Patents by Inventor Friedhelm Hedrich

Friedhelm Hedrich 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).

  • Prosthesis parts provided with a coating of a bio-active material
    Patent number: 4365356
    Abstract: Disclosed are novel prosthesis parts of improved properties which are obtained by providing a material as used for prosthesis with an enamel or enamel-like coating and incorporating in said enamel layer, while in a viscous state, a bio-active material. Such prosthesis parts have a satisfactory adhesive strength and coefficient of expansion, are substantially free of pores, are highly corrosion resistant, and readily grow intimately and firmly together with the bone tissue without the use of bone cement.
    Type: Grant
    Filed: July 21, 1980
    Date of Patent: December 28, 1982
    Assignee: Ernst Leitz Wetzlar GmbH
    Inventors: Heinz Broemer, Werner Adam, Friedhelm Hedrich
  • Prosthesis parts provided with a coating of a bio-active material, process of making same, and method of using them for bone replacement
    Patent number: 4168326
    Abstract: Novel prosthesis parts of improved properties are obtained by providing a material as used for prostheses with an enamel or enamel-like coating and incorporating in said enamel layer, while in a viscous state, a bioactive material. Such prosthesis parts have a satisfactory adhesive strength and coefficient of expansion, are substantially free of pores, are highly corrosion resistant, and readily grow intimately and firmly together with the bone tissue without the use of bone cement.
    Type: Grant
    Filed: October 18, 1976
    Date of Patent: September 18, 1979
    Assignee: Ernst Leitz Wetzlar, GmbH
    Inventors: Heinz Broemer, Werner Adam, Friedhelm Hedrich