Patents by Inventor Minao Ito

Minao Ito 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).

  • Process for refining a molten metal
    Patent number: 4371392
    Abstract: Refining method of molten metal which employs a refining apparatus provided with a tiltable refining vessel, a tuyere formed therein for blowing inert gas and/or flux or further sometimes additive alloy component(s), with the aid of inert gas into the molten metal, and a suitable number of electrodes for heating the molten metal and flux, for the purpose of performing a first refining process of carrying out the heating of the molten metal and the flux with the electrodes and a second refining process of tilting the vessel for blowing into the molten metal insert gas and others from the tuyere, whereby harmful or unnecessary metallic and/or non-metallic impure components can be removed for improving the quality of the article.
    Type: Grant
    Filed: July 20, 1981
    Date of Patent: February 1, 1983
    Assignee: Daido Tokishuko Kabushiki Kaisha
    Inventors: Kazumasa Hasegawa, Minao Ito, Saburo Sugiura, Kiyoichi Yamano, Shizunori Hayakawa
  • Process for refining a molten metal and an apparatus therefor
    Patent number: 4308415
    Abstract: Refining method of molten metal which employs a refining apparatus provided with a tiltable refining vessel, a tuyere formed therein for blowing inert gas and/or flux or further sometimes additive alloy component(s), with the aid of inert gas into the molten metal, and a suitable number of electrodes for heating the molten metal and flux, for the purpose of performing a first refining process of carrying out the heating of the molten metal and the flux with the electrodes and a second refining process of tilting the vessel for blowing into the molten metal inert gas and others from the tuyere, whereby harmful or unnecessary metallic and/or non-metallic impure components can be removed for improving the quality of the article.
    Type: Grant
    Filed: December 5, 1979
    Date of Patent: December 29, 1981
    Assignee: Daido Tokushuko Kabushiki Kaisha
    Inventors: Kazumasa Hasegawa, Minao Ito, Saburo Sugiura, Kiyoichi Yamano, Shizunori Hayakawa