| Patents for C22B 59 - Obtaining rare earth metals (1,691) |
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| 02/06/2008 | CN101117663A Rare earth backflow extraction method and rare earth fully separating process employing the method |
| 01/30/2008 | CN101113492A Ion exchanger for extracting precious metals |
| 01/23/2008 | CN201010682Y Vacuum distilling and demagging device for macrotype rare earth magnesium intermediate alloy |
| 01/09/2008 | CN101100707A Saponification method of acidic extract for separating rare earth |
| 12/05/2007 | CN100352954C Technology for separating rare earth element by extraction system added with modifier |
| 10/31/2007 | CN200967834Y Rare-earth oxide continuous fluorination device |
| 10/25/2007 | WO2007119846A1 Method of recovering useful materials from scrap of rare earth-iron-boron magnet |
| 10/16/2007 | US7282187 Separating and removing fluorine values from the starting material;leaching to solubilize metal values contained in the remaining material and generate an aqueous solution comprising solubilized metal values; extracting a solubilized metal value from aqueous solution |
| 10/10/2007 | CN101050488A Technique for extracting and separating rare earth elements from non-saponification system |
| 09/26/2007 | CN100339495C Method for recovering useful element from rare earth - transition metal alloy scrap |
| 09/20/2007 | WO2007105714A1 Method of recovering rare earth element from composition containing rare earth fluoride |
| 09/12/2007 | CN101033504A Method of purifying cerium by controlling pH |
| 08/22/2007 | CN1333090C Organic phase fluorine removing method after bastnaesite oxidation roasting-sulfuric acid leaching-extracting |
| 08/15/2007 | EP1817437A1 Method of extraction of europium(iii) and/or yttrium(iii) ions from concentrate of luminophore dust or sludge |
| 08/08/2007 | CN101012509A Method for preparing ultra-thin highly-pure europium oxide by europium-rich sulfuric acid rare earth |
| 08/08/2007 | CN101012503A Ultrasonic leaching-extracting separation method for sulphating roasting rare earth mine |
| 08/08/2007 | CN101012501A Method for separating highly-pure rare-earth oxide from yttrium-rich rare earth mine |
| 08/08/2007 | CN101012500A Method for separating highly-pure rare-earth oxide from low-yttrium middle-heavy rare earth mine |
| 08/08/2007 | CN101012499A Method for separating highly-pure rare-earth oxide from sulphating roasting rare earth mine |
| 07/25/2007 | CN101003028A Method for comprehensive utilization silt from rivers with zero discharge |
| 06/27/2007 | CN1323175C Production method of acid extractant saponifying organic phase used in rare earth extraction separation |
| 06/13/2007 | CN1321201C Method for recovering rear-earth element |
| 05/23/2007 | CN1317405C High vacuum in-situ two-step refining process for high purity material |
| 05/10/2007 | US20070104628 Apparatus and method for recovering rare-earth and noble metals from an article |
| 05/09/2007 | CN1314818C Method for extracting rare metal from waste and old carbide alloy |
| 04/25/2007 | CN1311943C Method for producing metal powder and formed product of raw material for metal |
| 04/17/2007 | US7204891 Remelting of rare earth magnet scrap and/or sludge, magnet-forming alloy, and sintered rare earth magnet |
| 03/28/2007 | CN1936034A Method for preparing embedding ion liquid and neutral phosphor (phosphine) extractant composite material and its use |
| 03/14/2007 | CN1928131A Method for separating rare-earth element and fluorapatite, calcium chloraphosphate and calcium phosphate |
| 02/08/2007 | US20070031329 Method of obtaining gallium-68 and use thereof and device for carrying out said method |
| 02/07/2007 | CN1298871C Method for producing mischmetal using Mianning rare earth ore as raw material |
| 01/03/2007 | EP1739196A1 Rare earth metal member of high surface purity and making method |
| 01/03/2007 | EP1664359B1 Method for separating trivalent americium from trivalent curium |
| 01/02/2007 | US7157395 Crucible for melting rare earth element alloy and rare earth element alloy |
| 01/02/2007 | US7157003 Using mixture of extractant |
| 12/13/2006 | EP1597304B1 Phosphorous dendrimers, preparation method thereof and use of same for the extraction of actinides and lanthanides |
| 12/13/2006 | CN1289699C Process for preparing cerium hydroxide |
| 12/06/2006 | CN1872377A Method for saponifying extraction agent |
| 11/29/2006 | CN1286995C Mixed rare earth concentrate decomposition method |
| 11/09/2006 | US20060252629 Rare earth alloy-melting crucible and rare earth alloy |
| 10/18/2006 | CN1847419A Stepped sulfuric acid treatment and roasting process for decomposing Baotou RE ore concentrate |
| 10/17/2006 | US7122164 Having significant activity for multivalent cations; useful for removing a contaminant metal ion from a contaminated solution |
| 10/11/2006 | CN1844421A Method for extracting scandium from red mud |
| 09/14/2006 | US20060205920 star polymers comprising polyamines having terminal carbamylmethyl phosphine oxide groups, used for extracting metals from aqueous effluents coming from spent nuclear fuel reprocessing plants or spent nuclear fuel dissolution solutions |
| 08/16/2006 | CN1817403A Saponification of organic extractant |
| 07/19/2006 | CN1265002C Remolten rareearth magnet waste and/or scraps, magnet forming alloy and sintered rare earth magnets |
| 07/13/2006 | US20060151326 Electrolytic apparatus for use in oxide electrowinning method |
| 07/05/2006 | CN1796608A Method and equipment for purifying ytterbium and gathering thulium and lutetium |
| 06/08/2006 | WO2006058508A1 Method of extraction of europium(iii) and/or yttrium(iii) ions from concentrate of luminophore dust or sludge |
| 05/31/2006 | CN1780679A Method of obtaining gallium-68 and use thereof and device for carrying out said method |
| 05/24/2006 | CN1257291C Process for enriching and preparing high-purity scandium by use of oxyl substituted acetic acid as extractant |
| 05/24/2006 | CN1257290C Method of extracting rare earth from apatite |
| 05/17/2006 | CN1256446C Reverse leaching impurity-removing rare earth concentrate decomposition method |
| 05/10/2006 | CN1255562C Separating column for separating rare earth |
| 05/10/2006 | CN1255560C Process for recovering rare earth from neodymium-ion-boron waste materials |
| 05/04/2006 | DE19913550B4 Verfahren zur Herstellung von Seltenerdoxysulfid-Pulver Process for the preparation of powder Seltenerdoxysulfid |
| 05/03/2006 | EP1652971A1 Oxide electrolyzing electrolysis device |
| 04/12/2006 | CN2771220Y Unit rare-earth extracting tank |
| 04/05/2006 | CN1249259C Method for direct extraction and separation of rare earth carbonate and rare earth oxide by using acid extractant |
| 03/29/2006 | CN1753937A Phosphorous dendrimers, preparation method thereof and use of same for the extraction of actinides and lanthanides |
| 03/01/2006 | CN1740352A High vacuum in-situ two-step refining process for high purity material |
| 03/01/2006 | CN1740351A Method for recovering rear-earth element |
| 02/15/2006 | CN1733952A Method for extracting rare metal from waste and old carbide alloy |
| 02/08/2006 | CN1730681A Production method of acid extractant saponifying organic phase used in rare earth extraction separation |
| 02/08/2006 | CN1730680A Rare-earth element extraction separation process using nonsaponifying organic extractant |
| 02/08/2006 | CN1240858C Carbon reducting baking process of producing RE chloride with mixed RE concentrate |
| 01/18/2006 | CN1237191C Method for preparing mixed rare earths by modified extracting fatty acid of castor oil |
| 01/18/2006 | CN1237190C One-step conversion and grouping process of extracting RE sulfuric acid solution with di (2-ethylhexyl) phosphoric acid |
| 01/05/2006 | US20060000522 Remelting of rare earth magnet scrap and/or sludge, magnet-forming alloy, and sintered rare earth magnet |
| 01/04/2006 | EP1610886A1 Method of obtaining gallium-68 and use thereof and device for carrying out said method |
| 01/04/2006 | CN1715427A Self protection process for preparing fluorescent grade europium oxide extractor by reducing extracting method |
| 11/23/2005 | EP1597304A2 Phosphorous dendrimers, preparation method thereof and use of same for the extraction of actinides and lanthanides |
| 11/17/2005 | US20050255017 Method for separating platinum group element |
| 11/01/2005 | US6960240 Remelting of rare earth magnet scrap and/or sludge, magnet-forming alloy, and sintered rare earth magnet |
| 09/28/2005 | CN1675131A Process for recovering rare earth oxide from waste liquid containing rare earth element, and process for producing rare earth oxide using same |
| 09/21/2005 | EP1577408A1 Method for separating platinum group element |
| 09/21/2005 | CN1670228A Technology for separating rare earth element by extraction system added with modifier |
| 09/07/2005 | EP1071828B1 Processing route for direct production of mixed rare earth metal oxides by selective extraction |
| 08/17/2005 | CN1656239A Method for recovering useful element from rare earth - transition metal alloy scrap |
| 08/10/2005 | CN1653198A Method for separating platinum group element |
| 08/10/2005 | CN1214399C Method for isolating and purifying 9OY from 90 strontium in multi-curie quantities |
| 07/21/2005 | DE10022677B4 Verfahren zur spanabhebenden Bearbeitung einer Seltenerdmetall-Legierung und Verfahren zur Herstellung eines Seltenerdmetall-Magneten A method of machining a rare earth alloy and method for producing a rare earth magnet |
| 07/13/2005 | CN1639175A Novel phosphonamides, process for producing the same, and use thereof |
| 07/13/2005 | CN1210418C Process for producing permanent magnet |
| 06/30/2005 | DE10392375T5 Abtrennverfahren für Elemente der Platingruppe Separation of platinum group elements |
| 06/08/2005 | CN1624464A 磁共振成像扫描器 Magnetic resonance imaging scanner |
| 05/19/2005 | US20050107599 For (back) extracting rare earth metal ions from aqueous solutions |
| 05/04/2005 | CN1200123C Carburizing chlorination process for extracting and separating cerium and non-Ce rare earth from rare-earth ore |
| 04/27/2005 | CN1610814A Crucible for melting rare earth element alloy and rare earth element alloy |
| 02/17/2005 | WO2005014888A1 Oxide electrolyzing electrolysis device |
| 01/27/2005 | US20050016635 Crucible for melting rare earth element alloy and rare earth element alloy |
| 01/18/2005 | US6843917 Method for separating in an aqueous medium lanthanides and/or actinides by combined complexing-nanofiltration, and novel complexing agents therefor |
| 01/12/2005 | EP1496063A1 Novel phosphonamides, process for producing the same, and use thereof |
| 12/29/2004 | CN1181925C Scandium extraction method of river channel sedimentation |
| 12/28/2004 | US6835228 Process of recovering valuable metals from waste secondary batteries |
| 11/25/2004 | WO2004101202A1 Method for recycling rare earth-transition metal based scrap, magnetic powder for absorbing radio wave and radio wave absorbing material using the same |
| 11/17/2004 | CN1546262A Halocarbon triggered synthesized anthracene lanthanide series metal organic compounds and preparation of nano lanthanide series metal dust through vacuum decomposition of same |
| 11/17/2004 | CN1176238C Technology for preparing rare earth cerium silicon and rare earth lanthanum silicon alloy by rare earth enriching material and products thereof |
| 10/21/2004 | WO2004089517A1 Method of obtaining galliun-68 and use thereof and device for carrying out saif method |
| 10/21/2004 | WO2004076509A3 Phosphorous dendrimers, preparation method thereof and use of same for the extraction of actinides and lanthanides |