Patents by Inventor Boddu Ananda Rao

Boddu Ananda 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).

  • Single pot process for the preparation of diazonaphthoquinonesulfonyl ester
    Patent number: 7355021
    Abstract: The present invention provides a single pot process for the preparation of diazonaphthoquinonesulfonyl ester, a useful organic material for micro electronic and dye industry. This study pertains to the one pot preparation of diazonaphthoquinonesulfonyl esters using the corresponding diazonaphthoquinine sulfonic acid or its sodium salt, diphosgene or triphosgene, variety of hydroxy compounds and tertiary organic base in an organic solvent medium.
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: April 8, 2008
    Assignee: Council of Scientific & Industrial Research
    Inventors: Vummadi Venkat Reddy, Boddu Ananda Rao, Maruthi Janaki Ram Reddy, Chiguru Srinivas, Chilukuri Ramesh, Vaidya Jayathirtha Rao