Patents
Sitemap › C01 - Inorganic chemistry › C01G - Compounds containing metals not covered by subclasses or › C01G 25 - Compounds of zirconium
Patents for C01G 25 - Compounds of zirconium (4,186)
09/1990
09/26/1990CN1009728B Process for the manufacture of a metal oxide powder for ceramic materials and metal oxide powder produced by this process
09/18/1990US4957888 Method of manufacturing ceramic powders having the perovskite structure
09/12/1990EP0386174A1 Ultra high purity halides and their preparation
09/11/1990CA1273805A1 Process for the production of a high purity uranium bearing concentrate from zirconium contaminated liquors
09/05/1990EP0261590B1 Process for the preparation of metal oxides or mixed metal oxides
09/05/1990CN1009456B Fine coagulated particles of ultrafine monoclinic zirconia crystals oriented in fiber bundle-like from and method of manufacturing them
09/05/1990CN1009455B Treatment of zircon
09/04/1990CA1273647A1 Production of ceramic powders by emulsion precipitation processes and the products thereof
08/1990
08/23/1990WO1990009350A1 Zirconia sol, preparation thereof, slurry for use in the production of porous ceramic, and porous ceramic produced from said slurry
08/22/1990EP0180900B1 Process for the adjustment of the structure and/or surface characteristics of oxidized materials
08/22/1990CN1009285B Process of preparing black cubic zir onium oxide precious stone
08/16/1990EP0382310A2 Process for preparing monoliths of aerogels of metal oxides
08/07/1990US4946665 Ceramics
08/01/1990CN1008997B Method for producing flaky zirconia type fine crystals
07/1990
07/19/1990DE4000608A1 Arbeitsverfahren zur herstellung von lithiumzirkonat, das damit hergestellte lithiumzirkonat und zwischenprodukt Procedures used for manufacture of lithium zirconate, the lithium zirconate thus produced and between product
07/18/1990EP0377701A1 Grinding process.
07/17/1990US4941916 Sublimation
07/16/1990CA2007763A1 Procedure to prepare lithium zirconate, thus prepared lithium zirconate and intermediate product
07/04/1990EP0376508A1 Process for producing submicron ceramic powders of perovskite compounds with controlled stoichiometry and particle size
06/1990
06/27/1990EP0375158A2 Improved zirconium oxide fibers and process for their preparation
06/26/1990US4937213 Process for preparing titanates and zirconates
06/26/1990US4937212 Zirconium oxide fibers and process for their preparation
06/26/1990US4937062 High speed atomizing of metal salt solution into very hot gases in reactor; conversion to oxides
06/19/1990CA2003559A1 Zirconium oxide fibers and process for their preparation
06/14/1990WO1990006292A1 Process for producing highly crystalline and homogeneous sub-micron doped and undoped piezoelectric ceramic powders with controlled stoichiometry and particle size
06/14/1990WO1990006291A1 Process for producing sub-micron ceramic powders of perovskite compounds
06/13/1990CA2005305A1 Electrically conductive zirconia-based sintered body and process for the production thereof
06/12/1990US4933155 Mixing an aqueous solution of lithium salt with zirconium compound gel, dehydrating, burning and pulverizing
06/12/1990US4933154 Chlorinating zirconium source material, dissolving to form zirconium oxychloride, precipitating, drying, milling and oxidizing
06/09/1990CA2004984A1 Process for producing sub-micron ceramic powders of perovskite compounds with controlled stoichiometry and particle size
06/08/1990CA2005036A1 Process for producing highly crystalline and homogeneous sub-micron doped and undoped piezoelectric ceramic powders with controlled stoichiometry and particle size
06/06/1990EP0371211A2 Process for the production of homogeneous finely divided ceramic powders
06/05/1990US4931414 Thermal extractive gelation process
05/1990
05/31/1990WO1990005699A1 Production of metal oxide powder, and zirconium oxide powder
05/30/1990EP0370480A1 Process for the production of high purity zirconium tetrafluoride and other fluorides
05/29/1990US4929436 Process for the manufacture of a powder of mixed metal oxides, and mixed metal oxide powders
05/23/1990EP0369979A1 Process for preparing a powder containing at least one metal oxide
05/22/1990US4927622 Zirconia fibers
05/22/1990US4927560 Gelation, drying
05/22/1990CA1269216A1 Transparent non-vitreous ceramic particulate
05/18/1990CA2001848A1 Process for the production of a powder containing at least one metal oxide, and zirconium oxide powder obtained
05/16/1990EP0368387A1 Process for preparing a zirconium dioxide precursor
05/15/1990US4925704 Decompositionof metal alkoxide, particle growth in alkaline conditions
05/15/1990US4925647 Process for the production of metal oxides or metal mixed oxides
05/15/1990US4925537 Process for separation of hafnium tetrachloride from zirconium tetrachloride and electrode
05/15/1990CA1269094A1 Process for producing an alumina-zirconia composite sintered material
05/09/1990EP0366934A1 Zirconia sol and method for making the same
05/02/1990EP0366179A1 Process for preparing a precursor of zirconium dioxide
05/01/1990US4921655 Preparation of compact, crystalline and pore-free moldings from oxide ceramic
04/1990
04/24/1990US4920083 Novel process for the production of ceramic flakes
04/18/1990EP0363927A2 Process for the preparation of a suspension containing spherical oxide particles
04/18/1990EP0363926A2 Particulate polycondensates, process for their preparation and use thereof
04/18/1990CN1041335A Micro-emulsion method for preparing zirconium oxide powder
04/17/1990US4917773 Process for introducing zirconium tetrachloride, hafnium tetrachloride and mixtures thereof into a column for the continuous extractive distillation under pressure of said chlorides
04/17/1990CA1267917A1 Chemical preparation of zirconium-aluminum-magnesium oxide composites
04/11/1990EP0362962A2 Process for forming metal oxide powders from the metal alkoxide
04/10/1990EP0341266A4 Superconductivity in square-planar compound systems.
04/04/1990CN1040933A Ginding process
04/03/1990US4913884 Uranium-preextraction in zirconium/hafnium separations process
04/03/1990US4913778 Molten salt scrubbing of zirconium or hafnium tetrachloride
03/1990
03/28/1990EP0360649A1 Process for the preparation of a ceramic material in the hybrid chemical way, and material obtained
03/27/1990US4912078 Mixing magnesium and aluminum hydroxide; autoclaving; compression; sintering
03/21/1990CN1040572A Manufacturing method for ceramics and products thereof
03/20/1990US4910009 Ultra high purity halides and their preparation
03/13/1990US4908338 Forming emulsion of solution of precursor of cadmium zinc borate, niobium pentoxide, manganese oxide, bismuth oxide, and surfactant, drying, introducing into ceramic capacitor material
03/13/1990CA1266569A1 Coated abrasive product incorporating selective mineral substitution
02/1990
02/28/1990EP0355226A1 Methods for preparing lead lanthanum zirconate titanate powders with carbonate processes
02/20/1990US4902655 Fluidized bed chlorination of rare earth ore, separation of yttrium chloride as by-product
02/14/1990EP0354573A2 Stabilized zirconia
02/13/1990US4900534 Preparation of antiperspirants
01/1990
01/16/1990US4894357 Process for adjusting the structural and/or surface character of oxides
01/16/1990US4894209 Process for obtaining a uranium-bearing concentrate of high purity from liquors contaminated with zirconium
01/10/1990CN1038629A Process for preparing submicronic powders of zirconium oxide stabilized with yttrium oxide
01/02/1990US4891343 Tetragonal crystal structure
12/1989
12/28/1989WO1989012505A1 Grinding process
12/27/1989EP0348288A1 Method of preparing zirconia film
12/26/1989US4889665 Process for producing ultrafine particles of ceramics
12/20/1989CN1038074A Reactive derivative of zirconium and its preparation
12/13/1989CN1037888A Sol-gel methd of making ceramics
11/1989
11/28/1989CA1263331A1 Process for upgrading tar sand bitumen
11/21/1989US4882365 Polymerizable radiopaque dental composition
11/21/1989US4882133 Coating sol, shrinkage, scraping
11/16/1989WO1989010897A1 Ultra high purity halides and their preparation
11/15/1989EP0341266A1 Superconductivity in square-planar compound systems.
11/14/1989US4880758 Preparation of ABO3 compounds from mixed metal aromatic coordination complexes
11/14/1989US4880757 Chemical preparation of zirconium-aluminum-magnesium oxide composites
11/14/1989EP0289537A4 Process for the production of zirconium sulphate.
11/14/1989CA1262813A1 Preparation of high purity, homogeneous zirconia mixtures
11/02/1989EP0340119A1 Process and apparatus for the continuous, pressurized introduction of zirconium tetrachloride, hafnium tetrachloride or their mixtures to an extractive distillation column
11/01/1989CN1036706A Method of introduction of zirconium tetrachloride hafnium tetrachloride and mixture of them into distilling column for continuous extraction of said chlorides under pressure
10/1989
10/31/1989CA1262557A1 Transparent non-vitreous zirconia microspheres
10/25/1989EP0338799A2 Sol-gel method of making ceramics
10/25/1989CN1036548A Process for manufacture of zirconium oxide hydrate from granular crystallized zirconium oxide
10/18/1989EP0337472A2 Process for preparing submicronic powders of zirconium oxide stabilized with yttrium oxide
10/17/1989US4874598 Process for producing perovskite-type oxides of the ABO3 type
10/17/1989US4874559 Feeding at flow rate above minimum
10/17/1989US4874475 Using alkali(earth) chlorides as solvent
10/11/1989CN1036234A Process of preparing black cubic zirconium oxide precious stone
10/10/1989US4873064 Powder of coagulated spherical zirconia particles and process for producing them
10/03/1989US4871525 Aluminum zirconium hydroxy halide glycinate complex
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