TREA

Hirotoshi Hagiwara

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  • Machida, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Thermionic cathode structure
    • Patent number 4,878,866
    • Issue date Nov 7, 1989
    • Denki Kagaku Kogyo Kabushiki Kaisha
    • Yoshiharu Mori
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Charged particle emission source structure
    • Patent number 4,721,878
    • Issue date Jan 26, 1988
    • Denki Kagaku Kogyo Kabushiki Kaisha
    • Hirotoshi Hagiwara
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electron gun for brightness
    • Patent number 4,591,754
    • Issue date May 27, 1986
    • Denki Kagaku Kogyo Kabushiki Kaisha
    • Hirotoshi Hagiwara
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Thermionic emission cathode and preparation thereof
    • Patent number 4,482,839
    • Issue date Nov 13, 1984
    • Denki Kagaku Kogyo Kabushiki Kaisha
    • Tetsuya Wada
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Thermionic emission cathode
    • Patent number 4,482,838
    • Issue date Nov 13, 1984
    • Denki Kagaku Kogyo Kabushiki Kaisha
    • Masaji Ishii
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Thermionic cathode supporting device
    • Patent number 4,311,941
    • Issue date Jan 19, 1982
    • Denki Kagaku Kogyo Kabushiki Kaisha
    • Hideo Hiraoka
    • H01 - BASIC ELECTRIC ELEMENTS