Patents by Inventor Surulichamy Senthil Kumar

Surulichamy Senthil Kumar 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).

  • Synthesis of ceftiofur intermediate
    Patent number: 6803461
    Abstract: The present invention relates to a process for preparation of 7-amino-3-[2-(furylcarbonyl)thiomethyl]-3-cephem-4-carboxylic acid (I) by the condensation of 7-aminocephalosporanic acid (II) with furyl-2-carbonylthiol (III) in the presence of borontrifluoride or its complex, in an organic solvent or mixture of solvents at 0-50° C.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: October 12, 2004
    Assignee: Orchid Chemicals and Pharmaceuticals Limited
    Inventors: Pramod Narayan Deshpande, Bhausaheb Pandharinath Khadangale, Surulichamy Senthil Kumar, Gautam Kumar Das
  • Synthesis of ceftiofur intermediate
    Publication number: 20030135041
    Abstract: The present invention provides an improved process for the preparation of 7-amino-3-[2-(furylcarbonyl)thiomethyl]-3-cephem-4-carboxylic acid represented by formula (I) 1
    Type: Application
    Filed: January 4, 2002
    Publication date: July 17, 2003
    Applicant: ORCHID CHEMICALS & PHARMACEUTICALS LIMITED, INDIA
    Inventors: Pramod Narayan Deshpande, Bhausaheb Pandharinath Khadangale, Surulichamy Senthil Kumar, Gautam Kumar Das
  • Synthesis of ceftiofur intermediate
    Publication number: 20030130502
    Abstract: The present invention relates to a process for preparation of 7-amino-3-[2-(furylcarbonyl)thiomethyl]-3-cephem-4-carboxylic acid (I) by the condensation of 7-aminocephalosporanic acid (II) with furyl-2-carbonylthiol (III) in the presence of borontrifluoride or its complex, in an organic solvent or mixture of solvents at 0-50° C.
    Type: Application
    Filed: August 1, 2002
    Publication date: July 10, 2003
    Applicant: Orchid Chemicals and Pharmaceuticals Limited
    Inventors: Pramod Narayan Deshpande, Bhausaheb Pandharinath Khadangale, Surulichamy Senthil Kumar, Gautam Kumar Das