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| Number | Title | Issue Date |
| 7132388 | High-temperature oxide superconductor The present invention provides a high-temperature oxide superconductors, which comprises an oxide expressed as (Bi1-xAx)—B—C—Cu oxide (where, A is Sb and/or AS; B and C are elements different from each other, each being one or more elemen... | 11/07/2006 |
| 6855670 | Superconducting bismuth-strontium-calcium-copper oxide compositions and process for manufacture Compositions having the nominal formula BiaSrbCacCu3Ox wherein a is from about 1 to 3, b is from about ⅜ to 4, c ... | 02/15/2005 |
| 6809042 | Oxide superconductor thick film and method for manufacturing the same The present invention provides an oxide superconductor thick film which is formed on a substrate or a board and has a high Jc and Ic and a method for manufacturing the same. Predetermined amounts of materials containing elements of Bi, Pb, Sr, Ca and Cu are weighed,... | 10/26/2004 |
| 6677278 | Pb-Bi-Sr-Ca-Cu-oxide powder mix with enhanced reactivity and process for its manufacture An Oxide Precursor Powder from the Pb--Bi--Sr--Ca--Cu--O 2223 System can be produced by heat treating powder, produced using the Spray Pyrolysis Process as described in: GB2210605 or EP0681989 between 700° C. and 850° C. in an atmosphere containing betw... | 01/13/2004 |
| 6653259 | Fabrication of large bulk high temperature superconducting articles A method of fabricating large bulk high temperature superconducting articles which comprises the steps of selecting predetermined sizes of crystalline superconducting materials and mixing these specific sizes of particles into a homogeneous mixture which ... | 11/25/2003 |
| 6602622 | Superconducting parts, manufacturing method thereof and dielectric resonator A dielectric ceramic oxide substrate in combination with superconducting film containing Ba can be used to form a dielectric resonator which has a high no-load Q factor at a high frequency and satisfactory superconducting characteristics.... | 08/05/2003 |
| 6482775 | Oxide superconductor An oxide superconductor consisting of an oxide which comprises, as constituent metal elements, bismuth, lead, strontium, calcium and copper having a molar ratio of lead to bismuth of at least 0.2:1, and having an internal structure in which domains having... | 11/19/2002 |
| 6481091 | Method of preparing bismuth oxide superconducting wire The present invention provides a method to prepare a (Bi,Pb)SrCaCuO-2223 superconducting wire with improved critical current density at reduced cost. In general, the basic method according to the present invention comprises the steps of: (a) preparing a s... | 11/19/2002 |
| 6441394 | Intrinsic Josephson superconducting tunnel junction device Using an oxide superconductor that does not require cryogenic temperatures, a superconducting tunnel junction device is provided which can accurately control the magnitudes of critical current and step voltage necessary for electronics applications and wh... | 08/27/2002 |
| 6276048 | Method of producing oxide superconductor A method of producing a Bi--Pb--Sr--Ca--Cu oxide superconductor by thermally treating raw material comprises steps of performing first plastic deformation on the raw material, performing first heat treatment on the material being subjected to the first pl... | 08/21/2001 |
| 6216333 | Oxide superconductor current lead and method of manufacturing the same An oxide superconductor current lead provided with a rod-like or pipe-like oxide superconductor, at each of end parts of which a metallic electrode is formed. In this oxide superconductor current lead, the oxide superconductor is a Bi2 Sr2... | 04/17/2001 |
| 6043198 | High-Tc superconductor or 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 oxide-powder-in-tube method, which involves mixing the oxides of the elements Bi, Sr, Ca and Cu and completely melting them at tem... | 03/28/2000 |
| 5994275 | Processing of oxide superconductors An oxide superconductor article comprises silver and an oxide superconductor having the formula Bi2-y Pby Sr2 Ca2 O10+x, where 0ࣘxࣘ1.5, and 0.3ࣘyࣘ0.4, the oxide superconductor characterized by... | 11/30/1999 |
| 5958842 | Melt processing of Bi--2212 superconductors using alumina Superconducting articles and a method of forming them, where the superconducting phase of an article is Bi2 Sr2 CaCu2 Oy (Bi-2212). Alumina is combined with Bi-2212 powder or Bi-2212 precursor powder and, in ord... | 09/28/1999 |
| 5877125 | Method of preparing bismuth superconductor Disclosed herein is a method of preparing a bismuth superconductor including the steps of mixing raw materials for forming a bismuth superconductor with each other to obtain mixed powder, heat treating the mixed powder, pulverizing the mixed powder and th... | 03/02/1999 |
| 5874383 | Tibibacacuo based superconductors A high temperature superconductor system having the single phase composition TlBiBaCaCuO. The system exhibits a Tc of at least 116 K.... | 02/23/1999 |
| 5863867 | Fine-particle bi-sr-ca-cu-o having high phase purity made by chemical precipitation and low-pressure calcination method In accordance with the invention a process is provided for achieving a phase-pure BSCCO or lead doped BSCCO powder or precursor of the 2201, 2212 or 2223 phase. In this process a cation solution is intimately mixed with an anion solution and precipitation... | 01/26/1999 |
| 5851954 | Superconducting oxide-based composite material A composite based on a superconducting oxide having a high critical temperature, characterized by the fact that it is constituted by glass and said oxide, the glass being such that its vitreous transition temperature is not greater than 750K, the volume f... | 12/22/1998 |
| 5849672 | Oxide superconducting material, process for preparing the same and applications thereof Novel superconducting oxide material containing compound oxide having a composition represented by the formula: (Tl1-x Bix)1-p p !q Sry Caz Cuv Ow in wh... | 12/15/1998 |
| 5776862 | Oxide superconductor and process of producing the same The hole density of an oxide superconductor having holes as carriers is higher than the hole density to bring the highest value of the superconductivity critical temperature Tc thereof, and it can be made higher than the optimal density to bring the highe... | 07/07/1998 |
| 5716909 | Process for increasing the pinning force of superconducting Bi-Sr-Ca-Cu-O ceramic moldings Process for increasing the pinning force of superconducting Bi-Sr-Ca-Cu-O ceramic moldings, which comprises heating the pure-phase 2212 phase of a Bi-Sr-Ca-Cu-O ceramic molding under pure oxygen or an oxygen-containing gas for from 1 to 40 minutes to a te... | 02/10/1998 |
| 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 |
| 5674814 | Synthesis of increased-density bismuth-based superconductors with cold isostatic pressing and heat treating The present invention is directed to a process for producing high temperature superconducting ceramic materials. More particularly, the present invention is directed to a process that enhances the densification of Bi1.8 Pb0.4 Sr... | 10/07/1997 |
| 5665662 | High-temperature superconductor A high-temperature superconductor material based on the Bi--Sr--Ca--Cu--O system has the nominal composition: (Bi1-u Pbu)2 (Sr1-x-y Cax Biy)4 Cu3 O10+d (d=delta)... | 09/09/1997 |
| 5661114 | Process of annealing BSCCO-2223 superconductors A method for preparing a BSCCO-2223 oxide superconducting article includes annealing an oxide superconductor article comprised of BSCCO-2223 oxide superconductor at a temperature selected from the range of about 500° C.ࣘTࣘ787° C. and an annealing at... | 08/26/1997 |
| 5654259 | Superconductive conjugate photoconductive substances of the Bi-SrCa (laY)-Cu-O system, a method for producing the same and superconductive optoelectronic devices using the same The substance has a composition of a general chemical formula of Bi2 -(Sr2 Ca1)1-x (La2 Y1)x -Cuy -Oz, where 0.4ࣘxࣘ1, y=2 and z=9-10.5, wherein the substance is a... | 08/05/1997 |
| 5643857 | Method of melting ceramic superconductive material A ceramic superconductive material (1) including a compound containing oxygen and at least two types of metal elements and having layer structure is molten in a vessel (2), at least an inner surface (3) of which is formed of a solid solution alloy having ... | 07/01/1997 |
| 5627140 | Enhanced flux pinning in superconductors by embedding carbon nanotubes with BSCCO materials Enhanced flux pinning in superconductors is achieved by embedding carbon nanotubes into a superconducting matrix. The carbon nanotubes simulate the structure, size and shape of heavy ion induced columnar defects in a superconductor such as Bi2 ... | 05/06/1997 |
| 5618776 | Yttrium or rare-earth substituted metal oxide materials The invention provides certain novel metal oxide materials which exhibit superconductivity at elevated temperatures and/or which are useful in electrode, electrolyte, cell and sensor applications, or as electrochemical catalysts. The metal oxide materials... | 04/08/1997 |
| 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 |
| 5610123 | Method of preparing bismuth oxide superconductor In a method of preparing a bismuth oxide superconducting wire comprising the steps of filling raw material powder into a metal sheath, working the same into a wire by performing deformation processing in this state, and heat treating the wire, the raw mat... | 03/11/1997 |
| 5578555 | Method of monitoring the fabrication of Bi-2223 material having a high critical temperature A method of monitoring the fabrication of a superconductive material having a high critical temperature is wherein: the starting material is a mixture of powders of precursors for said material having stoichiometric proportions appropriate for the desired ... | 11/26/1996 |
| 5569641 | Synthesis of Bi1.8 Pb0.4 Sr2 Ca2 Cu3 Ox superconductor Two-powder processes for the synthesis of superconducting (Bi, Pb)-2223/Ag-clad wires by the oxide-powder-in-the-robe are provided. The first precursor powder, of nominal stoichiometry CaCuOx, is a solution-synthesized mixture of Ca0.45 | 10/29/1996 |
| 5565414 | Substituted superconductive Bi-Sr-Ca-Cu oxide and Bi-Sr-Ca-Ln-Cu oxide compositions A metal oxide is provided which is represented by the compositional formula : (Bi1-x AIx)2 (Sry Ca1-y-z AIIz)p (Cu1-r AIIIr)... | 10/15/1996 |
| 5541154 | Process 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 |
| 5529979 | Oxide superconducting material and process for preparing the same Superconducting oxide material containing compound represented by the formula: (Tl.sub.(l-p-q) Bip Pbq)y γz (.sub.(l-r) ଲr)s Cuv Ow in which each of ""... | 06/25/1996 |
| 5525581 | Ceramic superconductor having a heterogeneous composition distribution and method of preparing the same A Bi--Sr--Ca--Cu--O ceramic superconductor contains 0112 phases which are finely dispersed in a 2212-phase matrix with its c-axis oriented perpendicular to a growth direction. A method of preparing a Bi--Sr--Ca--Cu--O ceramic superconductor comprises the ... | 06/11/1996 |
| 5523284 | Process for preparing a bulk textured superconductive material In accordance this invention, there is provided a process for making a bulk superconductive material. In the first step of this process, a diffusion couple is formed from superconductor oxide and impurity oxide. Thereafter, the diffusion couple is heated ... | 06/04/1996 |
| 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 |
| 5521148 | Oxide superconducting material, process for preparing the same and applications thereof Novel superconducting oxide material containing compound oxide having a composition represented by the formula: [(Tl1-x Bix)1-p p ]q Sry Caz Cuv Ow in whi... | 05/28/1996 |
