TREA

Masahide Kitamura

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Portable gas alarm device
    • Patent number 6,744,373
    • Issue date Jun 1, 2004
    • Riken Keiki Co., Ltd.
    • Junichi Koyano
    • G08 - SIGNALLING
  • Information Patent Grant

    Portable gas detector and its cradle
    • Patent number 6,606,897
    • Issue date Aug 19, 2003
    • Riken Keiki Co., Ltd.
    • Juniti Koyano
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Portable gas detector-alarm
    • Patent number D447974
    • Issue date Sep 18, 2001
    • Riken Keiki Co., Ltd.
    • Juniti Koyano
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Wrist watch type gas measuring device
    • Patent number D403603
    • Issue date Jan 5, 1999
    • Riken Keiki Co., Ltd.
    • Haruhiko Kondo
    • D10 - Measuring, testing, or signalling instruments

Patents Applicationslast 30 patents