Patents by Inventor Helmut Grell

Helmut Grell 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).

  • Patent number: 4187559
    Abstract: A body joint endoprosthesis includes an anchoring member having a shaft anchored in a first bone and a pivot member connected to the anchoring member by a pivot joint. The pivot member includes a first body joint member and a support element that bears against a seating surface of the first bone. The first body joint member and a second body joint member, connected to the second bone, form the body implant joint.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: February 12, 1980
    Assignee: Sybron Corporation
    Inventors: Helmut Grell, Achim Engelhardt
  • Patent number: 4177524
    Abstract: A medical securement element with a self-tapping screw thread is provided with biocompatible abrasive grains at the surface of the thread. The grains are preferably embedded in a layer of porcelain enamel on a metal substrate.
    Type: Grant
    Filed: May 10, 1977
    Date of Patent: December 11, 1979
    Assignee: Pfaudler-Werke A.G.
    Inventors: Helmut Grell, Heinz Scharbach