Patents by Inventor William F. Zingheim

William F. Zingheim 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).

  • Dental implant
    Patent number: 4904187
    Abstract: A dental device implantable in bone comprises a hollow cylinder which has an open end and a closed end with an outer surface between the ends. A plurality of shallow oblong-shaped grooves are formed into the surface near the closed end with the longitudinal axis of the grooves aligned to inhibit rotation of the device in the bone. Additionally, a shallow annular depression traversing each of the grooves is formed into the surface to inhibit vertical displacement of the device in the bone.
    Type: Grant
    Filed: April 13, 1988
    Date of Patent: February 27, 1990
    Assignee: Tri-Stage, Inc.
    Inventor: William F. Zingheim