Hiroki Watanabe

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Gifu, JP

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Patents Grantslast 30 patents

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

Patents Applicationslast 30 patents

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