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| Number | Title | Issue Date |
| 6740624 | Spraying method to form a thick coating and products obtained A method and an apparatus for spraying materials onto a substrate to produce a coating thereon is described which allows very thick layers of complex metal oxides to be produced. The apparatus and method are particularly suitable for producing superconducting coatin... | 05/25/2004 |
| 6599862 | Method for preparing bismuth-based high temperature superconductors The invention provides a method for stably preparing a bismuth-based high temperature superconductor of a Bi-2223 single-phase or a Bi/Pb-2223 single phase, wherein a second phase is not allowed to reside, at a low cost and efficiently. With the method de... | 07/29/2003 |
| 6559103 | Method for producing superconducting oxide compounds A process is provided for preparing solid superconducting mixed-metal oxides whereby the superconductor can be formed into any predetermined shape by way of viscous sol precursors. The superconductors are also formed by this process into homogeneous phase... | 05/06/2003 |
| 5814585 | Bi(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 |
| 5703021 | Process for making high temperature Bi-Sr-Ca-Cu oxide superconductor A description is given of superconducting substances having a content of Bi, Sr, Ca and Cu, and of processes for their preparation from the metal oxides within a range which is specified by the overall composition Bia (Sr,Ca)b -Cu | 12/30/1997 |
| 5696057 | Producing high TC superconductor bulk composites Uniformity of the interstitial distribution of the second phase within composite superconducting high Tc ceramic compositions is achieved by infiltrating the second phase from a bath of molten, low melting point, surface wetting, metallic salt ... | 12/09/1997 |
| 5614472 | Spray-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 |
| 5523285 | Rapid 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 |
| 5508256 | Oxide high-temperature superconducting material, method of preparing same and superconducting wires A method of producing a high-temperature oxide superconducting material, which comprises the steps of (a) preparing a material corresponding to an oxide superconductor of the perovskite type structure consisting essentially of a first member selected from... | 04/16/1996 |
| 5489573 | Thallium-calcium-barium-copper-oxide superconductor with silver and method A method is disclosed for forming polycrystalline thallium system superconductors having high current carrying capacity and high magnetic field behavior. A precursor deposit is formed comprised of silver, in an amount of about 1 to 20 mole percent of tota... | 02/06/1996 |
| 5449660 | Method of producing compound oxide by using partly citrating process A method of producing a compound oxide of elements including at least one of thallium, bismuth, lead, antimony, yttrium, each of rare earth elements, each of transition metal elements, each of alkali metal elements and each of alkaline earth metal element... | 09/12/1995 |
| 5416063 | Method of producing a layer of superconductive oxide Disclosed is a method for forming a superconductive oxide layer on a substrate. The method comprises applying a precursor solution to a major surface of the substrate such that a metal-containing layer is formed on the surface, and heat treating the subst... | 05/16/1995 |
| 5399388 | Method of forming thin films on substrates at low temperatures A method is provided for forming thin films, such as high temperature superconductors, on a surface of a substrate using pulsed microwaves to control substrate temperature. The method includes vaporizing a liquid source to form a series of vapor pulses, i... | 03/21/1995 |
| 5352657 | Bismuth system oxide superconductors and preparation thereof A bismuth system oxide superconductor comprising the 110 K phase is effectively prepared by a process comprising the steps of mixing a bismuth compound, a strontium compound, a calcium compound, a copper compound and optionally a lead compound, optionally... | 10/04/1994 |
| 5304536 | Process for making superconductor powder An improved process for preparing a superconducting composition having the formula MW AE CuV OK wherein M is selected from the group consisting of Bi, Tl, Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm Yb and Lu; A is at lea... | 04/19/1994 |
| 5300483 | Process for preparing shaped superconductor materials via nonequilibrium precursors A method is provided for preparing a precursor of a superconductor containing atoms of oxygen, atoms of copper and atoms of at least two other metals and sufficient atoms of oxygen so that up to, but no more than, one atom of copper is in the trivalent st... | 04/05/1994 |
| 5290759 | Process for making high temperature superconducting powders Superconducting precursors, which can be made into metal oxide superconductors such as YBa2 Cu3 O6+x, and a process for their manufacture by the coprecipitation of 1-2-3 nitrates using inexpensive precipitating agents such... | 03/01/1994 |
| 5278138 | Aerosol chemical vapor deposition of metal oxide films A process of preparing a film of a multicomponent metal oxide including: forming an aerosol from a solution comprised of a suitable solvent and at least two precursor compounds capable of volatilizing at temperatures lower than the decomposition temperatu... | 01/11/1994 |
| 5268354 | Process for making superconducting Tl-Pb-Sr-Ca-Cu-O films A process making thin film elements of an oxide superconductor (Tl.5 Pb0.5)Sr2 CaCu2 O7, (Tl.5 Pb0.5)Sr2 Ca2 Cu3 O9 or a mixture thereof. T... | 12/07/1993 |
| 5262396 | Plasma-enhanced CVD of oxide superconducting films by utilizing a magnetic field A method for forming a superconducting oxide material including introducing an oxygen or an oxidizing gas and a reactive gas or reactive solution or reactive minute particles into a plasma generating chamber; applying a magnetic field to the plasma genera... | 11/16/1993 |
| 5256260 | Method and apparatus for the electrodeposition of bismuth based materials and superconductors The electrodeposition of bismuth based materials and superconductors is achieved under isothermal, constant potential conditions using a three electrode, one compartment cell geometry operating at temperature below about 450° C.... | 10/26/1993 |
| 5236890 | Method of producing superconductor of metal oxides A method of producing a superconductor of metal oxides which includes subjecting an organic solvent solution containing (a) an alkoxide of a rare earth element, (b) an alkoxide of an alkaline earth metal and (c) copper alkoxide or cupric nitrate to hydrol... | 08/17/1993 |
| 5232909 | Method for manufacturing superconducting ceramics elongated body A superconducting ceramics elongated body comprising a flexible ceramics elongated substrate and an oxide ceramics superconducting layer formed at least on a part of the surface of the ceramics elongated substrate to longitudinally extend along the cerami... | 08/03/1993 |
| 5229335 | Ceramic materials and their synthesis by a xerogel process The invention provides a process for producing high phase purity ceramic materials through the utilization of organic gelling agents. The process comprises the following steps: (a) dissolving stoichiometric amounts of metal salts in a solvent to form a so... | 07/20/1993 |
| 5229359 | Solution and its use to produce superconducting filaments and coatings Solutions containing the cations of the metals Y, Ba, Cu in the atomic ratio 1:2:3 or the cations of the metals Bi, Sr, Ca and Cu having the atomic ratios of a high-temperature superconductor bound to polyacrylic acid in water as dispersant and having a v... | 07/20/1993 |
| 5219829 | Process and apparatus for the preparation of pulverulent metal oxides for ceramic compositions The invention relates to a process and an apparatus for converting metal nitrate or mixed metal nitrate solutions into the corresponding metal oxides in a microwave field. The invention consists in heating, while the feed stream is being metered in, in su... | 06/15/1993 |
| 5210069 | Preparation method of high purity 115 K Tl-based superconductor A preparation method for high-purity Tl-based superconductor phase of 115 K, and the precursor thereof. The process comprises a specific composition of precursors, represented by the formula: (Tla Pbb Bic)Sr2-x Ca | 05/11/1993 |
| 5208215 | Process for fabricating flexible BI-PB-SR-CA-CU-O superconducting tape A superconducting tape is fabricated with a composition of Bi1.81 Pb0.43 Sr1.71 Ca2.14 Cu3 Ox. The powder of composition is filled into a silver tube and the silver tube is processed by rol... | 05/04/1993 |
| 5200390 | Co-precipitation process for preparing superconductor powder A fine stoichiometric superconductor powder may be co-precipitated from the addition of appropriate metal compound powders in ammonium carbonate. The co-precipitated powder is very homogeneous because the reaction progresses in liquid solution. For exampl... | 04/06/1993 |
| 5189010 | Process for preparing superconductive thick films A process of forming on a substrate a coating of a precursor of a crystalline rear earth alkaline earth copper oxide or heavy pnictide mixed alkaline earth copper oxide electrical conductor and converting the precursor to the crystalline electrical conduc... | 02/23/1993 |
| 5177055 | Process 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 |
| 5171735 | Method of forming hollow metal oxide superconductors (MOS) and the like by polymer-metal-complex (PMC) techniques and novel hollow MOS structures produced thereby A method for forming a high Tc metal oxide superconductor in the form of a hollow fiber. The method includes the steps of: forming a polymer-metal complex precursor; filling a decomposable hollow fiber mold with the precursor; and heating the f... | 12/15/1992 |
| 5168095 | Method for synthesizing a composite oxide by citrating process A composite oxide synthesized by a citrating process and utilized in functional ceramics materials is prepared by the following process. Co-precipitants or mixtures of at least one component selected from the group consisting of carbonates, basic copper a... | 12/01/1992 |
| 5162299 | Preparation of superconducting oxide precursor materials by pyrolysis from concentrated nitric acid solution A superconducting oxide precursor material is prepared by dissolving soluble compounds containing the non-oxygen elements of the oxide in concentrated nitric acid, in which a decomposing agent for the nitrate of the nitric acid selected from urea and sucr... | 11/10/1992 |
| 5162295 | Superconducting ceramics by sequential electrodeposition of metals, followed by oxidation The invention provides a method for forming deposits of superconducting ceramics by sequentially electrodepositing layers of metals, of a type and in proportion suitable for forming a superconducting ceramic, to form a precursor metal deposit, followed by... | 11/10/1992 |
| 5157015 | Process for preparing superconducting films by radio-frequency generated aerosol-plasma deposition in atmosphere A process for coating a superconductive film onto a substrate is provided. In the first step of this process, a solution of the reagents required to produce the superconductive material is subjected to ultrasonic sound waves to create an aerosol. Thereaft... | 10/20/1992 |
| 5152973 | Synthesis 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 |
| 5147848 | Precipitation process for forming Bi-Pb-Sr-Ca-Cu-O superconductors by dissolving nitrate salts in acid and adding a solution of triethylamine and oxalic acid A process for preparing powder of high temperature oxide superconductors of Bi-Pb-Sr-Ca-Cu-O type. In an aqueous solution of nitrate salts of Bi, Pb, Sr, Ca, and Cu metals, an appropriate ratio of triethylamine/oxalic acid was added to form a coprecipitat... | 09/15/1992 |
| 5135907 | Manufacture of high purity superconducting ceramic A method for the manufacture of superconducting polycrystalline ceramic materials by the decomposition of a mixture of isopropoxides.... | 08/04/1992 |
| 5122505 | Carbonate-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 |
