Patents by Inventor Ralph B. L. Gwatkin

Ralph B. L. Gwatkin 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).

  • Anti-fertility vaccine comprising solubilized zona pellucida and anti-serum
    Patent number: 3992520
    Abstract: A vaccine for immunological control of fertility is disclosed comprising solubilized mammalian zona pellucida; also disclosed are antisera specific against the antigenic mammalian zona pellucida; processes for the preparation of such vaccine and antisera; and methods of treatment comprising administering such vaccine and antisera for the immunological control of fertility.
    Type: Grant
    Filed: November 27, 1974
    Date of Patent: November 16, 1976
    Assignee: Merck & Co., Inc.
    Inventor: Ralph B. L. Gwatkin