| Patents for C25C 1 - Electrolytic production, recovery or refining of metals by electrolysis of solutions (5,617) |
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| 06/07/1988 | CA1237797A1 Method and apparatus for effecting current reversal in electro-deposition of metals |
| 05/25/1988 | EP0268319A2 Method for extracting Mn metal and manganese dioxide from divalent Mn salt solutions |
| 05/25/1988 | EP0268102A1 Anode and electrochemical cell for the recovery of metals from aqueous solutions |
| 05/24/1988 | US4746409 Electrolytic refining of copper |
| 05/17/1988 | US4744874 Treatment of medium used in photographic processors |
| 05/17/1988 | CA1236792A1 Solution treatment process namely for zinc electrowinning |
| 05/03/1988 | US4741377 Double cavity mould for anode casting |
| 04/13/1988 | EP0263539A1 Process for treating zinc hydrometallurgy residues |
| 04/12/1988 | US4737351 Process for the recovery of tin |
| 04/06/1988 | EP0137776B1 Method of maintaining and testing for proper concentrations of thiourea in copper refining electrolysis cells |
| 04/06/1988 | CN87102096A Additive agent for lead electrolysis |
| 04/05/1988 | CA1234780A1 Anode with reverse angle lug registered with anode body |
| 04/05/1988 | CA1234778A1 Flowing ionizable gases along exposed edge of catalytic electrode or barrier of cell |
| 03/29/1988 | US4734172 Method for selectively recovering lead from complex sulphidic non-ferrous metal concentrates |
| 03/15/1988 | CA1234070A1 Electrowinning metal in diaphragm cell with smooth cathode |
| 03/15/1988 | CA1233963A1 Anode casting mould |
| 03/09/1988 | EP0259126A1 Catalytic deposition of metals in solid matrices |
| 03/01/1988 | US4728408 Compact electrolytic silver recovery system |
| 03/01/1988 | US4728407 Multiple chamber silver extraction system |
| 03/01/1988 | US4728402 Cationic and anionic separating membranes |
| 02/17/1988 | CN87206062U Electrolytic silver reclaimer |
| 02/03/1988 | EP0255451A1 Process for shutting down and restarting an electrolytic refining plant |
| 01/27/1988 | EP0254587A1 A method of manufacturing a self supporting member of phosphorus copper |
| 01/20/1988 | EP0253783A1 Process for refining gold and apparatus employed therefor |
| 01/20/1988 | CN87102881A Method for removal of monovalent ions from znso4 electrolyte by electrodialysis |
| 01/05/1988 | CA1231137A1 Method for monitoring the quality of znso.sub.4 electrolyte containing sb (v) |
| 12/29/1987 | US4715939 Zinc sulfate, semipermeable ion exchange membranes |
| 12/17/1987 | WO1987007653A1 Method and plant for electrolysis by seeping through one or a plurality of porous voluminal electrodes |
| 12/16/1987 | EP0249316A1 Method for recovering a metal |
| 12/02/1987 | EP0247713A1 Method for the purification of zinc sulphate electrolyte |
| 12/01/1987 | US4710277 Method for manufacturing zinc hydrometallurgically |
| 11/25/1987 | EP0246957A1 A method for treating organic waste material and a catalyst/cocatalyst composition useful therefor |
| 11/17/1987 | US4707227 Simultaneous electro-deposition of manganese and manganese dioxide |
| 11/11/1987 | EP0244433A1 Method for separation and recovery of metals from mixtures of metal sulfides such as lead ores |
| 10/22/1987 | WO1987006274A1 Metal recovery |
| 10/20/1987 | CA1228326A1 Process for electrowinning of metals |
| 10/14/1987 | EP0241432A2 Gas permeable electrode |
| 10/13/1987 | US4699700 From organic wastes |
| 10/07/1987 | EP0239805A1 Improvements relating to the treatment of medium used in photographic processors |
| 09/30/1987 | EP0238714A1 Electrolytic recovery of lead from scrap |
| 09/30/1987 | EP0238617A1 A method and apparatus for recovering copper from ores containing copper and iron sulphide |
| 09/29/1987 | CA1227454A1 Nickel electrowinning process |
| 09/29/1987 | CA1227453A1 Method of thiourea addition to electrolytic solutions useful for copper refining |
| 09/24/1987 | DE3613583A1 Process and device for the reduction of acid mists in electrolysis |
| 09/16/1987 | EP0223837A4 Method and apparatus for purification of gold. |
| 09/15/1987 | US4693790 Method for monitoring the quality of ZnSO4 electrolyte containing Sb (V) |
| 09/15/1987 | EP0222837A4 Electrolytic silver recovery. |
| 09/12/1987 | CN86203977U Preparation device for sodium amalgam |
| 09/09/1987 | EP0235999A1 Electrolytic process |
| 09/02/1987 | EP0233918A1 Process for metal recovery and compositions useful therein |
| 08/18/1987 | US4687559 Extraction using alkali cyanide and carbonate solution |
| 08/04/1987 | US4684450 Hydrometallurgy, electrochemistry, efficiency |
| 07/22/1987 | EP0229533A2 Method and apparatus for recovery of metal from solution |
| 07/22/1987 | CN86107232A Method and apparatus for stripping the metal layer electro-deposited on cathod plate |
| 07/14/1987 | CA1224047A1 Selective extraction of rhenium from aqueous sulfuric acid solutions |
| 07/08/1987 | EP0227689A1 A method for the production of metals by electrolysis |
| 07/08/1987 | CN86206837U Silver-recoverying device for waste fixing bath |
| 07/07/1987 | US4678550 Quantitative recovery |
| 07/02/1987 | DE3546039A1 Process for obtaining metals in the form of crystals, and apparatus for carrying out this process |
| 07/01/1987 | EP0227626A1 A method for manufacturing zinc hydrometallurgically |
| 06/30/1987 | US4676877 Process for production of fine and ultrafine zinc powders by electrolysis in a basic medium |
| 06/23/1987 | US4675085 Silver from potograpic thiosulfate solutions odorless; voltage monitoring, hollow anodes |
| 06/23/1987 | CA1223126A1 Process for recovering zinc from ferrites |
| 06/18/1987 | WO1987003623A1 An electrolytic process for the simultaneous deposition of gold and replenishment of elemental iodine |
| 06/03/1987 | EP0223837A1 Method and apparatus for purification of gold. |
| 06/02/1987 | US4670116 Purifying mixed-cation electrolyte |
| 06/02/1987 | US4670115 Electrolytic silver refining process and apparatus |
| 05/27/1987 | EP0222837A1 Electrolytic silver recovery |
| 05/27/1987 | CN85108249A Recovery method, equipment and uses of the silver-plating rinse water in the fixed bed particulate cathode reactor |
| 05/26/1987 | US4668354 Electrocatalytic deposition of metals in solid polymeric matrices |
| 05/26/1987 | US4668353 Bubbles, coalescing, electrolytic cells, masking, apertures, hoods |
| 05/19/1987 | US4666575 Method of recovering gallium from scrap containing gallium |
| 05/13/1987 | EP0221187A1 Method of dissolving and recovering noble metals |
| 04/22/1987 | EP0219473A1 A method for selectively recovering lead from complex sulfidic non-ferrous metal concentrates |
| 04/22/1987 | EP0219213A2 Method of recovering gallium from scrap containing gallium |
| 04/14/1987 | US4657644 Using anode and cathode container of electrolytic cell separated by membrane |
| 04/14/1987 | CA1220345A1 Process for the recovery of noble metals from ores |
| 04/09/1987 | WO1987002075A1 Process for producing gallium |
| 04/09/1987 | WO1987002074A1 A method and apparatus for recovering copper from ores containing copper and iron sulphide |
| 04/09/1987 | WO1987002068A1 Method for separation and recovery of metals from mixtures of metal sulfides such as lead ores |
| 04/07/1987 | CA1220161A1 Metal recovery from spent electroless and immersion plating solutions |
| 03/31/1987 | CA1219836A1 Electrolytic cell sections separated by shields providing zigzag circulation |
| 03/25/1987 | EP0215643A1 Method for monitoring the quality of zinc sulfate electrolyte containing antimony (V) |
| 03/24/1987 | US4652352 Process and apparatus for recovering metals from dilute solutions |
| 03/24/1987 | CA1219546A1 Method for the electrolytic production of lead |
| 03/17/1987 | US4650553 Alkanesulfonic acid as electrolyte |
| 03/12/1987 | EP0197071A4 Production of zinc from ores and concentrates. |
| 03/11/1987 | EP0214116A1 Process for electrolytically refining silver |
| 03/11/1987 | EP0105896B1 Apparatus for continuous production of zinc electroplated sheet |
| 02/26/1987 | WO1987001139A1 Process for metal recovery and compositions useful therein |
| 02/25/1987 | EP0211322A1 Silver recovery system |
| 02/24/1987 | US4645578 Procedure for copper chloride aqueous electrolysis |
| 02/03/1987 | US4640751 Reacting mercury and mercuric chloride to form mercurous chloride, oxidizing mercurous chloride with chlorine to form mercuric chloride, electrolyzing to form metallic mercury and chlorine |
| 02/03/1987 | CA1217346A1 Hydrometallurgical recovery of metal values from copper containing sulphide materials |
| 01/27/1987 | CA1217060A1 Metals recovery |
| 01/20/1987 | US4637865 Process for metal recovery and compositions useful therein |
| 01/20/1987 | CA1216823A1 Reusable electrolysis cathode for electrodeposition of metals |
| 01/15/1987 | WO1987000210A1 A method for the production of metals by electrolysis |
| 01/14/1987 | EP0061468B1 Recovery of silver from ores and concentrates |
| 01/14/1987 | EP0040243B1 Process and apparatus for producing metals at porous hydrophobic catalytic barriers |