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| Number | Title | Issue Date |
| 6573220 | Superconductor with enhanced current density and method for making such a superconductor The present invention concerns an enhancement of the supercurrent carrying capabilities of bicrystalline or polycrystalline high-Tc superconductors, i.e. the critical current densities in such superconductors. The current transport properties a... | 06/03/2003 |
| 5504138 | Circuit board devices with superconducting bonds and lines Circuit board devices are provided based on use of high temperature superconducting ceramic polymers comprising high temperature superconducting ceramic powders distributed in electrically insulative organic polymers which are thermosetting by reaction of... | 04/02/1996 |
| 5244871 | N-type oxide superconductor represented by the formula (Ndx (Cey Lz)2 CuO4-d where L is La, Mg or a mixture of alakaline earth elements An oxide superconductor comprises a composition represented by the composition formula: (Ndx --Cey --Lz)2 CuO4-d (wherein L is an element selected from Ca and Mg, and x+y+z=1). The compositions of Nd,... | 09/14/1993 |
| 5219831 | Superconductive photoconductive-substance of the La-Cu-O system and a method for producing the same The disclosed substance has a general chemical formula of La2 -Cu1 -Oz, z being 3.84 to 4.00. The disclosed substance shows, at a temperature below 20° K., superconductivity, either potential or real, and the substance al... | 06/15/1993 |
| 5102483 | Method for production of elongated ceramic sheets A method for production of a ceramic sheet includes the following steps: First, a pair of green sheets are prepared from ceramic material by the doctor-blade method. Each of the green sheets has first and second surfaces. The prepared sheets are placed on... | 04/07/1992 |
| 5098885 | Superconductive substance Y0.294 Ba0.336 Cu01.77 The disclosed substance has a composition of Yx Bay CuOz, wherein x=0.2-0.5 y=0.2-0.5 and z.perspectiveto.1+y+(3/2)x, with a face-centered tetragonal crystalline structure of perovskite type. When being cooled at 85-135 K,... | 03/24/1992 |
| 5059560 | Bi-Ca-Sr-Cu-Zn-O superconducting glass-ceramics A glass-ceramic superconductor is disclosed, having a nominal stoichiometric composition consisting essentially of the oxides of Bi, Ca, Sr, Cu and Zn in the stoichiometric formula range: Bi2 Cax Srz Znn Cu... | 10/22/1991 |
| 5044406 | Pipe made from a superconducting ceramic material A pipe comprises a hollow support member made from a member selected from copper and copper compounds and a copper oxide superconducting ceramic material which covers the inner surface of the support member with a space kept in the pipe for use in a magne... | 09/03/1991 |
| 5006508 | Preparation of copper alkoxides and sol/gel precursors of superconducting ceramics The invention relates to the preparation of high purity, chloride- and alkali metal-free copper (II) alkoxides by means of the reaction of an alcoholic alkali metal alkoxide solution with copper (II) fluoride; ammoniating the resulting solution to render ... | 04/09/1991 |
| 4985401 | Method 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 |
| 4983572 | Superconductive body A superconductive body of an oxidic superconductive material having good mechanical properties is characterized in that the oxidic material forms a matrix through which finely divided particles are mixed at least the surface of which consists of a metal o... | 01/08/1991 |
| 4933317 | Bismuth oxide superconductors, and devices and systems comprising such a superconductor A new class of Bi-based superconductive oxides is disclosed. As do the previously known Bi-based superconductors, the novel materials have a perovskite-like crystal structure. However, in contradistinction to the prior art materials, the inventive materia... | 06/12/1990 |
| 4900715 | Method of preparing superconducting "orthorhomibic"-type compounds in bulk using C1 -C6 alkanoic acid salts Superconducting compositions of the general formula An Qm Cu3 Oy are prepared by wet mixing a combination organic acid salts, inorganic acid salts and oxides of A, Q and Cu, wherein at least one salt is an organ... | 02/13/1990 |
| 4898851 | Process 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 |
| 4880771 | Bismuth-lead-strontium-calcium-cuprate superconductors Novel superconductive Pb-substituted oxides are disclosed. The oxides all have layered perovskite-like crystal structure, and manifest superconductivity (R=o) above about 77K. The materials are described by the nominal formula X2+x M3-x | 11/14/1989 |
| 4866030 | Method of producing high temperature superconductors by a molten hydroxide process The present invention is directed to a method of producing metal oxides which are useful as high temperature superconductors. The method comprises the steps of: (a) mixing generally stoichiometric amounts of metal compounds with an alkali metal metal hydr... | 09/12/1989 |
| 4863521 | Spray drying monocarboxylate mixtures An aqueous solution of the monocarboxylates of Y, Ba, and Cu is spray dried, providing a contaminant-free non-hygroscopic product which is homogeneous at the atomic level. In a preferred embodiment Y, Ba, and Cu acetates are used in a molecular ratio of 1... | 09/05/1989 |
| 4861753 | Process for making superconductors using barium nitrate There is disclosed an improved process for preparing a superconducting composition having the formula MBa2 Cu3 Ox wherein M is selected from the group consisiting of Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu; x is from ... | 08/29/1989 |
| 4859652 | Method for preparation of high temperature superconductors using trichloroacetates Superior homogeneity in ceramic materials is achieved by forming an aqueous solution of trichloroacetates of certain metals, heating the solution to decompose the trichloroacetates to form carbonate precipitates, and recovering the carbonate precipitates.... | 08/22/1989 |
| 4857504 | Melt-produced high temperature rare earth barium copper oxide superconductor and processes for making same A class of melt-produced, high temperature suerpconductors and processes of making same are provided. The superconductor has a preferred composition of R-Ba-Cu-O wherein R is chosen from the group of rare earth metals excluding: Praseodyium; Cerium; and T... | 08/15/1989 |
| 4842366 | Ceramic superconductor and light transmitting composite wire A ceramic type superconductive layer (2) is formed on the outer peripheral surface of an optical fiber (1), and a stabilizing layer (3) is formed so that it contacts the outer peripheral surface of the superconductive layer (3). The diameter of the optica... | 06/27/1989 |
| 4839339 | Superconductor precursor mixtures made by precipitation method Method and apparatus for preparing highly pure homogeneous precursor powder mixtures for metal oxide superconductive ceramics. The mixes are prepared by instantaneous precipitation from stoichiometric solutions of metal salts such as nitrates at controlle... | 06/13/1989 |
| 4835136 | Lanthanum: sodium copper superconducting metal oxide compositions and process for manufacture Compositions containing a phase having the formula LA2-x Nax CuOz wherein x is about 0.1 to about 0.3 and z is about 3.8 to about 4.2 are superconducting. Processes for manufacturing such compositions and for using them are disclosed... | 05/30/1989 |
| 4762754 | Dynamic high pressure process for fabricating superconducting and permanent magnetic materials Shock wave formation of superconductive ceramic oxide electric and magnetic circuit elements with improved microstructures and mechanical properties.... | 08/09/1988 |
| 4657879 | Silicate superionic conductors and method of making same The spray-drying of a feed liquid mixture containing dissolved feed elements is used to produce precursor powders of Na+ -super conducting sodium gadolinium silicate (Na5 GdSi4 O12), (NGS), and sodium yttrium si... | 04/14/1987 |
| 4246035 | High purity mortar suitable for bonding refractory brick A high purity mortor suitable for bonding refractory brick is disclosed. The mortar, which is resistant to attack by molten aluminum, comprises 43 to 89 wt.% alumina aggregate, 10 to 45 wt.% calcium aluminate cement, 0.5 to 10 wt.% zinc borosilicate and 0... | 01/20/1981 |
