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Method for dissolution of metal
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Patent number 5,120,523
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Issue date Jun 9, 1992
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Agency of Industrial Science & Technology, Ministry of International Trade &...
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Yukimichi Nakao
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Tungsten recovery
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Patent number 4,784,688
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Issue date Nov 15, 1988
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Interox Chemicals Limited
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Diana M. Anderson
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Lead removal method
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Patent number 4,704,260
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Issue date Nov 3, 1987
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Union Oil Company of California
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Arnold L. Shugarman
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Process for beneficiating sulfide ores
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Patent number 4,289,529
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Issue date Sep 15, 1981
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Hazen Research, Inc.
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James K. Kindig
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Process for beneficiating sulfide ores
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Patent number 4,289,528
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Issue date Sep 15, 1981
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Hazen Research, Inc.
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James K. Kindig
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Process for beneficiating ores
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Patent number 4,276,081
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Issue date Jun 30, 1981
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Hazen Research, Inc.
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James K. Kindig
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Process for beneficiating oxide ores
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Patent number 4,257,881
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Issue date Mar 24, 1981
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Hazen Research, Inc.
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James K. Kindig
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Process for beneficiating oxide ores
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Patent number 4,205,979
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Issue date Jun 3, 1980
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Hazen Research, Inc.
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James K. Kindig
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3647720
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Patent number 3,647,720
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Issue date Mar 7, 1972
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C07 - ORGANIC CHEMISTRY
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3511645
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Patent number 3,511,645
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Issue date May 12, 1970
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...