Patents by Inventor Saburou Wakita

Saburou Wakita 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).

  • Casting apparatus and method therefor
    Patent number: 7210516
    Abstract: A casting apparatus including a die that contains a molten metal that is poured via an opening section disposed above the die. The casting apparatus also includes a heater disposed above the die, and a gas supplying structure for supplying an inter gas to a surface of the molten metal. The casting apparatus further includes a lid disposed between the surface of the molten metal and the heater, and a lid moving structure for moving the lid to the die relatively so as to control the opening amount of the opening section above the die.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: May 1, 2007
    Assignees: Mitsubishi Materials Corporation, Japan Electric Metals Corporation, Limited
    Inventors: Saburou Wakita, Junichi Sasaki, Yuuji Ishiwari, Kouji Tsuzukihashi
  • Casting apparatus and method therefor
    Publication number: 20040050522
    Abstract: A casting apparatus comprises a die 2 which contains a molten metal which is poured via an opening section which is disposed above the die, a heater which is disposed above the die, a gas supplying structure for supplying an inert gas to a surface of the molten metal, a lid 6 which is disposed between the surface of the molten metal and the heater, and a lid moving structure for moving the lid to the die relatively so as to control the opening amount of the opening section above the die.
    Type: Application
    Filed: July 24, 2003
    Publication date: March 18, 2004
    Applicants: MITSUBISHI MATERIALS CORPORATION, Japan Electric Metals Corporation, Limited
    Inventors: Saburou Wakita, Junichi Sasaki, Yuuji Ishiwari, Kouji Tsuzukihashi
  • High strength spongy sintered metal composite sheet and production method thereof
    Patent number: 6423422
    Abstract: A high strength spongy sintered metal composite sheet comprising a porous spongy sintered metal layer having continuous holes, and a high strength sintered, dense metal reinforcing layer having a porosity smaller than the porosity of the spongy sintered metal layer, laminated thereon, wherein the sintered, dense metal reinforcing layer has a thickness of 0.5-30% thickness with respect to the entire high strength spongy sintered metal composite sheet.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: July 23, 2002
    Assignee: Mitsubishi Materials Corporation
    Inventors: Masahiro Wada, Yoshitaka Mayuzumi, Koji Hoshino, Saburou Wakita
  • HIGH STRENGTH SPONGY SINTERED METAL COMPOSITE SHEET AND PRODUCTION METHOD THEREOF
    Publication number: 20010055694
    Abstract: A high strength spongy sintered metal composite sheet comprising a porous spongy sintered metal layer having continuous holes, and a high strength sintered, dense metal reinforcing layer having a porosity smaller than the porosity of the spongy sintered metal layer, laminated thereon, wherein the sintered, dense metal reinforcing layer has a thickness of 0.5-30% thickness with respect to the entire high strength spongy sintered metal composite sheet.
    Type: Application
    Filed: April 8, 1999
    Publication date: December 27, 2001
    Inventors: MASAHIRO WADA, YOSHITAKA MAYUZUMI, KOJI HOSHINO, SABUROU WAKITA
  • Columnar crystalline Ni-base heat-resistant alloy having high resistance to intergranular corrosion at high temperature, method of producing the alloy, large-size article, and method of producing large-size article from the alloy
    Patent number: 6322643
    Abstract: An Ni-base heat resistant alloy, has a composition which contains, by weight, Cr: from 12.0 to 14.3%, Co: from 8.5 to 11.0%, Mo: from 1.0 to 3.5%, W: from 3.5 to 6.2%, Ta: from 3.0 to 5.5%, Al: from 3.5 to 4.5%, Ti: from 2.0 to 3.2%, C: from 0.04 to 0.12%, B: from 0.005 to 0.05%, and the balance substantially Ni and inevitable impurities. A large-size casting, as well as a large-size turbine blade, having a columnar crystalline Ni-base heat-resistant alloy formed from the Ni-base heat-resistant alloy, have sound cast surfaces and a sound internal structure.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: November 27, 2001
    Assignees: Mitsubishi Materials Corporation, Mitsubishi Heavy Industries, Ltd.
    Inventors: Akira Mitsuhashi, Michi Misumi, Saburou Wakita, Hisataka Kawai, Kouji Takahashi, Ikuo Okada
  • Columnar crystalline Ni-based heat-resistant alloy having high resistance to intergranular corrosion at high temperature, method of producing the alloy, large-size article, and method of producing large-size article from the alloy
    Patent number: 6036791
    Abstract: An Ni-base heat resistant alloy, has a composition which contains, by weight, Cr: from 12.0 to 14.3%, Co: from 8.5 to 11.0%, Mo: from 1.0 to 3.5%, W: from 3.5 to 6.2%, Ta: from 3.0 to 5.5%, Al: from 3.5 to 4.5%, Ti: from 2.0 to 3.2%, C: from 0.04 to 0.12%, B: from 0.005 to 0.05%, and the balance substantially Ni and inevitable impurities. A large-size casting, as well as a large-size turbine blade, having a columnar crystalline Ni-base heat-resistant alloy formed from the Ni-base heat-resistant alloy, have sound cast surfaces and a sound internal structure.
    Type: Grant
    Filed: January 23, 1998
    Date of Patent: March 14, 2000
    Assignees: Mitsubishi Materials Corporation, Mitsubishi Heavy Industries, Ltd.
    Inventors: Akira Mitsuhashi, Michi Misumi, Saburou Wakita