Patents by Inventor Gebhard F. B. A. Schumacher

Gebhard F. B. A. Schumacher 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).

  • Method and apparatus for detection of fertility
    Patent number: 4534362
    Abstract: Method and apparatus for detecting the fertile and infertile phases of the human female menstrual cycle based upon observation of cyclic volumetric and gravimetric changes in cervico-vaginal fluid.
    Type: Grant
    Filed: May 7, 1982
    Date of Patent: August 13, 1985
    Assignee: University Patents, Inc.
    Inventors: Gebhard F. B. A. Schumacher, Stephen J. Usala