| Patents for C22B 59 - Obtaining rare earth metals (1,691) |
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| 09/29/2004 | EP1071829B1 Rare earth magnet for mri scanner made from treated pr-nd bearing ore residuum |
| 09/28/2004 | CA2406400C A method for isolating and purifying 90y from 90strontium in multi-curiequantities |
| 09/10/2004 | WO2004076509A2 Phosphorous dendrimers, preparation method thereof and use of same for the extraction of actinides and lanthanides |
| 09/01/2004 | EP1452812A1 Crucible for melting rare earth element alloy and rare earth element alloy |
| 09/01/2004 | CN1164773C Roasting decomposition process of mengite-RE concentrate and mengite-mixed bastnaesite RE concentrate |
| 08/18/2004 | CN1162558C Process for extracting and separating thorium and extracting rare earth chloride from sulfuric and phosphoric mixed acid system |
| 07/14/2004 | CN1511966A Ore dressing process for rare earth crude ore with high iron content |
| 07/01/2004 | US20040124141 Cyclic method for separating chemcial elements present in an aqueous solution |
| 06/17/2004 | WO2004050927A1 Method for separating platinum group element |
| 06/16/2004 | CN1504413A Reclamation process for waste water of rare earth extraction separation |
| 06/10/2004 | US20040110440 Monazite based blanket coatings for thermal protection systems |
| 05/26/2004 | CN1500022A Method and appts. for producing magnetic rare earth alloy powder, method for prodn. bonded magnet, method for producing rare earth sintering magnet, and method and appts. for improving purity of inert |
| 05/26/2004 | CN1151288C Process for decomposing rare-earth ore by acid method |
| 04/06/2004 | US6716407 Monazite or xenotime-based blanket coatings that stiffen ceramic fabrics without causing embrittlement at temperatures of at least as high as 2400 degrees f; thermal protection for space re-entry vehicles |
| 04/06/2004 | US6716353 Method for preparing high specific activity 177Lu |
| 03/03/2004 | CN1478910A Method of decomposing sulfide and fluoride in rare earth mineral concentrate and rare earth mineral concentate ball forming technology |
| 03/03/2004 | CN1478600A Scandium extraction method of river channel sedimentation |
| 02/25/2004 | EP1026706B1 FEEDSTOCK POWDER FOR R-Fe-B MAGNET AND PROCESS FOR PRODUCING R-Fe-B MAGNET |
| 02/05/2004 | DE10009956B4 Verfahren zur Zerstörung von Nitrat in sauren, wässrigen Lösungen, insbesondere Edelmetall-Lösungen A process for the destruction of nitrate in acidic aqueous solutions, in particular precious metal solutions |
| 01/28/2004 | CN1136062C Method for preparation of adhered magnet of recovered raw material powder and recouering and utilizing adhered magnet |
| 01/13/2004 | US6676730 Boride powder |
| 01/07/2004 | CN1133525C Manufacturing method for rare-earth alloy and manufacture of rare-earth magnets thereby |
| 12/18/2003 | WO2003104149A1 Process for recovering rare earth oxide from waste liquid containing rare earth element, and process for producing rare earth oxide using same |
| 12/17/2003 | CN1131326C Technology Process for directly producing mixed rare earth oxide |
| 11/12/2003 | EP1183400B1 Method for separating in an aqueous medium lanthanides and/or actinides by combined complexing-nanofiltration, and novel complexing agents therefor |
| 10/22/2003 | CN1125472C Feedstock powder for R-Fe-B magnet and process for producing R-Fe-B magnet |
| 09/25/2003 | WO2003078671A1 Method for recovering useful element from rare earth - transition metal alloy scrap |
| 09/25/2003 | WO2003078670A1 Method for separating platinum group element |
| 09/12/2003 | WO2003074538A1 Novel phosphonamides, process for producing the same, and use thereof |
| 08/21/2003 | US20030156964 Method and apparatus for producing magnetic rare earth alloy powder, method for producing bonded magnet, method for producing rare earth sintering magnet, and method and apparatus for improving purity of inert gas |
| 08/06/2003 | CN1433965A Method for preparing cerium oxide having defferent shape and graininess by reduction-precipitation stripping |
| 07/29/2003 | US6599450 Method of producing recycled raw material powder for use in bonded magnet and method of recycling bonded magnet |
| 07/10/2003 | WO2003056582A1 Method for recycling rare earth element magnet scrap and bonded magnet resulting therefrom |
| 07/09/2003 | CN1429391A Method for isolating and purifying 90Y from 90 strontium in multi-curie quantities |
| 06/12/2003 | US20030106615 Remelting said scrap by wrapping a particulate flux containing a Group 1a, 2a, or rare earth metal halide of given average particle size, within a magnet-constituent metal, and adding the metal wrapped flux to the molten scrap |
| 06/05/2003 | WO2003046236A1 Method for processing loparite concentrate |
| 06/05/2003 | WO2003046235A1 Method for breaking down loparite concentrate |
| 05/22/2003 | WO2003042617A1 Crucible for melting rare earth element alloy and rare earth element alloy |
| 04/02/2003 | CN1407121A Remoltem rareearth magnet waste and/or scraps, magnet forming alloy and sintered rareearth magnets |
| 03/26/2003 | EP1295658A1 Method and apparatus for producing magnetic rare earth alloy powder, method for producing bonded magnet, method for producing rare earth sintering magnet, and method and apparatus for improving purity of inert gas |
| 03/18/2003 | US6533837 Method of recovering and recycling magnetic powder from rare earth bond magnet |
| 02/05/2003 | CN1394972A Process for separating high-purity yttrium by using oxyl substituted acetic acid as extracting agent |
| 02/05/2003 | CN1394971A Process for extracting and separating thorium and extracting rare earth chloride from sulfuric and phosphoric mixed acid system |
| 01/15/2003 | EP1275741A1 Remelting of rare earth magnet scrap and/or sludge, magnet-forming alloy, and sintered rare earth magnet |
| 01/14/2003 | US6507193 Residuum rare earth magnet |
| 01/08/2003 | EP1273013A2 A method for isolating and purifying ?90 y from ?90 strontium in multi-curie quantities |
| 12/27/2002 | WO2002103068A1 Device for loparite concentrate and other concentrates breaking down by highly volatile acids and compounds |
| 12/19/2002 | US20020189496 Monazite or xenotime-based blanket coatings that stiffen ceramic fabrics without causing embrittlement at temperatures of at least as high as 2400 degrees F; thermal protection for space re-entry vehicles |
| 12/18/2002 | CN1385547A Technology for preparing rareearth cerium silicon and rareearth lanthanum silicon alloy by rareearth enriching material and products thereof |
| 11/14/2002 | WO2002090606A1 Metallothermic method for recovering rare-earth metals from fluorides thereof used for producing alloys and batch for carrying out said method. |
| 11/05/2002 | CA2189631C Process for recovering rare earth metal from oxide ore by concentration and separation |
| 10/29/2002 | US6471583 Method of machining rare earth alloy and method of fabricating rare earth magnet using the same |
| 10/15/2002 | US6464750 Method of preparing metal powders, metal powders prepared in this way and compacts that include these powders |
| 10/09/2002 | CN1373232A Carburizing chlorination process for extracting and separating cerium and non-Ce rare earth from rare-earth ore |
| 09/24/2002 | US6455018 Recovery of precious metal and other values from spent compositions/materials |
| 09/12/2002 | US20020124691 Mechanically separate into cathode and anode material |
| 07/04/2002 | WO2002052050A1 Method for loparite concentrate processing |
| 07/04/2002 | WO2002052049A1 Method for processing nitrate solutions of the rare and non-ferrous metal industry and other chemical industries |
| 07/04/2002 | WO2002042505A8 Method for loparite concentrate processing |
| 05/30/2002 | WO2002042505A1 Method for loparite concentrate processing |
| 05/16/2002 | US20020056185 Residuum rare earth magnet |
| 05/15/2002 | CN1348997A Roasting decomposition process of mengite-RE concentrate and mengite-mixed bastnaesite RE concentrate |
| 04/25/2002 | WO2001080251A3 A method for isolating and purifying ?90y from 90¿strontium in multi-curie quantities |
| 04/23/2002 | US6377049 Removing extraneous elements from rare earth ore to leave elements ce, pr, and nd therein; selectively stripping from said ore a portion of said element nd; alloying said residuum with a transition metal; forming alloy into mixed re magnet |
| 04/03/2002 | EP1019552B1 Method for separating trivalent actinides from at least one trivalent lanthanide by means of (bis)aryldithiophosphonic acid as organophosphate as synergist |
| 03/20/2002 | EP1007747B1 Method for separating actinides and lanthanides by liquid-liquid extraction using calixarenes |
| 03/20/2002 | CN1081241C Ammonium chloride process for extracting rare-earth chloride from bastnaesite fine ore |
| 03/20/2002 | CN1081240C Process for producing metal dysprosium |
| 03/06/2002 | EP1183400A1 Method for separating in an aqueous medium lanthanides and/or actinides by combined complexing-nanofiltration, and novel complexing agents therefor |
| 03/06/2002 | EP0914482B1 Method and apparatus for back-extracting metal chelates |
| 03/06/2002 | CN2480379Y Mine heating furnace for one-stage method production of rare earth ferro-silicon alloy |
| 02/13/2002 | CN1335925A Method and device for melting rare earth magnet scrap and primary molten alloy of rare earth magnet |
| 01/17/2002 | US20020005088 Boride powder |
| 01/09/2002 | CN1077603C Recovering method of valuable composition from rare earth element-containing material |
| 01/03/2002 | WO2002000379A1 Method and apparatus for producing magnetic rare earth alloy powder, method for producing bonded magnet, method for producing rare earth sintering magnet, and method and apparatus for improving purity of inert gas |
| 11/29/2001 | WO2001089747A1 Alloy powder for rare earth magnet and method for extracting the same |
| 11/06/2001 | US6312654 Separation trivalent actinide elements, lanthanide and/or yttrium in acid solutions, extracting |
| 11/06/2001 | US6312653 Method for separating actinides and lanthanides by liquid-liquid extraction using calixarenes |
| 10/30/2001 | US6309614 Strontium nitrate |
| 10/30/2001 | US6309441 Reduction-melting process to form rare earth-transition metal alloys and the alloys |
| 10/25/2001 | WO2001080251A2 A method for isolating and purifying ?90y from 90¿strontium in multi-curie quantities |
| 10/25/2001 | WO2000047785A9 Processing route for direct production of mixed rare earth metal oxides by selective extraction |
| 10/04/2001 | WO2000039514A9 Method and device for melting rare earth magnet scrap and primary molten alloy of rare earth magnet |
| 10/02/2001 | US6296824 Method for producing rare earth oxysulfide powder |
| 09/20/2001 | DE10009956A1 Removal of nitrate from acidic, aqueous, particularly rare earth metal, solutions comprises adding formic acid and urea |
| 09/05/2001 | CN1070536C Method for recovering reusable elements from rate earth-nickel alloy |
| 07/04/2001 | CN1068061C Recovery method of metal values |
| 06/20/2001 | CN1300326A Rare earth magnetic for MRI scanner made from treated Pr-Nd bearing ore residum |
| 06/12/2001 | US6245305 Osteoporosis diagnosis |
| 05/29/2001 | US6238566 Multi-stage solvent extraction of metal value |
| 05/09/2001 | CN1294035A Method for prepn. of adhered magnet of recovered raw material powder and recovering and utilizing adhered magnet |
| 05/02/2001 | EP1096517A2 Method of producing recycled raw material powder for use in bonded magnet and method of recycling bonded magnet |
| 04/11/2001 | EP1091007A1 Method of recovering and recycling magnetic powder from resin-bonded rare earth metal magnet |
| 04/04/2001 | CN1289663A Manufacturing method for rare-earth alloy and manufacture of rare-earth magnets thereby |
| 04/04/2001 | CN1064086C Method for recovering valuable elements from rare-earth and ferrous alloy |
| 01/31/2001 | EP1071829A1 Rare earth magnet for mri scanner made from treated pr-nd bearing ore residuum |
| 01/31/2001 | EP1071828A1 Processing route for direct production of mixed rare earth metal oxides by selective extraction |
| 01/31/2001 | CN1061383C Method and apparatus for re-extracting metal chelate |
| 01/18/2001 | WO2001004366A1 Stripping lanthanide-loaded phosphonic/phosphinic extractant solutions in the presence of phosphine oxide |
| 01/09/2001 | CA2277417A1 Stripping lanthanide-loaded solutions |