Patents by Inventor Eisyo Nosaka

Eisyo Nosaka 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).

  • Cathode ray tube used as light source
    Patent number: 4344017
    Abstract: The disclosed cathode ray tube for use as a light source has an electron gun including a first, a second and third grid electrodes similar to conventional three electrode electron guns but the axial length of the second grid electrode is adjusted to form a bipotential electron lens with the third grid electrode. An electron beam emitted from a cathode electrode is focussed by the electron lens and then diverged until it reaches an associated phosphor screen. The phosphor screen is luminesced with a desired diameter by the diverged electron beam.
    Type: Grant
    Filed: May 7, 1980
    Date of Patent: August 10, 1982
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Eisyo Nosaka