Patents by Inventor Li-Jeng Ping

Li-Jeng Ping 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).

  • Stereoselective synthesis of endothelin receptor antagonists
    Patent number: 6162932
    Abstract: The present invention is directed to chiral intermediates in a synthetic route for preparing endothelium receptor antagonists of formulae (7B) and (7A).
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: December 19, 2000
    Assignee: SmithKline Beecham Corporation
    Inventors: Robert John Mills, Conrad John Kowalski, Li-Jeng Ping, Kerry Joseph Gombatz
  • Stereoselective synthesis of endothelin receptor antagonists
    Patent number: 6080862
    Abstract: The present invention is directed to a synthetic route for preparing endothelium receptor antagonists of formulae (7B) and (7A) and to the chiral intermediates ##STR1##
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: June 27, 2000
    Assignee: SmithKline Beecham Corporation
    Inventors: Robert John Mills, Conrad John Kowalski, Li-Jeng Ping, Kerry Joseph Gombatz