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Shigeaki Akao
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Aichi, JP
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last 30 patents
Information
Patent Grant
Sintered body assembly formed from a plurality of independent compa...
Patent number
4,907,330
Issue date
Mar 13, 1990
NGK Spark Plug Co., Ltd.
Shigeaki Akao
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Ceramic rocker arm
Patent number
4,875,442
Issue date
Oct 24, 1989
NGK Spark Plug Co., Ltd.
Shigeaki Akao
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Internal combustion engine with ceramics valves
Patent number
4,872,431
Issue date
Oct 10, 1989
NGK Spark Plug Co., Ltd.
Shigeaki Akao
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Method of forming crowned sliding surface in mechanical part
Patent number
4,850,095
Issue date
Jul 25, 1989
NGK Spark Plug Co., Ltd.
Shigeaki Akao
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Mounting of ceramic tip on metal rocker arm
Patent number
4,803,766
Issue date
Feb 14, 1989
NGK Spark Plug Co., Ltd.
Shigeaki Akao
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Metal piston and ceramic piston pin assembly
Patent number
4,796,517
Issue date
Jan 10, 1989
NGK Spark Plug Co., Ltd.
Shigeaki Akao
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Lubrication mechanism for piston pin and snap ring
Patent number
4,785,720
Issue date
Nov 22, 1988
NKG Spark Plug Co., Ltd.
Takio Kojima
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS