Patents for C01G 35 - Compounds of tantalum (1,004)
10/1996
10/02/1996EP0734354A1 Recovery of spent catalyst
10/01/1996US5560761 Tantalum powder and electrolytic capacitor using same
09/1996
09/25/1996CN1131803A Tantalum powder and electrolytic capacitor using same
09/04/1996CN1130155A Metal niobates and/or tanlatates, their preparation and perovskites formed from them
08/1996
08/14/1996CN1128733A Production of hydrated tantalum and/or niobium oxide and resultant tantalates and niobates
06/1996
06/18/1996US5527567 Reacting alkyls, alkoxides, beta-diketonates or metallocenes of each individual element to be deposited and oxygen
06/05/1996EP0714850A2 Method for producing double metal oxide powder
05/1996
05/23/1996WO1996015068A1 Vanadium dioxide microparticles, method for preparing same, and use thereof, in particular for surface coating
05/23/1996CA2204910A1 Vanadium dioxide microparticles, method for preparing same, and use thereof, in particular for surface coating
05/08/1996CN1121944A Coloured pigments based on oxide-nitrides, the preparation and use thereof
05/07/1996US5514822 Precursors and processes for making metal oxides
04/1996
04/18/1996DE4436392A1 Metal-niobate and/or tantalate used as materials for electro:ceramics, piezoceramics, etc.
04/04/1996DE19536014A1 Tantalum@ powder used as anode material for electrolytic capacitors
04/03/1996EP0649388A4 Metal oxide-polymer composites.
04/02/1996US5503769 Method of making an unactivated yttrium tantalate x-ray phosphor
02/1996
02/22/1996WO1996005334A1 Metal polyoxyalkylated precursor solutions in an octane solvent and method of making the same
02/22/1996CA2197775A1 Metal polyoxyalkylated precursor solutions in an octane solvent and method of making the same
02/21/1996EP0697373A1 Oxynitride-based coloured pigments and process for their preparation
02/14/1996EP0587672B1 Method of producing nanometer-sized oxide particles
01/1996
01/03/1996CN1114503A Metal oxide powder and process for producing the same
08/1995
08/30/1995EP0341266B1 Superconductivity in square-planar compound systems
08/15/1995US5441670 Process for producing an electrically conductive mixed oxide of titanium and tantalum or niobium
08/09/1995EP0666238A1 Metal oxide powder and process for producing the same
08/09/1995EP0665814A1 Precursors and processes for making metal oxides.
08/01/1995US5437848 Recovery of metal values from process residues
06/1995
06/22/1995WO1995016636A1 Recovery of spent catalyst
06/22/1995WO1995016635A1 Recovery of spent catalyst
06/13/1995US5423285 Applying metal carboxylate precursor in solvent of xylenes, methoxyethanol or butyl acetate to integrated circuit wafer, heating to form layer of metal compound
05/1995
05/18/1995DE4404374C1 Recovery and sepn of tantalum and niobium from materials contg. both
04/1995
04/26/1995EP0649388A1 Metal oxide-polymer composites
04/19/1995CN1101634A Process for the synthesis of crystalline ceramic powders of perovskite compounds
04/12/1995EP0591459A4 Process of making niobium oxide.
03/1995
03/08/1995EP0641740A1 Process for the synthesis of crystalline ceramic powders of perovskite compounds
02/1995
02/22/1995CN1027689C Sintered zirconium oxide powder and the preparation thereof
02/16/1995WO1995004700A1 Metal oxide powder and process for producing the same
02/16/1995CA2146539A1 Metal oxide powder and method for the production of the same
01/1995
01/03/1995US5378400 Preparation of metal oxide sols by electrolysis
12/1994
12/13/1994US5372796 Reacting a metal alkoxide with a substoichiometric amount of an acid in the presence of an oxide particle growth terminator and solubilizer
10/1994
10/27/1994WO1994024052A1 Metal oxide-polymer composites
10/27/1994CA2135935A1 Metal oxide-polymer composites
10/18/1994US5356120 Device for producing finely-divided metal and ceramic powder
09/1994
09/28/1994EP0616723A1 Process for fabricating layered superlattice materials
05/1994
05/17/1994CA1329486C Process for recovery of rare metals
05/11/1994WO1994010084A1 Precursors and processes for making metal oxides
05/11/1994CA2145878A1 Precursors and processes for making metal oxides
04/1994
04/13/1994EP0591459A1 Process of making metal oxides
03/1994
03/23/1994EP0587672A1 Method of producing nanometer-sized oxide particles.
02/1994
02/22/1994US5288474 Process for the production of lead metal niobates
02/02/1994EP0580974A1 Metal niobates and/or tantalates, process for their preparation and their use
01/1994
01/20/1994WO1994001190A1 Recovery of metal values from process residues
01/20/1994CA2139642A1 Recovery of metal values from process residues
01/19/1994EP0330698B1 PROCESS FOR PURIFYING (Nb1-xTax)2O5 AND THE PREPARATION OF KNb1-xTaxO3-CRYSTALS THEREFROM
12/1993
12/29/1993EP0575745A1 Process for the preparation of lead-metal-niobates
12/15/1993EP0573818A1 Process for the production of lead perovskites
11/1993
11/18/1993EP0569765A1 Apparatus for manufacturing fine metal and ceramic powder
09/1993
09/16/1993WO1993017959A1 Production of transparent cationically homogeneous refractory oxides of nanometer-scale particle size diameters at reduced temperatures
08/1993
08/17/1993US5236691 Hydrodesulfurization catalyst, intercalation
07/1993
07/06/1993US5225286 Tantalum oxide with yttrium oxide, tungsten oxide and niobium oxide
06/1993
06/24/1993WO1993012538A1 Process for fabricating layered superlattice materials
06/24/1993DE4242555A1 Compsn. for preparing film
06/16/1993EP0546871A1 Process for the preparation of fergusonites and the obtained products
06/09/1993EP0545775A1 Perovskites on the basis of tantalum or niobium and process for its preparation
06/09/1993EP0545135A1 Production of sols of metal oxides by electrolysis
06/07/1993CA2084628A1 Tentalum- or niobium-based perovskites and process for their preparation
06/02/1993EP0543909A1 Preparation of anhydrous niobium and tantalum pentafluorides.
06/02/1993CN1072740A Preparation of metal oxide sols by electrolysis
05/1993
05/31/1993CA2084024A1 Preparation of metal oxide sols by electrolysis
05/18/1993US5211921 From alloy
05/11/1993US5209910 Digestion with hydrofluoric acid, solvent extraction with methyl isobutyl ketone
04/1993
04/28/1993EP0386205B1 Improved process for obtaining impurity-free compounds of ta and/or nb from materials containing these metals
03/1993
03/30/1993US5198269 Process for making sol-gel deposited ferroelectric thin films insensitive to their substrates
03/30/1993US5198158 Forming a layer on magnesium oxide supported on saphire or gadolinium gallium garnet and etching the magnesium oxide with acid
03/17/1993EP0365645B1 A method of manufacturing perovskite lead scandium tantalate
03/16/1993US5194232 Washing hydroxide precipitates with dilute ammonia and water in two stages
02/1993
02/23/1993US5188810 Hydriding iron or nickel alloy, comminuting, carbiding, leaching with acid, oxidizing
01/1993
01/07/1993WO1993000296A1 Process for making niobium oxide
01/07/1993WO1993000292A1 Process of making niobium oxide
12/1992
12/10/1992DE4118185A1 Verfahren zur herstellung nanoskaliger oxidteilchen Process for the preparation of nanoscale oxide particles
11/1992
11/24/1992CA2069266A1 Layer-type transition metal dichalcogenide with house-of-cards structure
10/1992
10/12/1992WO1992021611A1 Method of producing nanometer-sized oxide particles
09/1992
09/08/1992US5145743 Coating of phosphor crystals with light scattering particles adhered; medicine
08/1992
08/25/1992US5141673 Process of preparing tantalate x-ray intensifying phosphors with improved x-ray to light conversion efficiency
06/1992
06/24/1992EP0491309A1 Process of preparing tantalate X-ray intensifying phosphors with improved X-ray to light conversion efficiency
06/03/1992EP0488521A1 A ceramic material
06/02/1992CA1302383C Transition metal dichalcogenide catalysts
05/1992
05/27/1992EP0487213A1 A method of manufacturing free standing perovskite lead scandium tantalate film
05/06/1992EP0484255A2 Ordered corundum magnesium tantalum niobium oxide x-ray intensifying screens
05/02/1992CA2052943A1 Ordered corundum magnesium tantalum niobium oxide x-ray intensifying screens
04/1992
04/29/1992EP0482603A2 X-ray intensifying screens with improved sharpness
04/26/1992CA2053700A1 X-ray intensifying screens with improved sharpness
04/22/1992EP0481044A1 NEW COMPOUND OF THE K-Nb-Si-O SYSTEM AND ITS DERIVATIVES, PROCESS FOR SYNTHESISING THEM AND THEIR APPLICATIONS, IN PARTICULAR IN OPTICS
04/14/1992US5105053 Catalytic oxidative dehydrogenation of light hydrocarbons to form heavier hydrocarbons
04/14/1992US5104832 Sinterable zirconium oxide powder and process for its production
04/08/1992EP0479162A1 Low temperature synthesis of alkali metal niobates and tantalates
04/02/1992CA2051519A1 Low temperature synthesis of alkali metal niobates and tantalates
03/1992
03/17/1992US5096642 Process for producing a high density ceramic of perovskite
03/11/1992CN1059320A Preparation of anhydrous niobium and tantalum pentafluorides
03/05/1992WO1992003382A1 Preparation of anhydrous niobium and tantalum pentafluorides
02/1992
02/25/1992US5091168 Preparation of anhydrous niobium and tantalum pentafluorides
01/1992
01/14/1992US5080880 Niobium Pentachloride, Niobium Pentoxide, Hydrochloric Acid
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