Patents by Inventor Gerard de Witte

Gerard de Witte 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).

  • Antero-postero-stabilized knee prosthesis
    Patent number: 6699291
    Abstract: A prosthesis, such as a knee prosthesis, for the lower limb including a femur prosthetic element having a block presenting a lug running into the trochlea and adjacent to a notch from which a convex bearing surface extends, and a tibia prosthetic element having an insert with a sagittally oriented elevation defining a projection for antero-postero stabilization engaged in the notch when the prosthesis is in the extended position and which runs into a concave sliding ramp that extends to the rear edge of the insert.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: March 2, 2004
    Assignee: Merck Biomaterial France
    Inventors: Marc Augoyard, Gerard Bascoulergue, Maurice Basso, Rene Bertocchi, Philippe Charret, Philippe Courcelles, Jean-Louis Debiesse, Laurent Dupre La Tour, Guy Eyraud, Jean-Philippe Fayard, Paul-Henri Hulin, Francois Lecuire, Gilles Melere, Joseph Millon, Jean-Paul Passot, Jacques Peyrot, Marc Relave, Gerard de Witte, Michel Vernizeau
  • Dental root implant
    Patent number: 5762499
    Abstract: A dental root implant has a metal implant body which has transverse openings near its rounded lower end. The implant body has a shape which tapers downwards. Circumferential grooves are arranged parallel and mutually separated in its outer face, the grooves being rounded at their bases and at the junctions with neighboring outer face sections.
    Type: Grant
    Filed: June 21, 1996
    Date of Patent: June 9, 1998
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Michel Dard, Gerard De Witte, Philippe Rouvre