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Koji Hirai

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  • Aichi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method and apparatus for molding an insulator device
    • Patent number 6,153,140
    • Issue date Nov 28, 2000
    • Kabushiki Kaisha Tokai Rika Denki Seisakusho
    • Koji Hirai
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Multiple contact switch
    • Patent number 4,760,221
    • Issue date Jul 26, 1988
    • Kabushiki Kaisha Tokai Rika Denki Seisakusho
    • Hatsuyoshi Yoshida
    • H01 - BASIC ELECTRIC ELEMENTS