TREA

Yoshihito Hirai

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  • Odawara, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Smoke sensor
    • Patent number 5,502,434
    • Issue date Mar 26, 1996
    • Hockiki Kabushiki Kaisha
    • Osami Minowa
    • G08 - SIGNALLING
  • Information Patent Grant

    Highly sensitive smoke detector
    • Patent number 4,914,425
    • Issue date Apr 3, 1990
    • Hochiki Corporation
    • Yoshinori Kaminaka
    • G08 - SIGNALLING