Masahiko Yamada

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Nagoya, JP

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Patents Grantslast 30 patents

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Oxygen sensor for preventing silicon poisoning
- Patent number 5,849,165
- Issue date Dec 15, 1998
- NGK Spark Plug Co. Ltd.
- Takao Kojima
- G01 - MEASURING TESTING
Information Patent Grant
Oxygen sensor element
- Patent number 5,538,612
- Issue date Jul 23, 1996
- NGK Spark Plug Co., Ltd.
- Takao Kojima
- G01 - MEASURING TESTING
Information Patent Grant
Oxygen-sensor element
- Patent number 5,443,711
- Issue date Aug 22, 1995
- NGK Spark Plug Co., Ltd.
- Takao Kojima
- G01 - MEASURING TESTING
Information Patent Grant
Method of producing oxygen sensor for air-fuel ratio control having...
- Patent number 5,326,597
- Issue date Jul 5, 1994
- NGK Spark Plug Co., Ltd.
- Toshiki Sawada
- G01 - MEASURING TESTING
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Oxygen sensor for air-fuel ratio control having a protective layer...
- Patent number 5,160,598
- Issue date Nov 3, 1992
- NGK Spark Plug Co., Ltd.
- Toshiki Sawada
- G01 - MEASURING TESTING
Information Patent Grant
Device for detecting concentration of oxygen in exhaust gas
- Patent number 4,584,086
- Issue date Apr 22, 1986
- NGK Spark Plug Co., Ltd.
- Nobuhiro Hayakawa
- G01 - MEASURING TESTING
Information Patent Grant
Method of manufacturing oxygen sensor
- Patent number 4,372,824
- Issue date Feb 8, 1983
- NGK Spark Plug Co., Ltd.
- Nobuhiro Toda
- G01 - MEASURING TESTING