Patents by Inventor Tetsuji Doizaki

Tetsuji Doizaki 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).

  • Induction heater with a unit for preventing generation of sparks
    Patent number: 6285015
    Abstract: C-shaped inductors for induction heating a heated steel material that is carried via table rollers. Each C-shaped inductor includes a C-shaped iron core having a pair of legs facing each other by sandwiching a gap through which the heated steel material passes, and heating coils wound around the pair of legs of the C-shaped iron core. A ring-shaped iron core for restricting induced currents generated in the heated steel material is disposed near the C-shaped inductors, and the heated steel material passes through the gap of each C-shaped inductor.
    Type: Grant
    Filed: June 22, 2000
    Date of Patent: September 4, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tetsuji Doizaki, Kiyoshi Nakano, Hiroshi Sekine, Yoichi Motoyashiki, Manabu Sonobe