Patents by Inventor Ei KIMURA

Ei KIMURA 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).

  • Aircraft engine shaft comprising a maraging steel having a tensile strength of 2300MPa or more
    Patent number: 9506125
    Abstract: The present invention provides a maraging steel containing: 0.10?C?0.30 mass %, 6.0?Ni?9.4 mass %, 11.0?Co?20.0 mass %, 1.0?Mo?6.0 mass %, 2.0?Cr?6.0 mass %, 0.5?Al?1.3 mass %, and Ti?0.1 mass %, with the balance being Fe and unavoidable impurities, and satisfying 1.00?A?1.08, in which A is 0.95+0.35×[C]?0.0092×[Ni]+0.011×[Co]?0.02×[Cr]?0.001×[Mo], where [C] indicates a content (mass %) of C, [Ni] indicates a content (mass %) of Ni, [Co] indicates a content (mass %) of Co, [Cr] indicates a content (mass %) of Cr, and [Mo] indicates a content (mass %) of Mo, respectively. The maraging steel has a tensile strength of 2,300 MPa or more and is also excellent in the toughness/ductility and fatigue characteristics.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: November 29, 2016
    Assignees: DAIDO STEEL CO., LTD., IHI CORPORATION
    Inventors: Shigeki Ueta, Hiroyuki Takabayashi, Ei Kimura, Yuta Tanaka, Satoshi Takahashi, Isao Nakanowatari, Kota Sasaki, Koshiro Yamane, Satoru Yusa
  • MARAGING STEEL
    Publication number: 20130327446
    Abstract: The present invention provides a maraging steel containing: 0.10?C?0.30 mass %, 6.0?Ni?9.4 mass %, 11.0?Co?20.0 mass %, 1.0?Mo?6.0 mass %, 2.0?Cr?6.0 mass %, 0.5?Al?1.3 mass %, and Ti?0.1 mass %, with the balance being Fe and unavoidable impurities, and satisfying 1.00?A?1.08, in which A is 0.95+0.35×[C]?0.0092×[Ni]+0.011×[Co]?0.02×[Cr]?0.001×[Mo], where [C] indicates a content (mass %) of C, [Ni] indicates a content (mass %) of Ni, [Co] indicates a content (mass %) of Co, [Cr] indicates a content (mass%) of Cr, and [Mo] indicates a content (mass%) of Mo, respectively, The maraging steel has a tensile strength of 2,300 MPa or more and is also excellent in the toughness/ductility and fatigue characteristics.
    Type: Application
    Filed: June 5, 2013
    Publication date: December 12, 2013
    Applicants: IHI CORPORATION, DAIDO STEEL CO., LTD.
    Inventors: Shigeki UETA, Hiroyuki TAKABAYASHI, Ei KIMURA, Yuta TANAKA, Satoshi TAKAHASHI, Isao NAKANOWATARI, Kota SASAKI, Koshiro YAMANE, Satoru YUSA