Patents by Inventor Chaiti Roy

Chaiti Roy 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).

  • Purification of low isoelectric point isoforms of darbepoietin
    Patent number: 8779110
    Abstract: The invention provides an efficient method of purification of a modified cytokine. The process includes the use of a chromatographic technique for the purification of the desired cytokine. The purified cytokine can be used as a therapeutic composition.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: July 15, 2014
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Chaiti Roy, Darshan Koticha, Vivek Arthanari
  • PURIFICATION OF MODIFIED CYTOKINES
    Publication number: 20110098452
    Abstract: The invention provides an efficient method of purification of a modified cytokine. The process includes the use of a chromatographic technique for the purification of the desired cytokine. The purified cytokine can be used as a therapeutic composition.
    Type: Application
    Filed: June 23, 2009
    Publication date: April 28, 2011
    Applicants: DR. REDDY'S LABORATORIES LTD., DR. REDDY'S LABORATORIES, INC.
    Inventors: Chaiti Roy, Darshan Koticha, A. Vivek
  • Novel clot-specific steptokinase proteins possessing altered plasminogen activation-characteristics and a process for the preparation of said proteins
    Publication number: 20070287660
    Abstract: Clot-specific streptokinase proteins possessing altered plasminogen characteristics, including enhanced fibrin selectivity. The kinetics of plasminogen activation by these proteins are distinct from those of natural streptokinase, in that there is a temporary delay or lag in the initial rate of catalytic conversion of plasminogen to plasmin. Also disclosed are processes for preparing the proteins.
    Type: Application
    Filed: November 29, 2006
    Publication date: December 13, 2007
    Inventors: Girish Sahai, Rajesh Kumar, Chaiti Roy, Kammara Rajagopal, Deepak Nihalani, Vasudha Sundaram, Mahavir Yadav
  • Nucleic acid molecules encoding clot-specific streptokinase fusion proteins possessing altered plasminogen activation characteristics
    Patent number: 7250503
    Abstract: The present invention provides polynucleotides encoding clot-specific streptokinase proteins possessing altered plasminogen characteristics, including enhanced fibrin selectivity. The kinetics of plasminogen activation by these proteins are distinct from those of natural streptokinase, in that there is a temporary delay or lag in the initial rate of catalytic conversion of plasminogen to plasmin. Also disclosed are processes for preparing the proteins.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: July 31, 2007
    Assignee: Council of Scientific and Industrial Research
    Inventors: Girish Sahni, Rajesh Kumar, Chaiti Roy, Kammara Rajagopal, Deepak Nihalani, Vasudha Sundaram, Mahavir Yadav
  • Clot-specific streptokinase proteins possessing altered plasminogen activation characteristics and a process for their preparation
    Patent number: 7163817
    Abstract: The invention disclosed herein provides clot specific streptokinase proteins possessing altered plasminogen characteristics, including enhanced fibrin selectivity. The kinetics of plasminogen activation by these proteins are distinct from those of natural streptokinase, in that there is a temporary delay or lag in the initial rate of catalytic conversion of plasminogen to plasmin. Also disclosed are processes for preparing the proteins.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: January 16, 2007
    Inventors: Girish Sahni, Rajesh Kumar, Chaiti Roy, Kammara Rajagopal, Deepak Nihalani, Vasudha Sundaram, Mahavir Yadav
  • Novel clot-specific streptokinase proteins possessing altered plasminogen activation characteristics and a process for the preparation of said protein
    Publication number: 20050260598
    Abstract: Clot-specific streptokinase proteins possessing altered plasminogen characteristics, including enhanced fibrin selectivity. The kinetics of plasminogen activation by these proteins are distinct from those of natural streptokinase, in that there is a temporary delay or lag in the initial rate of catalytic conversion of plasminogen to plasmin. Also disclosed are processes for preparing the proteins.
    Type: Application
    Filed: July 31, 2003
    Publication date: November 24, 2005
    Inventors: Girish Sahni, Rajesh Kumar, Chaiti Roy, Kammara Rajagopal, Deepak Nihalani, Vasudha Sundaram, Mahavir Yadav
  • Novel clot-specific steptokinase proteins possessing altered plasminogen activation characteristics and a process for the preparation of said proteins
    Publication number: 20030059921
    Abstract: Clot-specific streptokinase proteins possessing altered plasminogen characteristics, including enhanced fibrin selectivity. The kinetics of plasminogen activation by these proteins are distinct from those of natural streptokinase, in that there is a temporary delay or lag in the initial rate of catalytic conversion of plasminogen to plasmin. Also disclosed are processes for preparing the proteins.
    Type: Application
    Filed: August 27, 2001
    Publication date: March 27, 2003
    Applicant: Council of Scientific and Industrial Research of Rafi Marg, a New Delhi, India corporation
    Inventors: Girish Sahni, Rajesh Kumar, Chaiti Roy, Kammara Rajagopal, Deepak Nihalani, Vasudha Sundaram, Mahavir Yadav