Patents by Inventor Kusuo Nakada

Kusuo Nakada 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).

  • Magnetron comprising a radially magnetized permanent magnet and an axially magnetized permanent magnet
    Patent number: 3987333
    Abstract: In a magnetron comprising a cathode electrode, an anode cylinder including a plurality of vanes disposed about the cathode electrode for defining an interaction space, and a pair of permanent magnets contained in the anode cylinder for producing magnetic field in the interaction space, one permanent magnet is magnetized in the radial direction whereas the other is magnetized in the axial direction whereby the magnetic field distribution in the interaction space is made uniform.
    Type: Grant
    Filed: July 21, 1975
    Date of Patent: October 19, 1976
    Assignee: Hitachi, Ltd.
    Inventors: Kusuo Nakada, Yoshio Ishida