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Oxide ore smelting method
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Patent number 11,608,543
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Issue date Mar 21, 2023
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Sumitomo Metal Mining Co., Ltd.
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Takashi Iseki
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C21 - METALLURGY OF IRON
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Method for smelting oxide ore
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Patent number 11,479,832
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Issue date Oct 25, 2022
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Sumitomo Metal Mining Co., Ltd.
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Takashi Iseki
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Method for smelting oxide ore
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Patent number 10,626,480
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Issue date Apr 21, 2020
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Sumitomo Metal Mining Co., Ltd.
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Takashi Iseki
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...