Patents by Inventor Hirotoyo NAKASHIMA

Hirotoyo NAKASHIMA 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).

  • TiAl ALLOY MATERIAL AND TiAl INTERMEDIATE ALLOY MATERIAL
    Publication number: 20240124956
    Abstract: A TiAl alloy material containing: Al: 42.0 atomic % or more and 44.0 atomic % or less; Cu: 0.5 atomic % or more and 2.5 atomic % or less; and Nb: 3.0 atomic % or more and 7.0 atomic % or less, with the balance being Ti and unavoidable impurities, and lamellar grains have an average grain size of 20 ?m or more and 200 ?m or less.
    Type: Application
    Filed: October 10, 2023
    Publication date: April 18, 2024
    Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.), TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Takeo MIYAMURA, Masao TAKEYAMA, Hirotoyo NAKASHIMA
  • TIAL ALLOY FOR FORGING, TIAL ALLOY MATERIAL, AND METHOD FOR PRODUCING TIAL ALLOY MATERIAL
    Publication number: 20240043978
    Abstract: A TiAl alloy may be suitable for forging and may be used to produce a TiAl alloy material having excellent oxidation resistance, high-temperature creep strength, excellent hot forgeability, and can be subjected to die forging. The TiAl alloy may contain, in atomic percentage: Ti; Al in a range of from 42.0 to 43.6%; Cu in a range of from 0.5 to 2.0%; and Nb in a range of from 3.0 to 7.0%; and unavoidable impurities.
    Type: Application
    Filed: March 14, 2022
    Publication date: February 8, 2024
    Applicants: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.), TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Takeo MIYAMURA, Masao TAKEYAMA, Hirotoyo NAKASHIMA
  • TITANIUM ALUMINIDE ALLOY MATERIAL FOR HOT FORGING AND FORGING METHOD FOR TITANIUM ALUMINIDE ALLOY MATERIAL
    Publication number: 20220002854
    Abstract: A titanium aluminide alloy material for hot forging has a chemical composition including, by atom, aluminum of 38.0% or greater and 39.9% or less, niobium of 3.0% or greater and 5.0% or less, vanadium of 3.0% or greater and 4.0% or less, carbon of 0.05% or greater and 0.15% or less, and titanium and an inevitable impurity as a residue.
    Type: Application
    Filed: September 15, 2021
    Publication date: January 6, 2022
    Applicants: IHI Corporation, TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Keiji KUBUSHIRO, Yutaro OTA, Shin USUI, Masao TAKEYAMA, Hirotoyo NAKASHIMA
  • TITANIUM ALUMINIDE ALLOY MATERIAL FOR HOT FORGING, FORGING METHOD FOR TITANIUM ALUMINIDE ALLOY MATERIAL, AND FORGED BODY
    Publication number: 20210404042
    Abstract: A titanium aluminide alloy material for hot forging has a chemical composition including, by atom, aluminum of 43.0% or greater and 45.0% or less, niobium of 4.0% or greater and 6.0% or less, chromium of 1.5% or greater and 3.5% or less, and titanium and an inevitable impurity as a residue.
    Type: Application
    Filed: September 13, 2021
    Publication date: December 30, 2021
    Applicants: IHI Corporation, TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Keiji KUBUSHIRO, Yutaro OTA, Satoshi TAKAHASHI, Masao TAKEYAMA, Hirotoyo NAKASHIMA, Ryosuke YAMAGATA