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Hiroaki Masui
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Kimitsu, JP
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Patents Grants
last 30 patents
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Patent Grant
Process for producing a high tension steel sheet product having an...
Patent number
RE31251
Issue date
May 24, 1983
Nippon Steel Corporation
Hajime Nakasugi
148 - Metal treatment
Information
Patent Grant
Method for producing a steel sheet having remarkably excellent toug...
Patent number
4,138,278
Issue date
Feb 6, 1979
Nippon Steel Corporation
Hajime Nakasugi
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for producing a high tension steel sheet product having an...
Patent number
4,105,474
Issue date
Aug 8, 1978
Nippon Steel Corporation
Hajime Nakasugi
C21 - METALLURGY OF IRON