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Removal of metal ions from aqueous solution
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Patent number 4,969,995
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Issue date Nov 13, 1990
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The United States of America as represented by the United States Department o...
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Paul J. Jackson
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Removal of metal ions from aqueous solution
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Patent number 4,909,944
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Issue date Mar 20, 1990
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The United States of America as represented by the United States Department o...
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Paul J. Jackson
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Removal of heavy metals from waste water
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Patent number 4,731,187
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Issue date Mar 15, 1988
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Miyoshi Yushi Kabushiki Kaisha
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Masafumi Moriya
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Process for purifying phosphoric acid
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Patent number 4,713,229
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Issue date Dec 15, 1987
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Hoechst Aktiengesellschaft
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Gunther Schimmel
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Gold recovery process
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Patent number 4,543,169
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Issue date Sep 24, 1985
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RAI Research Corporation
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Vincent F. D'Agostino
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C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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