Patents by Inventor Larry L. Ewing

Larry L. Ewing 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).

  • Male contraception
    Patent number: 4210644
    Abstract: A method of affecting male contraception which comprises subdermally implanting in the male an effective amount of an androgen and an estrogen in one or more slow release capsules. The combination of androgen and estrogen may also be used to enhance libido in an aging male.
    Type: Grant
    Filed: February 23, 1978
    Date of Patent: July 1, 1980
    Assignee: The Johns Hopkins University
    Inventors: Larry L. Ewing, Claude Desjardins