| Patents for C22B 11 - Obtaining noble metals (5,080) |
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| 04/02/2003 | EP1298186A1 Method of removing reactive metal from a metal-coated reactor system |
| 04/01/2003 | CA2222900C Method of biotreatment for solid materials in a nonstirred surface bioreactor |
| 03/27/2003 | WO2003025234A2 Method for obtaining cobalt and nickel from ores and ore concentrates |
| 03/27/2003 | CA2460116A1 Method for obtaining cobalt and nickel from ores and ore concentrates |
| 03/26/2003 | EP1295953A1 Method for producing platinum material reinforced with dispersed oxide |
| 03/26/2003 | EP1294955A1 Precious metal recovery from organics-precious metal compositions with supercritical water reactant |
| 03/26/2003 | EP1218797B1 Method to extract silver from a photographic developer |
| 03/26/2003 | EP1144699B1 Method for extracting anions of ivb to viii metals using alkyl-substituted 1,3-diaminopropanes |
| 03/20/2003 | US20030051581 Gold recovery from thiosulfate leaching |
| 03/19/2003 | EP1190203B1 Protection coating of wear-exposed components used for refining molten metal |
| 03/19/2003 | CN1403604A Method of recovering metal rhodium from waste olefine carbonylating catalyst liquid |
| 03/13/2003 | WO2003020990A1 Method of transforming colloidal silver into ionic silver |
| 03/13/2003 | WO2002077302A3 Recovery of gold from carbon eluate cyanide solution |
| 03/06/2003 | WO2002046483A3 Silver stain removal from dna detection chips by cyanide etching or sonication |
| 03/05/2003 | CN1400320A Method for raising recovery rate of silver from ore containing sulfur, copper, lead, gold and silver |
| 02/27/2003 | US20030039605 Heating fine activated carbon to 600-800 degrees C., incinerating and cooling |
| 02/26/2003 | CN1102176C Preparation of high-purity osmium powder |
| 02/25/2003 | CA2065601C Process of recovering platinum group metal |
| 02/21/2003 | CA2355491A1 Process for the recovery of precious metals from fine carbon |
| 02/19/2003 | EP0970263B1 Electrolytic method for recovering and recycling silver from a nitric solution |
| 02/12/2003 | EP1283274A2 Chlorine-free platinum and platinum alloy powder with increased specific surface area and nitrate melting process for making the same |
| 02/12/2003 | CN1396962A Process for refining silver bullion with gold separation |
| 02/08/2003 | CA2397251A1 Methods for detecting and extracting gold |
| 02/06/2003 | WO2003010346A2 Wet process and reactor for the recovery of platinum group metals from automobile catalytic converters |
| 02/06/2003 | WO2003010345A1 Method for improving metals recovery using high temperature pressure leaching |
| 02/06/2003 | US20030024353 Gelatin encapsulated metal powder for silver recovery from processing solutions |
| 02/06/2003 | CA2454812A1 Method for improving metals recovery using high temperature pressure leaching |
| 02/05/2003 | EP1281779A2 Selective metal leaching process |
| 02/05/2003 | CN1394973A Production method for extracting high-purity silver bead from waste material containing lead and silver |
| 02/04/2003 | CA2396660A1 Platinum and platinum alloy powers with high surface areas and low chlorine content and processes for preparing these powders |
| 02/03/2003 | CA2396665A1 Selective metal leaching process |
| 01/30/2003 | US20030019330 Method for improving metals recovery using high temperature pressure leaching |
| 01/29/2003 | EP0951522B1 Method of removing reactive metal from a metal-coated reactor system |
| 01/23/2003 | US20030015061 Closed catalytic reactor vessel with electrode windings on walls, holds a collecting media as a catalyst to trap or scrub volatile metals or minerals |
| 01/22/2003 | CN1392107A Process for recovering noble metal from noble metal microparticle dispersive liquid |
| 01/21/2003 | US6508993 Steam heating in aqueous concentrated nonacid oxidizer such as sodium chlorate containing solid sodium chloride then adding hydrochloric acid at rate sufficient to prevent outgassing of hydrogen |
| 01/21/2003 | US6508608 Material treatment method and apparatus |
| 01/16/2003 | US20030013166 Biological extraction of metals from soils; obtain soil, insert into bioreactor, expose to bacteria, bioxidize sample, recover metal |
| 01/14/2003 | CA2043654C Process for leaching of precious metals |
| 01/01/2003 | CN1097637C Method for extracting gold from alkaline cyanide liquid |
| 12/27/2002 | WO2002022899A3 Removal of base metals during cyanide/cip processing of gold and silver ores |
| 12/26/2002 | US20020194963 Separating clays and fines from a crushed refractory sulfide ore, forming a heap, adding concentrate of separated sulfide fines to the heap, bioleaching (biooxidation) and hydrometallurgically treating bioleached ore |
| 12/25/2002 | CN1387582A Recovery of zinc from zinc bearing sulphide minerals by bioleaching and electrowinning |
| 12/25/2002 | CN1387581A Bioleaching of sulphide minerals |
| 12/24/2002 | US6497745 Method for processing elemental sulfur-bearing materials using high temperature pressure leaching |
| 12/19/2002 | WO2002100563A1 Method and apparatus for decomposing material containing organic substance |
| 12/18/2002 | EP1190105B1 Recovery of noble metals by lixiviation with thiourea controlled acidic solution |
| 12/17/2002 | CA2215963C Atmospheric mineral leaching process |
| 12/12/2002 | WO2002099144A1 Selective recovery of precious metal(s) |
| 12/12/2002 | CA2449353A1 Selective recovery of precious metal(s) |
| 12/11/2002 | CN1384890A Recovery of copper from copper bearing sulphide minerals by bioleaching with controlled oxygen feed |
| 12/05/2002 | US20020182133 Control of lead nitrate addition in gold recovery |
| 12/05/2002 | US20020179751 Method of recovery of precious metals & heavy minerals |
| 12/05/2002 | US20020179451 Apparatus and method for recovery of gold and silver from ore |
| 12/05/2002 | DE10126931A1 Process for dissolving precious metals and precious metals in mixtures comprises using heat completely or partially from non-pulsed or pulsed microwaves |
| 12/04/2002 | EP1261750A1 Process for refining silver bullion with gold separation |
| 12/04/2002 | CN1383456A Method for producing platinum material reinforced with dispersed oxide |
| 11/27/2002 | EP1259652A1 Process and apparatus for recovery of cyanide and metals |
| 11/27/2002 | CN1382226A Recovery of precious metals from coal barning slag by multiple crushing/suspension stages |
| 11/21/2002 | WO2002066691A3 Sieve tray column and process for recovery of metal value |
| 11/21/2002 | DE10121952A1 Removing platinum and/or palladium from an aqueous nitric acid solution comprises contacting the solution with a weakly basic ion exchanger, and eluting the charged ion exchanger with concentrated aqueous hydrochloric acid |
| 11/19/2002 | US6482372 Process for recovering palladium from a solution |
| 11/19/2002 | US6482250 Nozzle for low pressure flash tanks for ore slurry |
| 11/14/2002 | US20020168309 Method for recovering catalytic metals |
| 11/13/2002 | EP1255697A1 Method for recovering rhodium from reaction products of oxosynthesis |
| 11/06/2002 | CN1377983A Quick dissolving and purifying method for crude gold or alloy |
| 11/05/2002 | US6475449 Concentrate, by treating with nitric acid, then heating the suspension, collecting osmium tetroxide in a hydroxide absorption solution, and alkalinizing the remaining suspension, then finally oxidative extraction of ruthenium |
| 11/05/2002 | US6475448 Heating; adding chlorate; forming ruthenium tetraoxide |
| 11/05/2002 | CA2245101C Gold extraction process |
| 10/30/2002 | CN1376803A Recovery method for catalytic metal |
| 10/24/2002 | US20020153642 Hydrostatic pressure assisted autoclave system for hydrometallurgical processing |
| 10/23/2002 | EP1251185A2 Gelatin encapsulated metal powder for silver recovery from processing solutions |
| 10/20/2002 | CA2359384A1 Apparatus and method for recovery of gold and silver from ore |
| 10/19/2002 | CA2344511A1 Method of recovery of precious metals and heavy minerals |
| 10/16/2002 | CN2516563Y Nobal metal obtaining apparatus of nitric acid device |
| 10/08/2002 | US6461577 Biooxidation |
| 10/08/2002 | US6461400 Process for extracting quantities of precious metals |
| 10/03/2002 | WO2002077302A2 Recovery of gold from carbon eluate cyanide solution |
| 10/03/2002 | WO2000036165A3 Heavy caesium salt containing liquids for use in separation processes |
| 10/02/2002 | EP1244824A1 Dense refractory material for use at high temperatures |
| 10/02/2002 | CN1372653A Method to extract silver from photographic developer |
| 10/01/2002 | US6458183 Oxidizing solid ruthenium source with ozone to form ruthenium tetraoxide, reducing to ruthenium dioxide, purging to remove ozone, reducing to form purified metal |
| 09/26/2002 | WO2001088212A3 Method for thiosulfate leaching of precious metal-containing materials |
| 09/26/2002 | US20020136660 Powdered platinum is poured into water to prepare suspension, zirconium nitrate and urea solutions are added to adjust suspension pH to precipitate zirconium hydroxide, mixture is molded, sintered, forged, rolled; structures for glass molding |
| 09/25/2002 | CN1370845A Refined platinum producing process |
| 09/25/2002 | CN1370828A Intermediate thermophilic acidophilic thiobacillu strin and its application |
| 09/24/2002 | US6455018 Recovery of precious metal and other values from spent compositions/materials |
| 09/18/2002 | EP1240118A1 Aluminium-wettable protective coatings for carbon components used in metallurgical processes |
| 09/17/2002 | US6451275 Involving a sulfur bearing ore body, comprising the steps of providing a precious metal bearing material having intermediate sulfur oxidation products, and exposing the material to sulfur dioxide gas, bisulfite ions or sulfite ions |
| 09/17/2002 | US6451088 Method for improving metals recovery using high temperature leaching |
| 09/13/2002 | CA2340606A1 Control of lead nitrate addition in gold recovery |
| 09/12/2002 | WO2002070756A2 Recovery of metals from jarosite-containing materials |
| 09/12/2002 | US20020125214 Silver stain removal by chemical etching and sonication |
| 09/11/2002 | EP1123740B1 Process for grinding noble metals in liquid medium |
| 09/03/2002 | US6444164 Apparatus for producing high-purity silver materials |
| 09/03/2002 | US6444010 Aqueous solution of hydrogen peroxide, hydrogen fluoride and high concentration of hydrochloric acid or sulfuric acid; dissolving palladium, iridium, osmium, ruthenium and rhenium for removal from silicon surface or silicon oxide film |
| 08/29/2002 | WO2002066691A2 Sieve tray column and process for recovery of metal value |
| 08/29/2002 | US20020119085 Process for recovering palladium from a solution |
| 08/29/2002 | CA2439220A1 Apparatus and process for recovery of metal values |
| 08/27/2002 | US6440376 Method for dissolving noble metals out of segregated ores containing noble metals |