Patents by Inventor Duane W. Hallesy

Duane W. Hallesy 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).

  • Contraceptive compositions and methods employing 1-substituted imidazole derivatives
    Patent number: 4439441
    Abstract: 1-Substituted imidazole derivatives exhibit spermatostatic and spermatocidal activity and are useful for contraceptive purposes both in male and female mammals.
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: March 27, 1984
    Assignee: SYNTEX (U.S.A.) Inc.
    Inventors: Duane W. Hallesy, Richard E. Jones, Brian H. Vickery, Keith A. M. Walker
  • Contraceptive compositions and methods employing 1-substituted imidazole derivatives
    Patent number: 4247552
    Abstract: 1-Substituted imidazole derivatives exhibit spermatostatic and spermatocidal activity and are useful for contraceptive purposes both in male and female mammals.
    Type: Grant
    Filed: January 11, 1979
    Date of Patent: January 27, 1981
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Duane W. Hallesy, Richard E. Jones, Brian H. Vickery, Keith A. M. Walker