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| Patents for C22B 23 - Obtaining nickel or cobalt (3,818) |
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| 06/08/1976 | US3961908 Autoclave system for leaching sulfide concentrates | | 05/18/1976 | US3957485 Reduction smelting of manganese nodules with a liquid reductant | | 05/11/1976 | US3955965 Refining metals | | 05/04/1976 | US3954448 Process for recovering cobalt, copper, iron, nickel and arsenic | | 04/27/1976 | US3953200 Nickel extraction process | | 04/13/1976 | US3950488 Ion exchanging | | 04/13/1976 | US3950487 Solvent-in-pulp extraction of copper and nickel from ammoniacal leach slurries | | 04/06/1976 | US3948639 Process and device for flash smelting sulphide ores and concentrates | | 03/30/1976 | US3947621 Furnace and method for reducing metal oxides to molten metal | | 03/09/1976 | US3942974 Manganese nodule pelletizing | | 03/02/1976 | US3941793 Quinoline 2 carboxylic acids used in metal extraction processes | | 03/02/1976 | US3941587 Metallurgical process using oxygen | | 02/17/1976 | US3938989 Arsenic removal from nickel matte | | 02/10/1976 | US3937667 Precipitation, drops, gelation | | 01/20/1976 | US3933976 Nickel-cobalt separation | | 01/20/1976 | US3933975 Multistage, oxidation, precipitation | | 01/20/1976 | US3933477 Method of producing ferro-nickel or metallic nickel | | 01/13/1976 | US3932170 Copper, iron, nickel sulfide ores |
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