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:
Dec. 23, 2014
Filed:
Jul. 15, 2011
Applicants:
Pranab Chatterjee, Nadia, IN;
Asok Nath, Gurgaon, IN;
Sarbjot Singh Sokhi, Amritsar, IN;
Mohan Prasad, Gurgaon, IN;
Inventors:
Pranab Chatterjee, Nadia, IN;
Asok Nath, Gurgaon, IN;
Sarbjot Singh Sokhi, Amritsar, IN;
Mohan Prasad, Gurgaon, IN;
Assignee:
Ranbaxy Laboratories Limited, New Delhi, IN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 277/56 (2006.01);
U.S. Cl.
CPC ...
C07D 277/56 (2013.01);
Abstract
An improved and efficient process for the preparation of 2-[3-cyano-4-(2-methylpropoxy)phenyl]-4-methylthiazole-5-carboxylic acid (febuxostat) that is substantially free from amide by-product is provided.