TREA

Shinpei Hirokawa

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  • Gunma, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electron gun and a method for using the same
    • Patent number 6,903,499
    • Issue date Jun 7, 2005
    • Denki Kagaku Kogyo Kabushiki Kaisha
    • Yoshinori Terui
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Gallium ion source
    • Patent number 6,509,570
    • Issue date Jan 21, 2003
    • Denki Kagaku Kogyo Kabushiki Kaisha
    • Shinpei Hirokawa
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents