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Electrolytic production of precious metals
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Patent number 4,554,058
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Issue date Nov 19, 1985
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The United States of America as represented by the Secretary of Interior
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Kenneth P. V. Lei
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C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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Removal of impurites from clay
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Patent number 4,239,735
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Issue date Dec 16, 1980
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The United States of America, as represented by the Secretary of the Interior
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Judith A. Eisele
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C01 - INORGANIC CHEMISTRY
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Method for dehydrating metal chlorides
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Patent number 4,105,747
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Issue date Aug 8, 1978
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The United States of America as represented by the Secretary of the Interior
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Judith A. Eisele
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C01 - INORGANIC CHEMISTRY
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Removal of iron from aluminum nitrate
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Patent number 4,032,613
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Issue date Jun 28, 1977
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The United States of America as represented by the Secretary of the Interior
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Lawrence E. Schultze
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...