Patents by Inventor Tippasandra Chandrashekar

Tippasandra Chandrashekar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Processes for the Preparation of Zolpidem and its Hemitartrate
    Publication number: 20080262025
    Abstract: The invention relates to the preparation of a non-hygroscopic polymorphic form of zolpidem hemitartrate, designated as Form I, and pharmaceutical compositions including it. The invention also relates to use of the compositions for treating anxiety, sleep disorders and convulsions. The invention also relates to a process for the preparation of zolpidem or pharmaceutically acceptable salts thereof by condensing 3-bromo-N,N-dimethyl-4-oxo-4-p-tolyl-butyramide with 2-amino-5-methylpyridine in a polar aprotic solvent.
    Type: Application
    Filed: July 15, 2005
    Publication date: October 23, 2008
    Inventors: Yatendra Kumar, Prasad Mohan, Asok Nath, Tippasandra Chandrashekar, Rita Santhakumar, Somenath Ganguly