Patents by Inventor Thangarasu Ponnusamy

Thangarasu Ponnusamy 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).

  • Crystalline linagliptin intermediate and process for preparation of linagliptin
    Patent number: 11040974
    Abstract: The present invention provides novel crystalline forms B1 & B2 of linagliptin intermediate of structural formula V and methods for production of novel crystalline form of linagliptin intermediate represented by the following structural formula V.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: June 22, 2021
    Assignee: BIOCON LIMITED
    Inventors: Venkata Raghavendracharyulu Palle, Shanmughasamy Rajmahendra, Dharshan Jakkali Chandregowda, Thangarasu Ponnusamy
  • CRYSTALLINE LINAGLIPTIN INTERMEDIATE AND PROCESS FOR PREPARATION OF LINAGLIPTIN
    Publication number: 20200354363
    Abstract: The present invention provides novel crystalline forms B1 & B2 of linagliptin intermediate of structural formula V and methods for production of novel crystalline form of linagliptin intermediate represented by the following structural formula V.
    Type: Application
    Filed: March 27, 2020
    Publication date: November 12, 2020
    Inventors: Venkata Raghavendracharyulu PALLE, Shanmughasamy RAJMAHENDRA, Dharshan Jakkali CHANDREGOWDA, Thangarasu PONNUSAMY
  • PROCESS FOR PREPARATION OF ROSUVASTATIN ACETONIDE CALCIUM
    Publication number: 20110245285
    Abstract: The present invention is in relation to a process for preparation of HMG-CoA reductase inhibitor. More particularly, the present invention provides a process for preparation of (3R,5S,6E) 6-{2-[4-(4-Fluoro-phenyl)-6-isopropyl-2-(methanesulfonyl-methyl-amino)-pyrimidin-5-yl]-vinyl}-2,2-dimethyl-[1,3]dioxan-4-yl)-acetic acid, calcium salt (Rosuvastatin acetonide calcium) which is used for treating hypercholesterolemia.
    Type: Application
    Filed: October 22, 2008
    Publication date: October 6, 2011
    Applicant: BIOCON LIMITED
    Inventors: Pullela Venkata Srinivas, Sreenivasa Prasad Anegondi, Shanmughasamy Rajmahendra, Thangarasu Ponnusamy