Patents by Inventor Rajest Kumar Thaper

Rajest Kumar Thaper 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 benazepril
    Patent number: 6919450
    Abstract: The present invention relates to an improved process for the preparation of trifluoromethanesulfonic ester of ethyl (R)-2-hydroxy-4-phenylbutyrate, referred to here as triflate in structural Formula I, and to the use of this compound as intermediate for the preparation of ACE (Angiotensin Converting Enzyme) inhibitor, benazepril.
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: July 19, 2005
    Assignee: Ranbaxy Laboratories Limited
    Inventors: Rajest Kumar Thaper, Yatendra Kumar, Shantanu De, S.M. Dileep Kumar
  • Process for the preparation of benazepril
    Publication number: 20040152889
    Abstract: The present invention relates to an improved process for the preparation of trifluoromethanesulfonic ester of ethyl (R)-2-hydroxy-4-phenylbutyrate, referred to here as triflate in structural Formula I, and to the use of this compound as intermediate for the preparation of ACE (Angiotensin Converting Enzyme) inhibitor, benazepril.
    Type: Application
    Filed: March 30, 2004
    Publication date: August 5, 2004
    Inventors: Rajest Kumar Thaper, Yatendra Kumar, Shantanu De, S M Dileep Kumar