| Patents for C22B 11 - Obtaining noble metals (5,080) |
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| 12/23/1980 | CA1091935A1 Process for recovering platinum group metals from ores also containing nickel, copper and iron |
| 12/16/1980 | US4239833 Grid of precious metals for the recovery of platinum metals escaping from a catalyst during the reaction, and especially of platinum during oxidation of ammonia |
| 12/02/1980 | US4236918 Recovery of elemental sulfur and metal values from tailings from copper recovery processes |
| 12/02/1980 | CA1090584A1 Aluminum containing precipitating agent for precious metals and method for its use |
| 12/02/1980 | CA1090583A1 Stepwise process for recovering precious metals from solution |
| 11/25/1980 | CA1090145A1 Extraction recovery of certain metal values |
| 11/25/1980 | CA1090141A1 Method for recovering silver and gold in solid silver or gold bearing matter |
| 10/30/1980 | WO1980002235A1 A method and an apparatus for gathering valuable floating,dissolved and suspended substances from sea water |
| 10/29/1980 | EP0018340A1 An offshore plant for recovery of valuable floating, dissolved and suspended materials from sea water |
| 10/28/1980 | US4230487 Method of selectively bringing into solution the non-ferrous metals contained in sulphurized ores and concentrates |
| 10/21/1980 | US4229270 Process for the recovery of metal values from anode slimes |
| 10/21/1980 | US4229209 Process for beneficiating gold |
| 10/14/1980 | US4227681 Metal filler, porous pad |
| 10/07/1980 | CA1087040A1 Chemical vapor deposition |
| 10/01/1980 | EP0016624A1 Coal de-ashing process |
| 10/01/1980 | EP0015938A1 Recovery of elemental sulfur and metal values from tailings from copper recovery processes |
| 09/23/1980 | CA1086073A1 Electric smelting of lead sulphate residues |
| 09/23/1980 | CA1086070A1 Separation and purification of platinum and palladium |
| 09/23/1980 | CA1086069A1 Recovery and purification of iridium |
| 09/02/1980 | US4220320 Silver recovery apparatus |
| 08/26/1980 | CA1084276A1 Decomposition leach of sulfide ores with chlorine and oxygen |
| 08/20/1980 | EP0014629A1 Process for the recovery of ruthenium present in an aqueous nitric solution and application of this process to a nitric solution obtained by dissolution of irradiated nuclear fuel elements |
| 08/19/1980 | US4218242 Silver recovery method |
| 08/19/1980 | CA1083855A1 Rhodium from hydroformylation still heels |
| 08/19/1980 | CA1083826A1 Process for extracting silver from residues containing silver and lead |
| 08/05/1980 | US4216012 Process for the treatment of incinerated sewage sludge ash |
| 08/05/1980 | CA1082926A1 Recovery of silver from silver containing solutions |
| 07/22/1980 | US4213600 Spent photographic processing solutions |
| 07/01/1980 | CA1080486A1 Rehabilitation of zinc electrolytic metallurgy residues by recovery of contained metals |
| 07/01/1980 | CA1080481A1 Recovery of precious metals from refractory material |
| 04/30/1980 | EP0010367A1 Method of recovering metal values |
| 04/08/1980 | CA1075013A1 Recovery of cesium and palladium from nuclear reactor fuel processing waste |
| 03/25/1980 | CA1074127A1 Process for precipitating precious metals from solutions which contain them |
| 03/25/1980 | CA1074126A1 Process for separating and recovering rhodium and iridium from their mixtures with other precious metals |
| 03/18/1980 | CA1073681A1 Recovery of precious metals from metal sulphides |
| 02/26/1980 | US4190436 Air mix agitation for the extraction of metals from leachable ores |
| 02/12/1980 | US4188363 Recovery of rhodium complex catalysts homogeneously dissolved in organic media |
| 02/12/1980 | US4188208 Recovery of gold from carbonaceous gold-bearing ores |
| 01/15/1980 | CA1069704A1 Extraction and purification of silver |
| 12/25/1979 | CA1068487A Method of recovering the constituents of catalysts comprising an aluminous carrier, platinum and iridium |
| 12/18/1979 | CA1068116A1 Process for the treatment of platinum group metals and gold |
| 12/04/1979 | US4177068 From their ores by reaction with sodium cyanide or potassium cyanide in alkaline solution |
| 12/04/1979 | US4177067 Oxidation, reduction |
| 11/15/1979 | WO1979000906A1 Recovery of elemental sulfur and metal values from tailings from copper recovery processes |
| 11/13/1979 | CA1066062A1 Recovery of nitric acid soluble transition metals from sulfur and iron containing ores of the same |
| 11/06/1979 | US4173519 Method, process, system, and apparatus for recovering metal values from ores |
| 10/23/1979 | CA1064711A1 Extraction method for non-ferrous metals |
| 10/23/1979 | CA1064708A1 Process for separation and recovery of metal values from sulfide ore concentrates |
| 10/17/1979 | EP0004778A2 Process for the treatment of incinerated sewage sludge ash |
| 09/25/1979 | US4168971 High efficiency gold recovery method |
| 09/25/1979 | US4168969 Oxidation and reduction leaching, desulfurization |
| 09/18/1979 | US4168295 Ultrasonic transducers |
| 09/18/1979 | CA1062473A1 Refining of metals |
| 09/04/1979 | CA1061573A1 Separation of metals |
| 09/04/1979 | CA1061572A1 Method of selectively bringing into solution the non-ferrous metals contained in sulphurized ores and concentrates |
| 08/28/1979 | CA1061283A1 Process for removing copper from copper anode slime |
| 08/28/1979 | CA1061121A1 Separation of platinum group metals and gold |
| 08/21/1979 | CA1060662A1 Treatment of material with hydrogen chloride |
| 08/07/1979 | US4163664 Process for precipitating precious metals from solutions which contain them |
| 08/07/1979 | CA1059771A1 Hydrometallurgical process for the recovery of valuable components from the anode slime produced in the electrolytical refining of copper |
| 07/31/1979 | US4163046 Recovery of selenium |
| 07/03/1979 | US4159930 Process for recovering heavy metal ions from dilute aqueous solution |
| 07/03/1979 | CA1057511A1 Method for selectively dissolving non-ferrous metals contained in pyritic ores |
| 07/03/1979 | CA1057506A1 Method of producing metallic lead and silver from their sulfides |
| 06/19/1979 | CA1056855A1 5-heptyl-2-hydroxy benzaldoximes |
| 06/12/1979 | CA1056160A1 Recovery of silver from silver-containing solutions |
| 05/29/1979 | US4156604 Metallic filler coated with polyurethane foam for ion exchanging |
| 05/22/1979 | US4155810 Thiobacillus |
| 05/22/1979 | US4155750 Recovery and purification of rhodium |
| 04/24/1979 | US4150977 Process for stripping photographic materials |
| 04/03/1979 | CA1051669A1 Method of recovery of the constituent elements of catalysts based of precious metals |
| 03/20/1979 | US4145212 Process for recovering silver and optionally gold from a solid starting material containing said metals |
| 03/20/1979 | US4145187 Treatment of material with hydrogen chloride |
| 03/06/1979 | CA1049794A1 Separation and/or purification of precious metals |
| 02/13/1979 | CA1048277A1 Recovery of pt/rh from car exhaust catalysts |
| 02/07/1979 | EP0000665A1 Rhodium recovery from hydroformylation still heel with triaryl phosphate ligand |
| 02/06/1979 | US4138248 Recovery of elemental sulfur and metal values from tailings from copper recovery processes |
| 02/06/1979 | CA1047772A1 Recovery of silver and terephthalic acid components from light sensitive film material |
| 01/30/1979 | US4137290 Ion absorbing, reversal of fluid flow |
| 01/23/1979 | US4135923 Purification of precious metals by alloying with copper |
| 01/23/1979 | US4135912 Produces high grade lead |
| 01/23/1979 | US4135911 Rhodium recovery from hydroformylation still heel with triaryl phosphite ligand |
| 01/16/1979 | CA1046289A1 Hydrometallurgical treatment of nickel and copper bearing intermediates |
| 01/09/1979 | CA1045825A1 Process for the destruction of developed and undeveloped photosensitive film and the recovery of products therefrom |
| 12/26/1978 | US4131640 From carbonylation process, treatment with hydrogen and carbon monoxide, solvent, compound which can replace carbon monoxide as a ligand |
| 12/26/1978 | US4131455 Borohydride reduction |
| 12/26/1978 | US4131454 Process for recovering silver and gold from chloride solutions |
| 12/19/1978 | US4130625 Recovery and purification of iridium |
| 12/19/1978 | US4130273 Silver recovery improvements |
| 12/19/1978 | CA1044471A1 Method and apparatus for recovery of heavy metal ions from dilute aqueous solution |
| 12/12/1978 | US4129441 Recovery of silver from silver containing solutions |
| 11/28/1978 | US4127639 Precipitation as silver sulfide |
| 11/07/1978 | US4124379 Contacting with amalgam of group 2b, 4,5, or 8 metal |
| 10/24/1978 | CA1040837A1 Process for the recovery of group 1-b metal halides from bimetallic salt complexes |
| 09/12/1978 | US4113467 Adsorbing solution onto sodium silicate catalysts, reduction |
| 09/12/1978 | CA1038170A1 Recovery of silver from silver salts |
| 09/05/1978 | US4111688 Method for separating gold from acid aqueous solution |
| 08/29/1978 | US4110109 Oxidation inhibition of steel wool in silver recovery |
| 08/22/1978 | US4108639 Process for recovering platinum group metals from ores also containing nickel, copper and iron |
| 08/22/1978 | CA1036827A1 Process for separating a noble metal from an alloy containing same |