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:
Sep. 12, 2017
Filed:
Jun. 02, 2015
Applicant:
Sun Pharmaceutical Industries Limited, Mumbai, Maharashtra, IN;
Inventors:
Shyam Sunder Verma, Benares, IN;
Shravan Kumar Singh, Mirzapur, IN;
Kaptan Singh, Gurgaon, IN;
Mohan Prasad, Gurgaon, IN;
Assignee:
Sun Pharmaceutical Industries Limited, Mumbai, IN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 227/18 (2006.01); C07D 239/94 (2006.01);
U.S. Cl.
CPC ...
C07C 227/18 (2013.01); C07D 239/94 (2013.01);
Abstract
The present invention provides a process for the preparation of 4-dimethylaminocrotonic acid of Formula (II) or its salts, which is used as an intermediate for the preparation of afatinib or its salts.