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:
Apr. 08, 2014
Filed:
May. 10, 2005
Applicants:
Rajendra Narayanrao Kankan, Mumbai, IN;
Dharmaraj Ramachandra Rao, Mumbai, IN;
Srinivas Laxminarayan Pathi, Bangalore, IN;
Ravikumar Puppala, Bangalore, IN;
Inventors:
Rajendra Narayanrao Kankan, Mumbai, IN;
Dharmaraj Ramachandra Rao, Mumbai, IN;
Srinivas Laxminarayan Pathi, Bangalore, IN;
Ravikumar Puppala, Bangalore, IN;
Assignee:
Cipla Limited, Mumbai, IN;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D 235/20 (2006.01); C07D 235/06 (2006.01); C07D 403/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
An improved process for the preparation of telmisartan, or a pharmaceutically acceptable salt thereof, comprises subjecting 1H-Benzimidazole-2-n-propyl-4-methyl-6-(1'-methyl benzimidazole-2′yl)] of formula (II), and methyl-4-(bromomethyl)biphenyl-2-carboxylate of formula (III) to condensation and hydrolysis in a single step: