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KAZUTAKA KOBAYASHI
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TOKYO, JP
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Patents Grants
last 30 patents
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Patent Grant
High-strength, damage-resistant rail having hardness distribution o...
Patent number
6,361,625
Issue date
Mar 26, 2002
NKK Corporation
Masahisa Fujikake
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Grant
Rail having excellent resistance to rolling fatigue damage and rail...
Patent number
5,759,299
Issue date
Jun 2, 1998
NKK Corporation
Hiroyasu Yokoyama
C21 - METALLURGY OF IRON
Information
Patent Grant
High-strength, bainitic steel rail having excellent damage-resistance
Patent number
5,676,772
Issue date
Oct 14, 1997
NKK Corporation
Kazutaka Kobayashi
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Patents Applications
last 30 patents
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Patent Application
HIGH-STRENGTH, DAMAGE-RESISTANT RAIL HAVING HARDNESS DISTRIBUTION O...
Publication number
20020011283
Publication date
Jan 31, 2002
MASAHISA FUJIKAKE
C21 - METALLURGY OF IRON