Patents by Inventor Kumar Thakur

Kumar Thakur 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).

  • Patent number: 8461170
    Abstract: The present invention relates to compounds of Formula (I) and/or Formula (Ia): and to their salts, pharmaceutical compositions, methods of use, and methods for their preparation. These compounds inhibit ALK kinase activity, and thus may be used for the treatment of cancer.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: June 11, 2013
    Assignee: Astrazeneca AB
    Inventors: Brian Aquila, Victor Kamhi, Bo Peng, Timothy Pontz, Jamal Carlos Saeh, Kumar Thakur, Bin Yang
  • Publication number: 20120028924
    Abstract: The present invention relates to compounds of Formula (I) and/or Formula (Ia): and to their salts, pharmaceutical compositions, methods of use, and methods for their preparation. These compounds inhibit ALK kinase activity, and thus may be used for the treatment of cancer.
    Type: Application
    Filed: August 2, 2011
    Publication date: February 2, 2012
    Applicant: ASTRAZENECA AB
    Inventors: Brian AQUILA, Victor KAMHI, Bo PENG, Timothy PONTZ, Jamal Carlos SAEH, Kumar THAKUR, Bin YANG
  • Patent number: 6410751
    Abstract: Stable, enzymatically triggered chemiluminescent 1,2-dioxetanes with improved water solubility and storage stability are provided as well as synthetic processes and intermediates used in their preparation. Dioxetanes further substituted with two or more water-solubilizing groups disposed on the dioxetane structure and an additional fluorine atom or lower alkyl group provide superior performance by eliminating the problem of reagent carryover when used in assays performed on capsule chemistry analytical systems. These dioxetanes display substantially improved stability on storage. Compositions comprising these dioxetanes, a non-polymeric cationic surfactant enhancer and optionally a fluorescer, for providing enhanced chemiluminescence are also provided.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: June 25, 2002
    Assignee: Lumigen, Inc.
    Inventors: Hashem Akhavan-Tafti, Renuka DeSilva, Kumar Thakur, Zahra Arghavani
  • Patent number: 6353129
    Abstract: Stable, enzymatically triggered chemiluminescent 1,2-dioxetanes with improved water solubility and storage stability are provided as well as synthetic processes and intermediates used in their preparation. Dioxetanes further substituted with two or more water-solubilizing groups disposed on the dioxetane structure and an additional fluorine atom or lower alkyl group provide superior performance by eliminating the problem of reagent carryover when used in assays performed on capsule chemistry analytical systems. These dioxetanes display substantially improved stability on storage. Compositions comprising these dioxetanes, a non-polymeric cationic surfactant enhancer and optionally a fluorescer, for providing enhanced chemiluminescence are also provided.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: March 5, 2002
    Assignee: Lumigen, Inc.
    Inventors: Hashem Akhavan-Tafti, Renuka DeSilva, Kumar Thakur, Zahra Arghavani
  • Publication number: 20020019553
    Abstract: Stable, enzymatically triggered chemiluminescent 1,2-dioxetanes with improved water solubility and storage stability are provided as well as synthetic processes and intermediates used in their preparation. Dioxetanes further substituted with two or more water-solubilizing groups disposed on the dioxetane structure and an additional fluorine atom or lower alkyl group provide superior performance by eliminating the problem of reagent carryover when used in assays performed on capsule chemistry analytical systems. These dioxetanes display substantially improved stability on storage. Compositions comprising these dioxetanes, a non-polymeric cationic surfactant enhancer and optionally a fluorescer, for providing enhanced chemiluminescence are also provided.
    Type: Application
    Filed: April 20, 2001
    Publication date: February 14, 2002
    Inventors: Hashem Akhavan-Tafti, Renuka DeSilva, Kumar Thakur, Zahra Arghavani
  • Patent number: 6245928
    Abstract: Stable, enzymatically triggered chemiluminescent 1,2-dioxetanes with improved water solubility and storage stability are provided as well as synthetic processes and intermediates used in their preparation. Dioxetanes further substituted with two or more water-solubilizing groups disposed on the dioxetane structure and an additional fluorine atom or lower alkyl group provide superior performance by eliminating the problem of reagent carryover when used in assays performed on capsule chemistry analytical systems. These dioxetanes display substantially improved stability on storage. Compositions comprising these dioxetanes, a non-polymeric cationic surfactant enhancer and optionally a fluorescer, for providing enhanced chemiluminescence are also provided.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: June 12, 2001
    Assignee: Lumigen, Inc.
    Inventors: Zahra Arghavani, Hashem Akhavan-Tafti, Renuka DeSilva, Kumar Thakur
  • Patent number: 6180833
    Abstract: Stable, enzymatically triggered chemiluminescent 1,2-dioxetanes with improved water solubility and storage stability are provided as well as synthetic processes and intermediates used in their preparation. Dioxetanes further substituted with two or more water-solubilizing groups disposed on the dioxetane structure and an additional fluorine atom or lower alkyl group provide superior performance by eliminating the problem of reagent carryover when used in assays performed on capsule chemistry analytical systems. These dioxetanes display substantially improved stability on storage. Compositions comprising these dioxetanes, a non-polymeric cationic surfactant enhancer and optionally a fluorescer, for providing enhanced chemiluminescence are also provided.
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: January 30, 2001
    Assignee: Lumigen, Inc.
    Inventor: Kumar Thakur
  • Patent number: 6036892
    Abstract: Stable, enzymatically triggered chemiluminescent 1,2-dioxetanes with improved water solubility and storage stability are provided as well as synthetic processes and intermediates used in their preparation. Dioxetanes further substituted with two or more water-solubilizing groups disposed on the dioxetane structure and an additional fluorine atom or lower alkyl group provide superior performance by eliminating the problem of reagent carryover when used in assays performed on capsule chemistry analytical systems. These dioxetanes display substantially improved stability on storage. Compositions comprising these dioxetanes, a non-polymeric cationic surfactant enhancer and optionally a fluorescer, for providing enhanced chemiluminescence are also provided.
    Type: Grant
    Filed: July 7, 1998
    Date of Patent: March 14, 2000
    Assignee: Lumigen, Inc.
    Inventors: Zahra Arghavani, Hashem Akhavan-Tafti, Renuka DeSilva, Kumar Thakur
  • Patent number: 5866045
    Abstract: Stable, enzymatically triggered chemiluminescent 1,2-dioxetanes with improved water solubility and storage stability are provided. Dioxetanes further substituted with two or more water-solubilizing groups disposed on the dioxetane structure and an additional fluorine atom or lower alkyl group provide superior performance by eliminating the problem of reagent carryover when used in assays performed on capsule chemistry analytical systems. These dioxetanes display substantially improved stability on storage. Compositions comprising these dioxetanes, a non-polymeric cationic surfactant enhancer and optionally a fluorescer, for providing enhanced chemiluminescence are also provided.
    Type: Grant
    Filed: July 17, 1997
    Date of Patent: February 2, 1999
    Assignee: Lumigen, Inc.
    Inventors: Hashem Akhavan-Tafti, Zahra Arghavani, Renuka DeSilva, Kumar Thakur
  • Patent number: 5721370
    Abstract: Stable, enzymatically triggered chemiluminescent 1,2-dioxetanes with improved water solubility and storage stability are provided. Dioxetanes further substituted with two or more water-solubilizing groups disposed on the dioxetane structure and an additional fluorine atom or lower alkyl group provide superior performance by eliminating the problem of reagent carryover when used in assays performed on capsule chemistry analytical systems. These dioxetanes display substantially improved stability on storage. Compositions comprising these dioxetanes, a non-polymeric cationic surfactant enhancer and optionally a fluorescer, for providing enhanced chemiluminescence are also provided.
    Type: Grant
    Filed: November 8, 1996
    Date of Patent: February 24, 1998
    Assignee: Lumigen Inc.
    Inventors: Hashem Akhavan-Tafti, Zahra Arghavani, Renuka DeSilva, Kumar Thakur