| Patents for C22B 11 - Obtaining noble metals (5,080) |
|---|
| 01/18/1983 | US4369100 Metallurgy recovery |
| 01/18/1983 | US4369061 Recovery of precious metals from difficult ores |
| 01/18/1983 | CA1139569A1 Leaching gold - silver ores |
| 01/11/1983 | US4367941 Apparatus for silver recovery during photographic processing |
| 12/01/1982 | EP0065815A1 Recovering zinc from zinc-containing sulphidic material |
| 10/27/1982 | EP0063450A1 Recovery of precious metal |
| 10/12/1982 | US4353741 Silver coated particles and a process for preparing them |
| 10/12/1982 | US4353740 From ore by oxidative desulfurization, chlorination, condensation of volatile gold chlorides in halide salt |
| 10/06/1982 | EP0061468A1 Recovery of silver from ores and concentrates. |
| 09/21/1982 | US4350524 Process for removal of base metal impurities from molten silver with sulfur hexafluoride |
| 09/07/1982 | US4348228 Yield of metal values from incinerated sludges |
| 09/07/1982 | CA1131033A1 Recovery of silver, copper, zinc and lead from partially roasted pyrite concentrate by acid chloride leaching |
| 08/31/1982 | US4347130 Placer mineral concentrator and process |
| 08/18/1982 | EP0057684A1 Recovery of metal values |
| 08/10/1982 | US4343892 Method and apparatus for silver recovery during photographic processing |
| 08/03/1982 | US4342591 Process for the recovery of gold and/or silver and possibly bismuth contained in sulfuretted ores and/or sulfoarsenides |
| 07/27/1982 | US4341741 Recovery of rhodium from carbonylation residues |
| 07/20/1982 | US4340570 Recovery of rhodium from carbonylation residues |
| 07/06/1982 | US4338125 Thermal deamalgamation and reaction with methane, nitrogen or water vapor |
| 06/29/1982 | US4337085 Recovery of precious metals from spent alumina-containing catalysts |
| 06/29/1982 | CA1126592A1 Chemical gilding process by autocatalytic reduction |
| 06/15/1982 | CA1125519A1 Metal recovery |
| 06/08/1982 | CA1125033A1 Recovery of gold and silver values |
| 05/26/1982 | EP0052253A2 Process for winning metals from aqueous solutions |
| 05/25/1982 | US4331634 Oxime, phase transfer agent |
| 05/25/1982 | US4331520 Process for the recovery of hydrogen-reduced metals, ions and the like at porous hydrophobic catalytic barriers |
| 05/25/1982 | US4331473 Silver removal apparatus and method |
| 05/25/1982 | US4331469 Process for the recovery of silver values from silver-containing material which also contains iron and arsenic |
| 05/11/1982 | US4329321 Method for the recovery of salts of group VIII noble metals from solutions |
| 05/10/1982 | EP0040243A4 Process and apparatus for producing metals at porous hydrophobic catalytic barriers. |
| 04/21/1982 | EP0049807A1 Method for the recovery of salts of group VIII noble metals from solutions |
| 04/20/1982 | US4325732 Precious metal recovery cartridge and method |
| 04/20/1982 | CA1122016A1 Solvent extraction of palladium from platinum group metal-containing solutions |
| 04/15/1982 | WO1982001195A1 Recovery of silver and gold from ores and concentrates |
| 04/14/1982 | EP0049567A1 Process for the extraction of precious metals from solutions thereof |
| 04/07/1982 | EP0049169A2 Hydrometallurgical processing of precious metal-containing materials |
| 04/07/1982 | EP0048823A1 Recovery of precious metals from spent alumina-containing catalysts |
| 03/24/1982 | EP0048103A1 Process for the extraction of precious metals from concentrates thereof |
| 03/16/1982 | US4319923 By making the solution basic, and adding a borohydride to cause precipitation |
| 03/16/1982 | US4319922 Recovery of gold from an etching solution |
| 03/16/1982 | US4319920 Novel electroconductive compositions and powder for use therein |
| 02/18/1982 | WO1982000478A1 Recovery of metal values |
| 02/17/1982 | EP0046025A2 Selective extraction of gold |
| 02/17/1982 | EP0045850A1 Method of separating metals from aqueous solutions |
| 12/30/1981 | EP0042702A1 Process for the recovery of lead and silver from minerals and process residues |
| 12/22/1981 | US4307136 Process for the chemical deposition of gold by autocatalytic reduction |
| 12/22/1981 | US4306902 Process for the production of elemental silver from silver chloride or silver sulphate |
| 12/15/1981 | CA1114176A1 Process for recovering heavy metal ions from dilute aqueous solution |
| 12/15/1981 | CA1114174A1 Recovery of elemental sulfur and metal values from tailings from copper recovery processes |
| 12/01/1981 | US4303441 Metal recovery process |
| 12/01/1981 | CA1113431A1 Ore mill and metal separating device |
| 11/25/1981 | EP0040243A1 Process and apparatus for producing metals at porous hydrophobic catalytic barriers. |
| 10/27/1981 | US4297134 Method of recovering gold |
| 10/20/1981 | US4295881 Process for extraction of platinum group metals from chromite-bearing ore |
| 10/06/1981 | US4293530 Removal of iron as sulfate |
| 10/06/1981 | US4293332 Hydrometallurgical process for recovering precious metals from anode slime |
| 10/06/1981 | CA1110206A1 Method of and apparatus for extraction of gold from placer gravel |
| 10/01/1981 | WO1981002688A1 A liquid suspension of particles of a metal belonging to the platinum group,and a method for the manufacture of such a suspension |
| 09/22/1981 | CA1109274A1 Rhodium recovery from hydroformylation still heel with triaryl phosphite ligand |
| 09/22/1981 | CA1109273A1 Separation and selective recovery of metal ions |
| 09/15/1981 | US4289532 Subjecting oxidized slurry to simultaneous cyanidation and countercurrent activated carbon adsorption |
| 09/15/1981 | US4289531 From industrial waste water by treatment with feathers, hair, hoof meal or horn meal |
| 09/15/1981 | US4289530 Recovering silver from waste photographic solutions |
| 09/15/1981 | CA1108866A1 Process for the treatment of incinerated sewage sludge ash |
| 09/08/1981 | US4288304 Hydrometallurgical process for treatment of sulphur ores |
| 09/01/1981 | CA1107973A1 Recovery of silver, copper and zinc from partially roasted pyrite concentrate by ferric sulphate leaching |
| 08/18/1981 | CA1107077A1 Extraction of gold and silver |
| 08/18/1981 | CA1107076A1 Gold extraction |
| 08/11/1981 | US4283224 Containing precious metals, tin dioxide, lead sulfate by complexing, carbonating, leaching the solid residue, ion exchanging |
| 08/11/1981 | CA1106622A1 Hydrometallurgical method for treating sulphide ores |
| 08/04/1981 | US4282112 Ruthenium recovery process by solvent extraction |
| 07/21/1981 | US4279644 Recovery of silver from photographic processor effluents |
| 06/16/1981 | US4273579 Process for treating liquid containing Au-CN compound |
| 06/16/1981 | US4273578 Oxo synthesis or hydroformylation catalyst residues reacted with sulfur |
| 06/09/1981 | US4272288 Adsorption with zeolites |
| 06/09/1981 | CA1102557A1 Desorption of gold from activated carbon |
| 06/02/1981 | CA1102142A1 Recovery of useful materials from calcines |
| 05/26/1981 | US4269622 Using a leach solution containing ammonium thiosulfate and copper while maintaining a basicity with ammonia and also a sulfite ion concentration; gold and silver |
| 05/26/1981 | CA1101678A1 Separation and purification of ruthenium |
| 05/19/1981 | US4268307 Method of extraction of metals from low grade ores |
| 05/05/1981 | US4265743 Method of and apparatus for extraction of gold from placer gravel |
| 04/30/1981 | WO1981001159A1 Process and apparatus for producing metals at porous hydrophobic catalytic barriers |
| 04/30/1981 | WO1981001155A1 Metal recovery method |
| 04/29/1981 | EP0027769A1 Metal recovery method |
| 04/14/1981 | US4261738 Process for recovering precious metals from bimetallic material |
| 04/07/1981 | US4260139 Refining of metals |
| 03/31/1981 | US4259107 Oxidation, acidification, and chlorination to prevent sequesteringduring subsequent cyanidation |
| 03/24/1981 | US4257807 Precious metals recovery process |
| 03/17/1981 | US4256706 Leaching agglomerated gold - silver ores |
| 03/17/1981 | US4256705 Leaching agglomerated gold - silver ores |
| 03/17/1981 | CA1097508A1 Recovery of metal values |
| 03/03/1981 | CA1096588A1 Recovery of selenium |
| 02/24/1981 | CA1096178A1 Recovery of silver from cuprous chloride solutions by amalgamation |
| 02/10/1981 | CA1095258A1 Recovery and purification of rhodium |
| 02/03/1981 | CA1094815A1 Method of increasing the recoverability of gold from gold-bearing ores |
| 01/20/1981 | CA1094011A1 Dichromate leach of copper anode slimes |
| 01/20/1981 | CA1093827A2 Process for recovery of selected metal values from waste waters |
| 01/07/1981 | EP0020826A1 A hydrometallurgical process for recovering precious metals from anode slime |
| 12/30/1980 | CA1092360A1 Process for recovery of selected metal values from waste waters |
| 12/23/1980 | US4240617 Ultra low volume processing of and cartridge for photographic fixer solution to recover silver therefrom |