Patents by Inventor Birenkumar Shah

Birenkumar Shah 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: 9938240
    Abstract: Provided are compounds of Formula I which are derivatives of 3-Hydroxypyridin-4-ones. The compounds may be used in treatment of a medical condition related to a toxic concentration of iron. The compounds may be used for preparation of a medicament for treatment of a medical condition related to a toxic concentration of iron. The medical condition related to a toxic concentration of iron may be selected from the group consisting of: cancer, pulmonary disease, progressive kidney disease and Friedreich's ataxia.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: April 10, 2018
    Assignee: Apotex Inc.
    Inventors: Tim Fat Tam, Regis Leung-Toung, Yingsheng Wang, Yanqing Zhao, Tao Xin, Birenkumar Shah
  • Publication number: 20170247329
    Abstract: Compounds of Formula I which are derivatives of 3-Hydroxypyridin-4-ones. The compounds may be used in treatment of a medical condition related to a toxic concentration of iron. The compounds may be used for preparation of a medicament for treatment of a medical condition related to a toxic concentration of iron. The medical condition related to a toxic concentration of iron may be selected from the group consisting of: cancer, pulmonary disease, progressive kidney disease and Friedreich's ataxia.
    Type: Application
    Filed: May 12, 2017
    Publication date: August 31, 2017
    Inventors: Tim Fat Tam, Regis Leung-Toung, Yingsheng Wang, Yanqing Zhao, Tao Xin, Birenkumar Shah, Blaise Maria N'Zemba, Jolanta Maria Wodzinska, Maryna Premyslova
  • Publication number: 20170088518
    Abstract: Provided are compounds of Formula I which are derivatives of 3-Hydroxypyridin-4-ones. The compounds may be used in treatment of a medical condition related to a toxic concentration of iron. The compounds may be used for preparation of a medicament for treatment of a medical condition related to a toxic concentration of iron. The medical condition related to a toxic concentration of iron may be selected from the group consisting of: cancer, pulmonary disease, progressive kidney disease and Friedreich's ataxia.
    Type: Application
    Filed: December 8, 2016
    Publication date: March 30, 2017
    Inventors: Tim Fat Tam, Regis Leung-Toung, Yingsheng Wang, Yanqing Zhao, Tao Xin, Birenkumar Shah
  • Patent number: 9550733
    Abstract: Provided are compounds of Formula I which are derivatives of 3-Hydroxypyridin-4-ones. The compounds may be used in treatment of a medical condition related to a toxic concentration of iron. The compounds may be used for preparation of a medicament for treatment of a medical condition related to a toxic concentration of iron. The medical condition related to a toxic concentration of iron may be selected from the group consisting of: cancer, pulmonary disease, progressive kidney disease and Friedreich's ataxia.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: January 24, 2017
    Assignee: Apotex Technologies Inc.
    Inventors: Tim Fat Tam, Regis Leung-Toung, Yingsheng Wang, Yanqing Zhao, Tao Xin, Birenkumar Shah, Blaise N'Zemba, Jolanta Maria Wodzinska, Maryna Premyslova
  • Publication number: 20160083346
    Abstract: Compounds of Formula I which are derivatives of 3-Hydroxypyridin-4-ones. The compounds may be used in treatment of a medical condition related to a toxic concentration of iron. The compounds may be used for preparation of a medicament for treatment of a medical condition related to a toxic concentration of iron. The medical condition related to a toxic concentration of iron may be selected from the group consisting of: cancer, pulmonary disease, progressive kidney disease and Friedreich's ataxia.
    Type: Application
    Filed: December 1, 2015
    Publication date: March 24, 2016
    Inventors: Tim Fat Tam, Regis Leung-Toung, Yingsheng Wang, Yanqing Zhao, Tao Xin, Birenkumar Shah, Blaise N'Zemba, Jolanta Maria Wodzinska, Maryna Premyslova
  • Publication number: 20150335626
    Abstract: Provided are compounds of Formula I which are derivatives of 3-Hydroxypyridin-4-ones. The compounds may be used in treatment of a medical condition related to a toxic concentration of iron. The compounds may be used for preparation of a medicament for treatment of a medical condition related to a toxic concentration of iron. The medical condition related to a toxic concentration of iron may be selected from the group consisting of: cancer, pulmonary disease, progressive kidney disease and Frederich's Ataxia.
    Type: Application
    Filed: June 10, 2015
    Publication date: November 26, 2015
    Inventors: Tim Fat TAM, Regis LEUNG-TOUNG, Yingsheng WANG, Yanqing ZHAO, Tao XIN, Birenkumar SHAH, Blaise N'ZEMBA, Jolanta Maria WODZINSKA, Maryna PREMYSLOVA
  • Publication number: 20150274665
    Abstract: Provided are compounds of Formula I which are derivatives of 3-Hydroxypyridin-4-ones. The compounds may be used in treatment of a medical condition related to a toxic concentration of iron. The compounds may be used for preparation of a medicament for treatment of a medical condition related to a toxic concentration of iron. The medical condition related to a toxic concentration of iron may be selected from the group consisting of: cancer, pulmonary disease, progressive kidney disease and Frederich's Ataxia.
    Type: Application
    Filed: June 11, 2015
    Publication date: October 1, 2015
    Inventors: Tim Fat TAM, Regis LEUNG-TOUNG, Yingsheng WANG, Yanqing ZHAO, Tao XIN, Birenkumar SHAH, Blaise N'ZEMBA, Jolanta Maria WODZINSKA, Maryna PREMYSLOVA, Jianmin Zhang
  • Patent number: 9073865
    Abstract: Provided are compounds of Formula I which are derivatives of 3-Hydroxypyridin-4-ones. The compounds may be used in treatment of a medical condition related to a toxic concentration of iron. The compounds may be used for preparation of a medicament for treatment of a medical condition related to a toxic concentration of iron. The medical condition related to a toxic concentration of iron may be selected from the group consisting of: cancer, pulmonary disease, progressive kidney disease and Frederich's Ataxia.
    Type: Grant
    Filed: July 5, 2010
    Date of Patent: July 7, 2015
    Assignee: Apotex Technologies Inc.
    Inventors: Tim Fat Tam, Regis Leung-Toung, Yingsheng Wang, Yanqing Zhao, Tao Xin, Birenkumar Shah, Blaise N'Zemba, Jolanta Maria Wodzinska, Maryna Premyslova
  • Publication number: 20150011484
    Abstract: The present invention provides pro-drugs of D-gamma-glutamyl-[D/L]-tryptophan, said pro-drugs are compounds of Formula I or pharmaceutically acceptable salts thereof, wherein G is C1-C8 alkyl or benzyl, T is C1-C8 alkyl or benzyl, and * is a chiral carbon in a (R) or (S) configuration, provided that when * is in the (R) configuration, at least one of G and T is C5-C8 alkyl; and use of compounds of Formula I in a pharmaceutical composition.
    Type: Application
    Filed: March 30, 2012
    Publication date: January 8, 2015
    Applicant: APTOEX TECHNOLOGIES, INC.
    Inventors: Tim Fat Tam, Regis Leung-Toung, Yinsheng Wang, Yanqing Zhao, Tao Xin, Wanren Li, Jolanta Maria Wodzinska, Vrajlal S. Rabadia, Birenkumar Shah, Christopher John Feeney
  • Publication number: 20120270882
    Abstract: Provided are compounds of Formula I which are derivatives of 3-Hydroxypyridin-4-ones. The compounds may be used in treatment of a medical condition related to a toxic concentration of iron. The compounds may be used for preparation of a medicament for treatment of a medical condition related to a toxic concentration of iron. The medical condition related to a toxic concentration of iron may be selected from the group consisting of: cancer, pulmonary disease, progressive kidney disease and Frederich's Ataxia.
    Type: Application
    Filed: July 5, 2010
    Publication date: October 25, 2012
    Applicant: APOTEX TECHNOLOGIES INC.
    Inventors: Tim Fat Tam, Regis Leung-Toung, Yingsheng Wang, Yangqing Zhao, Tao Xin, Birenkumar Shah, Blaise N'zemba, Jolanta Maria Wodzinska, Maryna Premyslova
  • Publication number: 20120157387
    Abstract: Provided are compounds which are prodrugs of D-gamma-glutamyl-D-tryptophan, methods of making the compounds and methods for using the compounds.
    Type: Application
    Filed: February 20, 2012
    Publication date: June 21, 2012
    Applicant: APOTEX TECHNOLOGIES INC.
    Inventors: Tim Fat TAM, Regis Leung-Toung, Yingsheng Wang, Yanqing Zhao, Tao Xin, Wanren Li, Jolanta Maria Wodzinska, Vrajlal S. Rabadia, Birenkumar Shah, Christopher John Feeney
  • Publication number: 20080096886
    Abstract: The present invention relates to a novel process for the preparation of 1-alkyl or 1-cycloalkyl derivatives of 3-hydroxy-4-oxo-1,4-dihydropyridine-2-carboxamide of formula I. The process includes reacting an amine R2NH2 with a compound of formula II in a solution of metal hydroxide in water to give a compound of formula III. Subsequent reaction of the compound of formula III with an acid chloride formation reagent in an inert solvent gives compounds of formula I. The acid chloride formation reagent is selected from oxalyl chloride and dimethylformamide, dimethylchloromethylene-ammonium chloride and thionyl chloride and dimethylformamide. If desired, a compound of formula I where R5 is hydrogen may be formed when an intermediate substituent is used wherein R5 is an alcohol protective group removable by catalytic hydrogenation.
    Type: Application
    Filed: November 17, 2005
    Publication date: April 24, 2008
    Applicant: APOTEX INC.
    Inventors: Tim Tam, Regis Leung-Toung, Yanqing Zhao, Wanren Li, Yingsheng Wang, Sandra Agostino, Birenkumar Shah
  • Publication number: 20070082904
    Abstract: The present invention provides an cycloalkyl derivative of 3-hydroxy-4-pyridinone which is useful for the chelation of metal ions such as iron. Its preparation and use is described. In particular, the invention concerns the removal of iron in chemical and biological systems including chelating agents having the formula (I); wherein R1 is X with the proviso that R2 is y; or R1 is T with the proviso that R2 is W; or R1 is X with the proviso that R2R5 N when taken together form a heterocyclic ring selected from piperidinyl, morpholinyl, pyrrolidinyl or piperazinyl, wherein the group piperidinyl, morphoninyl, pyrrolidinyl or piperazinyl is either unsubstituted or substituted with one to three C1 to C6 alkyl groups.
    Type: Application
    Filed: November 18, 2004
    Publication date: April 12, 2007
    Inventors: Tim Tam, Michael Spino, Wanren Li, Yingsheng Wang, Yanging Zhao, Birenkumar Shah