Koji Yamanaka

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Kariya-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Spark plug for internal combustion engine
- Patent number 10,559,944
- Issue date Feb 11, 2020
- Denso Corporation
- Yuji Kaji
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Spark plug and method for manufacturing the same
- Patent number 9,929,542
- Issue date Mar 27, 2018
- Denso Corporation
- Kenichi Araya
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Ground electrode structure of a spark plug for a gas engine
- Patent number 7,154,213
- Issue date Dec 26, 2006
- Denso Corporation
- Toshiya Nakamura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Spark plug designed to enhance strength of joint of noble metal mem...
- Patent number 7,030,544
- Issue date Apr 18, 2006
- Denso Corporation
- Koji Yamanaka
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
SPARK PLUG FOR INTERNAL COMBUSTION ENGINE
- Publication number 20190214791
- Publication date Jul 11, 2019
- Denso Corporation
- Yuji KAJI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SPARK PLUG AND METHOD FOR MANUFACTURING THE SAME
- Publication number 20170288373
- Publication date Oct 5, 2017
- DENSO CORPORATION
- Kenichi ARAYA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Spark plug having shield for ground electrode
- Publication number 20060181185
- Publication date Aug 17, 2006
- DENSO CORPORATION
- Koji Yamanaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Spark plug designed to enhance strength of joint of noble metal mem...
- Publication number 20050134160
- Publication date Jun 23, 2005
- DENSO CORPORATION
- Koji Yamanaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Spark plug for a gas engine
- Publication number 20050062385
- Publication date Mar 24, 2005
- DENSO CORPORATION
- Toshiya Nakamura
- H01 - BASIC ELECTRIC ELEMENTS