TREA

Toshio Okumura

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  • Aichi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Oxygen sensor protected against contaminants
    • Patent number 4,883,643
    • Issue date Nov 28, 1989
    • NGK Spark Plug Co., Ltd.
    • Hisaharu Nishio
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Oxygen sensor
    • Patent number 4,741,816
    • Issue date May 3, 1988
    • NGK Spark Plug Co., Ltd.
    • Hisaharu Nishio
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Precombustion chamber with insulating means
    • Patent number 4,672,933
    • Issue date Jun 16, 1987
    • 501 NGK Spark Plug Co. Ltd.
    • Masato Taniguchi
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Gas sensor
    • Patent number 4,668,477
    • Issue date May 26, 1987
    • NGK Spark Plug Co., Ltd.
    • Hisaharu Nishio
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Oxygen sensor with heater
    • Patent number 4,507,191
    • Issue date Mar 26, 1985
    • NGK Spark Plug Co., Ltd.
    • Akio Ebizawa
    • G01 - MEASURING TESTING