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Yuichi Koyama

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  • Niwa-gun, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Gas sensor
    • Patent number 7,993,506
    • Issue date Aug 9, 2011
    • NGK Spark Plug Co., Ltd.
    • Yoshihiro Nakano
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Gas detector
    • Patent number 7,189,363
    • Issue date Mar 13, 2007
    • NGK Spark Plug Co., Ltd.
    • Norimasa Osawa
    • G01 - MEASURING TESTING

Patents Applicationslast 30 patents

  • Information Patent Application

    GAS SENSOR
    • Publication number 20080257732
    • Publication date Oct 23, 2008
    • NGK SPARK PLUG CO., LTD.
    • Yoshihiro NAKANO
    • G01 - MEASURING TESTING
  • Information Patent Application

    Gas detector
    • Publication number 20030235516
    • Publication date Dec 25, 2003
    • NGK SPARK PLUG CO., LTD.
    • Norimasa Osawa
    • G01 - MEASURING TESTING