Patents by Inventor Shivaramayya Kalchar

Shivaramayya Kalchar 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).

  • Substituted bicyclic heterocycles, process for their preparation and their use as antiobesity and hypocholesterolemic agents
    Patent number: 7348426
    Abstract: The present invention relates to novel antiobesity and hypocholesterolemic compounds, their derivatives, their analogs, their tautomeric forms, their stereoisomers, their polymorphs, their pharmaceutically acceptable salts, their pharmaceutically acceptable solvates and pharmaceutically acceptable compositions containing them.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: March 25, 2008
    Assignees: Dr. Reddy's Laboraties Limited, Dr. Reddy's Research Foundation
    Inventors: Braj Bhushan Lohray, Vidya Bhushan Lohray, Ashok Channaveerappa Bajji, Shivaramayya Kalchar, Ranga Madhavan Gurram, Ramanujam Rajagopalan, Chakrabarti Ranjan
  • Tricyclic compounds and their use in medicine; process for their preparation and pharmaceutical compositions containing them
    Patent number: 7119198
    Abstract: Novel ?-aryl-?-oxysubstituted alkylcarboxylic acids of the formula (I) and compositions containing them. The compounds have hypolipidemic, antihyperglycemic uses.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: October 10, 2006
    Assignees: Dr. Reddy's Research Foundation, Reddy-Cheminor, Inc.
    Inventors: Braj Bhushan Lohray, Vidya Bhushan Lohray, Ashok Channaveerappa Bajji, Shivaramayya Kalchar, Rajagopalan Ramanujam, Ranjan Chakrabarti
  • Novel tricyclic compounds and their use in medicine; process for their preparation and pharmaceutical compositions containing them
    Publication number: 20060148793
    Abstract: Novel ?-aryl-?-oxysubstituted alkylcarboxylic acids of the formula (I) and compositions containing them. The compounds have hypolipidemic, antihyperglycemic uses.
    Type: Application
    Filed: July 14, 2005
    Publication date: July 6, 2006
    Inventors: Braj Lohray, Vidya Lohray, Ashok Bajji, Shivaramayya Kalchar, Rajagopalan Ramanujam, Ranjan Chakrabarti
  • Tricyclic compounds and their use in medicine process for their preparation and pharmaceutical compositions containing them
    Patent number: 6939988
    Abstract: Novel ?-aryl-?-oxysubstituted alkylcarboxylic acids of the formula (I) and compositions containing them. The compounds have hypolipidemic, antihyperglycemic uses.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: September 6, 2005
    Assignee: Dr. Reddy's Laboratories Limited
    Inventors: Braj Bhushan Lohray, Vidya Bhushan Lohray, Ashok Channaveerappa Bajji, Shivaramayya Kalchar, Rajagopalan Ramanujam, Ranjan Chakrabarti
  • Bicyclic compounds and their use in medicine; process for their preparation and pharmaceutical compositions containing them
    Patent number: 6846824
    Abstract: Compounds of formula (I) its tautomeric forms, its stereoisomers, its polymorphs, its pharmaceutically acceptable salts or its pharmaceutically acceptable solvates can be used to prevent or treat diabetes caused by insulin resistance or impaired glucose tolerance or complications of diabetes caused by insulin resistance or impaired glucose tolerance. The compounds can also be used to reduce cholesterol, body weight, blood glucose, triglycerides and free fatty acids in the blood.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: January 25, 2005
    Assignee: Dr. Reddy's Laboratories Ltd.
    Inventors: Braj Bhushan Lohray, Vidya Bhushan Lohray, Ashok Channaveerappa Bajji, Shivaramayya Kalchar, Rajagopalan Ramanujam, Ranjan Chakrabarti, Javed Iqbal, Ranga Madhavan Gurram
  • Bicyclic compounds and their use in medicine; process for their preparation and pharmaceutical compositions containing them
    Patent number: 6809095
    Abstract: A method for preventing or treating complications of diabetes by administering a compound of formula (I) its tautomeric forms, its stereoisomers, its polymorphs, its pharmaceutically acceptable salts or its pharmaceutically acceptable solvates.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: October 26, 2004
    Assignee: Dr. Reddy's Laboratories Ltd.
    Inventors: Braj Bhushan Lohray, Vidya Bhushan Lohray, Ashok Channaveerappa Bajji, Shivaramayya Kalchar, Rajagopalan Ramanujam, Ranjan Chakrabarti
  • Tricyclic compounds and their use in medicine; process for their preparation and pharmaceutical compositions containing them
    Patent number: 6608194
    Abstract: A compound of Formula (Ih) The compounds may be used, inter alia, for preparing beta aryl-alpha-oxy substituted alkylcarboxylic acids.
    Type: Grant
    Filed: May 10, 2001
    Date of Patent: August 19, 2003
    Assignee: Dr. Reddy's Laboratories Limited
    Inventors: Braj Bhushan Lohray, Vidya Bhushan Lohray, Ashok Channaveerappa Bajji, Shivaramayya Kalchar, Rao Bheema Paraselli, Ranga Madhavan Gurram
  • Tricyclic compounds and their use in medicine process for their preparation and pharmaceutical compositions containing them
    Patent number: 6548666
    Abstract: A compound of Formula (Ig) The compounds may be used, inter alia, for preparing beta aryl-alpha-oxy substituted alkylcarboxylic acids.
    Type: Grant
    Filed: May 10, 2001
    Date of Patent: April 15, 2003
    Assignees: Dr. Reddy's Research Foundation, Reddy-Cheminor, Inc.
    Inventors: Braj Bhushan Lohray, Vidya Bhushan Lohray, Ashok Channaveerappa Bajji, Shivaramayya Kalchar, Rao Bheema Paraselli, Ranga Madhavan Gurram
  • Tricyclic compounds and their use in medicine: process for their preparation and pharmaceutical compositions containing them
    Patent number: 6440961
    Abstract: A compound of formula (1) it derivatives, its analogs, its tautomeric forms, its stereoisomers, its polymorphs, its pharmaceutically acceptable salts, or its pharmaceutically acceptable solvates, processes for its preparation and methods of use thereof.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: August 27, 2002
    Assignees: Dr. Reddy's Research Foundation, Reddy-Cheminor, Inc.
    Inventors: Braj Bhushan Lohray, Vidya Bhushan Lohray, Ashok Channaveerappa Bajji, Shivaramayya Kalchar, Rao Bheema Paraselli, Ranga Madhavan Gurram, Rajagopalan Ramanujam, Ranjan Chakrabarti
  • Novel bicyclic compounds and their use in medicine; process for their preparation and pharmaceutical compositions containing them
    Publication number: 20020082258
    Abstract: A method for preventing or treating complications of diabetes by administering a compound of formula (I) 1
    Type: Application
    Filed: March 29, 2001
    Publication date: June 27, 2002
    Applicant: DR. REDDY'S RESEARCH FOUNDATION & REDDY- CHEMINOR, INC.
    Inventors: Braj Bhushan Lohray, Vidya Bhushan Lohray, Ashok Channaveerappa Bajji, Shivaramayya Kalchar, Rajagopalan Ramanujam, Ranjan Chakrabarti
  • Novel tricyclic compounds and their use in medicine; process for their preparation and pharmaceutical compositions containing them
    Publication number: 20020077320
    Abstract: Novel &bgr;-aryl-&agr;-oxysubstituted alkylcarboxylic acids of the formula (I) and compositions containing them.
    Type: Application
    Filed: December 6, 2001
    Publication date: June 20, 2002
    Applicant: DR. REDDY'S RESEARCH FOUNDATION AND REDDY- CHEMINOR, INC.
    Inventors: Braj Bhushan Lohray, Vidya Bhushan Lohray, Ashok Channaveerappa Bajji, Shivaramayya Kalchar, Rajagopalan Ramanujam, Ranjan Chakrabarti
  • Novel bicyclic compounds and their use in medicine; process for their preparation and pharmaceutical compositions containing them
    Publication number: 20010051619
    Abstract: Compounds of formula (I) 1
    Type: Application
    Filed: March 23, 2001
    Publication date: December 13, 2001
    Applicant: DR. REDDY'S RESEARCH FOUNDATION AND REDDY-CHEMINOR, INC.
    Inventors: Braj Bhushan Lohray, Vidya Bhushan Lohray, Ashok Channaveerappa Bajji, Shivaramayya Kalchar, Rajagopalan Ramanujam, Ranjan Chakrabarti
  • Bicyclic compounds and their use in medicine, process for their preparation and pharmaceutical compositions containing them
    Patent number: 6265401
    Abstract: Compounds of formula (I) its tautomeric forms, its stereoisomers, its polymorphs, its pharmaceutically acceptable salts or its pharmaceutically acceptable solvates can be used to prevent or treat diabetes caused by insulin resistance or impaired glucose tolerance or complications of diabetes caused by insulin resistance or impaired glucose tolerance. The compounds can also be used to reduce cholesterol, body weight, blood glucose, triglycerides and free fatty acids in the blood.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: July 24, 2001
    Assignees: Reddy-Cheminor, Inc., Dr. Reddy's Research Foundation
    Inventors: Braj Bhushan Lohray, Vidya Bhushan Lohray, Ashok Channaveerappa Bajji, Shivaramayya Kalchar, Rajagopalan Ramanujam, Ranjan Chakrabarti
  • Azolidinediones useful for the treatment of diabetes, dyslipidemia and hypertension: process for their preparation and pharmaceutical compositions containing them
    Patent number: 6159966
    Abstract: A compound of formula (I) ##STR1## its tautomeric forms, its stereoisomers, its polymorphs, its pharmaceutically acceptable salts or its pharmaceutically acceptable solvates, wherein R.sup.3, R.sup.4, R.sup.5, and R.sup.6 are the same or different; R.sup.1 and R.sup.2 together represent along with carbon atoms to which they are attached an aromatic cyclic structure containing 5-6 ring atoms which may optionally be substituted; X represents a heteroatom selected from oxygen or sulfur; R.sup.7 represents hydrogen atom, hydroxy, alkoxy, halogen, lower alkyl group or optionally substituted aralkyl group or forms a bond together with R.sup.8 ; R.sup.8 represents hydrogen atom, hydroxy, alkoxy, halogen, lower alkyl group or optionally substituted aralkyl or R.sup.8 forms a bond together with R.sup.
    Type: Grant
    Filed: August 14, 1998
    Date of Patent: December 12, 2000
    Assignees: Reddy-Cheminor Inc., Dr. Reddy's Research Foundation
    Inventors: Braj Bhushan Lohray, Vidya Bhushan Lohray, Ashok Chennaveerappa Bajji, Shivaramayya Kalchar, Sekar Reddy Alla, Rajagopalan Ramanujam, Reeba Kannimel Vikramadithyan
  • Tricyclic compounds and their use in medicine process for their preparation and pharmaceutical compositions containing them
    Patent number: 6054453
    Abstract: Novel .beta.-aryl-.alpha.-oxysubstituted alkylcarboxylic acids of the formula (I) and compositions containing them. ##STR1## The compounds have hypolipidemic, antihyperglycemic uses.
    Type: Grant
    Filed: January 23, 1998
    Date of Patent: April 25, 2000
    Assignees: Redd's Research Foundation, Reddy-Cheminor, Inc.
    Inventors: Braj Bhushan Lohray, Vidya Bhushan Lohray, Ashok Channaveerappa Bajji, Shivaramayya Kalchar, Rajagopalan Ramanujam, Ranjan Chakrabarti
  • Azolidinediones useful for the treatment of diabetes, dyslipidemia and hypertension: process for their preparation and pharmaceutical compositions containing them
    Patent number: 6011031
    Abstract: Novel antidiabetic compounds, their tautomeric forms, their derivatives, their analogues, their stereoisomers, their polymorphs, their pharmaceutically acceptable salts, their pharmaceutically acceptable solvates and pharmaceutically acceptable compositions containing them; methods for preparing the antidiabetic compounds and their uses.
    Type: Grant
    Filed: December 2, 1997
    Date of Patent: January 4, 2000
    Assignees: Dr. Reddy's Research Foundation, Reddy-Cheminor, Inc.
    Inventors: Braj Bhushan Lohray, Vidya Bhushan Lohray, Ashok Chennaveerappa Bajji, Shivaramayya Kalchar, Sekar Reddy Alla, Rajagopalan Ramanujam, Reeba Kannimel Vikramadithyan