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Yukio Tsuda
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Tokai, JP
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last 30 patents
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Patent Grant
Method for producing high-strength steel having improved weldability
Patent number
4,988,393
Issue date
Jan 29, 1991
Nippon Steel Corporation
Ryota Yamaba
C21 - METALLURGY OF IRON
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Patent Grant
Method of producing non-oriented magnetic steel heavy plate having...
Patent number
4,950,336
Issue date
Aug 21, 1990
Nippon Steel Corporation
Yukio Tomita
C21 - METALLURGY OF IRON