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Masahiro Ishikawa
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Aichi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Dielectric elastomer drive sensor system and sheet
Patent number
11,213,133
Issue date
Jan 4, 2022
Zeon Corporation
Seiki Chiba
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Method of making a spark plug
Patent number
6,923,699
Issue date
Aug 2, 2005
NGK Spark Plug Co., Ltd.
Yoshihiro Matsubara
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Spark plug
Patent number
6,864,623
Issue date
Mar 8, 2005
NGK Spark Plug Co., Ltd.
Masahiro Ishikawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Ion current detector device for use in an internal combustion engine
Patent number
5,734,094
Issue date
Mar 31, 1998
NGK Spark Plug Co., Ltd.
Yoshihiro Matsubara
G01 - MEASURING TESTING
Information
Patent Grant
Device of estimating heat resistivity for a spark plug and a method...
Patent number
5,521,509
Issue date
May 28, 1996
NGK Spark Plug Co., Ltd.
Masahiro Ishikawa
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Patents Applications
last 30 patents
Information
Patent Application
DIELECTRIC ELASTOMER DRIVE SENSOR SYSTEM AND SHEET
Publication number
20210022510
Publication date
Jan 28, 2021
ZEON CORPORATION
Seiki CHIBA
B60 - VEHICLES IN GENERAL
Information
Patent Application
Spark plug
Publication number
20040012318
Publication date
Jan 22, 2004
NGK SPARK PLUG CO., LTD.
Masahiro Ishikawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Method of making a spark plug
Publication number
20030181121
Publication date
Sep 25, 2003
NGK SPARK PLUG CO., LTD.
Yoshihiro Matsubara
H01 - BASIC ELECTRIC ELEMENTS