Patents by Inventor Yoshio Miyashita

Yoshio Miyashita 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).

  • Steel making by converter
    Patent number: 4308057
    Abstract: Steel making by a converter comprises blowing oxygen onto the surface of molten steel held in the converter and blowing agitating gases of 1/3 to 1/3000 of the amount of said oxygen thereinto from tuyeres provided at bottom of the converter, which number from 1 to 30 and are from 2 to 30 mm.phi. in inside diameter, thereby to effectively agitate the molten steel and make blowing reaction stabilized for purposes of increasing production and improving quality of the steel.
    Type: Grant
    Filed: August 4, 1980
    Date of Patent: December 29, 1981
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Shigeyuki Ono, Akichika Ozeki, Eiichi Sakamoto, Kiyomi Taguchi, Yoshio Miyashita
  • Apparatus for monitoring and controlling the level of the molten metal in the mold of a continuous casting machine
    Patent number: 4186792
    Abstract: There is disclosed a molten metal level monitoring and controlling apparatus for continuous casting machines which employs an eddy-current type distance measuring device for measuring the level of the molten metal in the mold of a continuous casting machine. The eddy-current type distance measuring device generates a molten metal level signal by detecting in a noncontact manner the distance between its detecting mechanism fixedly mounted in place just above the surface of the molten metal and the molten metal level.
    Type: Grant
    Filed: December 20, 1977
    Date of Patent: February 5, 1980
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Takeo Yamada, Seigo Ando, Yoshio Miyashita, Katsuhiko Murakami, Masahisa Tate, Kiyoshi Mizui
  • Method of treating molten slags in steel making process
    Patent number: 4102675
    Abstract: A method of regenerating molten slag remaining in a furnace or converter or the like after tapping of steel, by adding solid carbon and flux to the slag, blowing oxygen into the slag, heating to a temperature of more than 1500.degree. C and agitating. The regenerated slag can be controlled in composition to be most suitable for such ultimate uses as lime, cement, etc.
    Type: Grant
    Filed: July 11, 1977
    Date of Patent: July 25, 1978
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Yoshio Miyashita, Akira Masui, Kenzo Yamada, Kenji Takahashi