Patents by Inventor Ranga Reddy Vangala

Ranga Reddy Vangala 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).

  • Processes for the preparation of sitagliptin and pharmaceutically acceptable salts thereof
    Patent number: 8969558
    Abstract: There is provided a process for preparation of sitagliptin of Formula II or a pharmaceutically acceptable salt thereof by deprotection of Formula IX.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: March 3, 2015
    Assignee: Dr. Reddy's Laboratories Limited
    Inventors: Pratap Reddy Padi, Babu Ireni, Srinivas Polavarapu, Shailaja Padamata, Kavitha Nerella, Vijaya Anand Ramasamy, Ranga Reddy Vangala
  • PROCESSES FOR THE PREPARATION OF SITAGLIPTIN AND PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF
    Publication number: 20140128607
    Abstract: There is provided salts and polymorphs of sitagliptin, processes for the preparation thereof, and pharmaceutical compositions comprising the same.
    Type: Application
    Filed: December 5, 2013
    Publication date: May 8, 2014
    Applicants: Dr. Reddy's Laboratories, Inc., Dr. Reddy's Laboratories Limited
    Inventors: Pratap Reddy Padi, Babu Ireni, Srinivas Polavarapu, Shailaja Padamata, Kavitha Nerella, Vijaya Anand Ramasamy, Ranga Reddy Vangala
  • Processes for the preparation of sitagliptin and pharmaceutically acceptable salts thereof
    Patent number: 8309724
    Abstract: There is provided an improved process for the preparation of Sitagliptin of Formula II by reduction of compound of Formula VIII to Formula IX followed by deprotection of Formula IX to afford Sitagliptin of Formula II.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: November 13, 2012
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Incorporated
    Inventors: Pratap Reddy Padi, Babu Ireni, Srinivas Polavarapu, Shailaja Padamata, Kavitha Nerella, Vijaya Anand Ramasamy, Ranga Reddy Vangala
  • PROCESSES FOR THE PREPARATION OF SITAGLIPTIN AND PHARMACEUTICLLY ACCEPTABLE SALTS THEREOF
    Publication number: 20100274017
    Abstract: There is provided salts and polymorphs of sitagliptin, processes for the preparation thereof, and pharmaceutical compositions comprising the same.
    Type: Application
    Filed: December 18, 2008
    Publication date: October 28, 2010
    Applicants: DR. REDDY'S LABORATORIES LTD., DR. REDDY'S LABORATORIES, INC.
    Inventors: Pratap Reddy Padi, Babu Ireni, Srinivas Polavarapu, Shailaja Padamata, Kavitha Nerella, Vijaya Anand Ramasamy, Ranga Reddy Vangala