Patents by Inventor Tomoo Isawa

Tomoo Isawa 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).

  • Refining agent and refining method
    Publication number: 20060096416
    Abstract: A refining agent containing Al, MgO and CaO as main components, wherein dolomite is a MgO source and a CaO source. When the refining agent is supplied into molten iron, Mg vapor is produced due to a reaction in the molten iron, and causes a refining reaction by the Mg vapor.
    Type: Application
    Filed: December 14, 2005
    Publication date: May 11, 2006
    Applicant: JFE Steel Corporation
    Inventors: Yoshie Nakai, Takeshi Murai, Hidetoshi Matsuno, Yoshiteru Kikuchi, Kenji Takahashi, Yoichi Nimura, Hiroshi Shimizu, Tomoo Isawa, Takeshi Kawashima, Tatsuya Okamura
  • Refining agent and refining method
    Publication number: 20050257644
    Abstract: A refining agent contains Al, MgO, and CaO as main components, and uses dolomite as a MgO source and CaO source. When the refining agent is supplied into molten iron, it produces Mg vapor due to a reaction in the molten iron, and causes a refining reaction by the Mg vapor.
    Type: Application
    Filed: September 14, 2001
    Publication date: November 24, 2005
    Applicant: NKK CORPORATION
    Inventors: Yoshie Nakai, Takeshi Murai, Hidetoshi Matsuno, Yoshiteru Kikuchi, Kenji Takahashi, Yoichi Nimura, Hiroshi Shimizu, Tomoo Isawa, Takeshi Kawashima, Tatsuya Okamura
  • Casting process with forced and controlled vortex at sprue intake
    Patent number: 5526868
    Abstract: A casting process with a forced and controlled vortex at sprue intake comprising imposing rotating motion to molten metal in a pouring basin on a casting mold to create a vortex of molten metal while introducing the molten metal into a cavity, and causing the vortex of molten metal to flow into a sprue along an inner wall thereof so as to create a central vortex core in the molten metal in the sprue while the molten metal is being poured into the sprue.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: June 18, 1996
    Assignees: John Campbell, NKK Corporation
    Inventors: John Campbell, Tomoo Isawa