Patents by Inventor Yoko Yamabe

Yoko Yamabe 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).

  • Iridium-containing nickel-base superalloy
    Patent number: 6494971
    Abstract: An iridium-containing nickel-base superalloy which has an orderly arrayed allow structure to be strengthened by precipitation and contains iridium dissolved in the &ggr; and &ggr;′ phases to be strengthened by solid solution, thus being improved in high-temperature strength and resistance to high-temperature corrosion.
    Type: Grant
    Filed: June 17, 1999
    Date of Patent: December 17, 2002
    Assignee: National Research Institute for Metals
    Inventors: Toshiharu Kobayashi, Yutaka Koizumi, Hideyuki Murakami, Yoshikazu Ro, Yoko Yamabe, Shizuo Nakazawa, Hiroshi Harada, Toshihiro Yamagata
  • Refractory superalloys
    Patent number: 6071470
    Abstract: Refractory superalloys consist essentially of a primary constituent selected from the group consisting of iridium, rhodium, and a mixture thereof, and one or more additive elements selected from the group consisting of niobium, tantalum, hafnium, zirconium, uranium, vanadium, titanium and aluminum, and the superalloys having a microstructure containing an FCC-type crystalline structure phase and an L1.sub.2 -type crystalline structure phase are precipitated. Preferably the amount of additive element(s) is 2 to 22 atom %.
    Type: Grant
    Filed: March 15, 1996
    Date of Patent: June 6, 2000
    Assignee: National Research Institute For Metals
    Inventors: Yutaka Koizumi, Yoko Yamabe, Yoshikazu Ro, Tomohiro Maruko, Shizuo Nakazawa, Hideyuki Murakami, Hiroshi Harada