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High temperature reduction of copper salts
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Patent number 4,192,676
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Issue date Mar 11, 1980
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Cyprus Metallurgical Processes Corporation
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James E. Reynolds
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Ore treatment process
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Patent number 4,057,422
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Issue date Nov 8, 1977
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Rollan Swanson
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Use of scavenger in recovery of metal values
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Patent number 3,932,170
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Issue date Jan 13, 1976
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The United States of America as represented by the Secretary of the Interior
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Ishwarlal D. Shah
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3929468
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Patent number 3,929,468
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Issue date Dec 30, 1975
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3918962
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Patent number 3,918,962
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Issue date Nov 11, 1975
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3894927
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Patent number 3,894,927
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Issue date Jul 15, 1975
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3880650
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Patent number 3,880,650
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Issue date Apr 29, 1975
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3876748
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Patent number 3,876,748
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Issue date Apr 8, 1975
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3855384
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Patent number 3,855,384
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Issue date Dec 17, 1974
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3802868
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Patent number 3,802,868
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Issue date Apr 9, 1974
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3701648
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Patent number 3,701,648
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Issue date Oct 31, 1972
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3622304
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Patent number 3,622,304
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Issue date Nov 23, 1971
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3589892
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Patent number 3,589,892
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Issue date Jun 29, 1971
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3383198
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Patent number 3,383,198
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Issue date May 14, 1968
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B22 - CASTING POWDER METALLURGY
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2758020
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Patent number 2,758,020
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Issue date Aug 7, 1956
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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2663631
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Patent number 2,663,631
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Issue date Dec 22, 1953
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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2045226
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Patent number 2,045,226
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Issue date Jun 23, 1936
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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1770866
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Patent number 1,770,866
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Issue date Jul 15, 1930
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...