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Hiroshi Yada
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Kitakyushu, JP
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last 30 patents
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Patent Grant
High-tension high-toughness steel having excellent resistance to de...
Patent number
4,537,644
Issue date
Aug 27, 1985
Nippon Steel Corporation
Jiro Tominaga
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Patent Grant
Ferritic steel having ultra-fine grains and a method for producing...
Patent number
4,466,842
Issue date
Aug 21, 1984
Nippon Steel Corporation
Hiroshi Yada
C21 - METALLURGY OF IRON