| Patents for C25C 1 - Electrolytic production, recovery or refining of metals by electrolysis of solutions (5,617) |
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| 12/24/1991 | US5074974 Ion exchanging |
| 12/12/1991 | WO1991019020A2 Electrochemical synthesis and simultaneous purification process |
| 12/09/1991 | CA2043256A1 Electrochemical synthesis and simultaneous purification process |
| 12/08/1991 | CA2018635A1 Process to recover pure copper during purification of zinc sulfate solution |
| 12/04/1991 | CN1056720A Direct electrolysis method of powder metal materials |
| 11/19/1991 | US5066379 Container for corrosive material |
| 11/19/1991 | CA1292203C Electrolytic recovery of lead from scrap |
| 11/14/1991 | WO1991017287A1 Method and device for porous-electrode electrolysis |
| 10/31/1991 | WO1991014023A3 Fully automatic current control system for metal depletion cells |
| 10/31/1991 | DE4013551A1 High purity copper prodn. by electrorefining - using gas injection to remove electrolyte impurities |
| 10/30/1991 | EP0454056A1 Aluminium cathode-plate for the electrowinning of zinc |
| 10/22/1991 | CA1291063C Method and apparatus for purification of gold |
| 10/08/1991 | CA1290225C Process for metal recovery and compositions useful therein |
| 10/03/1991 | WO1991014801A1 Device for the electrolytic regeneration of an etching agent containing metal, especially copper |
| 10/02/1991 | DE4010034A1 Vorrichtung zur elektrolytischen regeneration eines metallhaltigen, insbesondere kupferhaltigen, aetzmittels Apparatus for the electrolytic regeneration of a metal-containing, in particular copper-containing, etching agent |
| 10/01/1991 | USH970 Melt refining, electrorefining |
| 09/24/1991 | CA1289509C Energy-saving type zinc electrolysis method |
| 09/19/1991 | WO1991014022A1 Silver recovery device |
| 09/18/1991 | EP0302891B1 Method and plant for electrolysis by seeping through one or a plurality of porous voluminal electrodes |
| 09/10/1991 | US5047133 Electrocatalytic diffusion sheet |
| 09/05/1991 | DE4006751A1 Vollautomatische stromsteuerung fuer metallabreicherungszellen Fully automatic power control for metallabreicherungszellen |
| 09/04/1991 | WO1991014023A2 Fully automatic current control system for metal depletion cells |
| 09/04/1991 | CN2084056U Composite cathode plate electrolysis copper |
| 09/04/1991 | CN1054278A Extraction of gold |
| 09/04/1991 | CN1013770B Wet smelting zinc |
| 09/04/1991 | CA2076759A1 Fully automatic current control system for metal depletion cells |
| 09/03/1991 | US5045160 Demetallization of wastes |
| 08/13/1991 | US5039337 Process for producing electrolytic lead and elemental sulfur from galena |
| 07/31/1991 | CN1013381B Extraction method of zinc from ores and concentrates |
| 07/24/1991 | EP0437921A2 Cyclic voltamperemetry |
| 06/26/1991 | EP0433750A1 Process for the preparation of chromic acid |
| 06/26/1991 | EP0433748A1 Process for the preparation of chromic acid |
| 06/26/1991 | CN1052515A Method for acid balance in simultaneous electrolysis of zn and mno2 |
| 06/19/1991 | CN1012909B Process for recovering lead from exhuasted accumulator |
| 06/18/1991 | US5024738 Recovery of mercury from mercury compounds via electrolytic methods |
| 06/17/1991 | CA2032369A1 Process for the preparation of chromic acid |
| 06/17/1991 | CA2032368A1 Process for the preparation of chromic acid |
| 06/12/1991 | WO1991009159A1 Method for recovering silver from a photographic fixing solution |
| 06/12/1991 | CA2070998A1 Method for recovering silver from a photographic fixing solution |
| 05/29/1991 | EP0428918A1 Process and device for elimination and recovery of valuable metals, in particular noble metals and mercury, from waste solutions |
| 05/29/1991 | EP0428789A1 An electrolytic silver recovery device |
| 05/28/1991 | US5019172 Chemical treatment of aluminum cathodes in zinc electrowinning |
| 05/27/1991 | CA2003913A1 Controlling processes for the electrolytic recovery of metals |
| 05/22/1991 | EP0428194A1 Process for treating Jarosite containing residues |
| 05/21/1991 | US5017273 Disposable cell for recovering conductive metal and method of using |
| 05/01/1991 | CN2076107U Electrolytic granite bath |
| 04/25/1991 | CA2027973A1 Method of reprocessing jarosite-containing residues |
| 04/25/1991 | CA2027156A1 Cyclic voltammetry |
| 04/23/1991 | US5009755 Refining method |
| 04/23/1991 | US5009750 Process and apparatus for the manufacture of a metal foil |
| 03/06/1991 | EP0415896A1 Electrode for electrolysis |
| 03/05/1991 | US4997533 Electrolysis, circulation |
| 03/05/1991 | US4997532 Process for extracting noble metals |
| 02/13/1991 | EP0412935A1 Method of recycling non-sorted mixtures of used button cells and other metallic objects and further recuperating their metallic components |
| 02/12/1991 | US4992149 Leaching with acidic solvent of tetrafluoroboric acid, electrolysis |
| 02/09/1991 | CA2022763A1 Process for recycling an unsorted mixture of spent button cells and/or other metallic objects and for recovering their metallic components |
| 02/08/1991 | CA2022296A1 Process for extracting oxygen and iron from iron oxide-containing ores |
| 02/06/1991 | EP0411687A2 Process for producing electrolytic lead and elemental sulfur from galena |
| 01/23/1991 | EP0409792A1 Process for the simultaneous recovery of manganese dioxide and zinc |
| 01/23/1991 | EP0409420A1 Hybrid chromium recovery |
| 01/23/1991 | CN1048733A Method for recovering trace ag in waste developing and printing liquid of film |
| 01/23/1991 | CN1048732A 电极 Electrode |
| 01/21/1991 | CA2021181A1 Process for the simultaneous recovery of manganese dioxide and zinc |
| 01/20/1991 | CA2017196A1 Hybrid chromium recovery process |
| 01/01/1991 | US4981562 Electrolytic recovery of mercury enriched in isotopic abundance |
| 12/12/1990 | CN1047709A Lead, silver, calcium rare earth multiple-insolubility alloy anode used in eletrolysis |
| 11/28/1990 | EP0362240A4 Controlling processes for the electrolytic recovery of metals |
| 11/20/1990 | US4971662 Hydrometallurgical recovery of metal values from cooper containing sulphide materials |
| 11/07/1990 | CN1046761A Wet smelting zinc |
| 10/30/1990 | US4966624 Method and apparatus for electric refining of lead |
| 10/30/1990 | CA1275635C Procedure for the cathodic electrowinning of metals, with the corresponding acid generation, from its salt solution |
| 10/10/1990 | EP0391028A1 Continuous silver refining cell |
| 09/19/1990 | EP0387907A1 Method and apparatus for recovering silver from waste photographic processing solutions |
| 09/18/1990 | US4957611 Process and apparatus for the electro-deposition of copper sheets on the cathodic sides of bipolar electrodes made of lead |
| 09/04/1990 | US4954234 Drum electrolysis |
| 09/04/1990 | US4954228 Metal deposited on spheres |
| 08/21/1990 | CA1272982A1 Method for the recovery of lithium from solutions by electrodialysis |
| 08/14/1990 | US4948476 Using electrolytic oxidation cell and coupled transport module |
| 08/07/1990 | CA1272464A1 Method of recovering gallium from scrap containing gallium |
| 08/01/1990 | EP0155955B1 Electrode for electrometallurgical processes |
| 08/01/1990 | CN1044306A Process and apparatus for manufacture of metal foil |
| 07/25/1990 | EP0221187B1 Method of dissolving and recovering noble metals |
| 07/25/1990 | CN1044128A Purifying copper electrolyte by means of liquid-liquid extraction |
| 06/30/1990 | CA2006893A1 Process for extracting noble metals |
| 06/05/1990 | US4931168 Gas permeable electrode |
| 05/29/1990 | CA1269635A1 Electrolyzing method and electrolytic cell employing fluidized bed |
| 05/23/1990 | EP0369983A1 Process and apparatus for the electrolytic production of a metal foil |
| 05/22/1990 | US4927510 Hydrometallurgical process for recovering in pure metal form all the lead contained in the active mass of exhausted batteries |
| 05/09/1990 | EP0367372A1 Manufacture of a soderberg electrode incorporating a high carbon-contributing phenolic sacrificial binder |
| 05/08/1990 | CA1268733A1 Device for isolating and extracting solubilised metals through electrolysis |
| 05/08/1990 | CA1268731A1 Process for preparation of high purity chalcogenide elements by the electrochemical reduction of chalcogenide esters |
| 05/08/1990 | CA1268730A1 Purification of gases containing mercury and recovery of metallic mercury |
| 04/11/1990 | EP0363314A1 Process and device for recovering catalyst constituents |
| 04/11/1990 | EP0362240A1 Controlling processes for the electrolytic recovery of metals |
| 04/05/1990 | WO1990003456A1 Metal-recovery device |
| 04/03/1990 | US4913779 Pulsating circulation of liquid electrolyte, reversing direction of flow prevents clogging |
| 03/29/1990 | DE3832674A1 Metallrueckgewinnungs-vorrichtung Metallrueckgewinnungs-device |
| 03/27/1990 | US4911804 Electrochemical reactor for copper removal from barren solutions |
| 03/21/1990 | EP0359631A1 New electrolysis cell and electrolysis unit for putting it in active operation |
| 03/20/1990 | US4909913 Electrolysis; diaphragm being a fluorinated anionic exchange membrane |