| Patents for C22B 11 - Obtaining noble metals (5,080) |
|---|
| 08/15/1978 | CA1036363A1 Separation of metals |
| 08/15/1978 | CA1036362A1 Refining of metals |
| 08/08/1978 | US4105742 Solvent extraction |
| 08/08/1978 | US4105442 Multistage; conversion with nitric acid to nitrosylruthenium complex, with hydrochloric acid to chloro complex, anion exchanging on resin |
| 08/01/1978 | US4103777 Vibrating disc separator |
| 07/18/1978 | US4101315 Recovery of silver from cuprous chloride solutions by co-crystallization with sodium chloride |
| 06/13/1978 | US4094668 Leaching, roasting, slurrying |
| 05/30/1978 | US4092154 Reducing agent, alkali metal hydrosulfites or borohydrides and hydrazine compounds |
| 04/25/1978 | US4086084 Refining of metals |
| 04/04/1978 | US4082546 Recovery of waste heavy metals from solutions by cementation with aluminum |
| 03/28/1978 | US4081506 Drying, grinding, roasting with sulfur, leaching |
| 03/28/1978 | US4081271 Process for separating and recovering rhodium and iridium from their mixtures with other precious metals |
| 03/14/1978 | US4079121 Useful in cancer research |
| 03/14/1978 | US4078918 Method for precious metal recovery |
| 03/07/1978 | US4077800 Method for the recovery of platinum from spent catalysts |
| 02/28/1978 | US4076605 Dichromate leach of copper anode slimes |
| 02/21/1978 | US4075307 Reaction of beta platinum chloride with gaseous ammonia |
| 02/21/1978 | US4074865 Method of recovering platinum group metal values from a used washcoated catalyst |
| 02/07/1978 | US4072508 Method for recovering palladium from spent palladium catalysts |
| 01/24/1978 | US4070437 Process for the recovery of metal chlorides from jarosite sludges resulting from the sulphuric acid processing of ores |
| 01/24/1978 | US4070182 Recovery of precious metals from metal sulphides |
| 01/17/1978 | US4069040 Method for recovery of platinum and iridium from catalysts |
| 11/01/1977 | US4056261 Recovery of gold and silver from mine-run dumps or crushed ores using a portable ion-exchange carbon plant |
| 10/18/1977 | US4054638 Process for treating residues from the electrolytic processing of zinc, by recovery of the metals therein |
| 10/11/1977 | US4053305 Recovery of copper and silver from sulfide concentrates |
| 09/27/1977 | US4051026 Recovery of silver from silver-containing solutions |
| 09/13/1977 | US4047939 Leaching, sulfuric acid |
| 08/02/1977 | US4039327 Stepwise process for recovering precious metals from solution |
| 08/02/1977 | US4039317 Process for the preparation of silver powder |
| 07/26/1977 | US4038362 Heating, oxidation, chlorination, cyanidation |
| 07/12/1977 | US4035181 Steel wool, amines, ammonium salts, phosphates, ethylene oxides ion |
| 06/28/1977 | US4032122 Method and apparatus for recovering small particles of heavy precious metals |
| 06/14/1977 | US4029494 Process for smelting and recovery of a material containing noble metals |
| 05/17/1977 | US4023961 Method of producing powdered materials |
| 05/10/1977 | US4022443 Apparatus for the concentration and recovery of platinum family metals from ceramic materials |
| 05/03/1977 | US4021235 Operating method for slag cleaning furnace in copper refining |
| 04/26/1977 | US4020105 Oxime |
| 04/26/1977 | US4019971 Amalgamation; inhibiting mercury flouring with electric field |
| 02/15/1977 | US4008077 Chelating agent, aluminum coated with alumina |
| 01/25/1977 | US4004987 Uranium, neptunium, transuranium, ph |
| 01/11/1977 | US4002544 Hydrometallurgical process for the recovery of valuable components from the anode slime produced in the electrolytical refining of copper |
| 01/11/1977 | US4002470 Process for recovering ruthenium |
| 01/11/1977 | US4002469 Silver, water soluble sulfates |
| 12/28/1976 | US3999983 Method of recovering the constituents of catalysts comprising an aluminous carrier, platinum and iridium |
| 12/21/1976 | US3998926 Treatment of material with hydrogen chloride |
| 12/21/1976 | US3998629 From a slurry, rotation |
| 12/21/1976 | US3998628 Leaching with copper or iron chlorides, injecting chlorine |
| 12/21/1976 | US3998622 From rhodium trialkyl phosphite ligand complex catalyst; hollow, porous agglomerates |
| 12/14/1976 | US3997337 Separation and/or purification of precious metals |
| 12/07/1976 | US3996046 Extraction and purification of silver from sulfates |
| 11/16/1976 | US3992197 Silver crystals and production thereof |
| 10/26/1976 | US3988415 Recovery of precious metal values from ores |
| 10/12/1976 | US3985854 Rh from car exhaust catalystsreacting hydrochloric acid and bromine with exhaust catalysts to leach out platinum or rhodium |
| 10/12/1976 | US3985552 Separation of platinum group metals and gold |
| 09/28/1976 | US3982932 Endopeptidase |
| 09/21/1976 | US3981962 Decomposition leach of sulfide ores with chlorine and oxygen |
| 09/07/1976 | US3979498 Recovery of cesium and palladium from nuclear reactor fuel processing waste |
| 09/07/1976 | US3979207 Refining of noble group metals |
| 09/07/1976 | US3979205 Metal recovery method |
| 08/31/1976 | US3978148 Process for removal of rhodium compounds from process streams |
| 08/31/1976 | US3977952 Process for decomposing carbon-containing compounds |
| 07/27/1976 | US3971712 Process for removing sulfur impurities from a fluid by contact with silver articles |
| 07/20/1976 | US3970737 Metal, particularly gold, recovery from adsorbed cyanide complexes |
| 07/13/1976 | US3969107 Combined process for working up pure and complex copper concentrates |
| 07/06/1976 | US3968032 Process for concentrating lead and silver by flotation in products which contain oxidized lead |
| 07/06/1976 | US3967956 Palladium, oxime solvent |
| 06/08/1976 | US3961943 Process for recovering palladium |
| 06/08/1976 | US3961941 Method of producing metallic lead and silver from their sulfides |
| 06/01/1976 | US3960550 Bleaching from photographic substrates using sodium hypochlorite |
| 06/01/1976 | US3960549 Process for the separation and purification of platinum, rhodium and iridium |
| 05/25/1976 | US3958985 Inorganic acids, heat treatment |
| 05/25/1976 | US3958978 Process for copper metal ore reduction |
| 05/18/1976 | US3957505 Gold reclamation process |
| 05/11/1976 | US3956088 Process for the destruction of developed and undeveloped photosensitive film and the recovery of products therefrom |
| 04/27/1976 | US3953502 Cyclopentane derivatives |
| 04/20/1976 | US3951648 Forming chlorinated palladium compound using a chlorinated hydrocarbon gas |
| 03/30/1976 | US3947543 Process for recovering copper and noble metals from organic residues |
| 02/24/1976 | US3940261 Process for preparing crystalline silver particles having electrically conductive surfaces and product |
| 01/27/1976 | US3935006 Process for eluting adsorbed gold and/or silver values from activated carbon |
| 01/06/1976 | US3930845 From merrill slime, agitation with gold chloride, cementing, suspension, chlorination, precipitation |