Patents by Inventor Shiva P. Singh

Shiva P. Singh 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 ANHYDROUS AZITHROMYCIN
    Publication number: 20090018090
    Abstract: The present invention provides a stable form of azithromycin derivatives that act as antibiotics. These compounds are in anhydrous form and have increased stability over the hydrated forms.
    Type: Application
    Filed: July 31, 2008
    Publication date: January 15, 2009
    Inventors: Shiva P. Singh, Siddiqui M. Jaweed Mukarram, Manish Purohit, Anjum R. Khan
  • Process for preparation of anhydrous azithromycin
    Patent number: 7414114
    Abstract: The present invention provides a stable form of azithromycin derivatives that act as antibiotics. These compounds are in anhydrous form and have increased stability over the hydrated forms.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: August 19, 2008
    Assignee: Wockhardt Limited
    Inventors: Shiva P. Singh, Siddiqui M. Jaweed Mukarram, Manish Purohit, Anjum R. Khan
  • Process for preparation of anhydrous azithromycin
    Publication number: 20030139583
    Abstract: The present invention provides a stable form of azithromycin derivatives that act as antibiotics. These compounds are in anhydrous form and have increased stability over the hydrated forms.
    Type: Application
    Filed: February 24, 2003
    Publication date: July 24, 2003
    Applicant: Wockhardt Limited
    Inventors: Shiva P. Singh, Siddiqui M. Jaweed Mukarram, Manish Purohit, Anjum R. Khan
  • Synthetic procedure for 5-methoxy-2-[(4-methoxy-3,5-dimethyl-2-pyridinyl)-methylthio]-IH-benzimidazole hydrochloride and its conversion to omeprazole
    Patent number: 6245913
    Abstract: The present invention relates to an efficient process for the preparation of 5-methoxy-2-[(4-methoxy-3,5-dimethyl-2-pyridinyl)methylthio]-1-H-benzimidazole hydrochloride starting from 3,5-Lutidine and its conversion to Omeprazole (5-methoxy-2-[(4-methoxy-3,5-dimethyl-2-pyridinyl)methylsulfinyl]-1H-benzimidazole) by selective oxidation with hydrogen peroxide.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: June 12, 2001
    Assignee: Wockhardt Europe Limited
    Inventors: Shiva P. Singh, Siddiqui Mohammed Jaweed Mukarram, Dilip Ganesh Kulkami, Manish Purohit