Ryuma Kawachi

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Aichi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Spark plug for internal combustion engine
- Patent number 8,970,097
- Issue date Mar 3, 2015
- NGK Spark Plug Co., Ltd.
- Yuichi Yamada
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
SPARK PLUG FOR INTERNAL COMBUSTION ENGINE
- Publication number 20110273074
- Publication date Nov 10, 2011
- NGK SPARK PLUG CO., LTD.
- Yuichi Yamada
- H01 - BASIC ELECTRIC ELEMENTS