Patents by Inventor Steve T. Zelson

Steve T. Zelson 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 device
    Patent number: 5025800
    Abstract: This invention relates to contraceptive devices. More particularly, this invention relates to novel contraceptive devices for males and females which provide immunological barriers to the spread of sexually transmitted diseases along with related methods to prevent the spread of these diseases.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: June 25, 1991
    Inventor: Steve T. Zelson