Patents by Inventor Chun-Sing Li

Chun-Sing Li 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).

  • Pyrones as inhibitors of cyclooxygenase-2
    Publication number: 20020058690
    Abstract: The invention encompasses the novel compounds of Formula I, which are useful in the treatment of cyclooxygenase-2 mediated diseases.
    Type: Application
    Filed: June 27, 2001
    Publication date: May 16, 2002
    Inventors: Chun-Sing Li, Cheuk Kun Lau, Michel Therien, Petpiboon Prasit
  • Phosphonic acid derivatives as inhibitors of protein tyrosine phosphatase 1B (PTP-1B)
    Publication number: 20020058644
    Abstract: The invention encompasses the novel class of compounds represented by formula I, which are inhibitors of the PTP-1B enzyme.
    Type: Application
    Filed: December 21, 2000
    Publication date: May 16, 2002
    Inventors: Yves Leblanc, Claude Dufresne, Jacques Yves Gauthier, Cheuk Kun Lau, Chun Sing Li, Patrick Roy, Michel Therien, John Scheigetz, Zhaoyin Wang
  • Phosphonic acid derivatives as inhibitors of protein tyrosine phosphatase IB (PTP-IB)
    Publication number: 20020052344
    Abstract: The invention encompasses the novel class of compounds represented by formula I which are inhibitors of the PTP-1B enzyme.
    Type: Application
    Filed: December 21, 2000
    Publication date: May 2, 2002
    Inventors: Yves Leblanc, Claude Dufresne, Scheigetz John, Cheuk Kun Lau, Chun Sing Li, Patrick Roy, Michael Boyd, Zhaoyin Wang
  • Phosphonic acid biaryl derivatives as inhibitors of protein tyrosine phosphatase 1B (PTP-1B)
    Publication number: 20020052346
    Abstract: The invention encompasses the novel class of compounds represented by formula I which are inhibitors of the PTP-1B enzyme.
    Type: Application
    Filed: December 21, 2000
    Publication date: May 2, 2002
    Inventors: Cheuk Kun Lau, Christopher Bayly, Jacques Yves Gauthier, Yves Leblanc, Chun Sing Li, Patrick Roy, Michel Therien, Zhaoyin Wang
  • Battery charger for cellular phone, having speaker
    Publication number: 20010006336
    Abstract: A battery charger for a cellular phone, having a speaker includes an ear jack connected to an ear jack of the cellular phone, for transmitting a voice signal of the cellular phone to the battery charger, a voice amplifier for amplifying the voice signal from the ear jack, and a speaker for converting the voice signal output from the voice amplifier into voice. The battery charger for a cellular phone, having a speaker further includes a communication port connected to a communication port of the cellular phone when the cellular phone is inserted(connected) to the battery charger, for mutually transmitting the voice signal, and a selector for connecting either the communication port or the ear jack with the voice amplifier.
    Type: Application
    Filed: December 28, 2000
    Publication date: July 5, 2001
    Applicant: LG Electronics Inc.
    Inventors: Sang Yong Yi, Claude Dufresne, Scheigetz John, Cheuk Kun Lau, Chun Sing Li, Patrick Roy, Michael Boyd, Zhaoyin Wang
  • Diphenyl-1,2,3-thiadiazol-3-oxides, compositions and methods of use
    Patent number: 6211210
    Abstract: The invention encompasses compounds of Formula I as well as a method of treating COX-2 mediated diseases comprising administration to a patient in need of such treatment of a non-toxic therapeutically effective amount of a compound of Formula I. The invention also encompasses certain pharmaceutical compositions for treatment of COX-2 mediated diseases comprising compounds of Formula I.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: April 3, 2001
    Assignee: Merck Frosst Canada & Co.
    Inventors: Cheuk Kun Lau, Chun-Sing Li, Cameron Black, Michel Therien, Jacques Yves Gauthier
  • Phosphonic acids derivatives as inhibitors of protein tyrosine phosphate 1B (PTP-1B)
    Patent number: 6174874
    Abstract: The invention encompasses the novel class of compounds represented by formula I which are inhibitors of the PTP-1B enzyme. The invention also encompasses pharmaceutical compositions and methods of treating or preventing PTP-1B mediated diseases.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: January 16, 2001
    Assignee: Merck Frosst Canada & Co.
    Inventors: Zhaoyin Wang, Claude Dufresne, Yves Leblanc, Chun Sing Li, Jacques Y. Gauthier, Cheuk K. Lau, Michel Therien, Patrick Roy
  • (Methylsulfonyl)phenyl-2-(5H)-furanones as COX-2 inhibitors
    Patent number: 6169188
    Abstract: The invention encompasses the novel compound of Formula I useful in the treatment of cyclooxygenase-2 mediated diseases. The invention also encompasses certain pharmaceutical compositions for treatment of cyclooxygenase-2 mediated diseases comprising compounds of Formula I.
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: January 2, 2001
    Assignee: Merck Frosst Canada & Co.
    Inventors: Michel Belley, Jacques Yves Gauthier, Erich Grimm, Yves LeBlanc, Chun-Sing Li, Michel Therien, Cameron Black, Petpiboon Prasit, Cheuk-Kun Lau, Patrick Roy
  • (Methylsulfonyl)phenyl-2-(5H)-furanones as COX-2 inhibitors
    Patent number: 6020343
    Abstract: The invention encompasses the novel compound of Formula I useful in the treatment of cyclooxygenase-2 mediated diseases. ##STR1## The invention also encompasses certain pharmaceutical compositions for treatment of cyclooxygenase-2 mediated diseases comprising compounds of Formula I.
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: February 1, 2000
    Assignee: Merck Frosst Canada, Inc.
    Inventors: Michel Belley, Jacques Yves Gauthier, Erich Grimm, Yves LeBlanc, Chun-Sing Li, Michel Therien, Cameron Black, Petpiboon Prasit, Cheuk-Kun Lau, Patrick Roy
  • Pyridazinones as inhibitors of cyclooxygenase-2
    Patent number: 6004960
    Abstract: The invention encompasses the novel compound of Formula I as well as a method of treating cyclooxygenase-2 mediated diseases comprising administration to a patient in need of such treatment of a non-toxic therapeutically effective amount of a compound of Formula I. ##STR1## The invention also encompasses certain pharmaceutical compositions for treatment of cyclooxygenase-2 mediated diseases comprising compounds of Formula I.
    Type: Grant
    Filed: March 13, 1998
    Date of Patent: December 21, 1999
    Assignee: Merck Frosst Canada, Inc.
    Inventors: Chun Sing Li, Jacques Y. Gauthier, Cheuk K. Lau, Michel Therien
  • (Methylsulfonyl)phenyl-2-(5H)-furanones as COX-2 inhibitors
    Patent number: 5981576
    Abstract: The invention encompasses the novel compound of Formula A that is useful in the treatment of cyclooxygenase-2 mediated diseases. ##STR1## The invention also encompasses certain pharmaceutical compositions for treatment of cyclooxygenase-2 mediated diseases comprising compounds of Formula A.
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: November 9, 1999
    Assignee: Merck Frosst Canada, Inc.
    Inventors: Michel Belley, Jacques Yves Gauthier, Erich Grimm, Yves LeBlanc, Chun-Sing Li, Michel Therien, Cameron Black, Petpiboon Prasit, Cheuk-Kun Lau, Patrick Roy
  • 5-Methanesulfonamido-3H-isobenzofuran-1-ones as inhibitors of cyclooxygenase-2
    Patent number: 5968958
    Abstract: The invention encompasses the novel compound of Formula I as well as a method of treating cyclooxygenase-2 mediated diseases comprising administration to a patient in need of such treatment of a non-toxic therapeutically effective amount of a compound of Formula I. ##STR1## The invention also encompasses certain pharmaceutical compositions for treatment of cyclooxygenase-2 mediated diseases comprising compounds of Formula I.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: October 19, 1999
    Assignee: Merck Frosst Canada, Inc.
    Inventors: Daniel Guay, Chun-Sing Li, Nathalie Ouimet
  • 5-methanesulfonamido-1-indanones as an inhibitor of cyclooxygenase-2
    Patent number: 5604260
    Abstract: The Compound of Formula I and pharmaceutically acceptable salts thereof in the treatment of cyclooxygenase-2 mediated diseases are disclosed.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: February 18, 1997
    Assignee: Merck Frosst Canada Inc.
    Inventors: Daniel Guay, Chun-Sing Li
  • Aryl substituted 5,5 fused aromatic nitrogen compounds as anti-inflammatory agents
    Patent number: 5552422
    Abstract: The invention encompasses the novel compound of Formula I as well as a method of treating cyclooxygenase-2 mediated diseases comprising administration to a patient in need of such treatment of a non-toxic therapeutically effective amount of a compound of Formula I. ##STR1## The invention also encompasses certain pharmaceutical compositions for treatment of cyclooxygenase-2 mediated diseases comprising compounds of Formula I.
    Type: Grant
    Filed: January 11, 1995
    Date of Patent: September 3, 1996
    Assignee: Merck Frosst Canada, Inc.
    Inventors: Jacques Y. Gauthier, Cheuk K. Lau, Yves LeBlanc, Chun-Sing Li, Patrick Roy, Michel Therien, Zhaoyin Wang
  • Alkanesulfonamido-1-indanone derivatives as inhibitors of cyclooxygenase
    Patent number: 5409944
    Abstract: Disclosed are compounds of Formula I useful in the treatment of cyclooxygenase mediated diseases such as pain, fever and inflammation of a variety of conditions including rheumatic fever, symptoms associated with influenza or other viral infections, common cold, low back and neck pain, dysmenorrhea, headache, toothache, sprains and strains, myositis, neuralgia, synovitis, arthritis, including rheumatoid arthritis degenerative joint diseases (osteoarthritis), gout and ankylosing spondylitis, bursitis, burns, injuries.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: April 25, 1995
    Assignee: Merck Frosst Canada, Inc.
    Inventors: W. Cameron Black, Chun-Sing Li, Daniel Guay, Petpiboon Prasit, Patrick Roy