Patents by Inventor Stephen Perren

Stephen Perren 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).

  • Bone plate
    Patent number: 6309393
    Abstract: The present invention relates to a bone plate having a top side, a bottom side for contacting the bone, two longitudinal sides, a plurality of holes which extend from the top side to the bottom side, and a longitudinal axis. The cross-section of the holes tapers from the top side to the bottom side and the bottom side is provided with recesses. The surface of the top side adjacent to the holes forms island-like recesses relative to the remaining surface of the top side. The bottom side is provided with two different types of recesses which create a plurality of supporting points for contacting the bone. In addition, the holes conically taper from the top side to the bottom side.
    Type: Grant
    Filed: February 10, 1999
    Date of Patent: October 30, 2001
    Assignee: Synthes (U.S.A.)
    Inventors: Slobodan Tepic, Stephen J. Bresina, Stephen Perren
  • Point contact bone compression plate
    Patent number: 5151103
    Abstract: A bone plate for use in osteosynthesis having a plurality of contact elements extending from its lower surface so that contact between plate and bone is reduced to the minimum contact needed during attachment of the plate to a bone.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: September 29, 1992
    Assignee: Synthes (U.S.A.)
    Inventors: Slobodan Tepic, Stephen Perren, Fritz Straumann, Franz Sutter