| Patents for C01F 17 - Compounds of the rare-earth metals, i.e. scandium, yttrium, lanthanum, or the group of the lanthanides (4,902) |
|---|
| 09/16/1998 | CN1039804C Composition and precursor based on cerium and zirconium mixed oxide, preparation method and use thereof |
| 09/09/1998 | EP0862537A1 Organic sol comprising at least one oxygenated rare-earth compound, synthesis method therefor, and use of said sol for catalysis |
| 09/09/1998 | CN1192724A Colloidale dispersion and redispersible composition in the from of a cerium oxide based colloidal dispersion |
| 09/08/1998 | US5804153 Catalytic removal of sulfur dioxide form flue gas |
| 08/26/1998 | EP0860187A2 Multi-stage solvent extration of metal value |
| 08/26/1998 | CN1039593C Calcining system and technique for fluidized bed-mobile bed mixed reactor |
| 08/19/1998 | CN1039543C Method for making high-purity rare-earth by separating heavy metal impurity |
| 08/18/1998 | US5795554 Method for preparing the oxysulfides of rare earth elements |
| 08/04/1998 | US5788950 Method for the synthesis of mixed metal oxide powders |
| 08/04/1998 | US5788738 High temperature vapors quenched by adiabatic expansion |
| 07/29/1998 | EP0854765A1 Process for the production of ultrafine particles |
| 07/21/1998 | US5783676 Reacting a carboxylic acid with a base to form a carboxylate salt which is then reacted with a water soluble rare earth salt to form a rare earth carboxylate |
| 07/08/1998 | EP0851840A1 Rare-earth and alkali sulphide, method for preparing same and use thereof as a pigment |
| 07/01/1998 | CN1186099A Manufacture of cerium group polishing materials |
| 06/25/1998 | WO1998019351A3 Nanostructured ion conducting solid electrolytes |
| 06/16/1998 | US5766279 Mixed oxides |
| 06/11/1998 | WO1998024726A1 Composition with base of cerium oxide or cerium and zirconium oxides, in extruded form, method of preparation and use as catalyst |
| 06/10/1998 | CN1184428A Pharmaceutical composition containing selected lanthanum carbonate hydrates |
| 06/02/1998 | US5759936 Lanthanide ceramic material |
| 05/28/1998 | WO1998022392A1 LaMO3 TYPE COMPOSITION, M BEING ALUMINIUM, GALLIUM OR INDIUM, IN POWDER OR SINTERED FORM, METHOD OF PREPARATION AND USE AS CONDUCTOR OF OXYGEN |
| 05/28/1998 | WO1998022391A1 Use of a beta rare earth sulphide as colouring pigment and method for preparing same |
| 05/28/1998 | CA2272459A1 Preparation process for a beta rare earth sulphide usable as a colouring pigment |
| 05/26/1998 | US5756056 Process for recovering rare earth metal from oxide ore by concentration and separation |
| 05/26/1998 | US5755868 Mixing a carbonate or hydroxycarbonate of rare earth metal with alkali metal compound to form a mixture, heating the mixture in presence of gas phase hydrogen sulfide or carbon disulfide to form alkali metal doped rare earth sulfides |
| 05/22/1998 | WO1998020968A1 Ceric oxide washcoat |
| 05/20/1998 | EP0842899A1 Method for the preparation of fine globular particles of yttrium oxide |
| 05/20/1998 | EP0842898A1 Method for the preparation of fine globular particles of yttrium oxide |
| 05/12/1998 | US5750090 Silica-cerium oxide composite particles, method for the preparation thereof and resin composition and a cosmetic composition compounded therewith |
| 05/07/1998 | WO1998019351A2 Nanostructured ion conducting solid electrolytes |
| 05/06/1998 | CN1038261C Impregnation and extraction process for separation of cerium oxide and mixed low-cerium rare earth elements |
| 05/05/1998 | US5746991 Doped with rare earth |
| 05/05/1998 | US5746990 Process for the preparation of rare-earth sulphides from halides |
| 04/29/1998 | EP0837833A1 Colloidale dispersion and redispersible composition in the form of a cerium oxide based colloidal dispersion |
| 04/29/1998 | EP0692035B1 Recovery of cerium from fluoride-containing ores |
| 04/28/1998 | US5744118 Mixing absorbent resin and metal salts, swelling and gelation, adjustment of ph, pyrolysis and roasting |
| 04/23/1998 | WO1998016472A1 Cerium and zirconium oxides, mixed oxides and solid solutions having improved thermal stability for catalysis of exhaust gas systems and methods of producing |
| 04/16/1998 | WO1998015500A1 Compositions and methods for preparing porous metal oxides |
| 04/16/1998 | CA2268090A1 Compositions and methods for preparing porous metal oxides |
| 04/15/1998 | EP0835920A1 A new photostimulable phosphor |
| 04/14/1998 | US5738821 Nozzle for electric dispersion reactor |
| 04/08/1998 | EP0777550A4 Nanoscale particles, and uses for same |
| 04/08/1998 | EP0666239B1 Composite metal oxide powder and process for producing the same |
| 04/07/1998 | US5736240 Amorphous rare earth oxides |
| 03/31/1998 | US5733361 High concentration colloidal dispersion of a cerium compound and a process for its preparation |
| 03/24/1998 | US5730874 Extraction of metals using supercritical fluid and chelate forming legand |
| 03/17/1998 | US5728355 Method for recovering reusable rare earth compounds |
| 03/12/1998 | WO1998009753A1 Integrated thermal process and apparatus for the continuous synthesis of nanoscale powders |
| 03/12/1998 | CA2263902A1 Integrated thermal process and apparatus for the continuous synthesis of nanoscale powders |
| 03/11/1998 | EP0735984B1 Composition precursor and cerium and zirconium mixed oxide based composition, method for its preparation and use thereof |
| 03/11/1998 | CN1037692C Blue-emitting phosphor for use in fluorescent lamp and fluorescent lamp employing same |
| 03/04/1998 | EP0779879A4 Very high temperature and atmospheric pressure superconducting compositions and methods of making and using same |
| 03/03/1998 | US5723101 Method for producing cerium and zirconium oxides, mixed oxides and solid solutions having improved thermal stability |
| 02/10/1998 | US5716547 Heating yttric oxide with water-soluble acid |
| 02/04/1998 | EP0822164A2 Process for producing crystalline ceric oxide particles, abrasive and polishing method |
| 01/21/1998 | EP0820092A1 Cerium oxide abrasive, semiconductor chip, semiconductor device, process for the production of them, and method for the polishing of substrates |
| 01/14/1998 | EP0817639A1 Pharmaceutical composition containing selected lanthanum carbonate hydrates |
| 01/07/1998 | EP0815055A1 Yttrium and/or rare earths aluminates having perovskite structure, preparation thereof and use as pigments |
| 12/11/1997 | WO1997046488A1 Method for preparing small particle size fluoride up-converting phosphors |
| 12/03/1997 | EP0810181A2 Silica-cerium oxide composite particles, method for the preparation thereof and resin composition and cosmetic composition compounded therewith |
| 11/18/1997 | US5688480 Roastinf a mixture of metal elements to form oxides in hydrogen halide and halogen |
| 11/18/1997 | US5688439 Colloidal dispersions of cerium oxide core/titanium oxide sheath particulates and photocatalytic coatings provided thereby |
| 11/18/1997 | US5688316 Pigmented substrates comprising terbium compound colorants |
| 10/29/1997 | CN1163244A Lanthanide series ceramic material |
| 10/28/1997 | US5682593 Extraction of acids and metal salts from aqueous solutions with diethyl dodecylphosphonate |
| 10/14/1997 | US5678242 Contacting aqueous solution of metal ions with one side of porous membrane having organic soluble complexing agent in pores to extract metal ions, contacting other side with aqueous solution of second complexing agent to remove |
| 10/14/1997 | CA2035185C Sulphur monoclinic compounds production process |
| 10/09/1997 | WO1997036850A1 Synthesis of solid, powdery rare earth carboxylates by a precipitation method |
| 10/09/1997 | CA2250934A1 Synthesis of solid, powdery rare earth carboxylates by a precipitation method |
| 10/01/1997 | EP0797649A1 Method of preparing small particle size phosphors |
| 09/30/1997 | CA2104233C Synthetic spinels and processes for making them |
| 09/30/1997 | CA1339478C Process for preparing a ceric oxide |
| 09/24/1997 | EP0796827A1 Lanthanide ceramic material |
| 09/09/1997 | US5665323 Preparation of ammonium rare earth double oxalates and rare earth oxides produced therefrom |
| 09/02/1997 | US5662874 Mixing an oxalate ion precursor compound, a water soluble rare earth compound and an ammonium salt to form a double oxalate precipitate and separating |
| 08/27/1997 | EP0764042A4 Fluid extraction |
| 08/27/1997 | CN1157927A Optical coatings of medium refractive index |
| 08/14/1997 | WO1997029510A1 Cerium oxide abrasive, semiconductor chip, semiconductor device, process for the production of them, and method for the polishing of substrates |
| 08/13/1997 | CN1156761A Recovering method for compound containing rare-earth elements can be reused |
| 08/13/1997 | CN1156749A Method for mfg. cerium abrasive |
| 08/07/1997 | DE19602176A1 Perovskite able to form a temporary second phase |
| 08/05/1997 | US5654456 Precursors and processes for making metal oxides |
| 07/24/1997 | DE19601842A1 Rare earth powder used to produce ceramic material |
| 07/01/1997 | US5644037 Method for the preparation of polyhedral particles of a rare earth ammonium double oxalate |
| 06/25/1997 | EP0779879A1 Very high temperature and atmospheric pressure superconducting compositions and methods of making and using same |
| 06/25/1997 | CN1152884A 流体萃取 Fluid Extraction |
| 06/19/1997 | WO1997021642A1 Microwave dielectric ceramics composed of barium, neodymium, gadolinium, titanium and bismuth oxides |
| 06/18/1997 | CN1152260A Fluid extraction of metal and/or metalloid |
| 06/17/1997 | US5639433 Extraction of rare earth elements using alkyl phosphinic acid or salt/alkyl or aryl phosphonic acid or ester blends as extractant |
| 06/12/1997 | WO1997020772A1 Cerium oxide with pores having a lamellar structure, preparation method therefor and use thereof in catalysis |
| 06/11/1997 | EP0777550A2 Nanoscale particles, and uses for same |
| 06/10/1997 | US5637258 Sol-gel process; phosphors activated with rare earth oxides |
| 06/04/1997 | EP0573610B1 Synthetic spinels and processes for making them |
| 05/29/1997 | WO1997019022A1 Organic sol comprising at least one oxygenated rare-earth compound, synthesis method therefor, and use of said sol for catalysis |
| 05/28/1997 | EP0775753A1 Process for recovering scandium from nickel-containing oxide ore |
| 05/28/1997 | CN1150789A Process for preparing precipitate of metal oxide |
| 05/20/1997 | CA2090146C Manufacturing of zinc-alkaline batteries |
| 05/06/1997 | US5627116 Method of making a translucent polycrystalline alumina |
| 05/06/1997 | US5626826 Zirconium/cerium mixed oxide catalyst/catalyst support compositions having high/stable specific surfaces |
| 04/30/1997 | CN1034744C Method for extracting cerium-rich solution |
| 04/30/1997 | CN1034743C Process for making rare-earth material liquid from bastnae site |