Patents by Inventor Abir Kumar Pal

Abir Kumar Pal 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 producing (S)-equol
    Patent number: 9051291
    Abstract: The present application relates to an improved process for the preparation of (S)-equol (1). The present application also relates to novel intermediates of formula (7), (7A), (8) and (9) and their use for the synthesis of (S)-equol.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: June 9, 2015
    Assignee: DR. REDDY'S LABORATORIES LIMITED
    Inventors: Vilas Hareshwar Dahanukar, Syam Kumar Unniaran Kunhimon, Upadhya Timmana, Abir Kumar Pal, Mahendar Macha, Venkata Madhubabu Meesala, Krishna Mohan Thalabathula, Shankar Ramanathan
  • PROCESS FOR PRODUCING (S)-EQUOL
    Publication number: 20150057456
    Abstract: The present application relates to an improved process for the preparation of (S)-equol (1). The present application also relates to novel intermediates of formula (7), (7A), (8) and (9) and their use for the synthesis of (5)-equol.
    Type: Application
    Filed: March 27, 2013
    Publication date: February 26, 2015
    Inventors: Vilas Hareshwar Dahanukar, Syam Kumar Unniaran Kunhimon, Upadhya Timmana, Abir Kumar Pal, Mahendar Macha, Venkata Madhubabu Meesala, Krishna Mohan Thalabathula, Shankar Ramanathan
  • Process for the preparation of temsirolimus and its intermediates
    Patent number: 8524893
    Abstract: Novel intermediates, process for their preparation and their use in the preparation of therapeutically effective antineoplastic agents, in particular Temsirolimus of formula (I).
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: September 3, 2013
    Assignee: Fresenius Kabi Oncology Limited
    Inventors: Nitin Gupta, Vishal Handa, Abir Kumar Pal, Hemant Kumar Singh, Saswata Lahiri, Sushil Kumar Dubey
  • PROCESS FOR THE PREPARATION OF A SINGLE ENANTIOMER OF 3-AMINOPIPERIDINE DIHYDROCHLORIDE
    Publication number: 20130172562
    Abstract: A process comprising: (a) reduction of N-acetyl-3-aminopyridine (2): or its salt in the presence of hydrogen and a palladium catalyst deposited on solid support; (b) converting racemic N-acetyl-3-aminopiperidine (3) or its salt produced in step (a) to rac-3-aminopiperidine (rac-4) or its salt; (c) resolution of the racemic 3-aminopiperidine (rac-4) or its salt produced in step (b) with a chiral acid.
    Type: Application
    Filed: June 17, 2011
    Publication date: July 4, 2013
    Applicants: DR. REDDY'S LABORATORIES, INC., DR. REDDY'S LABORATORIES LTD.
    Inventors: Graham Andrew Meek, Syam Kumar Unniaran Purakkal Kunhimon, R Shankar, Vilas Hareshwar Dahanukar, TH. Krishna Mohan, Manoj Balu Wagh, Abir Kumar Pal, V. Madhu Babu Meesala, Sonmit Shrivastava
  • PROCESS FOR THE PREPARATION OF TEMSIROLIMUS AND ITS INTERMEDIATES
    Publication number: 20110184167
    Abstract: Novel intermediates, process for their preparation and their use in the preparation of therapeutically effective antineoplastic agents, in particular Temsirolimus of formula (I).
    Type: Application
    Filed: January 28, 2011
    Publication date: July 28, 2011
    Applicant: Fresenius Kabi Oncology Limited
    Inventors: Nitin Gupta, Vishal Handa, Abir Kumar Pal, Hemant Kumar Singh, Saswata Lahiri, Sushil Kumar Dubey