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. 10, 2013
Filed:
May. 06, 2009
Nageswara Rao Karusala, Hyderabad, IN;
Uma Sankara Sastry Tummalapally, Hyderabad, IN;
Appi Reddy Talatala, Hyderabad, IN;
Debashish Datta, Hyderabad, IN;
Nageswara Rao Karusala, Hyderabad, IN;
Uma Sankara Sastry Tummalapally, Hyderabad, IN;
Appi Reddy Talatala, Hyderabad, IN;
Debashish Datta, Hyderabad, IN;
Mylan Laboratories Limited, , IN;
Abstract
The present invention relates to an improved process for the preparation of 10-oxo-10,11-dihydro-5H-dibenz[b,f]azepine-5-carboxamide (Oxcarbazepine) by reacting 10-methoxy-5H-dibenz[b,f]azepine (10-methoxyiminostilbene) and alkali metal cyanate in presence of α-hydroxy acids, and also relates to the process for the preparation of carbamazepine from iminostilbene. Further the present invention is directed to the novel crystalline form of 10-methoxy carbamazepine.