Patents by Inventor Christopher John Helal

Christopher John Helal 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: 20150353579
    Abstract: The present invention is directed to a new class of triazine derivatives as described by formula I below in which A, X, R1, R2, R3, and R4 are as defined herein and to the use of the compounds as PDE10 inhibitors.
    Type: Application
    Filed: August 19, 2015
    Publication date: December 10, 2015
    Inventors: Thomas Allen Chappie, Christopher John Helal, Bethany Lyn Kormos, Jamison Bryce Tuttle, Patrick Robert Verhoest
  • Patent number: 9200000
    Abstract: The present invention relates to compounds of the Formula and pharmaceutically acceptable salts thereof, to processes for the preparation of, intermediates used in the preparation of, and compositions containing such compounds and the uses of such compounds as a method for the treatment of a disease or condition selected from the group consisting of central nervous system disorders, cognitive disorders, schizophrenia, dementia and other disorders in a mammal.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: December 1, 2015
    Assignee: Pfizer Inc.
    Inventors: Christopher John Helal, Thomas Allen Chappie, John Michael Humphrey, Patrick Robert Verhoest, Eddie Yang
  • Patent number: 9145427
    Abstract: The present invention is directed to a new class of triazine derivatives as described by formula I below in which A, X, R1, R2, R3, and R4 are as defined herein and to the use of the compounds as PDE10 inhibitors.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: September 29, 2015
    Assignee: Pfizer Inc.
    Inventors: Thomas Allen Chappie, Christopher John Helal, Bethany Lyn Kormos, Jamison Byrce Tuttle, Patrick Robert Verhoest
  • Publication number: 20150087637
    Abstract: Compounds and pharmaceutically acceptable salts of the compounds are disclosed, wherein the compounds have the structure of Formula I, as defined in the specification. Corresponding pharmaceutical compositions, methods of treatment, methods of synthesis, and intermediates are also disclosed.
    Type: Application
    Filed: December 4, 2014
    Publication date: March 26, 2015
    Applicant: PFIZER INC.
    Inventors: Michael Aaron Brodney, Christopher Ryan Butler, Christopher John Helal, Brian Thomas O'Neill
  • Publication number: 20150080401
    Abstract: The present invention is directed to a new class of triazine derivatives as described by formula I below in which A, X, R1, R2, R3, and R4 are as defined herein and to the use of the compounds as PDE10 inhibitors.
    Type: Application
    Filed: November 21, 2014
    Publication date: March 19, 2015
    Inventors: Thomas Allen Chappie, Christopher John Helal, Bethany Lyn Kormos, Jamison Bryce Tuttle, Patrick Robert Verhoest
  • Patent number: 8933224
    Abstract: The present invention is directed to a new class of triazine derivatives as described by formula I below in which A, X, R1, R2, R3, and R4 are as defined herein and to the use of the compounds as PDE10 inhibitors.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: January 13, 2015
    Assignee: Pfizer Inc.
    Inventors: Thomas Allen Chappie, Christopher John Helal, Bethany Lyn Kormos, Jamison Bryce Tuttle, Patrick Robert Verhoest
  • Patent number: 8933221
    Abstract: Compounds and pharmaceutically acceptable salts of the compounds are disclosed, wherein the compounds have the structure of Formula I, as defined in the specification. Corresponding pharmaceutical compositions, methods of treatment, methods of synthesis, and intermediates are also disclosed.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: January 13, 2015
    Assignee: Pfizer Inc.
    Inventors: Michael Aaron Brodney, Christopher Ryan Butler, Christopher John Helal, Brian Thomas O'Neill
  • Publication number: 20140329820
    Abstract: The present invention is directed to a new class of triazine derivatives as described by formula I below in which A, X, R1, R2, R3, and R4 are as defined herein and to the use of the compounds as PDE10 inhibitors.
    Type: Application
    Filed: April 30, 2014
    Publication date: November 6, 2014
    Applicant: Pfizer Inc.
    Inventors: Thomas Allen Chappie, Christopher John Helal, Bethany Lyn Kormos, Jamison Bryce Tuttle, Patrick Robert Verhoest
  • Patent number: 8829010
    Abstract: The present invention provides, inter alia, compounds of Formula (I) and pharmaceutically acceptable salts thereof, to processes for the preparation of, intermediates used in the preparation of, and compositions containing such compounds and the uses of such compounds as a method for the treatment of a disease or condition selected from the group consisting of central nervous system disorders, cognitive disorders, schizophrenia, dementia and other disorders in a mammal. The present invention further provides compounds of Formula (Id) and pharmaceutically acceptable salts thereof as CYP3A4 selective inhibitors.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: September 9, 2014
    Assignee: Pfizer Inc.
    Inventors: Christopher John Helal, Thomas Allen Chappie, John Michael Humphrey
  • Publication number: 20140088081
    Abstract: The invention provides PDE9-inhibiting compounds of Formula (I), and pharmaceutically acceptable salts thereof, wherein R1, R2, R3, A, and n are as defined herein. Pharmaceutical compositions containing the compounds of Formula I, and uses thereof in treating neurodegenerative and cognitive disorders, such as Alzheimer's disease and schizophrenia, are also provided.
    Type: Application
    Filed: November 27, 2013
    Publication date: March 27, 2014
    Applicant: Pfizer Inc.
    Inventors: Michelle Marie Claffey, Christopher John Helal, Patrick Robert Verhoest
  • Publication number: 20140080806
    Abstract: The present invention provides, inter alia, compounds of Formula (I) and pharmaceutically acceptable salts thereof, to processes for the preparation of, intermediates used in the preparation of and compositions containing such compounds and the uses of such compounds as a method for the treatment of a disease or condition selected from the group consisting of central nervous system disorders, cognitive disorders, schizophrenia, dementia and other disorders in a mammal. The present invention further provides compounds of Formula (Id) and pharmaceutically acceptable salts thereof as CYP3A4 selective inhibitors.
    Type: Application
    Filed: May 24, 2012
    Publication date: March 20, 2014
    Inventors: Christopher John Helal, Thomas Allen Chappie, John Michael Humphrey
  • Publication number: 20140066622
    Abstract: The present invention relates to compounds of the Formula and pharmaceutically acceptable salts thereof, to processes for the preparation of, intermediates used in the preparation of, and compositions containing such compounds and the uses of such compounds as a method for the treatment of a disease or condition selected from the group consisting of central nervous system disorders, cognitive disorders, schizophrenia, dementia and other disorders in a mammal.
    Type: Application
    Filed: November 1, 2013
    Publication date: March 6, 2014
    Applicant: Pfizer Inc.
    Inventors: Christopher John Helal, Thomas Allen Chappie, John Michael Humphrey, Patrick Robert Verhoest, Eddie Yang
  • Patent number: 8618117
    Abstract: The invention provides PDE9-inhibiting compounds of Formula (I), and pharmaceutically acceptable salts thereof, wherein R1, R2, R3, A, and n are as defined herein. Pharmaceutical compositions containing the compounds of Formula I, and uses thereof in treating neurodegenerative and cognitive disorders, such as Alzheimer's disease and schizophrenia, are also provided.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: December 31, 2013
    Assignee: Pfizer Inc.
    Inventors: Michelle Marie Claffey, Christopher John Helal, Patrick Robert Verhoest
  • Patent number: 8598155
    Abstract: The present invention relates to compounds of the Formula and pharmaceutically acceptable salts thereof, to processes for the preparation of, intermediates used in the preparation of, and compositions containing such compounds and the uses of such compounds as a method for the treatment of a disease or condition selected from the group consisting of central nervous system disorders, cognitive disorders, schizophrenia, dementia and other disorders in a mammal.
    Type: Grant
    Filed: February 20, 2012
    Date of Patent: December 3, 2013
    Assignee: Pfizer Inc.
    Inventors: Christopher John Helal, Thomas Allen Chappie, John Michael Humphrey, Patrick Robert Verhoest, Eddie Yang
  • Publication number: 20130150376
    Abstract: Compounds and pharmaceutically acceptable salts of the compounds are disclosed, wherein the compounds have the structure of Formula I (I) as defined in the specification. Corresponding pharmaceutical compositions, methods of treatment, methods of synthesis, and intermediates are also disclosed.
    Type: Application
    Filed: March 31, 2011
    Publication date: June 13, 2013
    Applicant: PFIZER INC.
    Inventors: Michael Aaron Brodney, Ivan Viktorovich Efremov, Christopher John Helal, Brian Thomas O'Neill
  • Publication number: 20130053373
    Abstract: Compounds and pharmaceutically acceptable salts of the compounds are disclosed, wherein the compounds have the structure of Formula I, as defined in the specification. Corresponding pharmaceutical compositions, methods of treatment, methods of synthesis, and intermediates are also disclosed.
    Type: Application
    Filed: August 28, 2012
    Publication date: February 28, 2013
    Inventors: Michael Aaron BRODNEY, Christopher Ryan BUTLER, Christopher John HELAL, Brian Thomas O'NEILL
  • Publication number: 20120329777
    Abstract: The invention provides PDE9-inhibiting compounds of Formula (I), and pharmaceutically acceptable salts thereof, wherein R1, R2, R3, A, and n are as defined herein. Pharmaceutical compositions containing the compounds of Formula I, and uses thereof in treating neurodegenerative and cognitive disorders, such as Alzheimer's disease and schizophrenia, are also provided.
    Type: Application
    Filed: August 31, 2012
    Publication date: December 27, 2012
    Inventors: Michelle Marie Claffey, Christopher John Helal, Patrick Robert Verhoest
  • Publication number: 20120214791
    Abstract: The present invention relates to compounds of the Formula and pharmaceutically acceptable salts thereof, to processes for the preparation of, intermediates used in the preparation of, and compositions containing such compounds and the uses of such compounds as a method for the treatment of a disease or condition selected from the group consisting of central nervous system disorders, cognitive disorders, schizophrenia, dementia and other disorders in a mammal.
    Type: Application
    Filed: February 20, 2012
    Publication date: August 23, 2012
    Inventors: Christopher John HELAL, Thomas Allen CHAPPIE, John Michael HUMPHREY, Patrick Robert VERHOEST, Eddie YANG
  • Patent number: 8012969
    Abstract: The invention relates to “C-labeled compounds, their preparation, compositions comprising an effective amount of a “C-labeled compound, and the use of a “C-labeled compound as a radiopharmaceutical for positron emission tomography.
    Type: Grant
    Filed: January 11, 2006
    Date of Patent: September 6, 2011
    Assignee: GE Healthcare Limited
    Inventors: Christopher John Helal, Gunnar Antoni, Bengt Langstrom, Jia Zhi Sheng, Susan Beth Sobolov-Jaynes, Timothy James McCarthy
  • Patent number: 7479559
    Abstract: The present invention relates to novel benzyl(idene)-lactam derivatives, compounds of the formula I wherein R1 is a group of the formula G1 or G2 depicted below, wherein R1, R3, R6, R13 X, a, n and m are as defined herein, their pharmaceutically acceptable salts, and pharmaceutical compositions which include selective antagonists, inverse agonists and partial agonists of serotonin 1 (5-HT1) receptors, specifically, of one or both of the 5-HT1A and 5-HT1B receptors. The compounds of the invention are useful in treating or preventing depression, anxiety, obsessive compulsive disorder (OCD) and other disorders for which a 5-HT1 agonist or antagonist is indicated and have reduced potential for cardiac side effects, in particular QTc prolongation.
    Type: Grant
    Filed: March 17, 2005
    Date of Patent: January 20, 2009
    Assignee: Pfizer Inc.
    Inventors: Michael Aaron Brodney, Stephane Caron, Christopher John Helal, Jeffrey W. Raggon, Yong Tao, Nga M. Do