Patents by Inventor Erhard Heisig

Erhard Heisig 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).

  • Method of securing a mesh to a metal substrate for a bone implant
    Patent number: 5139528
    Abstract: The wire mesh is welded to the metal substrate via step-like protuberances formed on the outer surface of the substrate. The wire mesh is permanently deformed in the regions over the protuberances to facilitate forming of spot welds while the remainder of the mesh outside the zones of the protuberances remains porous for the intake of bone cement or the ingrowth of bone tissue.
    Type: Grant
    Filed: May 15, 1990
    Date of Patent: August 18, 1992
    Assignee: Sulzer Brothers Limited
    Inventors: Rudolf Koch, Erhard Heisig
  • Bone implant
    Patent number: 4969904
    Abstract: The wire mesh is welded to the metal substrate via step-like protuberances formed on the outer surface of the substrate. The wire mesh is permanently deformed in the regions over the protuberances to facilitate forming of spot welds while the remainder of the mesh outside the zones of the protuberances remains porous for the intake of bone cement or the ingrowth of bone tissue.
    Type: Grant
    Filed: February 8, 1989
    Date of Patent: November 13, 1990
    Assignee: Sulzer Brothers Limited
    Inventors: Rudolf Koch, Erhard Heisig