh B. Karade, Maharashtra, IN;
Mukund K. Gurjar, Maharashtra, IN;
Rohini R. Joshi, Maharashtra, IN;
Ramesh A. Joshi, Maharashtra, IN;
Nilesh B. Karade, Maharashtra, IN;
Mukund K. Gurjar, Maharashtra, IN;
Council of Scientific and Industrial Research, New Delhi, IN;
Abstract
A process for the preparation of pharmaceutically acceptable salts of chiral Amlodipine namely S(−) Amlodipine and R(+) Amlodipine from without isolation of a free base from with optical purity rank between 96-99% is described in the present invention. The process comprises resolving RS amlodipine base using of L(+) or D(−) tartaric acid to obtain salt of corresponding to the acid used in ee rang from 96-99%.