Patents by Inventor Kouichi MURAO

Kouichi MURAO 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).

  • Deformed steel wire for protection tube of submarine cable, method for manufacturing same, and pressure-resistant layer
    Patent number: 9274298
    Abstract: There is provided a deformed steel wire includes, as a chemical component, by mass %; C: 0.30% to 1.10%, Si: 0.10% to 1.50%, and Mn: 0.20% to 1.50%, and the balance consists of Fe and unavoidable impurities, in which a metallographic structure is a ferrite-pearlite structure or a pearlite structure, integration degrees of a crystal orientation <110> in a longitudinal direction of a thickness center area and a surface area are in a range of 2.0 to 4.0, an absolute value of a difference in the integration degree between an inner surface and an outer surface of the surface area is 0.3 or less, an integration degree of a crystal orientation <100> in a thickness direction of the thickness center area is in a range of 1.2 to 3.8, and a dimensional accuracy index is in a range of 0.5 to 2.0.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: March 1, 2016
    Assignees: NIPPON STEEL & SUMITOMO METAL CORPORATION, Namitei Co., Ltd., OCC Corporation
    Inventors: Makoto Kosaka, Shouichi Ohashi, Seiki Nishida, Masatsugu Murao, Kouichi Murao, Ken Oyamada, Syunya Ikebata
  • DEFORMED STEEL WIRE FOR PROTECTION TUBE OF SUBMARINE CABLE, METHOD FOR MANUFACTURING SAME, AND PRESSURE-RESISTANT LAYER
    Publication number: 20150301297
    Abstract: There is provided a deformed steel wire includes, as a chemical component, by mass %; C: 0.30% to 1.10%, Si: 0.10% to 1.50%, and Mn: 0.20% to 1.50%, and the balance consists of Fe and unavoidable impurities, in which a metallographic structure is a ferrite-pearlite structure or a pearlite structure, integration degrees of a crystal orientation <110> in a longitudinal direction of a thickness center area and a surface area are in a range of 2.0 to 4.0, an absolute value of a difference in the integration degree between an inner surface and an outer surface of the surface area is 0.3 or less, an integration degree of a crystal orientation <100> in a thickness direction of the thickness center area is in a range of 1.2 to 3.8, and a dimensional accuracy index is in a range of 0.5 to 2.0.
    Type: Application
    Filed: October 3, 2013
    Publication date: October 22, 2015
    Applicants: NIPPON STEEL & SUMITOMO METAL CORPORATION, OCC Corporation, Namitei Co., Ltd.
    Inventors: Makoto KOSAKA, Shouichi OHASHI, Seiki NISHIDA, Masatsugu MURAO, Kouichi MURAO, Ken OYAMADA, Syunya IKEBATA