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Katsura Matsubara
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Aichi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Ceramic heater, method of producing the same, and glow plug using a...
Patent number
7,705,273
Issue date
Apr 27, 2010
NGK Spark Plug Co., Ltd.
Nobuyuki Hotta
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information
Patent Grant
Ceramic heater and glow plug having the same
Patent number
7,282,670
Issue date
Oct 16, 2007
NGK Spark Plug Co., Ltd.
Katsura Matsubara
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information
Patent Grant
Silicon nitride sintered material and production process thereof
Patent number
6,849,207
Issue date
Feb 1, 2005
NGK Spark Plug Co., Ltd.
Kouji Funaki
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Silicon nitride sintered material and production process thereof
Patent number
6,657,166
Issue date
Dec 2, 2003
NGK Spark Plug Co., Ltd.
Kouji Funaki
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information
Patent Grant
Silicon nitride-tungsten carbide composite sintered material, proce...
Patent number
6,621,052
Issue date
Sep 16, 2003
NGK Spark Plug Co., Ltd.
Hiroki Watanabe
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information
Patent Grant
Silicon nitride—tungsten carbide composite sintered materia...
Patent number
6,563,089
Issue date
May 13, 2003
NGK Spark Plug Co., Ltd.
Hiroki Watanabe
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information
Patent Grant
Alumina-based sintered body insulator for spark plugs
Patent number
6,559,579
Issue date
May 6, 2003
NGK Spark Plug Co., Ltd.
Hirohito Ito
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Alumina-based sintered materials and process for producing the same
Patent number
6,069,105
Issue date
May 30, 2000
NGK Spark Plug Co., Ltd.
Yoshihiro Yamamoto
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Patents Applications
last 30 patents
Information
Patent Application
Ceramic Heater, Method of Producing the Same, and Glow Plug Using a...
Publication number
20070210053
Publication date
Sep 13, 2007
Nobuyuki Hotta
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information
Patent Application
Ceramic heater and glow plug having the same
Publication number
20050274707
Publication date
Dec 15, 2005
Katsura Matsubara
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information
Patent Application
Silicon nitride sintered material and production process thereof
Publication number
20020175155
Publication date
Nov 28, 2002
NGK SPARK PLUG CO., LTD.
Kouji Funaki
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
Silicon nitride - tungsten carbide composite sintered material, pro...
Publication number
20020148823
Publication date
Oct 17, 2002
NGK SPARK PLUG CO., LTD.
Hiroki Watanabe
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
Silicon nitride sintered material and production process thereof
Publication number
20020134774
Publication date
Sep 26, 2002
NGK SPARK PLUG CO., LTD.
Kouji Funaki
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
Silicon nitride-tungsten carbide composite sintered material, proce...
Publication number
20020113052
Publication date
Aug 22, 2002
NGK SPARK PLUG CO., LTD.
Hiroki Watanabe
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
Insulator for spark plug and spark plug comprising same
Publication number
20010004184
Publication date
Jun 21, 2001
Hirohito Ito
H01 - BASIC ELECTRIC ELEMENTS