Shinichi Hiramatsu

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Aichi, JP

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Patents Grantslast 30 patents

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

Patents Applicationslast 30 patents

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