Patents by Inventor Gerd Weissman

Gerd Weissman 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: 4063938
    Abstract: Hard metal carbide alloys are produced by nitriding a mixture of finely divided refractory metals selected from group VI of the periodic table of elements, a refractory metal selected from group IV and V of the periodic table of elements and a metal selected from the iron group, under temperatures below 1250.degree. for a time less than 12 hours.
    Type: Grant
    Filed: March 27, 1975
    Date of Patent: December 20, 1977
    Inventor: Gerd Weissman