Tomoyuki IGARASHI

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Kasugai, JP

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Patents Grantslast 30 patents

Information Patent Grant
Spark plug
- Patent number 10,340,666
- Issue date Jul 2, 2019
- NGK Spark Plug Co., Ltd.
- Tomoyuki Igarashi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Spark plug
- Patent number 10,283,941
- Issue date May 7, 2019
- NGK Spark Plug Co., Ltd.
- Tomoyuki Igarashi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Spark plug
- Patent number 10,186,844
- Issue date Jan 22, 2019
- NGK Spark Plug Co., Ltd.
- Tsutomu Kobayashi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Spark plug
- Patent number 9,735,552
- Issue date Aug 15, 2017
- NGK Spark Plug Co., Ltd.
- Tatsunori Yamada
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Spark plug with an improved separation resistance of a noble metal tip
- Patent number 9,083,155
- Issue date Jul 14, 2015
- NGK Spark Plug Co., Ltd.
- Hirotoshi Yoshizaki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Spark plug
- Patent number 8,841,828
- Issue date Sep 23, 2014
- NGK Spark Plug Co., Ltd.
- Tomoyuki Igarashi
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
SPARK PLUG
- Publication number 20180323584
- Publication date Nov 8, 2018
- NGK Spark Plug Co., Ltd.
- Tomoyuki IGARASHI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SPARK PLUG
- Publication number 20170256916
- Publication date Sep 7, 2017
- NGK SPARK PLUG CO., LTD.
- Tomoyuki IGARASHI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SPARK PLUG
- Publication number 20170033538
- Publication date Feb 2, 2017
- NGK SPARK PLUG CO., LTD.
- Tsutomu KOBAYASHI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SPARK PLUG
- Publication number 20150162725
- Publication date Jun 11, 2015
- NGK Spark Plug Co., Ltd.
- Tatsunori YAMADA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SPARK PLUG
- Publication number 20140175967
- Publication date Jun 26, 2014
- NGK SPARK PLUG CO., LTD.
- Tomoyuki Igarashi
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
SPARK PLUG
- Publication number 20140062284
- Publication date Mar 6, 2014
- NGK Spark Plug Co., Ltd.
- Hirotoshi YOSHIZAKI
- H01 - BASIC ELECTRIC ELEMENTS