Patents by Inventor Klaus Zoltzer

Klaus Zoltzer 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).

  • Nickel-base superalloy
    Patent number: 5294239
    Abstract: In section bars and shaped bodies made of nickel-base superalloys having a structure consisting of columnar grains, a complete recrystallization cannot be effected unless the heating-up rate is kept below a maximum heating-up rate T.sub.max, which depends on the ratio V of one or more of the metal carbide-forming elements hafnium, niobium, tantalum, titanium and zirconium to one or both of the metal carbide-forming elements tungsten and molybdenum.
    Type: Grant
    Filed: May 6, 1991
    Date of Patent: March 15, 1994
    Assignee: PM Hochtemperatur-Metall GmbH
    Inventors: Klaus Zoltzer, Klaus Lempenauer, Hellmut Fischmeister