| Patents for C22B 61 - Obtaining metals not elsewhere provided for in this subclass (484) |
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| 09/24/2008 | CN100420761C Method for extracting rhenium from eluate of flue ash generated by baking enriched ore of molybdenum |
| 09/18/2008 | US20080223176 Outer surface of each particle has selective and high affinity for the metal by coating with archaea cells |
| 09/03/2008 | CN101255502A Process for comprehensive recovery of indium, cadmium, thallium and zinc from lead system smoke |
| 08/13/2008 | CN101240378A Technique for reclaiming rhenium from multiple mixed acid system |
| 07/16/2008 | CN101220418A Method for separating molybdenum, rhenium from molybdenum mineral |
| 07/03/2008 | US20080156145 Treating molten calcium-silicate based slag with a molten ferrosilicon alloy, the phosphorous in the slag is transferred to the ferrosilicon alloy; removing a calcium-silicate based slag containing less than 3 ppmw phosphorous |
| 05/29/2008 | WO2007084116A3 Method and system for recovering metal from metal-containing materials |
| 05/22/2008 | WO2008059770A1 Method for collecting metal |
| 03/26/2008 | CN101148709A Method and device for extracting high-purity rhenium from tungsten-rhenium alloy |
| 02/20/2008 | EP1888464A2 System and method for separating tellurium waste |
| 02/13/2008 | EP1887092A1 Preparation of boron and sodium from sodium tetrataborate by reduction |
| 01/31/2008 | WO2008011788A1 A reduction retort, a preparation method thereof and a vacuum metal refining reduction furnace using the reduction retort |
| 01/17/2008 | US20080011441 Highly-Filled, Aqueous Metal Oxide Dispersion |
| 01/03/2008 | WO2008000810A1 Recycling of superalloys with the aid of an alkali metal salt bath |
| 01/03/2008 | CA2654516A1 Recycling of superalloys with the aid of an alkali metal salt bath |
| 11/29/2007 | US20070274884 Method and Device for Treating Anode Slime |
| 11/28/2007 | CN100351406C Method for processing anode sludge |
| 11/14/2007 | CN100348749C Method of recovering platinum and rhenium from waste catalyst |
| 11/14/2007 | CN100348747C Cerium reverse extracting method from cerium-carrying fluoric organic phase and cerium purifying method |
| 10/25/2007 | WO2007119846A1 Method of recovering useful materials from scrap of rare earth-iron-boron magnet |
| 10/25/2007 | WO2001016383A3 Process and solution |
| 10/16/2007 | US7282152 Selenium removal method |
| 10/10/2007 | CN101050489A Method for extracting rhenium from eluate of flue ash generated by baking enriched ore of molybdenum |
| 10/04/2007 | US20070231183 Microalloying by heating the iron alloy melt to about 1600-1610 degrees C., afterslagging and deoxidizing, and adding fine particle of iron/titanium, iron/rareearth and iron/boron particles packed in a thin plastic bag into the ladle;cost efficiency; free of molybdenum and nickel; pyrometallurgy |
| 10/03/2007 | EP1026283B1 Method for preparing high purity ruthenium sputtering target |
| 09/19/2007 | CN100338240C Method for removing thallium from a zinc-containing solution |
| 09/18/2007 | US7270728 Photochemical transformation of metallic and non-metallic ions in an aqueous environment |
| 06/19/2007 | US7232544 Apparatus for continuous slag treatment of silicon |
| 06/13/2007 | CN1981060A Method and device for treating anode slime |
| 03/22/2007 | US20070062335 Method for processing anode sludge |
| 01/11/2007 | US20070007878 Method of recycling an exhausted selenium filter mass |
| 01/11/2007 | US20070007121 Photochemical transformation of metallic and non-metallic ions in an aqueous environment |
| 12/13/2006 | CN1876856A Vertical reduction tank and reduction furnace device for metal smelting |
| 11/01/2006 | CN1856585A Method for processing anode sludge |
| 10/19/2006 | DE112004001718T5 Verfahren zum Verarbeiten von Anodenschlamm A method for processing anode sludge |
| 08/31/2006 | US20060191853 Water-in-oil-in-water emulsions of hydroxamated polymers and methods for using the same |
| 08/30/2006 | EP1694425A1 A method of recycling an exhausted selenium filter mass |
| 08/17/2006 | US20060179977 Method for removing thallium from a zinc-containing solution |
| 07/26/2006 | EP1682687A1 Method for removing thallium from a zinc-containing solution |
| 05/31/2006 | CN1780923A Method for removing thallium from a zinc-containing solution |
| 05/10/2006 | CN1769504A Method of recovering platinum and rhenium from waste catalyst |
| 04/12/2006 | EP1645644A2 Preparation of boron and sodium by sodium metaborate reduction for the synthesis of sodium borohydride |
| 03/07/2006 | US7008601 Materials and methods for the separation of copper ions and ferric iron in liquid solutions |
| 01/12/2006 | WO2006003246A1 Method and device for treating anode slime |
| 01/12/2006 | CA2570325A1 Method and device for treating anode slime |
| 12/21/2005 | CN1232444C Method for separating rhenium |
| 11/17/2005 | US20050255017 Method for separating platinum group element |
| 11/10/2005 | US20050249652 Process to recover vanadium contained in acid solutions |
| 10/27/2005 | WO2005047551A8 Method for removing thallium from a zinc-containing solution |
| 09/29/2005 | US20050211018 Injecting ammonium perrhenate and hydrogen containing gas through torch device then quenching; easy to handle, eliminates post treatment, free of toxic by products |
| 09/21/2005 | EP1577408A1 Method for separating platinum group element |
| 08/30/2005 | US6936090 Elution with a concentrated aqueous hydrochloric acid solution and an oxidizer; extend the life of ion exchangers; one step process |
| 08/10/2005 | CN1653198A Method for separating platinum group element |
| 08/10/2005 | CN1214121C Method for producing active mineral liquid from granite |
| 07/13/2005 | CN1637156A Cerium reverse extracting method from cerium-carrying fluoric organic phase and cerium purifying method |
| 06/30/2005 | WO2005058462A1 A method of recycling an exhausted selenium filter mass |
| 06/30/2005 | DE10392375T5 Abtrennverfahren für Elemente der Platingruppe Separation of platinum group elements |
| 05/26/2005 | WO2005047551A1 Method for removing thallium from a zinc-containing solution |
| 04/14/2005 | US20050079114 From aqueous stream; mixing with quaternary ammonia compound; filtration; water pollution control |
| 04/13/2005 | EP1133576A4 Recovering metals from soil |
| 04/07/2005 | US20050074380 Metal oxide processing methods and systems |
| 03/31/2005 | WO2005028686A1 Method for processing anode sludge |
| 03/03/2005 | US20050044991 Detoxification removal by reduction, alkylation or carbonylation; adding carboxylic acid and exposing to ultraviolet light |
| 01/12/2005 | EP1441983B1 Apparatus for continuous slag treatment of silicon |
| 12/23/2004 | US20040258588 Waste forced out through overflow; high purity |
| 12/09/2004 | WO2004106560A1 A process for treating dust |
| 11/17/2004 | CN1175951C Process for preparing high-purity rhenium powder |
| 10/28/2004 | DE10313960A1 Continuous re-melting of material in an electric arc furnace under vacuum comprises uniformly pre-heating material pieces to a temperature corresponding to half the absolute melting temperature of the material before welding |
| 10/14/2004 | US20040202593 Apparatus for purifying ruthenium using ozone |
| 10/12/2004 | CA2348483C Recovering metals from soil |
| 09/21/2004 | US6793799 Electrolytic oxidation reduction sequence; purification of fission products (fp) |
| 08/10/2004 | US6773485 Method for recovering catalytic metals using a porous metal filter |
| 08/04/2004 | EP1441983A1 Apparatus for continuous slag treatment of silicon |
| 07/27/2004 | CA2162270C Process for removing, separating and concentrating metals |
| 06/17/2004 | WO2004050927A1 Method for separating platinum group element |
| 04/08/2004 | WO2004029308A1 Method for osmium distillation into gas phase from sulphur-acid sludge of copper production |
| 04/06/2004 | US6716353 Method for preparing high specific activity 177Lu |
| 01/20/2004 | US6680035 Hydrometallurgy |
| 01/08/2004 | US20040003681 Method for recovering catalytic metals using a porous metal filter |
| 12/10/2003 | EP1228257B1 Atmospheric leach process for the recovery of nickel and cobalt from limonite and saprolite ores |
| 10/01/2003 | CN1445381A Method for recovering catalytic metal using porous metal filter |
| 09/25/2003 | WO2003078670A1 Method for separating platinum group element |
| 07/10/2003 | WO2003055598A1 Recovery of rhenium from a spent catalyst via sublimation |
| 06/26/2003 | US20030119658 Heating, oxidation, recovering |
| 06/11/2003 | CN1422809A Method for separating rhenium |
| 05/29/2003 | US20030099322 Method of separating and recovering rare FP in spent nuclear fuels and cooperation system for nuclear power generation and fuel cell power generation utilizing the same |
| 05/28/2003 | EP1314788A2 A method for recovering catalytic metals using a porous metal filter |
| 05/15/2003 | US20030089202 Elution with a concentrated aqueous hydrochloric acid solution and an oxidizer; extend the life of ion exchangers; one step process |
| 05/14/2003 | EP1310459A1 Process for recovering Rhenium |
| 05/09/2003 | CA2411345A1 Process for isolating rhenium |
| 04/17/2003 | WO2003031332A1 Apparatus for continuous slag treatment of silicon |
| 02/12/2003 | CN1396027A Process for preparing high-purity rhenium powder |
| 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 |
| 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 |
| 09/17/2002 | US6451273 Method of producing an active mineral liquid from granite |
| 08/07/2002 | EP1228257A1 Atmospheric leach process for the recovery of nickel and cobalt from limonite and saprolite ores |
| 06/11/2002 | CA2159619C Method for accelerated bioremediation and method of using an apparatus therefor |
| 04/11/2002 | US20020041840 Atmospheric leach process for the recovery of nickel and cobalt from limonite and saprolite ores |
| 04/02/2002 | US6365042 Sequestering metals |
| 01/30/2002 | CN1333382A Method for producing active mineral liquid from granite |