| Patents for C01G 33 - Compounds of niobium (1,435) |
|---|
| 12/14/1990 | CA2034004A1 Method of hydrolyzing metal halides |
| 12/08/1990 | CA2018346A1 Niobium oxide powder (nb o ) and a process for its preparation |
| 10/09/1990 | US4962228 Catalysts, catalyst supports |
| 10/04/1990 | WO1990011249A1 Method of obtaining complex oxides |
| 10/03/1990 | CN1045762A Process for producing sub-micron ceramic powders of perovskite compounds with controlled stoichiometry and particle size |
| 09/11/1990 | US4956337 Nb-Si-Al-O superconductors with high transition temperatures and process for manufacturing the same |
| 09/11/1990 | US4956326 Corrosion resistant ceramics or graphite |
| 08/29/1990 | EP0272306B1 Oligomerization of olefins |
| 08/29/1990 | EP0271563B1 Layered silicates and their synthesis |
| 08/29/1990 | EP0270659B1 Layered metal oxides containing interlayer oxides and their synthesis |
| 08/16/1990 | EP0382339A1 Sheets of transition metal dichalcogenides |
| 08/14/1990 | US4948570 Process for lowering residual tantalum values in niobium |
| 07/17/1990 | US4942024 Method for refining hydroxides of niobium and tantalum containing transition metals |
| 07/04/1990 | EP0376508A1 Process for producing submicron ceramic powders of perovskite compounds with controlled stoichiometry and particle size |
| 06/27/1990 | EP0375254A2 Rechargeable non-aqueous cell |
| 06/14/1990 | WO1990006291A1 Process for producing sub-micron ceramic powders of perovskite compounds |
| 06/13/1990 | EP0372393A2 Electro-optical polycrystalline barium lanthanum titanium niobate |
| 06/09/1990 | CA2004984A1 Process for producing sub-micron ceramic powders of perovskite compounds with controlled stoichiometry and particle size |
| 06/05/1990 | CA1270001A1 Oligomerization of olefins |
| 05/16/1990 | EP0368448A2 Non-aqueous cell comprising niobium chalcogenide |
| 04/17/1990 | US4918035 Process for the preparation of complex perovskite type compounds |
| 04/11/1990 | EP0271575B1 Layered metal chalcogenides containing interlayer chalcogenides and their synthesis |
| 04/10/1990 | EP0341266A4 Superconductivity in square-planar compound systems. |
| 03/22/1990 | WO1990002823A1 IMPROVED PROCESS FOR OBTAINING IMPURITY-FREE COMPOUNDS OF Ta AND/OR Nb FROM MATERIALS CONTAINING THESE METALS |
| 03/21/1990 | EP0295269B1 Layered metal oxides containing interlayer oxides and their synthesis |
| 03/13/1990 | US4908338 Forming emulsion of solution of precursor of cadmium zinc borate, niobium pentoxide, manganese oxide, bismuth oxide, and surfactant, drying, introducing into ceramic capacitor material |
| 01/09/1990 | US4892795 Non-aqueous cell comprising niobium triselenide |
| 11/15/1989 | EP0341266A1 Superconductivity in square-planar compound systems. |
| 09/06/1989 | EP0330698A1 PROCESS FOR PURIFYING (Nb1-xTax)2O5 AND THE PREPARATION OF KNb1-xTaxO3-CRYSTALS THEREFROM |
| 08/22/1989 | US4859648 Layered metal chalcogenides containing interspathic polymeric chalcogenides |
| 08/01/1989 | US4853199 Method for producing crystalline complex perovskite compounds |
| 07/25/1989 | CA1257766A1 Process for producing fluorides of metals |
| 07/19/1989 | EP0324619A1 Improved process for preparing crystalline mixed metal oxides |
| 07/19/1989 | EP0182836B1 Dielectric composition |
| 07/11/1989 | US4846853 Layered divalent metal hydrogen phosphates |
| 07/05/1989 | EP0323178A2 Methods for producing high temperature superconducting materials |
| 04/26/1989 | EP0313282A2 Oxidation of metal (oxo)halides |
| 04/25/1989 | US4824222 Solid solution of molybdenum, tungsten, zirconium and/or niobium; vanadium and/or titanium |
| 03/14/1989 | US4812426 Lead-containing oxide powder |
| 03/09/1989 | WO1989001914A1 PROCESS FOR PURIFYING (Nb1-xTax)2O5 AND THE PREPARATION OF KNb1-xTaxO3-CRYSTALS THEREFROM |
| 12/21/1988 | EP0295269A1 Layered metal oxides containing interlayer oxides and their synthesis. |
| 09/14/1988 | EP0282218A2 Layered divalent metal compositions |
| 09/07/1988 | EP0280812A1 Superconductivity in square - planar compound systems |
| 08/10/1988 | CN87107765A Super conductivity in squar-planar compound systems |
| 07/25/1988 | EP0271575A4 Layered metal chalcogenides containing interlayer chalcogenides and their synthesis. |
| 07/21/1988 | EP0295269A4 Layered metal oxides containing interlayer oxides and their synthesis. |
| 07/21/1988 | EP0272306A4 Oligomerization of olefins. |
| 07/21/1988 | EP0271563A4 Layered silicates and their synthesis. |
| 07/21/1988 | EP0270659A4 Layered metal oxides containing interlayer oxides and their synthesis. |
| 07/20/1988 | EP0275151A2 Method for producing crystalline complex perovskite compounds |
| 07/14/1988 | WO1988005029A1 Superconductivity in square-planar compound systems |
| 07/13/1988 | CN86108543A Process for preparing optical grade niobium oxide from waste slags of niobium metallurgy |
| 06/29/1988 | EP0272306A1 Oligomerization of olefins. |
| 06/22/1988 | EP0271575A1 Layered metal chalcogenides containing interlayer chalcogenides and their synthesis. |
| 06/22/1988 | EP0271563A1 Layered silicates and their synthesis. |
| 06/15/1988 | EP0270659A1 Layered metal oxides containing interlayer oxides and their synthesis. |
| 06/07/1988 | US4749664 Emulsion-char method for making fine ceramic powders |
| 05/03/1988 | US4741894 Method of producing halide-free metal and hydroxides |
| 05/03/1988 | US4741893 Process for producing fluorides of metals |
| 05/03/1988 | CA1235906A1 Process for separating antimony from columbium solutions |
| 03/23/1988 | CN87105159A Oligomerization of olefins |
| 03/09/1988 | CN87105160A Layered metal oxides containing interlayer oxides and their synthesis |
| 03/09/1988 | CN87105158A Layered metal chalcogenides containing interspathic polymeric chalcogenides |
| 03/01/1988 | US4728562 Dielectric composition |
| 02/24/1988 | CN87105161A Layered metal oxides containing interlayer oxides and their synthesis |
| 02/17/1988 | EP0255877A2 Method for dehalogenation of a halide and catalyst used therefor |
| 02/17/1988 | CN87105162A Layered silicates and their synthesis |
| 01/14/1988 | WO1988000176A1 Oligomerization of olefins |
| 01/14/1988 | WO1988000093A1 Layered metal oxides containing interlayer oxides and their synthesis |
| 01/14/1988 | WO1988000092A1 Layered metal chalcogenides containing interlayer chalcogenides and their synthesis |
| 01/14/1988 | WO1988000091A1 Layered silicates and their synthesis |
| 01/14/1988 | WO1988000090A1 Layered metal oxides containing interlayer oxides and their synthesis |
| 01/13/1988 | CN86107657B Production for sphare niobium pentoxide |
| 01/07/1988 | EP0251432A2 Method of producing halide-free metal oxides |
| 01/05/1988 | CA1230975A1 Process for dissolving tantalum/columbium materials containing alkali metal impurities |
| 12/09/1987 | CN86107657A Purifying method for producing spheroidal niobium oxide |
| 10/14/1987 | EP0241278A2 Method of separating and purifying tantalum and niobium-containing compounds |
| 10/07/1987 | CN86101957A Process of separating and recovering valuable elements from pig iron |
| 09/16/1987 | EP0237081A2 Process for the preparation of complex perovskite type compounds |
| 06/03/1987 | EP0224209A2 Process for recovery of rare metals |
| 05/26/1987 | US4668653 Method for the incorporation of metals into high temperature antimony oxide |
| 05/13/1987 | EP0221696A2 Dielectric compositions |
| 05/05/1987 | US4663130 Process for dissolving tantalum/columbium materials containing alkali metal impurities |
| 01/13/1987 | US4636248 Method for production of dielectric powder |
| 09/16/1986 | CA1211289A1 Direct niobium and tantalum extraction contained in the leaching pulp of a pyrochlore concentrate |
| 08/19/1986 | CA1209785A1 Compositions |
| 06/04/1986 | EP0182836A1 Dielectric composition. |
| 06/03/1986 | US4592904 Boiling hydrofluoric acid and dissolved columbium |
| 05/20/1986 | CA1204588A1 Method for doping tin oxide |
| 12/19/1985 | WO1985005729A1 Dielectric composition |
| 11/21/1985 | EP0161619A2 Catalytic oxidation of solid materials |
| 10/22/1985 | US4548741 With tantalum and niobium, thick film resistors |
| 10/02/1985 | EP0156617A2 Production of metal fluorides |
| 09/17/1985 | US4542009 Synthesis of intercalatable layered stable transition metal chalcogenides and alkali metal-transition metal chalcogenides |
| 07/02/1985 | US4526629 Depositing thin layer of rare earth, exposing to oxygen in dry atmosphere |
| 05/21/1985 | US4518570 Process for separating antimony from columbium solutions |
| 05/21/1985 | CA1187266A1 Pyrohydrolysis of cbo.sub.2f to cb.sub.2o.sub.5 |
| 04/02/1985 | CA1184738A1 Process for producing cbo.sub.2f |
| 01/23/1985 | EP0131685A2 Synthetic expanded layered minerals and process for producing them |
| 01/09/1985 | EP0130507A1 High conductivity thionyl chloride electrolytes |