TREA

Hideo Hiraoka

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  • Machida, JP
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Patents Grantslast 30 patents

  • 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
    • 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
  • Information Patent Grant

    Method for manufacturing thermionic cathode
    • Patent number 4,168,565
    • Issue date Sep 25, 1979
    • Denki Kagaku Kogyo Kabushiki Kaisha
    • Masaji Ishii
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Thermionic cathode
    • Patent number 4,137,476
    • Issue date Jan 30, 1979
    • Denki Kagaku Kogyo Kabushiki Kaisha
    • Masaji Ishii
    • H01 - BASIC ELECTRIC ELEMENTS