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Kouichi Hirata
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Chiba, JP
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last 30 patents
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Patent Grant
Method of producing a high tensile steel sheet having excellent str...
Patent number
5,382,302
Issue date
Jan 17, 1995
Kawasaki Steel Corporation
Susumu Okada
C21 - METALLURGY OF IRON
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Patent Grant
Steel sheet for press working that exhibits excellent stiffness and...
Patent number
5,372,654
Issue date
Dec 13, 1994
Kawasaki Steel Corporation
Susumu Satoh
C21 - METALLURGY OF IRON
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Patent Grant
High tensile steel sheet having excellent stretch flanging formability
Patent number
5,332,453
Issue date
Jul 26, 1994
Kawasaki Steel Corporation
Susumu Okada
C21 - METALLURGY OF IRON