Patents by Inventor Masahiko TEZUKA

Masahiko TEZUKA 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).

  • Emitter including a zigzag current path and rib portions, and X-ray tube
    Patent number: 10593508
    Abstract: According to one embodiment, an emitter comprise a base portion including an electron emission surface from which electrons are emitted, a pair of leg portions applying a voltage to the electron emission surface, and a rib portion formed by bending an edge of the base portion to a side opposite to the electron emission surface, on at least a part of an outline of the electron emission surface.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: March 17, 2020
    Assignee: Canon Electron Tubes & Devices Co., Ltd.
    Inventors: Masataka Ueki, Masahiko Tezuka
  • X-ray tube assembly
    Patent number: 9847207
    Abstract: According to one embodiment, an X-ray tube assembly includes a cathode includes a first non-magnetic metal member having high electrical conductivity, an anode target includes a second non-magnetic metal member having high electrical conductivity, a vacuum envelope having depressed portion depressed, and a first magnetic deflector provided outside the vacuum envelope, includes first magnetic pole pair generating the alternating magnetic field, the first magnetic pole pair being provided in close vicinity to a wall surface of the depressed portion.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: December 19, 2017
    Assignee: Toshiba Electron Tubes & Devices Co., Ltd.
    Inventors: Masahiko Tezuka, Hidero Anno
  • EMITTER AND X-RAY TUBE
    Publication number: 20170287670
    Abstract: According to one embodiment, an emitter comprise a base portion including an electron emission surface from which electrons are emitted, a pair of leg portions applying a voltage to the electron emission surface, and a rib portion formed by bending an edge of the base portion to a side opposite to the electron emission surface, on at least a part of an outline of the electron emission surface.
    Type: Application
    Filed: March 30, 2017
    Publication date: October 5, 2017
    Applicant: Toshiba Electron Tubes & Devices Co., Ltd.
    Inventors: Masataka UEKI, Masahiko Tezuka
  • X-RAY TUBE ASSEMBLY
    Publication number: 20160172149
    Abstract: According to one embodiment, an X-ray tube assembly includes a cathode includes a first non-magnetic metal member having high electrical conductivity, an anode target includes a second non-magnetic metal member having high electrical conductivity, a vacuum envelope having depressed portion depressed, and a first magnetic deflector provided outside the vacuum envelope, includes first magnetic pole pair generating the alternating magnetic field, the first magnetic pole pair being provided in close vicinity to a wall surface of the depressed portion.
    Type: Application
    Filed: December 4, 2015
    Publication date: June 16, 2016
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Electron Tubes & Devices Co., Ltd.
    Inventors: Masahiko TEZUKA, Hidero ANNO