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Hiroyuki Kajioka
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Kitakyushu, JP
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last 30 patents
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Patent Grant
Process for production of high-manganese iron alloy by smelting red...
Patent number
4,662,937
Issue date
May 5, 1987
Nippon Steel Corporation
Hiroyuki Katayama
C21 - METALLURGY OF IRON
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Patent Grant
Method of dephosphorization of metal or alloy
Patent number
4,198,229
Issue date
Apr 15, 1980
Nippon Steel Corporation
Hiroyuki Katayama
C21 - METALLURGY OF IRON