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Hideo Hanawa
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Katsuta, JP
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last 30 patents
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Patent Grant
Process for recovering valuable metal from waste catalyst
Patent number
5,431,892
Issue date
Jul 11, 1995
Sumitomo Metal Mining Co., Ltd.
Keiji Toyabe
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...