Patents by Inventor Samjuddin Md

Samjuddin Md 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).

  • Methods for the preparation of Entacapone
    Publication number: 20070060767
    Abstract: The invention disclosed in this application relates to an improved process for the preparation of Entacapone. In one embodiment the process involves: (i) reacting a 3-alkoxy-4-hydroxy-5-nitrobenzadehyde with N,N-diethylaminocyanoacetamide in the presence of a mild acid catalyst and a solvent, to provide a 3-O-alkylated Entacapone, and treating the 3-O-alkylated Entacapone with an acid catalyst in the presence of an organic base to provide Entacapone.
    Type: Application
    Filed: June 29, 2006
    Publication date: March 15, 2007
    Inventors: Jasti Venkateswarlu, Arava Reddy, Chinnapillai Rajendiran, Samjuddin Md