Patents by Inventor Divvela Venkata Naga Srinvasa Rao

Divvela Venkata Naga Srinvasa Rao 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 the preparation of pure Finasteride
    Patent number: 7164022
    Abstract: The present invention relates to an improved process for the preparation of pure Finasteride of Formula I, which comprises converting dihydrofinasteride to finasteride through novel protected dihydrofinasteride and protected finasteride intermediates.
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: January 16, 2007
    Assignee: Aurobindo Pharma Ltd.
    Inventors: Ramesh Dandala, Divvela Venkata Naga Srinvasa Rao, Koilpillai Joseph Prabahar, Gollapalli Venkateswara Rao, Meenakshisunderam Sivakumaran