Patents by Inventor Terumasa Yamasaki

Terumasa Yamasaki 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).

  • Uniform magnetic field generator
    Patent number: 4931760
    Abstract: Magnetic field generators used in magnetic resonance imaging instruments (MRI) need an extremely uniform and wide magnetic field space. With the annulus of a field-generating annular magnet composed of a plurality of permanent magnet blocks arranged annularly, non-magnetic hold plates may be arranged in correspondence with each of the permanent magnet blocks, and field-regulating permanent magnet pieces may be fixed at stated positions of the hold plated, thereby obtaining a uniform magnetic field space.
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: June 5, 1990
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Junji Yamaguchi, Terumasa Yamasaki