Patents by Inventor Toshiyasu Onishi

Toshiyasu Onishi 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).

  • Method of electromagnetic stirring in continuous metal casting process
    Patent number: 4852635
    Abstract: A method of electromagnetically stirring molten metal in an unsolidified portion of a continuously cast strand by a magnetic field formed by applying alternating current to at least two exciting coils, the method comprising: supplying to one of the exciting coils a first alternating current of a frequency in the range of 1-60 Hz and to the other one of the exciting coils a second alternating current with a frequency difference in the range of 0.03-0.25 Hz from the first alternating current to form a varying composite magnetic field thereby to induce stirred movement of varying direction and intensity in the molten metal.
    Type: Grant
    Filed: November 8, 1984
    Date of Patent: August 1, 1989
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Toshiyasu Onishi, Kenzo Ayata, Hiroshi Takagi, Yasuo Suzuki, Yasuhiko Ohta, Takao Shiozawa, Koichi Fujiwara, Masakazu Itashiki