Patents by Inventor Frank Istvan Pongracz

Frank Istvan Pongracz 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).

  • Intra-uterine contraceptive device
    Patent number: 3996932
    Abstract: An intra-uterine contraceptive device of the inflatable type provided with a plurality of protrusions for providing an unimpeded passage of the menstrual flow, such protrusions in one embodiment are wave-like configurations and in other embodiments they are arm-like extensions for providing also a plurality of contact regions with the inner wall of the uterus.
    Type: Grant
    Filed: May 15, 1975
    Date of Patent: December 14, 1976
    Inventors: Laszlo Kalman Csatary, Frank Istvan Pongracz
  • Intra-uterine contraceptive device
    Patent number: 3933153
    Abstract: An intra-uterine contraceptive device of the inflatable type provided with a plurality of protrusions for providing an unimpeded passage of the menstrual flow, such protrusions in one embodiment are wave-like configurations and in other embodiments they are arm-like extensions for providing also a plurality of contact regions with the inner wall of the uterus. Also devices are disclosed for the insertion of the contraceptive device.
    Type: Grant
    Filed: March 18, 1974
    Date of Patent: January 20, 1976
    Inventors: Laszlo Kalman Csatary, Frank Istvan Pongracz