Patents by Inventor Ryoichi Takahasi

Ryoichi Takahasi 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 manufacturing a gradient magnetic field coil assembly of an MRI apparatus
    Patent number: 5409558
    Abstract: Saddle coils are manufactured by placing wires in grooves formed in a first mold, so that the spatial arrangement of the saddle coils are determined by the positions of the grooves. This enables the wires to be precisely located in predetermined positions and assures a precise spatial arrangement of the saddle coils. Further, the wire is held by guides to form a solenoid coil. With this arrangement, high positional accuracies of the saddle coils and the solenoid coil are obtained, improving the detecting accuracy of the slice position of an object to be examined.
    Type: Grant
    Filed: June 8, 1994
    Date of Patent: April 25, 1995
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Ryoichi Takahasi, Yuzo Yoshida, Daihachirou Tsuruno