Patents by Inventor Tadayoshi Kikko

Tadayoshi Kikko 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).

  • IRON-BASED MIXTURE POWDER FOR SINTERING AND IRON-BASED SINTERED ALLOY
    Publication number: 20130152735
    Abstract: There is provided an iron-based mixture powder for sintering, as well as an iron-based sintered alloy using same, that are capable of reducing the cutting resistance of the iron-based sintered alloy and of mitigating the shortening of cutting tool life even when a metal fluoride powder is used. The iron-based mixture powder for sintering comprises an iron-based powder, a graphite powder, a hard powder that is harder than the iron-based powder, and a metalfluoride powder. With respect to particle asperity as expressed by the following equation, particle asperity=(perimeter of a section of a particle)2/(sectional area of the section×4Pi), the particle asperity of the metal fluoride powder is within the range of 2 to 5.
    Type: Application
    Filed: August 29, 2011
    Publication date: June 20, 2013
    Applicants: FINE SINTER CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kimihiko Ando, Tadayoshi Kikko, Satomi Yamada
  • HARD PARTICLES FOR BLENDING IN SINTERED ALLOY, WEAR-RESISTANT IRON-BASED SINTERED ALLOY CONTAINING HARD PARTICLES, VALVE SEAT FORMED OF SINTERED ALLOY, AND PROCESS FOR MANUFACTURING HARD PARTICLES
    Publication number: 20120304821
    Abstract: Hard particles for blending as a starting material in a sintered alloy contain 20 to 40 mass % of molybdenum, 0.5 to 1.0 mass % of carbon, 5 to 30 mass % of nickel, 1 to 10 mass % of manganese, 1 to 10 mass % of chromium, 5 to 30 mass % of cobalt, 0.05 to 2 mass % of yttrium, and the balance being inadvertent impurities and iron.
    Type: Application
    Filed: October 13, 2010
    Publication date: December 6, 2012
    Applicants: FINE SINTER CO., LTD, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kimihiko Ando, Tadayoshi Kikko, Yusaku Yoshida
  • Insulation film, powder for magnetic core and powder magnetic core and processes for producing the same
    Patent number: 7029769
    Abstract: An insulation film whose requisite constituent elements are first elements and a second element. The first elements include B, P, O and Fe. The second element can generate cations whose hexa-coordinated ion radius, defined by Shannon, R. D., is 0.073 nm or more, and which are bivalent or more. Since the second element having a large ion radius is incorporated into network formers made from the first elements, it is possible to improve the heat resistance of the insulation film.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: April 18, 2006
    Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kabushiki Kaisha, Finesinter Co., Ltd.
    Inventors: Shin Tajima, Takeshi Hattori, Mikio Kondoh, Kiyoshi Higashiyama, Hidefumi Kishimoto, Masaki Sugiyama, Tadayoshi Kikko
  • Insulation film, powder for magnetic core and powder magnetic core and processes for producing the same
    Publication number: 20030230362
    Abstract: An insulation film whose requisite constituent elements are first elements and a second element. The first elements include B, P, O and Fe. The second element can generate cations whose hexa-coordinated ion radius, defined by Shannon, R. D., is 0.073 nm or more, and which are bivalent or more. Since the second element having a large ion radius is incorporated into network formers made from the first elements, it is possible to improve the heat resistance of the insulation film.
    Type: Application
    Filed: March 18, 2003
    Publication date: December 18, 2003
    Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA, FINESINTER CO., LTD.
    Inventors: Shin Tajima, Takeshi Hattori, Mikio Kondoh, Kiyoshi Higashiyama, Hidefumi Kishimoto, Masaki Sugiyama, Tadayoshi Kikko