Patents by Inventor Ryoichi Takahata

Ryoichi Takahata 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).

  • Apparatus and method for measuring repulsive displacement and repulsive force characteristics of a superconductor with respect to a magnet
    Patent number: 5111140
    Abstract: Characteristics of a superconductor such as a repulsive displacement of a superconductor against a magnet or a rotational resistance of the superconductor due to flux-pinning in the superconductor are measured by supporting the superconductor in a non-contact mode; disposing a magnet at a position opposite to the superconductor; and moving the superconductor toward the magnet relatively or increasing the magnetic force of the magnet. The measurement may be carried out while the superconductor is applied with a load or is rotating.
    Type: Grant
    Filed: March 7, 1990
    Date of Patent: May 5, 1992
    Assignee: Koyo Seiko Co., Ltd.
    Inventor: Ryoichi Takahata