| Patents for C01F 17 - Compounds of the rare-earth metals, i.e. scandium, yttrium, lanthanum, or the group of the lanthanides (4,902) |
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| 03/01/2000 | EP0981498A1 Low temperature production of metal oxides |
| 02/15/2000 | CA2158125C High ph cerium compound colloidal dispersions and process for preparing the same |
| 02/09/2000 | CN1244177A Composition with base of cerium oxide or cerium and circonium oxides, in extruded form, method of preparation and use as catalyst |
| 02/09/2000 | CN1244176A LaMO3 type composition, M being aluminium, gallium or indium, in powder or sintered form, method of preparation and use as conductor of oxygen |
| 01/19/2000 | CN1241989A Cerium and zirconium oxides, mixed oxides and solid solutions having improved thermal stability for catalysis of exhaust gas systems and methods of producing |
| 01/19/2000 | CN1241987A Use of a beta rare earth sulphide as colouring pigment and method for preparing same |
| 01/19/2000 | CN1048473C Process for the synthesis of crystalline ceramic powders of perovskite compounds |
| 01/11/2000 | CA2055282C Process for the preparation of rare-earth and ammonium twin oxalates, their use in preparing rare-earth oxides, and rare-earth oxides thereof |
| 01/06/2000 | WO2000000431A1 Method for preparing a rare earth sulphide comprising an alkaline element, resulting composition and application as colouring pigment |
| 01/06/2000 | CA2335901A1 Method for preparing a rare earth sulphide comprising an alkaline element, resulting composition and application as colouring pigment |
| 12/23/1999 | WO1999065824A1 Method for separating trivalent lanthanide cations by selective complexing |
| 12/21/1999 | CA2142931C Tetravalent organic soil and its use as additive in hydrocarbon compounds |
| 12/14/1999 | CA2041755C Process for preparing double rare earth and ammonium double oxalates; use thereof for preparing rare earth oxides; double oxalates and oxides thus obtained |
| 12/08/1999 | CN1237539A Method for recovering rare earth carbonate by bastnaesite decomposition through ammonium chloride baking process |
| 11/30/1999 | US5994260 Catalytic exhaust system |
| 11/30/1999 | US5994254 Containing rare earth oxides; electroconductivity |
| 11/25/1999 | WO1999059754A1 Process for the production of ultrafine powders |
| 11/23/1999 | CA2109887C Ceric oxyde crystallites agregate, production process and use for reducing combustion residues |
| 11/16/1999 | US5985113 Modular ceramic electrochemical apparatus and method of manufacture therefor |
| 11/03/1999 | EP0953545A1 A method for improving the screen brightness of gadolinium oxysulfide x-ray phosphors |
| 10/27/1999 | CN1232856A Method for improving screen brightness of gadolinium oxysulfide X-ray phosphors |
| 10/22/1999 | CA2265368A1 A method for improving the screen brightness of gadolinium oxysulfide x-ray phosphors |
| 10/20/1999 | EP0950022A1 Composition with base of cerium oxide or cerium and zirconium oxides, in extruded form, method of preparation and use as catalyst |
| 10/19/1999 | US5968976 Gastrointestinal tract disorders |
| 10/19/1999 | US5968247 Doped with alkali metal; pigments |
| 10/13/1999 | EP0948459A1 Use of a beta rare earth sulphide as colouring pigment and method for preparing same |
| 10/12/1999 | US5965025 Detoxification by solvent extracting metalloid and metal species from a solid or liquid material by a supercritical fluid solvent containing a chelating agent, forming chelates that are soluble in the supercritical fluid |
| 10/06/1999 | EP0947487A1 Fluorite ceramic material |
| 10/06/1999 | EP0947469A2 Abrasive |
| 10/06/1999 | EP0946420A1 Cerium and zirconium oxides, mixed oxides and solid solutions having improved thermal stability for catalysis of exhaust gas systems and methods of producing |
| 10/06/1999 | EP0946419A1 LaMO 3? TYPE COMPOSITION, M BEING ALUMINIUM, GALLIUM OR INDIUM, IN POWDER OR SINTERED FORM, METHOD OF PREPARATION AND USE AS CONDUCTOR OF OXYGEN |
| 10/06/1999 | EP0946289A1 Ceric oxide washcoat |
| 10/05/1999 | US5962343 Process for producing crystalline ceric oxide particles and abrasive |
| 09/28/1999 | CA2150295C Rare earth-based dispersible compound, colloid suspension obtained from this compound, processes for their preparation and their use in catalyst production |
| 09/16/1999 | WO1999046336A1 Sulphide and oxysulphide pigments |
| 09/16/1999 | DE19810317A1 Rare earth metal sulfide pigments useful in paint, lacquer, printing ink, plastics and cosmetics |
| 09/14/1999 | US5951724 Fine particulate polishing agent, method for producing the same and method for producing semiconductor devices |
| 09/14/1999 | CA2125447C Process for treating rare-earth sulfides pigments; new pigments thus obtained and their use |
| 09/14/1999 | CA2121428C Rare-earth metal compositions; process for synthesizing them and use thereof |
| 09/14/1999 | CA2084478C Rare earth sesquisulfides compositions, preparation and applications |
| 08/25/1999 | EP0837833B1 Colloidale dispersion and redispersible composition in the form of a cerium oxide based colloidal dispersion |
| 08/17/1999 | US5938837 Cerium oxide ultrafine particles and method for preparing the same |
| 08/10/1999 | CA2115305C Process for synthesizing zirconium and cerium mixed oxides compositions; compositions thus obtained and use thereof |
| 07/28/1999 | EP0932214A2 Modular ceramic electrochemical apparatus and method of manufacture therefor |
| 07/28/1999 | EP0851840B1 Rare-earth and alkali sulphide, method for preparing same and use thereof as a pigment |
| 07/27/1999 | US5928619 Treating exhaust gases from internal combustion engines |
| 07/21/1999 | EP0930271A2 Compositions based on mixed oxides of zirconium and cerium and use of these compositions |
| 07/14/1999 | CN1044136C Method for preparing rare-earth from mixed rare-earth mineral |
| 07/13/1999 | US5922330 Dispersion of cerium iv oxide and/or a hydrated oxide, having ph of greater than 5 and conductivity of atmost 2ms/cm and being formed of cerium nitrate starating product |
| 07/08/1999 | DE19858560A1 Caustic soda stripping of rare earth-loaded liquid ion exchanger used in solvent extraction |
| 07/06/1999 | US5919727 Ceric oxide washcoat |
| 06/24/1999 | WO1999031195A1 Abrasive, method of polishing wafer, and method of producing semiconductor device |
| 06/24/1999 | CA2605696A1 Process for producing semiconductor device |
| 06/24/1999 | CA2315057A1 Process for producing semiconductor device |
| 06/22/1999 | US5914287 Hydroxide-coated rare earth oxide particles |
| 06/03/1999 | WO1999027313A1 Method and apparatus for cooling by altering the crystal field interaction |
| 06/03/1999 | WO1999027006A1 Light-converting material and composition for producing the same |
| 06/03/1999 | CA2312871A1 Light-converting material and composition for producing the same |
| 06/02/1999 | CN1218452A Synthesis of solid, powdery rare earth carboxylates by precipitation method |
| 06/02/1999 | CN1218007A Production of rare earth nitrades |
| 06/01/1999 | US5908800 Composition precursor and mixed cerium and zirconium oxide-based composition, and procedure for preparation and use thereof |
| 05/18/1999 | US5905000 Nanostructured ion conducting solid electrolytes |
| 05/12/1999 | CN1043367C Vapour-deposition material for the production of optical coatings of medium refractive index |
| 05/11/1999 | US5902498 Methods of joining metal components and resulting articles particularly automotive torque converter assemblies |
| 05/05/1999 | CN1043216C Large specific surface area earth-rare oxides and their preparation process |
| 05/04/1999 | US5900223 Process for the synthesis of crystalline powders of perovskite compounds |
| 04/28/1999 | CN1043156C Rare earth electrolytic extracting process and reactor thereof |
| 04/06/1999 | US5891412 Ceric oxide particulates having improved morphology |
| 03/10/1999 | CN1042442C Ceric oxide crystalline aggregate, process of production and its use |
| 03/09/1999 | US5879647 Method for the preparation of fine globular particles of yttrium oxide |
| 02/24/1999 | CN1042218C Method of forming yttria-gadolinia ceramic scintillator using hydroxide coprecipitation step |
| 02/18/1999 | WO1999007639A1 Composition based on samarium sesquisulphide, preparation method and use as colouring pigment |
| 02/17/1999 | CN1042146C Preparation method for crystal rare earth carbonate |
| 02/17/1999 | CN1042145C Method of recovering cerium from solid mixture containing cerium oxide and fluoride |
| 02/03/1999 | EP0894082A1 Synthesis of solid, powdery rare earth carboxylates by a precipitation method |
| 02/02/1999 | US5866092 Mixed oxide of gallium, gadolinium and ytterbium |
| 01/20/1999 | CN1205678A Organic sol comprising at least one oxygenated rare-earth compound, synthesis method therefor, and use of said sol for catalysis |
| 01/13/1999 | EP0666238B1 Metal oxide powder and process for producing the same |
| 01/12/1999 | CA1340315C Ceric oxide with new morphologicial characteristics, process for producing the same |
| 01/07/1999 | EP0889005A1 Yttrium oxide-aluminum oxide composite particles and method for the preparation thereof |
| 12/29/1998 | US5853946 Photostimulable phosphor |
| 12/23/1998 | EP0854765A4 Process for the production of ultrafine particles |
| 12/23/1998 | CN1202460A Method for producing mixed rare-earth chloride |
| 12/23/1998 | CN1202459A Process for preparing highly pure cerium oxide |
| 12/22/1998 | US5851507 Integrated thermal process for the continuous synthesis of nanoscale powders |
| 12/09/1998 | CN1201441A Rare-earth and alkali metal sulphide, method for preparing same and use thereof as pigment |
| 12/08/1998 | US5846428 Method for modifying the surface of a polymer membrane, and a membrane thus modified |
| 12/02/1998 | CN1040969C Composite metal oxide powder and process for producing same |
| 11/24/1998 | US5840268 Method for preparing an ultrafine powder |
| 11/19/1998 | WO1998051617A1 Low temperature production of metal oxides |
| 11/18/1998 | CN1040745C Process for preparing rareearth ammonium double oxalate |
| 11/03/1998 | US5830342 Redox systems |
| 11/03/1998 | US5830242 Using fluoride complexing agent in aqueous solution |
| 10/28/1998 | EP0874036A1 Fine particulate polishing agent, method for producing the same and method for producing semiconductor devices. |
| 10/22/1998 | DE19814106A1 New perovskite-type solid electrolyte |
| 10/21/1998 | CN1040314C Metal oxide powder and process for producing same |
| 10/14/1998 | CN1195647A Method for preparing large specific area superfine yittrium oxide |
| 09/23/1998 | EP0865412A1 Cerium oxide with pores having a lamellar structure, preparation method therefor and use thereof in catalysis |
| 09/22/1998 | US5811068 Spraying a combustable liquid containing multivalent metals; controlling oxygen concentration to give oxides with smaller than the stoichiometric amount of oxygen. |
| 09/16/1998 | CN1039834C Rare earth boron complex alloy wear-resisting cast iron |