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Metal extraction by ion exchange
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Patent number 5,316,683
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Issue date May 31, 1994
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n.v. Union Miniere s.a.
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Guy G. Haesebroek
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Process for recovering germanium
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Patent number 5,277,882
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Issue date Jan 11, 1994
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Union Miniere s.a.
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Jean H. Vliegen
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Liquid-liquid extraction
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Patent number 4,419,338
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Issue date Dec 6, 1983
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Metallurgie Hoboken-Overpelt
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Achille De Schepper
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Apparatus for liquid-liquid extraction
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Patent number 4,277,445
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Issue date Jul 7, 1981
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Metallurgie Hoboken-Overpelt
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Achille De Schepper
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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