Patents by Inventor Chris H. Senanayake

Chris H. Senanayake 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: 7732641
    Abstract: A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: June 8, 2010
    Assignee: Sepracor Inc.
    Inventors: Gerald J. Tanoury, Chris H. Senanayake, Donald W. Kessler
  • Publication number: 20090163456
    Abstract: Compositions containing ?2 adrenergic agonists in combination with carbonates and carbamates of the formula. and in combination with related steroid carbonates and carbamates are disclosed. The compositions are useful for treating bronchospasm, for inducing bronchodilation and for treating rhinitis, asthma, and chronic obstructive pulmonary disease (COPD) and inflammatory diseases, particularly by inhalation.
    Type: Application
    Filed: November 24, 2008
    Publication date: June 25, 2009
    Applicant: SEPRACOR INC.
    Inventors: Mark G. Currie, Steve Jones, Paul Grover, Chris H. Senanayake, Q. Kevin Fang
  • Publication number: 20090156862
    Abstract: A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph.
    Type: Application
    Filed: December 5, 2008
    Publication date: June 18, 2009
    Applicant: Sepracor Inc.
    Inventors: Gerald J. Tanoury, Chris H. Senanayake, Donald W. Kessler
  • Patent number: 7507843
    Abstract: A process for stereoselective synthesis of compounds of Formula X wherein: R1 is an aryl or heteroaryl group, each optionally independently substituted with one to three substituent groups, wherein each substituent group of R1 is independently C1-C5 alkyl, C2-C5 alkenyl, C2-C5 alkynyl, C3-C8 cycloalkyl, heterocyclyl, aryl, heteroaryl, C1-C5 alkoxy, C2-C5 alkenyloxy, C2-C5 alkynyloxy, aryloxy, C1-C5 alkanoyloxy, C1-C5 alkanoyl, aroyl, trifluoromethyl, trifluoromethoxy, or C1-C5 alkylthio, wherein each substituent group of R1 is optionally independently substituted with one to three substituent groups selected from methyl, methoxy, fluoro, chloro, hydroxy, oxo, cyano, or amino; and R2 and R3 are each independently hydrogen or C1-C5 alkyl, or R2 and R3 together with the carbon atom they are commonly attached to form a C3-C8 spiro cycloalkyl ring.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: March 24, 2009
    Assignee: Boehringer Ingelheim Pharmaceuticals, Inc.
    Inventors: Jinhua J. Song, Zhulin Tan, Jinghua Xu, Nathan K. Yee, Chris H. Senanayake
  • Patent number: 7468362
    Abstract: Compositions containing ?2 adrenergic agonists in combination with carbonates and carbonates of the formula and in combination with related steroid carbonates and carbonates are disclosed. The compositions are useful for treating bronchospasm, for inducing bronchodilator and for treating rhinitis, asthma, and chronic obstructive pulmonary disease (COPD) and inflammatory diseases, particularly by inhalation.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: December 23, 2008
    Assignee: Sepracor Inc.
    Inventors: Mark G. Currie, Steve Jones, Paul Grover, Chris H. Senanayake, Q. Kevin Fang
  • Publication number: 20080103119
    Abstract: Compositions containing ?2 adrenergic agonists in combination with carbonates and carbamates of the formula and in combination with related steroid carbonates and carbamates are disclosed. The compositions are useful for treating bronchospasm, for inducing bronchodilation and for treating rhinitis, asthma, and chronic obstructive pulmonary disease (COPD) and inflammatory diseases, particularly by inhalation.
    Type: Application
    Filed: July 13, 2007
    Publication date: May 1, 2008
    Applicant: SEPRACOR INC.
    Inventors: Mark G. Currie, Steve Jones, Paul Grover, Chris H. Senanayake, Q. Kevin Fang
  • Patent number: 7342132
    Abstract: A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph.
    Type: Grant
    Filed: August 4, 2006
    Date of Patent: March 11, 2008
    Assignee: Sepracor Inc.
    Inventors: Gerald J. Tanoury, Chris H. Senanayake, Donald W. Kessler
  • Patent number: 7253156
    Abstract: Compositions containing ?2 adrenergic agonists in combination with carbonates and carbamates of the formula and in combination with related steroid carbonates and carbamates are disclosed. The compositions are useful for treating bronchospasm, for inducing bronchodilation and for treating rhinitis, asthma, and chronic obstructive pulmonary disease (COPD) and inflammatory diseases, particularly by inhalation.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: August 7, 2007
    Assignee: Sepracor Inc.
    Inventors: Mark G. Currie, Steve Jones, Paul Grover, Chris H. Senanayake, Q. Kevin Fang
  • Patent number: 7145036
    Abstract: A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: December 5, 2006
    Assignee: Sepracor Inc.
    Inventors: Gerald J. Tanoury, Chris H. Senanayake, Donald W. Kessler
  • Patent number: 7018995
    Abstract: Carbonates and carbamates of the formula and related steroid carbonates and carbamates are disclosed. The compounds are useful for treating rhinitis and asthma, particularly by inhalation, and for treating inflammation, particularly by local or topical administration.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: March 28, 2006
    Assignee: Sepracor Inc.
    Inventors: Mark G. Currie, Steve Jones, Paul Grover, Chris H. Senanayake, Q. Kevin Fang
  • Publication number: 20040266864
    Abstract: This invention relates to novel compositions of matter containing enantiomerically enriched (−)-desmethylcitalopram, (+)-didesmethylcitalopram, or (−)-didesmethylcitalopram or mixtures thereof in optimal ratios. Contrary to prior teachings, the enantiomerically enriched citalopram metabolites disclosed herein possess potent serotonin reuptake inhibitory activity, with minimal inhibitory effects on the reuptake of other known monoamines, e.g., norepinephrine (NE) or dopamine (DA). The present invention also discloses methods for treating disorders, dysfunctions and diseases for which inhibition of serotonin reuptake is therapeutically beneficial. In particular, the present invention discloses a method for treating various forms of depression with pharmaceutical compositions described herein.
    Type: Application
    Filed: May 7, 2004
    Publication date: December 30, 2004
    Applicant: Sepracor Inc.
    Inventors: Larry R. Bush, Mark G. Currie, Q. Kevin Fang, Chris H. Senanayake
  • Patent number: 6822099
    Abstract: The invention relates to methods of resolving racemic amlodipine into enantiomerically enriched compositions by precipitation with tartaric acid in the presence of a non-aqueous solvent, such as N,N′-dimethylacetamide. The molar ratio of tartaric acid:amlodipine is preferably less than 0.25:1.0 or greater than 0.75:1.0.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: November 23, 2004
    Assignee: Sepracor, Inc.
    Inventors: Chris H. Senanayake, Gerald J. Tanoury, Harold S. Wilkinson, Roger P. Bakale, Andrei A. Zlota
  • Publication number: 20040176450
    Abstract: A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph.
    Type: Application
    Filed: March 23, 2004
    Publication date: September 9, 2004
    Applicant: SEPRACOR INC.
    Inventors: Gerald J. Tanoury, Chris H. Senanayake, Donald W. Kessler
  • Patent number: 6720453
    Abstract: A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: April 13, 2004
    Assignee: Sepracor Inc.
    Inventors: Gerald J. Tanoury, Chris H. Senanayake, Donald W Kessler
  • Publication number: 20030176407
    Abstract: Carbonates and carbamates of the formula 1
    Type: Application
    Filed: February 20, 2003
    Publication date: September 18, 2003
    Applicant: SEPRACOR INC.
    Inventors: Mark G. Currie, Steve Jones, Paul Grover, Chris H. Senanayake, Q. Kevin Fang
  • Publication number: 20030149304
    Abstract: A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph.
    Type: Application
    Filed: September 10, 2002
    Publication date: August 7, 2003
    Applicant: Sepracor Inc.
    Inventors: Gerald J. Tanoury, Chris H. Senanayake, Donald W. Kessler
  • Publication number: 20030130321
    Abstract: The invention relates to methods of resolving racemic amlodipine into enantiomerically enriched compositions by precipitation with tartaric acid in the presence of a non-aqueous solvent, such as N,N′-dimethylacetamide. The molar ratio of tartaric acid:amlodipine is preferably less than 0.25:1.0 or greater than 0.75:1.0.
    Type: Application
    Filed: December 20, 2002
    Publication date: July 10, 2003
    Applicant: Sepracor, Inc.
    Inventors: Chris H. Senanayake, Gerald J. Tanoury, Harold S. Wilkinson, Roger P. Bakale, Andrei A. Zlota
  • Publication number: 20030087963
    Abstract: The invention is directed, in part, to racemic and stereomerically pure 2-hydroxy derivatives of sibutramine and its metabolites, and 2-hydroxy derivatives of desmethylsibutramine and didesmethylsibutramine in particular. The invention is further directed to novel methods of preparing these derivatives are also disclosed.
    Type: Application
    Filed: September 11, 2002
    Publication date: May 8, 2003
    Inventors: Chris H. Senanayake, Thomas P. Jerussi, Mark G. Currie, Qun K. Fang, Bob Hsu
  • Publication number: 20030083338
    Abstract: The present invention provides methods and compositions for conjoint administration of a nefazodonoid and a fluoxetinoid for the treatment of depression and other neurological conditions.
    Type: Application
    Filed: March 1, 2002
    Publication date: May 1, 2003
    Inventors: Mark G. Currie, Tom Jerussi, Paul Rubin, Chris H. Senanayake
  • Patent number: 6472563
    Abstract: A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: October 29, 2002
    Assignee: Sepracor Inc.
    Inventors: Gerald J. Tanoury, Chris H. Senanayake, Donald W Kessler