TREA

Fujio Hayakawa

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  • Aichi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Process for producing a planar dimmer
    • Patent number 4,933,050
    • Issue date Jun 12, 1990
    • Toyoda Gosei Co., Ltd.
    • Toshiyasu Ito
    • G02 - OPTICS
  • Information Patent Grant

    Planar dimmer
    • Patent number 4,874,229
    • Issue date Oct 17, 1989
    • Toyoda Gosei Co., Ltd.
    • Toshiyasu Ito
    • G02 - OPTICS