Patents by Inventor Podichetty Anil Kumar

Podichetty Anil 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).

  • Process for preparation of donepezil
    Patent number: 7148354
    Abstract: An efficient process for preparation of donepezil is provided. In one embodiment, the process for preparation of donepezil includes suspending a catalyst, which is palladium metal on carbon and the compound of the structure in an alcoholic solvent and hydrogenating the suspension at the hydrogen pressure of from about 1 to about 5 and a temperature of from about 40 to about 90° C. till the hydrogenation reaction is substantially complete to obtain a compound of the formula (VI): which then converted to donepezil. The processes of the invention are believed to be simple, eco-friendly, and commercially viable.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: December 12, 2006
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Manne Satyanarayana Reddy, Sajja Eswaraiah, Mathad Vijayavitthal Thippannachar, Elati Ravi Rama Chandrashekar, Podichetty Anil Kumar, Kolla Naveen Kumar
  • Novel crystalline form-VI of donepezil hydrochloride and process for the preparation thereof
    Publication number: 20040229914
    Abstract: The invention relates to novel crystalline form VI of Donepezil hydrochloride and process for preparing the crystalline form VI, which is a simple, non-hazardous and commercially viable process.
    Type: Application
    Filed: April 2, 2004
    Publication date: November 18, 2004
    Applicants: DR. REDDY'S LABORATORIES LIMITED, DR. REDDY'S LABORATORIES, INC.
    Inventors: Manne Satyanarayana Reddy, Sajja Eswaraiah, Mathad Vijayavitthal Thippannachar, Elati Ravirama Chandrashekar, Podichetty Anil Kumar
  • Process for preparation of donepezil
    Publication number: 20040143121
    Abstract: An efficient process for preparation of donepezil is provided.
    Type: Application
    Filed: July 24, 2003
    Publication date: July 22, 2004
    Applicants: DR. REDDY'S LABORATORIES LIMITED, DR. REDDY'S LABORATORIES, INC.
    Inventors: Manne Satyanarayana Reddy, Sajja Eswaraiah, Mathad Vijayavitthal Thippannachar, Elati Ravi Rama Chandrashekar, Podichetty Anil Kumar, Kolla Naveen Kumar