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Class 505/425 - Producing powder or short fiber (i.e., less than 15 cm) by spraying, dropping, or slinging of solution, suspension, or melt (e.g., spray-drying, atomizing, etc.)


Subclass of Class 505 - Superconductor technology: apparatus, material, process
Definition: Process wherein a liquid solution, suspension, or melt of
No. of patents: 34
Last issue date: 04/07/2009


NumberTitleIssue Date
7514388Method of producing a material of oxide superconductor, method of producing an oxide superconducting wire, and superconducting apparatus
A method of producing a material of an oxide superconductor comprises the following steps: (a) in a solution, ionizing a material containing an atom for constituting the oxide superconductor, (b) by removing a solvent by spraying the solution in a first atmosphere, ...
04/07/2009
7276224Synthesis of nanoporous particles
Methods of producing nanoporous particles by spray pyrolysis of a precursor composition including a reactive precursor salt and a nonreactive matrix salt are provided, wherein the matrix salt is used as a templating medium. Nanoporous aluminum oxide particles produc...
10/02/2007
7122163Rare-earth oxide or sulfide of nano size and process for producing the same through photochemical reaction
A crystalline rare-earth oxide or sulfide which has an average particle diameter of 10 nm or less and in which the rare-earth element has a low valance, in particular, crystalline EuO or EuS of nano size. The rare-earth oxide or sulfide is produced by irradiating an...
10/17/2006
7001585Method of making barium titanate
The present invention provides a method of making barium titanate powder. The method includes adding barium acetate to a solution of oxalic acid and titanium oxychloride to form barium titanyl oxalate and then calcining the barium titanyl oxalate to obtain barium ti...
02/21/2006
6209190Production of MgO dispersed Bi-2223 superconductor
A process for producing Bi-2223 high Tc superconductor in which fine MgO particles (
04/03/2001
6174468Superconductor fiber elongation with a heated injected gas
An improved method and apparatus for producing flexible fibers (30) of superconducting material includes a crucible (12) for containing a charge of the superconducting material. The material is melted in the crucible (12) and falls in a stream (18) throug...
01/16/2001
5814585Bi(Pb)SrCaCuO superconductors
The invention relates to a spray pyrolytic process for the preparation of multi-element metal oxide powders useful as precursors of high temperature superconductor ceramics. Aerosols of aqueous solutions containing corresponding metal salts admixed in the...
09/29/1998
5660774Process for making a sintered body from ultra-fine superconductive particles
A process for producing a sintered body from untra-fine superconductive particles. In the first step of this process, a ceramic precursor material containing yttrium, barium and copper cations, a nitrogen-containing material, a solvent, and an anion capab...
08/26/1997
5614472Spray-pyrolysis process of preparing superconductor precursors
The invention relates to a spray pyrolyric process for the preparation of multi-element metal oxide powders useful as precursors of high temperature superconductor ceramics. Aerosols of aqueous solutions containing corresponding metal salts admixed in the...
03/25/1997
5541154Process for preparing a high-TC superconductor as a precursor material for the oxide-powder-in-tube method (OPIT)
Process for preparing a high-Tc superconductor as a precursor material for the oxide-powder-in-tube method (OPIT). The present invention relates to a process for preparing a high-Tc superconductor as a precursor material for the oxid...
07/30/1996
5523285Rapid formation of phase-clean 110 K (Bi-2223) powders derived via freeze-drying process
A process for the preparation of amorphous precursor powders for Pb-doped Bi2 Sr2 Ca2 Cu3 Ox (2223) includes a freeze-drying process incorporating a splat-freezing step. The process generally includes...
06/04/1996
5306704Efficient incorporation of silver to improve superconducting fibers
An improved method for the efficient incorporation of a metal such as silver in a superconducting material includes blending the metal with a high temperature superconductor or precursor powder and consolidating the same into pellets. The pellets are char...
04/26/1994
5204318Preparation of superconducting oxides and oxide-metal composites
A method of preparing a superconducting oxide by combining the metallic elements of the oxide to form an alloy, followed by oxidation of the alloy to form the oxide. Superconducting oxide-metal composites are prepared in which a noble metal phase intimate...
04/20/1993
5177055Process for the preparation of superconductor precursor metal oxide powders comprising spraying a mixed metal salt solution into a horizontal furnace
Disclosed is a process for the preparation of multi-element metal oxide, high temperature superconductor precursor powder comprising spraying a homogenous solution of a multi-element metal salt solution mixed in a stoichiometric ratio corresponding to the...
01/05/1993
5152973Synthesis of submicron powders under reduced oxygen pressure
The invention process provides a metal oxide, or oxides of more than one more metal, wherein the oxides have a mean particle size less than 1 micron. The oxides are made by steps including (1) reacting an aqueous solution of a metal salt (or salts) that f...
10/06/1992
5140005Ceramic superconductive powder
A superconductive oxide powder is produced by a method comprising spray drying a slip to form agglomerates, feeding the agglomerates sequentially through a first and a second oxygen supported combustion flame for fusing the fine particles in the agglomera...
08/18/1992
5122505Carbonate-free inorganic nitrates or oxides and process thereof
The present invention relates to an improved process to produce an essentially carbon-free nitrate of an alkali metal, alkaline earth metal, transition metal, lanthanide metal, actinide metal, metal, or mixtures thereof, which process comprises: Contactin...
06/16/1992
5087607Process for preparing superconductive thick films
A process of forming on a substrate a coating of a precursor of a crystalline rare earth alkaline earth copper oxide or heavy pnictide mixed alkaline earth copper oxide electrical conductor and converting the precursor to the crystalline electrical conduc...
02/11/1992
5081102Preparation of precursor superconductor metal oxide powders by spray calcination from atomized nitrate solution
A spray calcination process is provided for decomposing a metal nitrate solution to form fine grain multicomponent metal oxide powders of selected composition of particular utility as superconductor precursor powders. Such precursor powders are produced i...
01/14/1992
5077267Process for making composite high temperature superconductor copper wires
A process for forming a composite high temperature superconductor copper wire, said process comprising the steps of (1) directing a submicron sized powder of a superconducting ceramic material through a length of copper tubing to coat the interior surface...
12/31/1991
5071828Process for the production of a crystal-oriented surface layer of a ceramic high temperature superconductor
Process for the production of a polycrystalline, crystal-oriented layer of a high temperature superconductor of the class (Y,RE) Ba2 Cu3 O.apprxeq.7 on a substrate or between two substrates of Ag or an Ag alloy containing ...
12/10/1991
5061682Ceramic precursor mixture and technique for converting the same to ceramic
Ceramic precursor mixtures containing a metal cation, a carbohydrate, and an anion capable of participating in an anionic oxidation-reduction reaction with the carbohydrate for continuous or batchwise drying and pyrolyzing to provide ceramic powders....
10/29/1991
5061683Process for making superconductors using barium hydroxide
There is disclosed an improved process for preparing a superconducting composition having the formula Mw Az Cuv Ox wherein M is selected from the group consisting if Bi, Tl, Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm Yb ...
10/29/1991
5053384Method of producing superconducting fibers of bismuth strontium calcium copper oxide (Bi(2212) and Bi(2223))
Fibers of Bi(2212) have been produce by pendant drop melt extraction. This technique involves the end of a rod of Bi(2212) melted with a hydrogen-oxygen torch, followed by lowering onto the edge of a spinning wheel. The fibers are up to 15 cm in length wi...
10/01/1991
5028584Process and apparatus for producing epitaxial and/or highly textured grown film, free of foreign phases, of a high-Tc -oxide superconductor on a substrate
A process for producing an epitaxial and/or highly texturized grown film, free of foreign phases, of a high-Tc -oxide superconductor on a substrate, in which an ablation process is triggered and maintained on a spender target by means of pulsed...
07/02/1991
5021395Process for making superconductors and their precursors
A process for preparing the superconductive material MBa2 Cu3 Ox, M being, inter alia, yttrium and x being from about 6.5-7 and a precursor material MBa2 Cu3 Oy, y being from about 6-6.5, b...
06/04/1991
5006504Preparing superconducting ceramic materials
A process for the preparation of superconducting ceramic materials by a solid state reaction technique. The process is especially suited for production of powders including ࣙ95% of Ba2 YCu3 O7 for use in producing sinter...
04/09/1991
4985401Method for producing a superconductor of an immiscible alloy and its oxide
A superconductor is produced by electric discharge explosion flame spraying of a composite body of constituents of an immiscible alloy. The electrically discharged composite body is deposited on a substrate and the resultant alloy is oxidized to yield an ...
01/15/1991
4985400Process for producing superconductive ceramics by atomization of alloy precurser under reactive atmospheres or post annealing under oxygen
The invention relates to a process for producing superconductive ceramics wherein, first, a liquid alloy melt is made of metals; this is carried out at a temperature at which the melt is chemically homogeneous. The melt is subsequently atomized with an in...
01/15/1991
4975415Cryochemical method of preparing ultrafine particles of high-purity superconducting oxides
The present invention pertains to a method of preparing particles of superconducting ceramic powders, which method comprises: (a) dissolving the soluble salts of the cations in aqueous medium; (b) obtaining a solution having pH of between about 4 and 7 by optionall...
12/04/1990
4970194Method of producing superconducting fibers of YBA2CU30X
Fibers of YBa2 Cu3 Ox have been produce by pendant drop melt extraction. This technique involves the end of a rod of YBa2 Cu3 Ox melted with a hydrogen-oxygen torch, followed by lowering onto th...
11/13/1990
4960752Process to produce oriented high temperature superconductors
A method to manufacture bulk polycrystalline superconducting materials having properties closely related to the properties of a single crystal of the superconducting material is provided. The method includes forming an oriented anisotropic structure by sp...
10/02/1990
4937225Rapid solidification processing of oxide superconductors
A superconducting oxide is melted in an oxygen-rich environment, rapidly solidified and annealed in an oxygen atmosphere. The resulting material has a fine grain structure, is chemically homogeneous, and has enhanced resistance to environmental degradatio...
06/26/1990
4898851Process for making 90 k superconductors using a spray dried oxalate precursor
There is disclosed an improved process for preparing a superconducting composition having the formula MBa2 Cu3 Ox wherein M is selected from the group consisting of Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu; x is from a...
02/06/1990
 
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