Patents by Inventor Siripragada M. Rao

Siripragada M. 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 bisphosphonic acid
    Patent number: 7361761
    Abstract: The present invention is to relate an improved process using anisole as solvent for the preparation of compound of formula (I) and its pharmaceutically acceptable salts thereof. wherein R represents —NR1R2, or a group n=1, 2, 3, 4 and 5, where R1 and R2 may be same or different and independently represents hydrogen, or C1-6 alkyl.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: April 22, 2008
    Assignee: Orchid Chemicals & Pharmaceuticals Ltd.
    Inventors: Udayampalayam P. Senthilkumar, Thangavel Arulmoli, Venu S. Lakshmipathi, Siripragada M. Rao