Patents by Inventor Kevin K. Liu

Kevin K. Liu 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: 20110028452
    Abstract: The present invention is directed to novel pyrido[4,3-d]pyrimidin-4(3H)-one derivatives and pharmaceutically acceptable salts thereof of structural formula I wherein the variables R1, R2, R3, R4 and R5 are as described herein. Also provided are pharmaceutical compositions comprising the compounds of formula I as well as methods of treatment employing compounds of formula I to treat a disease or disorder characterized by abnormal bone or mineral homeostasis such as hypoparathyroidism, osteoporosis, osteopenia, periodontal disease, Paget's disease, bone fracture, osteoarthritis, rheumatoid arthritis, and humoral hypercalcemia of malignancy.
    Type: Application
    Filed: September 30, 2010
    Publication date: February 3, 2011
    Inventors: Mary T. Didiuk, Kevin K. Liu, David A. Griffith, Angel Guzman-Perez, Feng C. Bi, Daniel P. Walker
  • Patent number: 7829572
    Abstract: The present invention is directed to novel pyrido[4,3-d]pyrimidin-4(3H)-one derivatives and pharmaceutically acceptable salts thereof of structural formula I wherein the variables R1, R2, R3, R4 and R5 are as described herein. Also provided are pharmaceutical compositions comprising the compounds of formula I as well as methods of treatment employing compounds of formula I to treat a disease or disorder characterized by abnormal bone or mineral homeostasis such as hypoparathyroidism, osteoporosis, osteopenia, periodontal disease, Paget's disease, bone fracture, osteoarthritis, rheumatoid arthritis, and humoral hypercalcemia of malignancy.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: November 9, 2010
    Assignee: Pfizer Inc
    Inventors: Mary T. Didiuk, Kevin K. Liu, David A. Griffith, Angel Guzman-Perez, Feng C. Bi, Daniel P. Walker
  • Patent number: 7723643
    Abstract: A laser peening process for the densification of metal surfaces and sub-layers and for changing surface chemical activities provides retardation of the up-take and penetration of atoms and molecules, particularly Hydrogen, which improves the lifetime of such laser peened metals. Penetration of hydrogen into metals initiates an embrittlement that leaves the material susceptible to cracking.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: May 25, 2010
    Assignees: Lawrence Livermore National Security, LLC, University of California
    Inventors: Lloyd A. Hackel, Tania M. Zaleski, Hao-Lin Chen, Michael R. Hill, Kevin K. Liu
  • Patent number: 7713989
    Abstract: The present invention provides non-steroidal compounds of formula I which are selective modulators (i.e., agonists and antagonists) of a steroid receptor, specifically, the glucocorticoid receptor. The present invention also provides pharmaceutical compositions containing these compounds and methods for using these compounds to treat animals requiring glucocorticoid receptor agonist or antagonist therapy. Glucocorticoid receptor modulators are useful to the diseases, such as obesity, diabetes, inflammation and others as described below. The present invention also provides intermediates and processes for preparing these compounds.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: May 11, 2010
    Inventors: Robert L. Dow, Kevin K. Liu, Bradley P. Morgan, Andrew G. Swick
  • Patent number: 7351567
    Abstract: The present invention relates to a process for preparing 5-substitued-6-cyclic-5,6,7,8-tetrahydronaphthalen-2-ol compounds useful as an estrogen agonist.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: April 1, 2008
    Assignee: Pfizer Inc.
    Inventor: Kevin K. Liu
  • Patent number: 7166593
    Abstract: The present invention provides non-steroidal compounds of formula I which are selective modulators (i.e., agonist and antagonists) of a steroid receptor, specifically, the glucocorticoid receptor. The present invention also provides pharmaceutical compositions containing these compounds and methods for using these compounds to treat animals requiring glucocorticoid receptor agonist or antagonist therapy. Glucocorticoid receptor modulators are useful to treat diseases, such as obesity, diabetes, inflammation and others as described below.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: January 23, 2007
    Assignee: Pfizer, Inc.
    Inventors: Robert L. Dow, Kevin K. Liu, Bradley P. Morgan, Andrew G. Swick
  • Patent number: 6894050
    Abstract: Compounds of Formula (IA) that act as 5-HT receptor ligands and their uses in the treatment of diseases linked to the activation of 5-HT2 receptors in animals are described herein
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: May 17, 2005
    Assignee: Pfizer Inc.
    Inventors: Phoebe Chiang, William A. Novomisle, Willard M. Welch, Jr., Angel Guzman-Perez, Paul A. DaSilva-Jardine, Ravi S. Garigipati, Kevin K. Liu
  • Patent number: 6852719
    Abstract: The present invention provides non-steroidal compounds of Formula I, including prodrugs and pharmaceutically acceptable salts thereof, which are selective modulators (e.g., agonists, partial agonists and antagonists) of a steroid receptor, specifically, the glucocorticoid receptor. The present invention also provides pharmaceutical compositions containing these compounds and methods for using these compounds to treat animals requiring glucocorticoid receptor agonist or antagonist therapy. Glucocorticoid receptor modulators are useful to treat diseases, such as obesity, diabetes, inflammation and others as described below.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: February 8, 2005
    Assignees: Pfizer Inc., Pfizer Products, Inc.
    Inventors: Kevin K. Liu, Bradley P. Morgan, Ralph P. Robinson
  • Patent number: 6828134
    Abstract: The present invention relates to a process for preparing 5-substitued-6-cyclic-5,6,7,8-tetrahydronaphthalen-2-ol compounds useful as an estrogen agonist.
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: December 7, 2004
    Assignee: Pfizer Inc.
    Inventor: Kevin K. Liu
  • Publication number: 20040176415
    Abstract: The present invention relates to a process for preparing 5-substitued-6-cyclic-5,6,7,8-tetrahydronaphthalen-2-ol compounds useful as an estrogen agonist.
    Type: Application
    Filed: March 2, 2004
    Publication date: September 9, 2004
    Applicant: Pfizer Inc.
    Inventor: Kevin K. Liu
  • Publication number: 20040176595
    Abstract: The present invention provides non-steroidal compounds of formula I which are selective modulators (i.e., agonist and antagonists) of a steroid receptor, specifically, the glucocorticoid receptor. The present invention also provides pharmaceutical compositions containing these compounds and methods for using these compounds to treat animals requiring glucocorticoid receptor agonist or antagonist therapy. Glucocorticoid receptor modulators are useful to treat diseases, such as obesity, diabetes, inflammation and others as described below. The present invention also provides intermediates and processes for preparing these compounds.
    Type: Application
    Filed: November 25, 2003
    Publication date: September 9, 2004
    Applicant: Pfizer, Inc.
    Inventors: Robert L. Dow, Kevin K. Liu, Bradley P. Morgan, Andrew G. Swick
  • Patent number: 6699893
    Abstract: The present invention provides non-steroidal compounds of formula I which are selective modulators (i.e., agonists and antagonists) of a steroid receptor, specifically, the glucocorticoid receptor. The present invention also provides pharmaceutical compositions containing these compounds and methods for using these compounds to treat animals requiring glucocorticoid receptor agonist or antagonist therapy. Glucocorticoid receptor modulators are useful to treat diseases, such as obesity, diabetes, inflammation and others as described below. The present invention also provides intermediates and processes for preparing these compounds.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: March 2, 2004
    Assignee: Pfizer Inc
    Inventors: Robert L. Dow, Kevin K. Liu, Bradley P. Morgan, Andrew G. Swick
  • Publication number: 20040014741
    Abstract: The present invention provides non-steroidal compounds of Formula I, including prodrugs and pharmaceutically acceptable salts thereof, which are selective modulators (e.g., agonists, partial agonists and antagonists) of a steroid receptor, specifically, the glucocorticoid receptor. The present invention also provides pharmaceutical compositions containing these compounds and methods for using these compounds to treat animals requiring glucocorticoid receptor agonist or antagonist therapy. Glucocorticoid receptor modulators are useful to treat diseases, such as obesity, diabetes, inflammation and others as described below. The present invention also provides processes for preparing these compounds.
    Type: Application
    Filed: October 26, 2001
    Publication date: January 22, 2004
    Inventors: Kevin K. Liu, Bradley P. Morgan, Ralph P. Robinson
  • Publication number: 20030125334
    Abstract: Compounds of Formula (IA) that act as 5-HT receptor ligands and their uses in the treatment of diseases linked to the activation of 5-HT2 receptors in animals are described herein.
    Type: Application
    Filed: June 5, 2002
    Publication date: July 3, 2003
    Inventors: Phoebe Chiang, William A. Novomisle, Willard M. Welch, Angel Guzman-Perez, Paul A. DaSilva-Jardine, Ravi S. Garigipati, Kevin K. Liu
  • Publication number: 20020147336
    Abstract: The present invention provides non-steroidal compounds of formula I which are selective modulators (i.e., agonists and antagonists) of a steroid receptor, specifically, the glucocorticoid receptor. The present invention also provides pharmaceutical compositions containing these compounds and methods for using these compounds to treat animals requiring glucocorticoid receptor agonist or antagonist therapy. Glucocorticoid receptor modulators are useful to treat diseases, such as obesity, diabetes, inflammation and others as described below. The present invention also provides intermediates and processes for preparing these compounds.
    Type: Application
    Filed: February 19, 2002
    Publication date: October 10, 2002
    Inventors: Robert L. Dow, Kevin K. Liu, Bradley P. Morgan, Andrew G. Swick
  • Patent number: 6438006
    Abstract: A voltage multiplying circuit including a multiphase power stage and at least one phased voltage multiplier stage connected to the multiphase power stage.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: August 20, 2002
    Assignee: L-3 Communications Corporation
    Inventors: Hubert C. Martin, Robert H. Peterson, Kevin K. Liu, Steven W. Wiscomb, Larry N. Mercer, Matthew R. Reed, Parry L. Cowdell
  • Publication number: 20020107235
    Abstract: The present invention provides non-steroidal compounds of Formula I, and prodrugs and pharmaceutically acceptable salts thereof, which are selective modulators (e.g., agonists, partial agonists and antagonists) of a steroid receptor, specifically, the glucocorticoid receptor. The present invention also provides pharmaceutical compositions containing these compounds and methods for using these compounds to treat animals requiring glucocorticoid receptor agonist or antagonist therapy. Glucocorticoid receptor modulators are useful to treat diseases, such as obesity, diabetes, inflammation and others as described below. The present invention also provides processes for preparing these compounds.
    Type: Application
    Filed: October 26, 2001
    Publication date: August 8, 2002
    Inventors: Kevin K. Liu, Bradley P. Morgan, Ralph P. Robinson
  • Patent number: 6380223
    Abstract: The present invention provides non-steroidal compounds of formula I which are selective modulators (i.e., agonists and antagonists) of a steroid receptor, specifically, the glucocorticoid receptor. The present invention also provides pharmaceutical compositions containing these compounds and methods for using these compounds to treat animals requiring glucocorticoid receptor agonist or antagonist therapy. Glucocorticoid receptor modulators are useful to treat diseases, such as obesity, diabetes, inflammation and others as described below. The present invention also provides intermediates and processes for preparing these compounds.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: April 30, 2002
    Assignee: Pfizer Inc.
    Inventors: Robert L. Dow, Kevin K. Liu, Bradley P. Morgan, Andrew G. Swick
  • Publication number: 20020049219
    Abstract: The present invention relates to a process for preparing 5-substitued-6-cyclic-5,6,7,8-tetrahydronaphthalen-2-ol compounds useful as an estrogen agonist.
    Type: Application
    Filed: May 7, 2001
    Publication date: April 25, 2002
    Inventor: Kevin K. Liu