C01F 17 - Compounds of the rare-earth metals, i.e. scandium, yttrium, lanthanum, or the group of the lanthanides

Patents for C01F 17 - Compounds of the rare-earth metals, i.e. scandium, yttrium, lanthanum, or the group of the lanthanides (4,902)
12/1995
12/27/1995	CN1113960A Treating tech. for Baotou rare-earth mine sulfuric acid baking extract
12/26/1995	US5478498 Disordered fluorite-type photochemical hole burning crystal containing SM2+ as active ions
12/21/1995	DE4421549A1 Glass compsn.
12/14/1995	WO1995033542A1 Fluid extraction
11/1995
11/29/1995	EP0684072A2 Rare earth-based dispersible compound, colloidal suspension obtained from it, processes for their preparation and their use for making catalysts
11/28/1995	CA2039647C Process for the separation of yttrium
11/22/1995	EP0683151A1 Method for the preparation of polyhedral particles of a rare earth ammonium double oxalate
11/15/1995	EP0681992A1 Colloidal dispersion of cerium oxide and titanium oxide, process for its preparation, its use for coating substrates and thus coated substrates
11/14/1995	US5466428 Morphologically improved ceric oxide particulates
11/08/1995	EP0680930A1 Rare earth sulphide composition containing at least one alkali metal element, process for its preparation and its use as colored pigment
11/07/1995	US5464195 Nozzle for electric dispersion reactor
11/02/1995	WO1995029379A1 Complex oxide precursor and process for preparing the same
09/1995
09/27/1995	CN1109103A Impregnation process for separation of cerium oxide and mixed low-cerium rare earth elements
09/27/1995	CN1029859C Rare earth containing stainless steel and its melting process
09/20/1995	CN1108700A Preparation method for crystal carbonated rare earth
09/13/1995	EP0671205A2 Organic sole of or tetravalent metal oxid and their use as additive in hydrocarbon compositions
09/06/1995	EP0580619B1 Process for producing hydrophobised double-layer hydroxide compounds
08/1995
08/16/1995	EP0667556A1 Highly oriented metal fluoride thin film waveguide articles on a substrate
08/09/1995	EP0666239A1 Composite metal oxide powder and process for producing the same
08/09/1995	EP0666238A1 Metal oxide powder and process for producing the same
08/09/1995	EP0665817A1 Oxide particles and method for producing them
08/09/1995	EP0665814A1 Precursors and processes for making metal oxides.
08/08/1995	US5439656 Method for the preparation of a rare earth oxide powder
07/1995
07/18/1995	US5433931 Recovery of cerium
07/06/1995	WO1995018068A1 Composition precursor and cerium and zirconium mixed oxide based composition, method for its preparation and use thereof
07/04/1995	US5429724 Neodymium recovery process
06/1995
06/28/1995	EP0515651B1 Isosynthesis method in the presence of a catalyst based on an oxide of at least two different metals
06/21/1995	EP0471091B1 Process for producing rare earth oxysulfide phosphor
06/14/1995	CN1103668A Method of extracting cerium-rich solution
06/08/1995	DE4443001A1 Fluorite-type crystal contg. samarium as active ion
06/07/1995	EP0655984A1 Preparation of nanophase solid state materials.
06/07/1995	CN1028769C Method for production of cerium oxide
06/06/1995	US5422332 Absorbers, catalyst
05/1995
05/31/1995	CN1103111A Making rare-earth material liquid from bastnae site
05/31/1995	CN1028656C Wear-resistant low alloy steel
05/24/1995	EP0654445A1 Method for the preparation of cerium carbonate powder
05/24/1995	CN1028543C Process for separation of yttrum
05/23/1995	US5417956 Mixing a metal solution and a precipitation agent solution, shear and depressurization
05/17/1995	EP0652849A1 Process for the preparation of metal sulphides.
05/16/1995	US5415946 Vapor-deposition material for the production of optical coatings of medium refractive index
05/16/1995	US5415851 Mixing rare earth salt with an ammonium phosphate in acidic aqueous solution and precipitating powder
05/09/1995	US5413736 Particulate fluorescent material of (Y1-X" Eux)203 and process of preparing same
04/1995
04/19/1995	CN1101634A Process for the synthesis of crystalline ceramic powders of perovskite compounds
04/06/1995	DE4434071A1 Amorphous rare earth metal oxides
04/04/1995	US5403807 Single phase metal-alumina sol-gel process and material
03/1995
03/28/1995	US5401309 Rare earth metal sulfide pigment compositions
03/15/1995	EP0642468A1 A method for preparing mixed metal oxides
03/15/1995	CN1027890C Process for preparing rare earth ammonium double oxalate and use for preparing rare earth oxidate
03/14/1995	US5397758 Alumina-based compositions and catalysts having high specific surface area
03/08/1995	EP0641740A1 Process for the synthesis of crystalline ceramic powders of perovskite compounds
03/07/1995	US5395532 Mixing hydrolyzable alkoxy compound containing silicon with solubilized metal to form metal silicate particles, precipitating particles from organic phase, drying and sintering precipitate
02/1995
02/22/1995	CN1099072A Method for extracting rare-earth from maceration extract of rare-earth ore
02/16/1995	WO1995004701A1 Composite metal oxide powder and process for producing the same
02/16/1995	WO1995004700A1 Metal oxide powder and process for producing the same
02/16/1995	CA2146749A1 Complex metal oxide powder and method for the production of the same
02/16/1995	CA2146539A1 Metal oxide powder and method for the production of the same
02/14/1995	US5389352 Oxide particles and method for producing them
02/14/1995	US5389298 Colloidal dispersions of cerium (IV) compounds in aqueous media
02/09/1995	WO1995003882A1 Processes for reacting bastnaesite with metal oxides
02/07/1995	US5387330 Mixed ionic conductors
02/07/1995	CA1334243C Rare earth trifluorides having novel morphological characteristics and process for their preparation
02/02/1995	WO1995003252A1 Oxide particles and method for producing them
02/02/1995	DE4325108A1 Process for producing ultrafine oxidic particles
02/01/1995	CN1027547C Emulsion-removing method in process of extracting rare-earth (Ce)
01/1995
01/24/1995	US5384214 Zinc alloy with yttrium hydroxide elecrtolyte
12/1994
12/27/1994	US5376305 Supersaturating in hydroxyl ions
12/27/1994	US5376304 Mixed with phosphates and cationic surfactants; ultraviolet absorber for paints, glass
12/22/1994	WO1994029217A1 Process for the preparation of metal sulphides
12/14/1994	EP0628608A1 Process for treating rare earth sulfide pigments, thus obtained pigments and their use
12/14/1994	EP0628515A1 Cerium and zirconium-containing compounds oxide and method for producing same
11/1994
11/29/1994	US5368736 Process for the separation and purification of yttrium-90 for medical applications
11/24/1994	WO1994026665A1 Neodymium recovery process
11/17/1994	EP0624551A1 Method for the re-treatment of residue generated from the removal of fluorine dissolved in waste water
11/16/1994	CN1095111A Rare earth electrolytic extracting process
11/16/1994	CN1095046A Method for the re-treatment of residue generated from the removal of fluorine dissolved in waste water
11/16/1994	CN1095045A Method for the re-treatment of residue generated from the removal of fluorine dissolved in waste water
11/15/1994	US5364568 Metal tungsten oxide complex for storage of radioactive metals
11/09/1994	EP0623560A1 Method for the re-treatment of residue generated from the removal of fluorine dissolved in waste water
11/08/1994	US5362459 Recovering neodymium from iron-containing grinding swarf by adding sodium hydroxide, grinding to crude oxide, digesting with acetic acid, evaporating to neodymium acetate crystals, removing ferric acetate, adding hydrofluoric acid, drying
11/02/1994	EP0622336A1 Method for the preparation of a rare earth oxide powder
11/02/1994	CN1094380A Method for preparing rare-earth carbonate
11/01/1994	US5360578 Preparation of metal halide phosphor particles of selected particle size range with improved powder flowability
11/01/1994	CA1332781C Colloidal aqueous dispersions of a cerium iv compound and process for its preparation
11/01/1994	CA1332780C Ceric oxides with new morphological features and process for their preparation
11/01/1994	CA1332779C Cerium iv compound and process for its preparation
10/1994
10/19/1994	EP0620254A1 Compositions based on sulfides of rare earths, process for their synthesis and their use
10/18/1994	US5356538 Supercritical fluid extraction
10/13/1994	WO1994023075A1 Recovery of cerium from fluoride-containing ores
10/05/1994	CN1093115A Recovery of cerium from fluoride-containing ores
10/05/1994	CN1093059A Preparation of rare-earth oxide ultramicro powder by carbonate precipitation method
10/04/1994	US5352426 Addition of ammonium carbonate or ammonium hydrogen carbonate to inorganic acid salt of lanthanum, cerium and terbium to precipitate as composite carbonate, heating recovering pH and reheating again; used as phosphor base material
09/1994
09/28/1994	CN1026016C Process for extracting scandium from ore
09/27/1994	US5350971 Blue-emitting phosphor for use in fluorescent lamps and fluorescent lamp employing the same
09/20/1994	US5348581 Pigments
09/14/1994	EP0614961A1 Preparation of metal halide phosphor particles of selected particle size range with improved powder flowability
09/14/1994	EP0614854A1 Process for the synthesis of mixed zirconium und cerium oxides based compositions, the obtained compositions and use thereof
09/07/1994	CN1091768A Ceric oxide crystallite aggregate, process of production and its use in reducing combustion residues
09/06/1994	US5344588 Alkali metal and ammonium hydroxy nitrates with cerium
08/1994
08/31/1994	EP0612688A1 Method for the preparation of spherical particles of a rare earth phosphate
08/30/1994	CA1331688C Hexagonal-bipyramid crystalline scandium oxide powder and a process for preparing the same

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