Patents by Inventor Thirupathi Reddy Akki

Thirupathi Reddy Akki 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 celecoxib
    Patent number: 7919633
    Abstract: There is provided a process for preparation of celecoxib by reacting 4,4,4-trifluoro-1-[4-(methyl)phenyl]butane-1,3-dione with 4-sulphonamidophenylhydrazine or its salt in a solvent medium that contains an alkyl ester. There is also provided a process for the purification of celecoxib using aromatic hydrocarbon solvents.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: April 5, 2011
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Raghupathi Reddy Anumula, Goverdhan Gilla, Sampath Alla, Thirupathi Reddy Akki, Yakambram Bojja
  • PROCESS FOR PREPARATION OF CELECOXIB
    Publication number: 20080234491
    Abstract: There is provided a process for preparation of celecoxib by reacting 4,4,4-trifluoro-1-[4-(methyl)phenyl]butane-1,3-dione with 4-sulphonamidophenylhydrazine or its salt in a solvent medium that contains an alkyl ester. There is also provided a process for the purification of celecoxib using aromatic hydrocarbon solvents.
    Type: Application
    Filed: March 19, 2008
    Publication date: September 25, 2008
    Inventors: Raghupathi Reddy Anumula, Goverdhan Gilla, Sampath Alla, Thirupathi Reddy Akki, Yakambram Bojja