Patents by Inventor William M. Snyder

William M. Snyder 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).

  • Pharmaceutical agents for the treatment of emesis
    Patent number: 6436961
    Abstract: The present invention relates to a novel process for preparing and resolving 3-amino-2-phenylpiperidine and for synthesizing from the enantiomers of such compound certain pharmaceutically active substituted 2-phenyl-3-benzylaminopiperidines. The substituted 2-phenyl-3-benzylaminopiperidines that can be prepared by the processes of this invention are substance P receptor antagonists and are useful in the treatment and prevention of inflammatory and central nervous system disorders, as well as several other disorders.
    Type: Grant
    Filed: September 18, 1995
    Date of Patent: August 20, 2002
    Assignee: Pfizer INC
    Inventors: Harry A. Watson, Jr., William M. Snyder, Glenn E. Wilcox
  • Processes for 2-(1-pentyl-3-guanidino)-4-(2-methyl-4-imidazolyl) thiazole and analogs
    Patent number: 4997981
    Abstract: An amine substituion process for 2-(1-pentyl-3-guanidino)-4-(2-methyl-4-imidazolyl)thiazole, for precursor N-(pentylamidino)thiourea, and for analogs thereof of said compounds.
    Type: Grant
    Filed: April 20, 1989
    Date of Patent: March 5, 1991
    Assignee: Pfizer Inc.
    Inventors: Paul D. Hill, William M. Snyder, Stanley W. Walinsky