Patents by Inventor Samir Shanteshwar Shabade

Samir Shanteshwar Shabade 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 pure and stable crystalline Raltegravir potassium form 3
    Patent number: 10752618
    Abstract: The present invention provides improved, commercially viable and consistently reproducible processes for the preparation of pure and stable crystalline Raltegravir potassium Form 3 and pharmaceutical composition thereof.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: August 25, 2020
    Assignee: LUPIN LIMITED
    Inventors: Purna Chandra Ray, Samir Shanteshwar Shabade, Surinder Kumar Arora, D. Rajput Lalitkumar, B. Shivdavkar Radhakrishna, G. Varade Shantanu, D. Ausekar Govind, Girij Pal Singh, Shreyas Pandurang Deshmukh, Gaurav Amrut Patil
  • PROCESS FOR THE PREPARATION OF PURE AND STABLE CRYSTALLINE RALTEGRAVIR POTASSIUM FORM 3
    Publication number: 20190248773
    Abstract: The present invention provides improved, commercially viable and consistently reproducible processes for the preparation of pure and stable crystalline Raltegravir potassium Form 3 and pharmaceutical composition thereof.
    Type: Application
    Filed: September 13, 2017
    Publication date: August 15, 2019
    Inventors: Purna Chandra Ray, Samir Shanteshwar Shabade, Surinder Kumar Arora, D. Rajput Lalitkumar, B. Shivdavkar Radhakrishna, G. Varade Shantanu, D. Ausekar Govind, Girij Pal Singh, Shreyas Pandurang Deshmukh, Gaurav Amrut Patil
  • Process for preparation of substantially pure fosamprenavir calcium and its intermediates
    Patent number: 9127029
    Abstract: The present invention relates to fosamprenavir calcium (Ia) substantially free of isomer impurity, (3R) tetrahydro-3-furanyl(1S,2R)-3-[[(4-aminophenyl)sulfonyl](isobutyl)amino]-1-benzyl-2-(phosphonooxy)propyl carbamate (Ib), and its process for preparation thereof. The present invention also provides fosamprenavir calcium intermediate, (S)-3-tetrahydrofuranyl-N-succinimidyl carbonate (IIa) substantially free of (R)-3-tetrahydrofuranylsuccinimidyl carbonate (IIb) and its process for preparation thereof.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: September 8, 2015
    Assignee: LUPIN LIMITED
    Inventors: Surinder Kumar Arora, Samir Shanteshwar Shabade, Gaurav Kumar, Purna Chandra Ray, Girij Pal Singh
  • Process for preparation of substantially pure fosamprenavir calcium and its intermediates
    Patent number: 8877947
    Abstract: The present invention relates to fosamprenavir calcium (Ia) substantially free of isomer impurity, (3R)tetrahydro-3-furanyl(1S,2R)-3-[[(4-aminophenyl)sulfonyl](isobutyl)amino]-1-benzyl-2-(phosphonooxy)propyl carbamate (Ib), and its process for preparation thereof. The present invention also provides fosamprenavir calcium intermediate, (S)-3-tetrahydrofuranyl-N-succinimidyl carbonate (IIa) substantially free of (R)-3-tetrahydrofuranylsuccinimidyl carbonate (IIb) and its process for preparation thereof.
    Type: Grant
    Filed: September 5, 2011
    Date of Patent: November 4, 2014
    Assignee: Lupin Limited
    Inventors: Surinder Kumar Arora, Samir Shanteshwar Shabade, Gaurav Kumar, Purna Chandra Ray, Girij Pal Singh
  • PROCESS FOR PREPARATION OF SUBSTANTIALLY PURE FOSAMPRENAVIR CALCIUM AND ITS INTERMEDIATES
    Publication number: 20140256959
    Abstract: The present invention relates to fosamprenavir calcium (Ia) substantially free of isomer impurity, (3R) tetrahydro-3-furanyl(1S,2R)-3-[[(4-aminophenyl)sulfonyl](isobutyl)amino]-1-benzyl-2-(phosphonooxy)propyl carbamate (Ib), and its process for preparation thereof. The present invention also provides fosamprenavir calcium intermediate, (S)-3-tetrahydrofuranyl-N-succinimidyl carbonate (IIa) substantially free of (R)-3-tetrahydrofuranylsuccinimidyl carbonate (IIb) and its process for preparation thereof.
    Type: Application
    Filed: May 23, 2014
    Publication date: September 11, 2014
    Applicant: LUPIN LIMITED
    Inventors: Surinder Kumar Arora, Samir Shanteshwar Shabade, Gaurav Kumar, Purna Chandra Ray, Girij Pal Singh
  • PROCESS FOR PREPARATION OF SUBSTANTIALLY PURE FOSAMPRENAVIR CALCIUM AND ITS INTERMEDIATES
    Publication number: 20130174651
    Abstract: The present invention relates to fosamprenavir calcium (Ia) substantially free of isomer impurity, (3R) tetrahydro -3 -furanyl(1S,2R)-3-[[(4-aminophenyl)sulfonyl](isobutyl)amino]-1-benzyl-2-(phosphonooxy)propyl carbamate (Ib), and its process for preparation thereof. The present invention also provides fosamprenavir calcium intermediate, (S)-3-tetrahydrofuranyl-N-succinimidyl carbonate (IIa) substantially free of (R)-3-tetrahydrofuranylsuccinimidyl carbonate (IIb) and its process for preparation thereof.
    Type: Application
    Filed: September 5, 2011
    Publication date: July 11, 2013
    Applicant: LUPIN LIMITED
    Inventors: Surinder Kumar Arora, Samir Shanteshwar Shabade, Gaurav Kumar, Purna Chandra Ray, Girij Pal Singh