TREA

Masaki Maruyama

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  • Machida, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Analog fire sensor
    • Patent number 4,727,359
    • Issue date Feb 23, 1988
    • Hochiki Corp.
    • Sadataka Yuchi
    • G08 - SIGNALLING
  • Information Patent Grant

    Fire sensing system protected from noise factors
    • Patent number 4,319,231
    • Issue date Mar 9, 1982
    • Hochiki Corporation
    • Masaki Maruyama
    • G08 - SIGNALLING
  • Information Patent Grant

    Fire detecting system
    • Patent number 4,300,099
    • Issue date Nov 10, 1981
    • Hochiki Corporation
    • Masaki Maruyama
    • G08 - SIGNALLING
  • Information Patent Grant

    Ion type smoke sensor
    • Patent number 4,234,877
    • Issue date Nov 18, 1980
    • Hochiki Corporation
    • Masaki Maruyama
    • G08 - SIGNALLING