Patents by Inventor Tsuyoshi Noura

Tsuyoshi Noura 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).

  • Patent number: 9238857
    Abstract: A precipitation-strengthened Ni-based heat-resistant alloy of the present invention includes 0.03 wt % or less of C, 0.5 wt % or less of Mn, 0.01 wt % or less of P, 0.01 wt % or less of S, 2.0 to 3.0 wt % of Si, 23 to 30 wt % of Cr, 7.0 to 14.0 wt % of W, 10 to 20 wt % of Fe, and 40 to 60 wt % of Ni, wherein a total content of C, N, O, P and S is 0.01 wt % or less. A silicide is dispersed and precipitated and a grain size of a matrix austenite is controlled through a thermo-mechanical treatment. As a result, the precipitation-strengthened Ni-based heat-resistant alloy excellent in irradiation resistance, heat resistance and corrosion resistance can be obtained with a low cost.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: January 19, 2016
    Assignee: Kobe Steel, Ltd.
    Inventors: Kiyoshi Kiuchi, Kiyoyuki Shiba, Tsuyoshi Noura, Jumpei Nakayama
  • Publication number: 20130255843
    Abstract: A precipitation-strengthened Ni-based heat-resistant alloy of the present invention includes 0.03 wt % or less of C, 0.5 wt % or less of Mn, 0.01 wt % or less of P, 0.01 wt % or less of S, 2.0 to 3.0 wt % of Si, 23 to 30 wt % of Cr, 7.0 to 14.0 wt % of W, 10 to 20 wt % of Fe, and 40 to 60 wt % of Ni, wherein a total content of C, N, O, P and S is 0.01 wt % or less. A silicide is dispersed and precipitated and a grain size of a matrix austenite is controlled through a thermo-mechanical treatment. As a result, the precipitation-strengthened Ni-based heat-resistant alloy excellent in irradiation resistance, heat resistance and corrosion resistance can be obtained with a low cost.
    Type: Application
    Filed: May 29, 2013
    Publication date: October 3, 2013
    Inventors: Kiyoshi KIUCHI, Kiyoyuki Shiba, Tsuyoshi Noura, Jumpei Nakayama
  • Patent number: 6086361
    Abstract: A melt treatment apparatus is provided which obviates an increase in floorspace and in cost and has freedom from a danger of steam explosion and further can control melt discharging with reliability.The welt treatment apparatus 1 is constructed with a furnace body 8 for entry of a material 17 to be heated, a plasma torch 2 that generates a plasma arc 13 so as to melt the material, a melt discharge passage 3 arranged in the furnace body for discharging a hot melt 14 derived by melting the material with the use of the plasma torch, and cooling gas jet means 7 disposed in the melt discharge passage and jetting a cooling gas to cool the hot melt to thereby form a dam 12.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: July 11, 2000
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Yasuo Higashi, Katsuya Akiyama, Tsuyoshi Noura, Akiyoshi Yamane