Patents by Inventor Hengmaio Cheng

Hengmaio Cheng 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).

  • Pyrazole ether derivatives as anti-inflammatory/analgesic agents
    Patent number: 6878726
    Abstract: The present invention relates to compounds of the formula: wherein R1, R2, R3, R4, R5, R6, R7, R8, A, X and Y are defined as in the specification, to pharmaceutical compositions containing them and to their medicinal use. The compounds of the invention are useful in the treatment or alleviation of inflammation and other inflammation associated disorders, such as arthritis, colon cancer, and Alzheimer's disease in mammals, preferably humans, dogs, cats and livestock animals.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: April 12, 2005
    Assignee: Pfizer Inc.
    Inventors: Hengmaio Cheng, Subas Man Sakya, Jason Kenneth Dutra
  • Pyrazole ether derivatives as anti-inflammatory/analgesic agents
    Publication number: 20050004135
    Abstract: The present invention relates to compounds of the formula wherein R1, R2, R3, R4, R5, R6, R7, R8, A, X and Y are defined as in the specification, to pharmaceutical compositions containing them and to their medicinal use. The compounds of the invention are useful in the treatment or alleviation of inflammation and other inflammation associated disorders, such as arthritis, colon cancer, and Alzheimer's disease in mammals, preferably humans, dogs, cats and livestock animals.
    Type: Application
    Filed: July 16, 2004
    Publication date: January 6, 2005
    Inventors: Hengmaio Cheng, Subas Sakya, Jason Dutra
  • Pyrazole ether derivatives as anti-inflammatory/analgesic agents
    Publication number: 20040259879
    Abstract: The present invention relates to compounds of the formula 1
    Type: Application
    Filed: July 16, 2004
    Publication date: December 23, 2004
    Inventors: Hengmaio Cheng, Subas Man Sakya, Jason Kenneth Dutra
  • C-4?-substituted macrolide derivatives
    Patent number: 6576749
    Abstract: Compounds are of the formula: and to pharmaceutically acceptable salts thereof. The compounds of formula 1 are potent antibacterial agents that can be used to treat various bacterial infections and disorders related to such infections. The invention also relates to pharmaceutical compositions including the compounds of formula 1 and to methods of treating bacterial infections by administering the compounds of formula 1. The invention also relates to methods of preparing the compounds of formula 1 and to intermediates useful in such preparation.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: June 10, 2003
    Assignee: Pfizer Inc.
    Inventors: Brian Scott Bronk, Takushi Kaneko, Michael Anthony Letavic, Hengmaio Cheng, Edward Alan Glazer, Bingwei Vera Yang
  • C-4"-substituted macrolide derivatives
    Publication number: 20020156026
    Abstract: This invention relates to compounds of formula (1) and to pharmaceutically acceptable salts thereof. The compounds of formula (1) are potent antibacterial agents that may be used to treat various bacterial infections and disorders related to such infections. The invention also relates to pharmaceutical compositions containing the compounds of formula (1) and to methods of treating bacterial infections by administering the compounds of formula (1). The invention also relates to methods of preparing the compounds of formula (1) and to intermediates useful in such preparation.
    Type: Application
    Filed: February 26, 2002
    Publication date: October 24, 2002
    Inventors: Brain Scott Bronk, Takushi Kaneko, Michael Anthony Letavic, Hengmaio Cheng, Edward Alan Glazer, Bingwei Vera Yang
  • C-4?-substituted macrolide derivatives
    Patent number: 6407074
    Abstract: This invention relates to compounds of the formula and to pharmaceutically acceptable salts thereof. The compounds of formula 1 are potent antibacterial agents that may be used to treat various bacterial infections and disorders related to such infections. The invention also relates to pharmaceutical compositions containing the compounds of formula 1 and to methods of treating bacterial infections by administering the compounds of formula 1. The invention also relates to methods of preparing the compounds of formula 1 and to intermediates useful in such preparation.
    Type: Grant
    Filed: February 16, 2000
    Date of Patent: June 18, 2002
    Assignee: Pfizer Inc
    Inventors: Brian Scott Bronk, Takushi Kaneko, Michael Anthony Letavic, Hengmaio Cheng, Edward Alan Glazer, Bingwei Vera Yang