Patents by Inventor Bishwajit Nag

Bishwajit Nag 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).

  • Publication number: 20030181494
    Abstract: Novel diphenylethylene compounds and derivatives thereof containing thiazolidinedione or oxazolidinedione moieties are provided which are effective in lowering blood glucose level, serum insulin, triglyceride and free fatty acid levels in animal models of Type II diabetes. The compounds are disclosed as useful for a variety of treatments including the treatment of inflammation, inflammatory and immunological diseases, insulin resistance, hyperlipidemia, coronary artery disease, cancer and multiple sclerosis.
    Type: Application
    Filed: October 8, 2002
    Publication date: September 25, 2003
    Inventors: Partha Neogi, Debendranath Dey, Satyanarayana Medicherla, Bishwajit Nag, Arthur Lee
  • Patent number: 6624197
    Abstract: Novel diphenylethylene and styrenes are provided which are administered orally to decrease blood glucose levels in rats. The glucose tolerance in insulin resistant rats is also shown, as well as lowering of triglyceride levels in serum insulin resistant, hyperinsulinemic and hypertriglycedemic rats. The compounds are orally effective anti-diabetic agents that potentially may reduce abnormality of glucose and lipid metabolism in diabetes.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: September 23, 2003
    Assignee: Calyx Therapeutics, Inc.
    Inventors: Bishwajit Nag, Satyanarayana Medicherla, Debendranath Dey
  • Publication number: 20030118594
    Abstract: The present invention provides stable pharmaceutical compositions comprising MHC-peptide complexes and an alkylglycoside detergent. The compositions are useful for inhibiting T-cell mediated immune response associated with various disease, such as autoimmunity, and allergies.
    Type: Application
    Filed: June 7, 1995
    Publication date: June 26, 2003
    Inventors: BISHWAJIT NAG, JEFFREY L. WINKELHAKE
  • Patent number: 6555702
    Abstract: A compound of the formula I: wherein A and C are independently H, alkyl of 1-6 carbon atoms, hydroxy, or alkoxy of 1-6 carbon atoms; B is hydroxy, alkoxy of 1-6 carbon atoms —CO2Z, —O(CH2)mCO2Z, —SO3Z, —OPO3Z2; and Y is cyano,   —C(NR1R2)═C(CN)2; wherein X═O or S, and R1 and R2 are independently H, benzyl, —CH(CH3)C6H6, —(CH2)n C6H6, phenyl; —CO2R; n=2-4; R is lower alkyl of 1-6 carbon atoms; m=1-4 and Z is H, a cation or lower alkyl of 1-6 cabon atoms; is used for treating inflammation, immunological diseases or diabetes.
    Type: Grant
    Filed: April 3, 1998
    Date of Patent: April 29, 2003
    Assignee: Calyx Therapeutics, Inc.
    Inventors: Subramaniam Sriram, John Bright, Bishwajit Nag, Somesh D. Sharma
  • Patent number: 6525093
    Abstract: Compounds are provided that lower blood glucose concentrations, lower serum triglyceride concentrations, lower systolic blood pressure, and increase glucose uptake by adipose tissue, but do not affect the expression of PPAR-&ggr; by adipose tissue.
    Type: Grant
    Filed: November 8, 1999
    Date of Patent: February 25, 2003
    Assignee: Calyx Therapeutics Inc.
    Inventors: Partha Neogi, Bishwajit Nag, Frederick J. Lakner, Debendranath Dey, Satyanarayana Medicherla
  • Publication number: 20020193310
    Abstract: A water soluble extract of M.charantia named MC6, methods for its preparation and methods for its use in the treatment of hyperglycemic disorders are provided. The active MC6 is characterized by moving as a single band on SDS-PAGE having a molecular weight of less than 10 kDal, and by comprising three peptides. Also provided is a peptide component of MC6 named MC6.1, as well as analogues and mimetics thereof. The active MC6, MC 6.1, MC6.2, and MC6.3 exhibit hypoglycemic activity, even following oral administration. Also provided are methods of using the active agents to treat hyperglycemic disorders, particularly diabetes, where the active agents are preferably orally administered.
    Type: Application
    Filed: March 21, 2002
    Publication date: December 19, 2002
    Inventors: Bishwajit Nag, Satyanarayana Medicherla, Somesh D. Sharma
  • Patent number: 6448450
    Abstract: A diphenylethylene Pterocarpus marsupium is provided which is administered orally to decrease blood glucose levels in rats. The compound is an effective anti-diabetic agent that can reduce abnormality of glucose metabolism in diabetes.
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: September 10, 2002
    Assignee: Calyx Therapeutics, Inc.
    Inventors: Bishwajit Nag, Satyanarayana Medicherla, Jai P. Chansouria, Anil B. Ray
  • Publication number: 20020115714
    Abstract: A compound of the formula I: 1
    Type: Application
    Filed: April 3, 1998
    Publication date: August 22, 2002
    Inventors: SUBRAMANIAM SRIRAM, JOHN BRIGHT, BISHWAJIT NAG, SOMESH D. SHARMA
  • Publication number: 20020107285
    Abstract: Compounds are provided that lower blood glucose concentrations, lower serum triglyceride concentrations, lower systolic blood pressure, and increase glucose uptake by adipose tissue, but do not affect the expression of PPAR-&ggr; by adipose tissue.
    Type: Application
    Filed: February 15, 2002
    Publication date: August 8, 2002
    Applicant: Calyx Therapeutics, Inc.
    Inventors: Partha Neogi, Bishwajit Nag, Frederick J. Lakner, Debendranath Dev, Satyanarayana Medicherla
  • Patent number: 6413504
    Abstract: Compounds of the structure wherein R and R′ are H, alkyl or aryl and each Z, X, Y and X′ is H, acylamino, acyloxy, alkanoyl, alkoxycarbonyl, amino, alkyl, alkoxy, hydroxy, alkylamino, dialkylamino, arylamino, alkylaryl, diarylamino, halo, carboxyl or cyano; and Z can also be are effective UV blockers.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: July 2, 2002
    Assignee: Calyx Therapeutics, Inc.
    Inventors: Frederick J. Lakner, Bishwajit Nag, Partha Neogi
  • Publication number: 20020077333
    Abstract: Substituted isoquinolines, isochromanones and isothiochromanones that inhibit the pro-inflammatory cytokines tumor necrosis factor-alpha (TNF-alpha) and/or interleukin-6 (IL-6) and/or the enzyme cyclooxygenase-2 (COX-2) and/or interleukin-10 (IL-10). Compositions containing such compounds and methods of using such compounds for treatment and/or prevention of inflammation, inflammatory diseases, immunologic diseases and other diseases mediated by TNF-alpha, IL-6, COX-2 and/or IL-10 are also disclosed.
    Type: Application
    Filed: October 10, 2001
    Publication date: June 20, 2002
    Inventors: Debendranath Dey, Partha Neogi, Ananda Sen, Somesh D. Sharma, Bishwajit Nag
  • Patent number: 6391854
    Abstract: A water soluble extract of M.charantia named MC6, methods for its preparation and methods for its use in the treatment of hyperglycemic disorders are provided. The active MC6 is characterized by moving as a single band on SDS-PAGE having a molecular weight of less than 10 kDal, and by comprising tree peptides. Also provided is a peptide component of MC6 named MC6.1, as well as analogues and mimetics thereof. The active MC6, MC6.1, MC6.2, and MC6.3 exhibit hypoglycemic activity, even following oral administration. Also provided are methods of using the active agents to treat hyperglycemic disorders, particularly diabetes, where the active agents are preferably orally administered.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: May 21, 2002
    Assignee: Calyx Therapeutics, Inc.
    Inventors: Bishwajit Nag, Satyanarayana Medicherla, Somesh D. Sharma
  • Publication number: 20020032225
    Abstract: Novel diphenylethylene compounds and derivatives thereof containing thiazolidinedione or oxazolidinedione moieties are provided which are effective in lowering blood glucose level, serum insulin, triglyceride and free fatty acid levels in animal models of Type II diabetes. In contrast to previously reported thiazolidinedione compounds, known to lower leptin levels, the present compounds increase leptin levels and have no known liver toxicity. The compounds are disclosed as useful for a variety of treatments including the treatment of inflammation, inflammatory and immunological diseases, insulin resistance, hyperlipidemia, coronary artery disease, cancer and multiple sclerosis.
    Type: Application
    Filed: April 27, 2001
    Publication date: March 14, 2002
    Inventors: Bishwajit Nag, Debendranath Dey, Satyanarayana Medicherla, Partha Neogi
  • Publication number: 20020025975
    Abstract: Novel diphenylethylene compounds containing thiazolidinedione or oxazolidinedione moieties are provided which are effective in lowering blood glucose level, serum insulin, triglyceride and free fatty acid levels in animal models of Type II diabetes. In contrast to previously reported thiazolidinedione compounds, known to lower leptin levels, the present compounds increase leptin levels and have no known liver toxicity. The compounds are disclosed as useful for a variety of treatments including the treatment of inflammation, inflammatory and immunological diseases, insulin resistance, hyperlipidemia, coronary artery disease, cancer and multiple sclerosis.
    Type: Application
    Filed: February 20, 2001
    Publication date: February 28, 2002
    Inventors: Bishwajit Nag, Debendranath Dey, Satyanarayana Medicherla, Partha Neogi
  • Patent number: 6331633
    Abstract: Novel diphenylethylene compounds containing thiazolidinedione or oxazolidinedione moieties are provided which are effective in lowering blood glucose level, serum insulin, triglyceride and free fatty acid levels in animal models of Type II diabetes. In contrast to previously reported thiazolidine compounds, known to lower leptin levels, the present compound increase leptin levels and have no known liver toxicity.
    Type: Grant
    Filed: April 6, 1999
    Date of Patent: December 18, 2001
    Assignee: Calyx Therapeutics Inc.
    Inventors: Partha Neogi, Bishwajit Nag, Satyanarayana Medicherla, Debendranath Dey
  • Patent number: 6245814
    Abstract: Novel diphenylethylene and styrenes are provided which are administered orally to decrease blood glucose levels in rats. The glucose tolerance in insulin resistant rats is also shown, as well as lowering of triglyceride levels in serum insulin resistant, hyperinsulinemic and hypertriglycedemic rats. The compounds are orally effective anti-diabetic agents that potentially may reduce abnormality of glucose and lipid metabolism in diabetes.
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: June 12, 2001
    Assignee: Calyx Therapeutics, Inc.
    Inventors: Bishwajit Nag, Satyanarayana Medicherla, Debendranath Dey
  • Patent number: 6194453
    Abstract: Disclosed herein are compounds of the formula I wherein A and C are independently H, alkyl of 1-6 carbon atoms, hydroxy, or alkoxy of 1-6 carbon atoms; B is hydroxy or alkoxy of 1-6 carbon atoms; and Y is cyano,  —C(NR1 R2)═C(CN)2; wherein X═O or S, and R1 and R2 are independently  H, benzyl, —CH(CH3)C6H6,  —(CH2)nC6H6, phenyl; —CO2R;  n=2-4; R is lower alkyl of 1-6 carbon atoms which are useful for treating inflammation and immunological diseases.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: February 27, 2001
    Assignee: Calyx Therapeutics, Inc.
    Inventors: Subramaniam Sriram, John Bright, Bishwajit Nag, Somesh D. Sharma
  • Patent number: 6127338
    Abstract: A water soluble extract of M.charantia named MC6, methods for its preparation and methods for its use in the treatment of hyperglycemic disorders are provided. The active MC6 is characterized by moving as a single band on SDS-PAGE having a molecular weight of less than 10 kDal, and by comprising three peptides. Also provided is a peptide component of MC6 named MC6.1, as well as analogues and mimetics thereof. The active MC6, MC6.1, MC6.2, and MC6.3 exhibit hypoglycemic activity, even following oral administration. Also provided are methods of using the active agents to treat hyperglycemic disorders, particularly diabetes, where the active agents are preferably orally administered.
    Type: Grant
    Filed: April 1, 1998
    Date of Patent: October 3, 2000
    Assignee: Calyx Therapeutics, Inc.
    Inventors: Bishwajit Nag, Satyanarayana Medicherla, Somesh D. Sharma
  • Patent number: 6090587
    Abstract: The present invention is directed to unglycosylated, prokaryoticauly-expressed MHC polypeptides, methods of producing these polypeptides, and complexes consisting essentially of an isolated MHC component and an antigenic peptide associated with the antigen binding site of the MHC component. These complexes are useful in treating deleterious immune responses, such as autoimmunity.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: July 18, 2000
    Assignee: Corixa Corporation
    Inventors: Eric T. Rhodes, Bishwajit Nag
  • Patent number: 6045796
    Abstract: The present invention provides immunogenic oligopeptides derived from the Major Histocompatibility Complex (MHC) glycoprotein protein sequences for use in compositions and methods for the treatment, prevention and diagnosis of deleterious immune responses, such as autoimmunity and allergies. The peptides are capable of inducing an immune response against glycoproteins encoded MHC alleles associated with the target disease. In preferred embodiments the peptides of the invention are derived from hypervariable region of the .beta. chain of an MHC Class II molecule associated with the deleterious immune response.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 4, 2000
    Assignee: Anergen, Inc.
    Inventors: Subramaniam Sriram, Bishwajit Nag, Somesh D. Sharma