Patents by Inventor Werner Zechner

Werner Zechner 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).

  • Punch and counter punch plates
    Patent number: 4880481
    Abstract: Punch and counter punch plates are fabricated from chromium containing alloys, essentially consisting of, each in percent by weight, carbon in the range of 0 to 1.1, silicon in a maximum of 1.0, manganese in a maximum of 1.5, chromium in the range of 11.0 to 17.5, molybdenum in the range of 0 to 1.5, nickel in the range of 0.35 to 10.0, copper in the range of 0 to 4.5, vanadium in the range of 0 to 0.5, cobalt in the range of 0 to 1.5, niobium in the range of 0 to 0.45, titanium in the range of 0 to 1.5, nitrogen in the range of 0 to 0.1, the remainder being iron and impurities resulting from the manufacturing conditions.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: November 14, 1989
    Assignee: Bohler Ges.m.b.H.
    Inventors: Werner J. Jerlich, Alfred Kugler, Hans Kaiserfeld, Anton Schulhofer, Werner Zechner