Patents by Inventor Tutomu Sakakibara

Tutomu Sakakibara 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).

  • Patent number: 5659278
    Abstract: A superconducting magnet device and magnetizing device for superconductor including a coil provided around the superconductor; a current supply line connected to the coil and a power source and supplying a pulse current from the power source to the coil; and a refrigerant container controlled to a superconducting transition temperature or below, the coil arranged in the refrigerant container, the current supply line provided within refrigerant pipes connecting to the refrigerant container, its applied instrument, and a magnetizing method for superconductor including cooling the interior of the refrigerant container down to the superconducting transition temperature or below; supplying a pulse current to the coil for generating a magnetic field by the coil; and magnetizing the superconductor.
    Type: Grant
    Filed: January 6, 1995
    Date of Patent: August 19, 1997
    Assignee: Imra Material R&D Co., Ltd.
    Inventors: Yousuke Yanagi, Shintaro Harada, Ryohei Yabuno, Tetsuo Oka, Yoshitaka Ito, Tutomu Sakakibara
  • Patent number: 5581135
    Abstract: A superconducting motor comprising an armature provided on a ro tative shaft, magnet portions disposed opposite to said armature, coolant containers for containing said magnet portions and coolant, coolant pipes connected to said coolant containers for supplying the coolant, wherein each of said magnet portions comprises a superconductor and a magnetizing coil wound around it and wherein lead wires for supplying a pulse current for magnetization are connected to said magnetizing coils.
    Type: Grant
    Filed: September 12, 1994
    Date of Patent: December 3, 1996
    Assignee: IMRA Material R & D Co., Ltd.
    Inventors: Yoshitaka Ito, Yousuke Yanagi, Tetsuo Oka, Ryohei Yabuno, Shintaro Harada, Tutomu Sakakibara