Hiroki Masumoto

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Kitakyushu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for manufacturing high strength rail of excellent weldability
- Patent number 4,426,236
- Issue date Jan 17, 1984
- Nippon Steel Corporation
- Kazuo Sugino
- C21 - METALLURGY OF IRON
Information Patent Grant
Method for manufacturing high strength rail of excellent weldability
- Patent number 4,375,995
- Issue date Mar 8, 1983
- Nippon Steel Corporation
- Kazuo Sugino
- C21 - METALLURGY OF IRON
Information Patent Grant
Structural steel plate highly resistant to nitrate stress corrosion...
- Patent number 4,222,772
- Issue date Sep 16, 1980
- Nippon Steel Corporation
- Yasuo Sogo
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...