Patents by Inventor Karl-Gerhart Stubmer

Karl-Gerhart Stubmer 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).

  • Prosthetic acetabulum
    Patent number: 4919677
    Abstract: The turns of the self-tapping screwthread formed on the outside surface of the metal hemispherical shell have front portions of constant thickness which extend over one third of the cross sectional length of the thread turn. The remainder of the thread turns is wedge-shaped. The shape of the thread turns facilitates the cutting in of the screw thread when the hemispherical shell is being implanted.
    Type: Grant
    Filed: August 11, 1989
    Date of Patent: April 24, 1990
    Assignee: Sulzer Brothers Limited
    Inventors: Karl-Gerhart Stubmer, Rudolf Koch, Otto Frey