Patents by Inventor Satoru Iijima

Satoru Iijima 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).

  • Apparatus for producing iron carbide
    Patent number: 6071468
    Abstract: An apparatus and method of producing iron carbide of predetermined quality is disclosed. The method of producing iron carbide (Fe.sub.3 C) comprises reducing and carburizing an iron-containing raw material containing iron oxides (e.g., hematite) or iron hydroxides as main components, wherein the raw material is partially reduced to a reduction ratio of 50 to 65% by a gas containing mainly hydrogen in a first stage of the reaction process, then the partially reduced raw material is further reduced and carburized with a gas containing mainly hydrogen and methane in a second stage of the reaction process to provide iron carbide.
    Type: Grant
    Filed: April 30, 1998
    Date of Patent: June 6, 2000
    Assignees: Kawasaki Jukogyo Kabushiki Kaisha, Mitsubishi Corporation
    Inventors: Torakatsu Miyashita, Yoshio Uchiyama, Eiji Inoue, Junya Nakatani, Teruyuki Nakazawa, Satoru Iijima
  • Method for producing iron carbide
    Patent number: 5837031
    Abstract: An apparatus and method of producing iron carbide of predetermined quality is disclosed. The method of producing iron carbide (Fe.sub.3 C) comprises reducing and carburizing an iron-containing raw material containing iron oxides (e.g., hematite) or iron hydroxides as main components, wherein the raw material is partially reduced to a reduction ratio of 50 to 65% by a gas containing mainly hydrogen in a first stage of the reaction process, then the partially reduced raw material is further reduced and carburized with a gas containing mainly hydrogen and methane in a second stage of the reaction process to provide iron carbide.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: November 17, 1998
    Assignees: Kawasaki Jukogyo Kabushiki Kaisha, Mitsubishi Corporation
    Inventors: Torakatsu Miyashita, Yoshio Uchiyama, Eiji Inoue, Junya Nakatani, Teruyuki Nakazawa, Satoru Iijima