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Shunichi Takagi
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Aichi, JP
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last 30 patents
Information
Patent Grant
Joint structure between a ceramic shaft and a metallic shaft
Patent number
4,991,991
Issue date
Feb 12, 1991
NGK Spark Co., Ltd.
Masaya Ito
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Method and means for joining a ceramic shaft and metal sleeve
Patent number
4,723,863
Issue date
Feb 9, 1988
NGK Spark Plug Co., Ltd.
Shunichi Takagi
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Electronic component using a silicon carbide substrate and a method...
Patent number
4,657,825
Issue date
Apr 14, 1987
NGK Spark Plug Co., Ltd.
Atsushi Kanda
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Sintered alumina product
Patent number
4,582,813
Issue date
Apr 15, 1986
NGK Spark Plug Co., Ltd
Atsushi Kanda
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Electrical self-purification ignition plug
Patent number
4,442,375
Issue date
Apr 10, 1984
NGK Spark Plug Co., Ltd.
Kanemitsu Nishio
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Spark plug and the process for production thereof
Patent number
4,427,915
Issue date
Jan 24, 1984
NGK Spark Plug Co. Ltd.
Kanemitsu Nishio
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Sparkplug with improved antifouling performance
Patent number
4,427,914
Issue date
Jan 24, 1984
NGK Spark Plug Co., Ltd.
Hisao Mizuno
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Sparkplug with antifouling coating on discharge end of insulator
Patent number
4,415,828
Issue date
Nov 15, 1983
NGK Spark Plug Co., Ltd.
Hisao Mizuno
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Spark plug and manufacturing process thereof
Patent number
4,414,483
Issue date
Nov 8, 1983
NGK Spark Plug Co., Ltd.
Kanemitsu Nishio
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Wide thermal range spark plug
Patent number
4,400,643
Issue date
Aug 23, 1983
NGK Spark Plug Co., Ltd.
Kanemitsu Nishio
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Spark plug with a sphere-like metal center electrode and manufactur...
Patent number
4,393,324
Issue date
Jul 12, 1983
NGK Spark Plug Co.
Kanemitsu Nishio
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of making an ignition plug insulator having an electrically...
Patent number
4,261,085
Issue date
Apr 14, 1981
NGK Spark Plug Co., Ltd.
Kanemitsu Nishio
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Spark plug having a low noise level
Patent number
4,224,554
Issue date
Sep 23, 1980
NGK Spark Plug Co., Ltd.
Kanemitsu Nishio
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Resistor composition for spark plug having a resistor enclosed therein
Patent number
4,173,731
Issue date
Nov 6, 1979
NGK Spark Plug Co., Ltd.
Shunichi Takagi
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Low noise resistance containing spark plug
Patent number
4,144,474
Issue date
Mar 13, 1979
NGK Spark Plug Co., Ltd.
Kanemitsu Nishio
H01 - BASIC ELECTRIC ELEMENTS