Patents by Inventor Pramil Kumar Mathur

Pramil Kumar Mathur 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).

  • Process for preparation of atovaquone and novel intermediates thereof
    Patent number: 7847127
    Abstract: Disclosed herein is a novel process for preparation of atovaquone. The process includes reacting 1,4-naphthoquinone with trans-4-(4-chlorophenyl) cyclohexane carboxylic acid followed by halogenation to obtain a dihalo-compound. Further, dehydrohalogenation of the dihalo-compound produces a monohalogeno-compound which under goes hydrolysis to produce atovaquone. The invention also discloses atovaquone in a substantially pure and well defined polymorphic form designated as “Form IPCA-ATO,” and the preparation thereof.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: December 7, 2010
    Assignee: IPCA Laboratories Limited
    Inventors: Ashok Kumar, Suneel Yeshwant Dike, Pramil Kumar Mathur, Nellithanath Thankachen Byju, Brajesh Sharma, Swapnil Shreekant Kore, Vitthal Suryabhan Buchude, Dharmendra Singh