| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 05/04/1976 | US3954951 Preparation of red amorphous selenium |
| 05/04/1976 | US3954937 Sulfuric acid, lixiviation |
| 05/04/1976 | US3954936 O-nitrosophenols as extractants for metal values |
| 05/04/1976 | US3954452 Polyacrylamide flocculant |
| 05/04/1976 | US3954450 Recovery of lead, zinc and iron sulfide |
| 05/04/1976 | US3954449 Process for the recovery of noble metals |
| 04/27/1976 | US3953306 Metal recovery from waste treatment sludges |
| 04/20/1976 | US3951649 Leaching with ferric chloride, ion exchanging with sulfuric acid, hydrometallurical reduction |
| 04/13/1976 | US3950488 Ion exchanging |
| 04/13/1976 | US3950487 Solvent-in-pulp extraction of copper and nickel from ammoniacal leach slurries |
| 04/13/1976 | US3950486 Method for separating metal constituents from ocean floor nodules |
| 03/16/1976 | US3944486 Process for treating sulfide-containing materials |
| 03/09/1976 | US3942974 Manganese nodule pelletizing |
| 03/02/1976 | US3941793 Quinoline 2 carboxylic acids used in metal extraction processes |
| 02/24/1976 | US3940261 Process for preparing crystalline silver particles having electrically conductive surfaces and product |
| 02/17/1976 | US3939226 Sequestrant, fire retardant |
| 02/17/1976 | US3939203 Certain substituted 2-hydroxybenzophenoximes and the process of extracting copper therewith |
| 02/10/1976 | US3937667 Precipitation, drops, gelation |
| 02/10/1976 | US3937520 In situ mining using bacteria |
| 02/03/1976 | US3936494 Naphthenohydroxamic acid preparation |
| 01/27/1976 | US3935006 Process for eluting adsorbed gold and/or silver values from activated carbon |
| 01/20/1976 | US3933976 Nickel-cobalt separation |
| 01/20/1976 | US3933975 Multistage, oxidation, precipitation |
| 01/13/1976 | US3932581 From aqueous solution, water soluble magnesium compound |
| 01/13/1976 | US3932505 Hydrazide salts |
| 01/06/1976 | US3931342 Process for the recovery of glycols from an aqueous solution |
| 01/06/1976 | US3931044 Method for recovering molybdenum catalyst values and use of said values in the recycling of said catalyst |
| 01/06/1976 | US3931002 Process for removing heavy metals from solutions |
| 01/06/1976 | US3930969 Leaching |