Patents by Inventor Masahide Tsuno

Masahide Tsuno 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 producing low-carbon chromium-containing steel
    Patent number: 5547489
    Abstract: In the production of stainless steel it is aimed at to depress the highest temperature reaching during refining the molten steel with keeping the necessary tapping temperature so as to prolong the life of refractory materials of the refining furnace. After carrying out decarburization treatment under atmospheric pressure in a refining furnace by blowing an oxygen-containing gas into molten steel, further decarburization of the molten steel and reduction of chromium oxides is carried out under stirring by blowing a non-oxidizing gas under a reduced pressure, and then, reducing agent is charged into the furnace to reduce chromium oxides under keeping the reduced pressure.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: August 20, 1996
    Assignee: Daido Tokushuko Kabushiki Kaisha
    Inventors: Yoshio Inagaki, Motoshi Shinkai, Masahide Tsuno, Akihiro Nagatani