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Shoichi Nakaya
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Wako, JP
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Patents Grants
last 30 patents
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Patent Grant
Heat resistant alloy for use as material of engine valve
Patent number
7,481,970
Issue date
Jan 27, 2009
Hitachi Metals, Ltd.
Akihiro Toji
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Patents Applications
last 30 patents
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Patent Application
Heat resistant alloy for use as material of engine valve
Publication number
20050265887
Publication date
Dec 1, 2005
HITACHI METALS, LTD
Akihiro Toji
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
High-strength, heat-resistant alloy for exhaust valves with improve...
Publication number
20040184946
Publication date
Sep 23, 2004
Katsuhiko Tominaga
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...