Patents by Inventor Takuya Tokiyama

Takuya Tokiyama 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).

  • Method for producing spheroidal graphite cast iron and vehicle component using said spheroidal graphite cast iron
    Patent number: 9556498
    Abstract: A method for producing spheroidal graphite cast iron having a specific final composition includes: subjecting a molten iron to a spheroidization treatment using a spheroidizing agent of an Fe—Si—Mg—Ca-based alloy containing no rare earth element; conducting an inoculation treatment using a first Fe—Si-based inoculant; and conducting a pouring inoculation treatment with a given amount of a second Fe—Si-based inoculant containing 45-75% of Si, 1-3% of Ca, and 15 ppm or less of Ba.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: January 31, 2017
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Takao Horiya, Tsukasa Baba, Takuya Tokiyama, Takashi Sato, Hiroshi Idei
  • Process for producing spheroidal-graphite cast iron, and spheroidal-graphite cast iron member obtained from said spheroidal-graphite cast iron
    Patent number: 9512498
    Abstract: A process for producing spheroidal graphite cast iron includes a spheroidization treatment, an inoculant treatment and a pouring inoculation treatment. A molten iron is subjected to the spheroidization treatment using a spheroidizing agent of an Fe—Si—Mg—Ca-based alloy which contains a given amount of Ba and contains substantially no rare-earth element.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: December 6, 2016
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Tsukasa Baba, Takao Horiya, Takuya Tokiyama, Takashi Sato, Hiroshi Idei, Yutaka Nishikawa, Masakazu Kitahara, Hidekazu Narita
  • PROCESS FOR PRODUCING SPHEROIDAL-GRAPHITE CAST IRON, AND SPHEROIDAL-GRAPHITE CAST IRON MEMBER OBTAINED FROM SAID SPHEROIDAL-GRAPHITE CAST IRON
    Publication number: 20140348694
    Abstract: A process for producing spheroidal graphite cast iron includes a spheroidization treatment, an inoculant treatment and a pouring inoculation treatment. A molten iron is subjected to the spheroidization treatment using a spheroidizing agent of an Fe—Si—Mg—Ca-based alloy which contains a given amount of Ba and contains substantially no rare-earth element.
    Type: Application
    Filed: December 19, 2012
    Publication date: November 27, 2014
    Inventors: Tsukasa Baba, Takao Horiya, Takuya Tokiyama, Takashi Sato, Hiroshi Idei, Yutaka Nishikawa, Masakazu Kitahara, Hidekazu Narita
  • METHOD FOR PRODUCING SPHEROIDAL GRAPHITE CAST IRON AND VEHICLE COMPONENT USING SAID SPHEROIDAL GRAPHITE CAST IRON
    Publication number: 20140271330
    Abstract: A method for producing spheroidal graphite cast iron having a specific final composition includes: subjecting a molten iron to a spheroidization treatment using a spheroidizing agent of an Fe—Si—Mg—Ca-based alloy containing no rare earth element; conducting an inoculation treatment using a first Fe—Si-based inoculant; and conducting a pouring inoculation treatment with a given amount of a second Fe—Si-based inoculant containing 45-75% of Si, 1-3% of Ca, and 15 ppm or less of Ba.
    Type: Application
    Filed: October 5, 2012
    Publication date: September 18, 2014
    Inventors: Takao Horiya, Tsukasa Baba, Takuya Tokiyama, Takashi Sato, Hiroshi Idei