Patents by Inventor Gamal A. Ragheb

Gamal A. Ragheb 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: 4932422
    Abstract: A contraceptive device having a cylindrical body adapted to be retained within the cervix having a valve mechanism adapted to allow passage of menstrual fluid yet blocking seminal fluid.
    Type: Grant
    Filed: June 12, 1989
    Date of Patent: June 12, 1990
    Inventor: Gamal A. Ragheb