Patents by Inventor Rajinder Singh

Rajinder Singh 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: 20060247287
    Abstract: The present invention relates to prodrugs and compositions thereof useful for treating or preventing Hepatitis C virus (HCV) infections. In particular, the present invention relates to prodrugs of substituted diphenyl-, diheteroaryl- and mixed phenyl heteroaryl substituted five-membered heterocycle compounds, compositions comprising the compounds and the use of such compounds and compositions to inhibit HCV replication and/or proliferation as a therapeutic approach towards the treatment and/or prevention of HCV infections in humans and animals.
    Type: Application
    Filed: May 2, 2006
    Publication date: November 2, 2006
    Applicant: Rigel Pharmaceuticals, Inc.
    Inventors: Rajinder Singh, Dane Goff, Ihab Darwish, Rao Kolluri, Henry Lu, Gary Park
  • Publication number: 20060234983
    Abstract: The present disclosure provides prodrugs of biologically active 2,4-pyrimidinediamine compounds, compositions comprising the prodrugs, intermediates and methods for synthesizing the prodrugs and methods of using the prodrugs in a variety of applications.
    Type: Application
    Filed: June 14, 2006
    Publication date: October 19, 2006
    Applicant: Rigel Pharmaceuticals, Inc.
    Inventors: Rajinder Singh, Somasekhar Bhamidipati, Esteban Masuda
  • Patent number: 7122542
    Abstract: The present invention provides methods of treating or preventing autoimmune diseases with 2,4-pyrimidinediamine compounds, as well as methods of treating, preventing or ameliorating symptoms associated with such diseases. Specific examples of autoimmune diseases that can be treated or prevented with the compounds include rheumatoid arthritis and/or its associated symptoms, systemic lups erythematosis and/or its associated symptoms and multiple sclerosis and/or its associated symptoms.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: October 17, 2006
    Assignee: Rigel Pharmaceuticals, Inc.
    Inventors: Rajinder Singh, Ankush Argade, Hui Li, Somasekhar Bhamidipati, David Carroll, Catherine Sylvain, Jeffrey Clough, Holger Keim
  • Publication number: 20060229294
    Abstract: The present invention relates to benzisothiazoles and pharmaceutical compositions thereof that inhibit replication and/or proliferation of HCV virus. The present invention also relates to the use of the benzisothiazoles and pharmaceutical compositions comprising the compounds to treat or prevent HCV infections.
    Type: Application
    Filed: February 24, 2006
    Publication date: October 12, 2006
    Applicant: Rigel Pharmaceuticals, Inc.
    Inventors: Hui Hong, Eileen Goldstein, Emily Stauffer, Dane Goff, Rao Kolluri, Ihab Darwish, Rajinder Singh, Henry Lu
  • Patent number: 7115642
    Abstract: The present invention relates to substituted diphenyl heterocycle compounds and pharmaceutical compositions thereof that inhibit replication of HCV virus. The present invention also relates to the use of the compounds and/or compositions to inhibit HCV replication and/or proliferation and to treat or prevent HCV infections.
    Type: Grant
    Filed: May 3, 2004
    Date of Patent: October 3, 2006
    Assignee: Rigel Pharmaceuticals, Inc.
    Inventors: Rajinder Singh, Dane Goff, John J. Partridge
  • Publication number: 20060211657
    Abstract: The present disclosure provides prodrugs of biologically active 2,4-pyrimidinediamine compounds, compositions comprising the prodrugs, intermediates and methods for synthesizing the prodrugs and methods of using the prodrugs in a variety of applications.
    Type: Application
    Filed: January 19, 2006
    Publication date: September 21, 2006
    Applicant: Rigel Pharmaceuticals, Inc.
    Inventors: Rajinder Singh, Somasekhar Bhamidipati, Esteban Masuda
  • Publication number: 20060200649
    Abstract: A method comprising loading a plurality of data bytes from a data cache in response to a load instruction, determining the most significant bit of at least one of the data bytes using a first logic, arranging at least some of the data bytes onto a data bus using a second logic substantially coupled in parallel with the first logic, and performing a sign extension on the data bus using the second logic.
    Type: Application
    Filed: February 17, 2005
    Publication date: September 7, 2006
    Applicant: Texas Instruments Incorporated
    Inventors: Rajinder Singh, Muralidharan Chinnakonda, Bhasi Kaithamana
  • Publication number: 20060167254
    Abstract: The present invention provides methods of treating or preventing autoimmune diseases with spiro 2,4-pyrimidinediamine compounds, as well as methods of treating, preventing or ameliorating symptoms associated with such diseases. Specific examples of autoimmune diseases that can be treated or prevented with the compounds include rheumatoid arthritis and/or its associated symptoms, systemic lupus erythematosis and/or its associated symptoms and multiple sclerosis and/or its associated symptoms.
    Type: Application
    Filed: November 23, 2005
    Publication date: July 27, 2006
    Applicant: Rigel Pharmaceuticals, Inc.
    Inventors: Robin Cooper, Rajinder Singh, Jeffrey Clough
  • Publication number: 20060167249
    Abstract: The present invention provides stereoisomers and stereoisomeric mixtures of 3-aminocarbonyl-bicycloheptene-2,4-pyrimidinediamine compounds having antiproliferative activity, compositions comprising the compounds and methods of using the compounds to inhibit cellular proliferation and to treat proliferate diseases such as tumorigenic cancers.
    Type: Application
    Filed: November 15, 2005
    Publication date: July 27, 2006
    Applicant: Rigel Pharmaceuticals, Inc.
    Inventors: Ankush Argade, Rajinder Singh, Hui Li
  • Publication number: 20060160869
    Abstract: This invention describes compounds and pharmaceutical compositions useful as ubiquitin agent inhibitors, particularly ubiquitin ligase inhibitors. The compounds and pharmaceutical compositions of the invention are useful as inhibitors of the biochemical pathways of organisms in which ubiquitination is involved, such as signal transduction pathways. The invention also comprises the use of the compounds and pharmaceutical compositions of the invention for the treatment of conditions that require inhibition of ubiquitination. Furthermore, the invention comprises methods of inhibiting ubiquitination in a cell comprising contacting a cell in which inhibition of ubiquitination is desired with a compound or pharmaceutical composition according to the invention. Particularly, the compounds and pharmaceutical compositions are useful to inhibit the ubiquitin ligase activity of MDM2.
    Type: Application
    Filed: January 5, 2006
    Publication date: July 20, 2006
    Applicant: Rigel Pharmaceuticals, Inc.
    Inventors: Rajinder Singh, Usha Ramesh, Sarkiz Issakani, Jianing Huang, Taisei Kinoshita, Tarikere Gururaja
  • Publication number: 20060135543
    Abstract: The present invention provides 2,4-pyrimidinediamine compounds that inhibit the IgE and/or IgG receptor signaling cascades that lead to the release of chemical mediators, intermediates and methods of synthesizing the compounds and methods of using the compounds in a variety of contexts, including in the treatment and prevention of diseases characterized by, caused by or associated with the release of chemical mediators via degranulation and other processes effected by activation of the IgE and/or IgG receptor signaling cascades.
    Type: Application
    Filed: December 8, 2005
    Publication date: June 22, 2006
    Inventors: Rajinder Singh, Ankush Argade, Donald Payan, Susan Molineaux, Sacha Holland, Jeffrey Clough, Holger Keim, Somasekhar Bhamidipati, Catherine Sylvain, Hui Li, Alexander Rossi
  • Patent number: 7060827
    Abstract: The present invention provides 2,4-pyrimidinediamine compounds that inhibit the IgE and/or IgG receptor signaling cascades that lead to the release of chemical mediators, intermediates and methods of synthesizing the compounds and methods of using the compounds in a variety of contexts, including in the treatment and prevention of diseases characterized by, caused by or associated with the release of chemical mediators via degranulation and other processes effected by activation of the IgE and/or IgG receptor signaling cascades.
    Type: Grant
    Filed: June 1, 2004
    Date of Patent: June 13, 2006
    Assignee: Rigel Pharmaceuticals, Inc.
    Inventors: Rajinder Singh, Ankush Argade, Donald Payan, Susan Molineaux, Sacha J. Holland, Jeffrey Clough, Holger Keim, Somasekhar Bhamidipati, Catherine Sylvain, Hui Li, Alexander B. Rossi
  • Publication number: 20060058525
    Abstract: The present invention provides an economical and efficient method to prepare various substituted 2,4-pyrimidinediamine compounds in large scale quantities.
    Type: Application
    Filed: August 30, 2005
    Publication date: March 16, 2006
    Inventors: Rajinder Singh, Ankush Argade
  • Publication number: 20060058292
    Abstract: The present invention provides 2,4-pyrimidinediamine compounds that inhibit the IgE and/or IgG receptor signaling cascades that lead to the release of chemical mediators, intermediates and methods of synthesizing the compounds and methods of using the compounds in a variety of contexts, including in the treatment and prevention of diseases characterized by, caused by or associated with the release of chemical mediators via degranulation and other processes effected by activation of the IgE and/or IgG receptor signaling cascades.
    Type: Application
    Filed: June 8, 2005
    Publication date: March 16, 2006
    Inventors: Rajinder Singh, Ankush Argade, Donald Payan, Susan Molineaux, Sacha Holland, Jeffrey Clough, Holger Keim, Somasekhar Bhamidipati, Catherine Sylvain, Hui Li, Alexander Rossi
  • Publication number: 20060047884
    Abstract: A system and method for power efficient memory caching. Some illustrative embodiments may include a system comprising: a hash address generator coupled to an address bus (the hash address generator converts a bus address present on the address bus into a current hashed address); a cache memory coupled to the address bus (the cache memory comprises a tag stored in one of a plurality of tag cache ways and data stored in one of a plurality of data cache ways); and a hash memory coupled to the address bus (the hash memory comprises a saved hashed address, the saved hashed address associated with the data and the tag). Less than all of the plurality of tag cache ways are enabled when the current hashed address matches the saved hashed addresses. An enabled tag cache way comprises the tag.
    Type: Application
    Filed: April 19, 2005
    Publication date: March 2, 2006
    Applicant: Texas Instruments Incorporated
    Inventors: Thang Tran, Muralidharan Chinnakonda, Rajinder Singh
  • Publication number: 20060040955
    Abstract: The present disclosure provides 4-pyrimidineamine compounds having antiproliferative activity, compositions comprising the compounds and methods of using the compounds to inhibit cellular proliferation and to treat proliferative diseases such as tumorigenic cancers.
    Type: Application
    Filed: June 29, 2005
    Publication date: February 23, 2006
    Applicant: Rigel Pharmaceuticals, Inc.
    Inventors: Rajinder Singh, Ankush Argade, David Carroll, Tarikere Gururaja, Taisei Kinoshita
  • Publication number: 20060040982
    Abstract: The present disclosure provides 2-substituted-quinoline compounds that inhibit the IgE receptor signaling cascade that leads to the release of chemical mediators, prodrugs of the compounds, intermediates and methods of synthesizing the compounds and methods of using the compounds in a variety of contexts, including in the treatment and/or prevention of diseases characterized by, caused by or associated with the release of chemical mediators via degranulation and other processes effected by activation of the IgE receptor signaling cascade.
    Type: Application
    Filed: June 29, 2005
    Publication date: February 23, 2006
    Applicant: Rigel Pharmaceuticals, Inc.
    Inventors: Hui Li, Rajinder Singh
  • Publication number: 20060035916
    Abstract: The present invention provides 2,4-pyrimidinediamine compounds that inhibit the IgE and/or IgG receptor signaling cascades that lead to the release of chemical mediators, intermediates and methods of synthesizing the compounds and methods of using the compounds in a variety of contexts, including in the treatment and prevention of diseases characterized by, caused by or associated with the release of chemical mediators via degranulation and other processes effected by activation of the IgE and/or IgG receptor signaling cascades.
    Type: Application
    Filed: June 8, 2005
    Publication date: February 16, 2006
    Inventors: Rajinder Singh, Ankush Argade, Donald Payan, Susan Molineaux, Sacha Holland, Jeffrey Clough, Holger Keim, Somasekhar Bhamidipati, Catherine Sylvain, Hui Li, Alexander Rossi
  • Publication number: 20060035891
    Abstract: The present disclosure provides 2,4-pyrimidinediamine compounds having antiproliferative activity, compositions comprising the compounds and methods of using the compounds to inhibit cellular proliferation and to treat proliferate diseases such as tumorigenic cancers.
    Type: Application
    Filed: May 18, 2005
    Publication date: February 16, 2006
    Inventors: Hui Li, Ankush Argade, Rajinder Singh, Sambaiah Thota, David Carroll, Kin Tso, Vanessa Taylor, John McLaughlin, Mark Markovtsov
  • Publication number: 20060025410
    Abstract: The present invention provides 2,4-pyrimidinediamine compounds that inhibit the IgE and/or IgG receptor signaling cascades that lead to the release of chemical mediators, intermediates and methods of synthesizing the compounds and methods of using the compounds in a variety of contexts, including in the treatment and prevention of diseases characterized by, caused by or associated with the release of chemical mediators via degranulation and other processes effected by activation of the IgE and/or IgG receptor signaling cascades.
    Type: Application
    Filed: June 8, 2005
    Publication date: February 2, 2006
    Inventors: Rajinder Singh, Ankush Argade, Donald Payan, Susan Molineaux, Sacha Holland, Jeffrey Clough, Holger Keim, Somasekhar Bhamidipati, Catherine Sylvain, Hui Li, Alexander Rossi