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Akihiro Hamada
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Machida, JP
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last 30 patents
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Patent Grant
Al alloy poppet valve
Patent number
6,186,478
Issue date
Feb 13, 2001
Fuji Oozx, Inc.
Akihiro Hamada
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Poppet valve and method of manufacturing it
Patent number
5,799,683
Issue date
Sep 1, 1998
Fuji Oozx Inc.
Akihiro Hamada
C21 - METALLURGY OF IRON
Information
Patent Grant
Steels for exhaust valves having improved fatigue strength at high...
Patent number
5,753,179
Issue date
May 19, 1998
Tohoku Steel Co., Ltd.
Yoshitaka Nishizawa
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Shim for a tappet in an internal combustion engine
Patent number
5,596,959
Issue date
Jan 28, 1997
Fuji Oozx Inc.
Takeji Kenmoku
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Internal combustion valve having an iron based hard-facing alloy co...
Patent number
5,431,136
Issue date
Jul 11, 1995
Fuji Oozx Inc.
Takeji Kenmoku
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Shim structure in use for valve tappet of internal combustion engine
Patent number
5,323,742
Issue date
Jun 28, 1994
Fuji Oozx, Inc.
Akihiro Hamada
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS