Patents by Inventor David Berard Smith

David Berard Smith 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).

  • Piperidine quaternary salts- CCR- 3 receptor antagonists
    Patent number: 6342509
    Abstract: This invention relates to certain piperidine quatemrwy salts of Formula (I): that are CCR-3 receptor antagonists, pharmaceutical compositions containing them, methods for their use and methods for preparing these compounds.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: January 29, 2002
    Assignee: Syntex (U.S.A.) LLC
    Inventors: Donald Roy Hirschfeld, Denis John Kertesz, David Berard Smith
  • 4-aroylpiperidine derivatives-CCR-3 receptor antagonists
    Patent number: 6140344
    Abstract: This invention relates to certain piperidine quaternary salts of Formula (I) ##STR1## that are CCR-3 receptor antagonists, pharmaceutical compositions containing them, methods for their use and methods for preparing these compounds.
    Type: Grant
    Filed: November 17, 1999
    Date of Patent: October 31, 2000
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Leyi Gong, Denis John Kertesz, David Berard Smith, Robert Stephen Wilhelm