| Patents for C01F 17 - Compounds of the rare-earth metals, i.e. scandium, yttrium, lanthanum, or the group of the lanthanides (4,902) |
|---|
| 01/24/1989 | US4799530 Gelation, solidification, pulverization, oxalate precipitate |
| 01/18/1989 | EP0299838A1 Process for the electrolytic reduction and separation of europium |
| 01/17/1989 | US4798710 Process for the manufacture of a powder for ceramic materials, containing at least one metal oxide |
| 01/11/1989 | EP0298843A1 Process for separating rare earths by liquid-liquid extraction using solvents containing halogens or carboxylic acids |
| 01/11/1989 | EP0298842A1 Process for separating rare earths by liquid-liquid extraction using fluoride-type solvents |
| 01/11/1989 | EP0298808A1 Process for obtaining cerium (IV) oxide and cerium (IV) oxide with novel morphological characteristics |
| 01/04/1989 | EP0297937A1 Process for obtaining a rare earth oxide and product obtained thereby |
| 12/29/1988 | WO1988010237A1 Improved process for making 90 k superconductors |
| 11/23/1988 | CN88100388A Oxidizing and roasting technique of rare-earth elements |
| 11/23/1988 | CN87101034A Recovering scandium (sc) from titanium iron ore |
| 11/03/1988 | WO1988008323A1 Ion exchange method for separation of scandium and thorium |
| 11/03/1988 | DE3813454A1 Verfahren zur herstellung von anorganischen metallverbindungen mit ultrahoher reinheit Process for the preparation of inorganic metal compounds with ultra-high purity |
| 11/02/1988 | CN88105386A Method for dissolving scandia in hno3 and apparatus thereof |
| 11/02/1988 | CN88101564A Process for separation of rare earth elements by liquid-liquid extraction |
| 10/26/1988 | CN88101566A Rare-earth elements liquid-liquid extracting method |
| 10/18/1988 | US4778671 Preparation of unagglomerated metal oxide particles with uniform particle size |
| 10/06/1988 | DE3709463A1 Process for separating off the group of rare earth elements, scandium and yttrium |
| 10/05/1988 | EP0285339A1 Metal oxide and metal sulfide particles and production thereof |
| 09/28/1988 | EP0284504A1 Process for the liquid-liquid extraction of rare-earth metals |
| 09/28/1988 | EP0284503A1 Process for the liquid-liquid extraction of rare earth metals |
| 09/27/1988 | US4774026 Semiconductor photocatalyst, electromagnetic waves |
| 09/21/1988 | CN87101822A Complete-separation process of rare-earth elements from medium-gadolinium and rich-europium ion type rare-eatrh ore |
| 09/14/1988 | CN86107774B Contact material comprising silver based metallic oxides with mixed rare earth metals |
| 09/13/1988 | US4770861 Solvent extraction; precipitated cesium perchlorate and converting to cesium chloride |
| 09/13/1988 | US4770807 Novel extraction agents and novel propane diamides |
| 08/31/1988 | EP0280673A2 Method for production of inorganic minute globular particles |
| 08/24/1988 | CN87100845A Production of anhydrous chlorides of rase earth elements and the electrolysis thereof |
| 08/23/1988 | US4765931 Optical material and process for making the same |
| 08/23/1988 | US4765909 Ion exchange method for separation of scandium and thorium |
| 08/17/1988 | CN85101874B Separation and extraction of high purity thulium oxide and lutecium oxide by chromatography |
| 08/16/1988 | CA1240480A1 OPTICAL MATERIALS FROM INTERCALATION OF POLYVALENT CATIONS IN .beta. DOUBLE PRIME ALUMINA |
| 08/10/1988 | CN85101611B Separation of high purity dysprosium oxide and holmium oxide by extraction chromatography with 507 extraction elution resin |
| 07/27/1988 | EP0275733A1 Cerium oxide with novel morphological characteristics, and process for its preparation |
| 07/19/1988 | US4758412 Production of rare earth hydroxides from phosphate ores |
| 07/12/1988 | US4756853 Dissolving residue with water or nitric acid, separating sulfate ions |
| 07/05/1988 | US4755492 Yttrium oxide ceramic body |
| 06/21/1988 | US4752454 Heating hydrated fluoride of zirconium, thorium, hafnium, ytterium, scandium or rare earth metal in reactive vapors of hydrofluoric acid, carbon dioxide and a fluoroalkane |
| 06/15/1988 | CN87107972A Rare-earth seperating method with multiple outlets by one step extraction |
| 06/08/1988 | CN86108135A Separation of rare-earth element dysprosium by liquid-liquid extraction separation |
| 06/07/1988 | US4749518 Extraction of cesium and strontium from nuclear waste |
| 06/02/1988 | WO1988003915A1 Ion exchange compositions |
| 06/02/1988 | WO1988003910A1 Process for synthesis of uniform colloidal particles of rare earth oxides |
| 06/01/1988 | CN86107774A Contact material comprising silver based metallic oxides with mixed rare earth metals |
| 05/18/1988 | CN86101332B Process for separation of cerium and rare earths |
| 05/17/1988 | US4744960 Precipitation, solvent extraction |
| 05/11/1988 | CN86107455A Grouping separation purifying gadolinium with solvent extraction |
| 05/04/1988 | EP0265518A1 Congruently melting complex oxides. |
| 05/03/1988 | US4741894 Method of producing halide-free metal and hydroxides |
| 05/03/1988 | US4741893 Process for producing fluorides of metals |
| 04/27/1988 | EP0148833B1 Method of making yttrium silicon oxynitrides |
| 04/13/1988 | EP0263662A2 Yttrium oxide ceramic body |
| 04/13/1988 | EP0263544A1 Process for the production of a powder for ceramic materials, containing at least one metal oxide, and a powder of at least one metal oxide obtained by this process |
| 04/06/1988 | CN86106797A Pressure elution process of ion type re crude ore and its apparatus |
| 03/22/1988 | US4732887 Resin in voids for chromatography |
| 03/09/1988 | CN86105043A Extracting rare-earth elements from sulphuric acid system |
| 03/01/1988 | US4728682 Silfiding homogeneous mixture of nitrates |
| 02/23/1988 | US4726938 Liquid/liquid extraction/purification of impure solutions of rare earth values |
| 02/23/1988 | CA1233025A1 Separation of rare earths by means of liquid-liquid extraction |
| 02/17/1988 | CN86101311A Technology for extracting rubidium and caesium from magmatic rock or weathering crust |
| 02/03/1988 | EP0254836A1 Europium activated barium strontium magnesium fluorobromide photostimulable phosphor |
| 02/03/1988 | CN85102244B Phosphonates lle separation of rare earth elements |
| 01/20/1988 | EP0253552A2 Preparation of unagglomerated metal oxide particles with uniform particle size |
| 01/19/1988 | CA1231514A1 Method of making yttrium silicon oxynitrides |
| 01/12/1988 | US4718996 Recovery of tungsten, scandium, iron, and manganese values from tungsten bearing material |
| 01/12/1988 | US4718995 Recovery of tungsten, scandium, iron, and manganese from tungsten bearing material |
| 01/07/1988 | EP0251432A2 Method of producing halide-free metal oxides |
| 12/30/1987 | CN86104199A Technologic process for complete separation of mixed rare earth elements |
| 12/29/1987 | CA1230742A1 Global extraction process of uranium, ittryum, thorium and rare earths from an organic medium |
| 11/25/1987 | CN86103403A New process of extracting rare earth metal from rare earth ore |
| 11/24/1987 | CA1229489A1 Process for separating and purifying metallic elements by displacement chromatography |
| 11/05/1987 | WO1987006630A1 Congruently melting complex oxides |
| 10/14/1987 | EP0241083A1 Method of producing a coating or a self-sustaining body of cerium-oxyfluoride |
| 10/14/1987 | CN87102206A Metal thermal reduction for rare earth cloride |
| 10/13/1987 | US4699732 Ion exchanging |
| 10/08/1987 | WO1987005890A1 Method of producing a coating or a self-sustaining body of cerium-oxyfluoride |
| 10/06/1987 | US4698175 Neodymium hydroxy/ammonium nitrate |
| 09/30/1987 | EP0239479A2 Aqueous colloidal dispersions of a cerium IV compound, and process for their preparation |
| 09/30/1987 | EP0239478A2 Ceric oxides exhibiting novel morphological characteristics, and process for obtaining them |
| 09/30/1987 | EP0239477A2 Cerium IV compound and process for its preparation |
| 09/23/1987 | EP0238402A1 Process for separating rare earths |
| 09/23/1987 | EP0238367A1 Particular compositions of rare earth oxides, their preparation and their use |
| 09/23/1987 | EP0238185A1 Metallothermic reduction of rare earth chlorides |
| 09/09/1987 | EP0235593A1 Recovery of cesium chloride from impure solutions |
| 08/26/1987 | EP0233498A2 Process and apparatus of photoelectrocalalytically reducing noble metals in a nitric acid solution |
| 08/26/1987 | CN87100620A Process for producing cerium hydroxide |
| 08/19/1987 | EP0233121A1 Process for removing lead from rare earths |
| 08/05/1987 | CN86100671A Precipitating rare-earch by using ammonium bicarbonate |
| 08/05/1987 | CN86100391A Nd-si purple ceramic pigment |
| 07/30/1987 | WO1987004421A1 New particulate compositions of rare earth oxide, preparation and application thereof |
| 07/14/1987 | US4680055 Metallothermic reduction of rare earth chlorides |
| 07/01/1987 | EP0227499A1 Mixed lanthanum-magnesium aluminates, process for their production and lasers using these aluminates |
| 06/30/1987 | US4676957 Electrolytic separation of cerium/rare earth values |
| 06/03/1987 | EP0224209A2 Process for recovery of rare metals |
| 06/02/1987 | CA1222376A1 Global recovery of uranium, yttrium, thorium and rare earths from a phosphated mineral in the course of a wet treatment process for the preparation of phosphoric acid |
| 05/27/1987 | EP0223687A1 Process for the production of rare earth hydroxides by treatment of minerals which contain rare earth phosphates |
| 05/12/1987 | US4664849 Optical materials from intercalation of polyvalent cations in beta double prime alumina |
| 05/05/1987 | US4663137 Process for producing cerium oxide particulates |
| 04/28/1987 | US4661330 Process for the preparation of cerium oxide particulates |
| 04/22/1987 | CN86106896A Preparation of aluminate doped with la, mg, and laser using it |
| 04/07/1987 | US4656012 Process for the recovery of uranium from phosphoric acid solutions |