Patents by Inventor Pandurang Balwant Desphande

Pandurang Balwant Desphande 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).

  • Amorphous hydrate of a cephalosporin antibiotic
    Patent number: 7244842
    Abstract: A process for the preparation of cefdinir of the formula (I) the said process comprising the steps of: i) condensing 7-amino-3-cephem-4-carboxylic acid of the formula (XII) wherein R1 is as defined above with compound of the formula (XIII) in the presence of a tertiary amine and an organic solvent, followed by treatment with a base to produce a salt of compound formula (XIV), wherein M+ is a counter ion and ii) hydrolyzing the compound of the formula (XIV) using an acid in the presence of a solvent to produce cefdinir of formula (I).
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: July 17, 2007
    Assignee: Orchid Chemicals & Pharmaceuticals Ltd.
    Inventors: Pandurang Balwant Desphande, Bhausaheb Pandharinath Khadangale, Chandrasekaran Ramasubbu