Patents by Inventor Naotake Ito

Naotake Ito 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).

  • Fe-Cr-Ni-Si shape memory alloys with excellent stress corrosion cracking resistance
    Patent number: 5244513
    Abstract: Ferrous group shape memory alloys consisting essentially of Cr: 16.0-21.0 wt %, Si: 3.0-7.0 wt % and Ni: 11.0-21.0 wt % and satisfying Ni wt %.gtoreq.[0.67.times.{Cr+1.2.times.(Si+Ti+Zr+Hf+V+Nb+Ta)}-] wt % and (Cr+Si) wt %.gtoreq.20 wt %, these ferrous-group shape-memory alloys having a corrosion resistance, a shape-memorizing properties, an intergranular corrosion resistance and a stress corrosion cracking resistance in nitric acid for nuclear fuel reprocessing plants and high-temperature, high-pressure water for light-water reactors.
    Type: Grant
    Filed: March 27, 1992
    Date of Patent: September 14, 1993
    Assignees: Mitsubishi Jukogyo Kabushiki Kaisha, NKK Corporation
    Inventors: Yoshikuni Kadoya, Toshio Yonezawa, Naotake Ito, Toru Inazumi, Yutaka Moriya, Haruo Suzuki, Katsumi Masamura, Takemi Yamada