Junichi Kagawa

Person

Nagoya, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Spark plug with alloy chip
- Patent number RE43758
- Issue date Oct 23, 2012
- NGK Spark Plug Co., Ltd.
- Wataru Matsutani
- 313 - Electric lamp and discharge devices
Information Patent Grant
Spark plug
- Patent number 6,707,237
- Issue date Mar 16, 2004
- NGK Spark Plug Co., Ltd.
- Hideki Teramura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Multielectrode spark plug
- Patent number 6,064,143
- Issue date May 16, 2000
- NGK Spark Plug Co., Ltd.
- Junichi Kagawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Spark plug having a platinum tip on an outer electrode
- Patent number 5,866,973
- Issue date Feb 2, 1999
- NGK Spark Plug Co., Ltd.
- Junichi Kagawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Spark plug
- Patent number 5,793,793
- Issue date Aug 11, 1998
- NGK Spark Plug Co., Ltd.
- Wataru Matsutani
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Creeping discharge spark plug
- Patent number 5,793,151
- Issue date Aug 11, 1998
- NGK Spark Plug Co., Ltd.
- Junichi Kagawa
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Spark plug and a method of making the same for an internal combusti...
- Patent number 5,574,329
- Issue date Nov 12, 1996
- NGK Spark Plug Co., Ltd.
- Junichi Kagawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of making a spark plug for an internal combustion engine
- Patent number 5,556,315
- Issue date Sep 17, 1996
- NGK Spark Plug Co., Ltd.
- Junichi Kagawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Spark plug having a noble metal electrode portion
- Patent number 5,497,045
- Issue date Mar 5, 1996
- NGK Spark Plug Co., Ltd.
- Wataru Matsutani
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Spark plug and a method of making of same
- Patent number 5,478,265
- Issue date Dec 26, 1995
- NGK Spark Plug Co., Ltd.
- Wataru Matsutani
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of manufacturing a spark plug electrode
- Patent number 5,461,210
- Issue date Oct 24, 1995
- NGK Spark Plug Co., Ltd.
- Wataru Matsutani
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electrode for a spark plug in which a firing tip is laser welded to...
- Patent number 5,461,276
- Issue date Oct 24, 1995
- NGK Spark Plug Co., Ltd.
- Wataru Matsutani
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Misfire detector device for use in an internal combustion engine
- Patent number 5,347,856
- Issue date Sep 20, 1994
- NGK Spark Plug Co., Ltd.
- Shigeru Miyata
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Misfire detector device for use in an internal combustion engine
- Patent number 5,347,855
- Issue date Sep 20, 1994
- NGK Spark Plug Co. Ltd.
- Shigeru Miyata
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Multi-gap spark plug for an internal combustion engine
- Patent number 5,189,333
- Issue date Feb 23, 1993
- NGK Spark Plug Co., Ltd.
- Junichi Kagawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Spark plug for internal combustion engine
- Patent number 5,144,188
- Issue date Sep 1, 1992
- NGK Spark Plug Co., Ltd.
- Junichi Kagawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Spark plug with counterelectrode having plural apertures in flat po...
- Patent number 4,914,343
- Issue date Apr 3, 1990
- NGK Spark Plug Co., Ltd.
- Junichi Kagawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Process for producing the center electrode of spark plug
- Patent number 4,904,216
- Issue date Feb 27, 1990
- NGK Spark Plug Co., Ltd.
- Junichi Kagawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Spark plug with pressure sensor
- Patent number 4,881,403
- Issue date Nov 21, 1989
- NGK Spark Plug Co., Ltd.
- Junichi Kagawa
- G01 - MEASURING TESTING
Information Patent Grant
Ceramic valve supporting structure in use for internal combustion e...
- Patent number 4,838,218
- Issue date Jun 13, 1989
- NGK Spark Plug Co., Ltd.
- Yasushi Sato
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Center electrode structure for spark plug
- Patent number 4,814,665
- Issue date Mar 21, 1989
- NGK Spark Plug Co. Ltd.
- Akio Sakura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Center electrode structure for spark plug
- Patent number 4,808,135
- Issue date Feb 28, 1989
- NGK Spark Plug Co., Ltd.
- Akio Sakura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Spark plug
- Patent number 4,786,267
- Issue date Nov 22, 1988
- NGK Spark Plug Co., Ltd.
- Akihiro Toya
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Spark plug
- Patent number 4,743,793
- Issue date May 10, 1988
- NGK Spark Plug Co., Ltd.
- Akihiro Toya
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Spark plug
- Patent number 4,670,684
- Issue date Jun 2, 1987
- NGK Spark Plug Co., Ltd.
- Junichi Kagawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electrode structure for a spark plug
- Patent number 4,659,960
- Issue date Apr 21, 1987
- NGK Spark Plug Co., Ltd.
- Akihiro Toya
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Nickel alloy for spark plug electrodes
- Patent number 4,329,174
- Issue date May 11, 1982
- NGK Spark Plug Co., Ltd.
- Tsuneo Ito
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents

Information Patent Application
Spark plug
- Publication number 20030071552
- Publication date Apr 17, 2003
- NGK SPARK PLUG CO., LTD.
- Hideki Teramura
- H01 - BASIC ELECTRIC ELEMENTS

Junichi Kagawa

Person

Patents Grantslast 30 patents

Spark plug with alloy chip

Spark plug

Multielectrode spark plug

Spark plug having a platinum tip on an outer electrode

Spark plug

Creeping discharge spark plug

Spark plug and a method of making the same for an internal combusti...

Method of making a spark plug for an internal combustion engine

Spark plug having a noble metal electrode portion

Spark plug and a method of making of same

Method of manufacturing a spark plug electrode

Electrode for a spark plug in which a firing tip is laser welded to...

Misfire detector device for use in an internal combustion engine

Misfire detector device for use in an internal combustion engine

Multi-gap spark plug for an internal combustion engine

Spark plug for internal combustion engine

Spark plug with counterelectrode having plural apertures in flat po...

Process for producing the center electrode of spark plug

Spark plug with pressure sensor

Ceramic valve supporting structure in use for internal combustion e...

Center electrode structure for spark plug

Center electrode structure for spark plug

Spark plug

Spark plug

Spark plug

Electrode structure for a spark plug

Nickel alloy for spark plug electrodes

Patents Applicationslast 30 patents

Spark plug