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| Number | Title | Issue Date |
| 6740623 | Oxide superconductor and method for producing same An Hg- or Nd-based oxide superconductor comprises Ba as a constituent element and has a content of carbon as an impurity at a level of not greater than 2.0 atomic % whereby the oxide superconductor stably shows high superconducting characteristics without causing de... | 05/25/2004 |
| 6537949 | Oxide superconductor and method for producing same An Hg- or Nd-based oxide superconductor comprises Ba as a constituent element and has a content of carbon as an impurity at a level of not greater than 2.0 atomic % whereby the oxide superconductor stably shows high superconducting characteristics without... | 03/25/2003 |
| 6310297 | Strongly-linked oxide superconductor and a method of its manufacture A strongly-linked polycrystalline oxide superconductor article includes an oxide superconductor selected from the group consisting 124-type and 247-type oxide superconductors having fine, highly aligned oxide superconductor grains less than μm long a lon... | 10/30/2001 |
| 6281171 | MG-doped high-temperature superconductor having the superconducting anisotropy and method for producing the superconductor A Mg-doped high-temperature superconductor having low superconducting anisotropy includes a two-dimensional layered structure constituted by a charge reservoir layer and a superconducting layer, wherein some or all atoms constituting the charge reservoir ... | 08/28/2001 |
| 5919735 | High temperature superconductor A high temperature superconductor which has a layered crystal structure, which has a superconducting transition temperature, Tc, of 110 K or more, and which has a composition expressed by: Cu1-z M'z Ae2 Cax-1 Cu... | 07/06/1999 |
| 5920246 | Superconductive composite materials A composite material having a plurality of sections integrated into a unitary structure and each including a bulk of a superconductive metal oxide of RE--Ba--Cu--O wherein RE represents a rare earth element, the bulk of each of the sections having pinning... | 07/06/1999 |
| 5843870 | Alkaline-doped mercury cuprate superconductors Alkaline-doped superconductors of the formula X M2 Ca2 Cu3 O8+ are provided where X is selected from the group consisting of TI, Pb, Mo, Hg and mixtures thereof, M is selected from the group consisting of Ba, Sr ... | 12/01/1998 |
| 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 |
| 5716907 | Rock-salt/infinite layer chlorine-containing oxide superconductor and manufacturing method of the same The present invention is an oxide superconductor containing alkaline earth metal M (where M is at least one element of Ba, Sr, and Ca) and having a crystalline structure in which a portion based on two rock-salt structures including the alkaline earth met... | 02/10/1998 |
| 5705457 | Oxide superconductor and method for manufacturing the same The present invention provides an oxide superconductor which is expressed in the composition formula (Pb1-x-y Mx (A1)y)(A2)2 (A3)n-1 (Cu)n (O)2n+3+z (wherein 0ࣘ0.6, 0ࣘyࣘ0.6, x+y... | 01/06/1998 |
| 5670458 | Oxide superconductor and method for producing the same An oxide superconductor having a composition of the formula: An+1 Cun O2n+1+δ in which A is at least one alkaline earth metal element selected from the group consisting of calcium, strontium and barium, n is an integer o... | 09/23/1997 |
| 5670457 | Oxide superconductor and method of producing same An oxide superconductor composed of Cu, O and at least one of Ba, Sr and Ca and including alternately arranged at least one oxygen-deficient perovskite structure section and at least one infinite layer structure section, wherein the perovskite structure s... | 09/23/1997 |
| 5620945 | Process for forming a superconductive fiberform ceramic composite Processes are provided for forming a superconductive composite, comprising a superconductive metal oxide and a ceramic. The composite may be formed in any desired shape. Liquid nitrogen can be held around the superconductor longer and delivered in a more ... | 04/15/1997 |
| 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 |
| 5589441 | Superconductive fiberform ceramic composite Processes are provided for forming a superconductive composite, comprising a superconductive metal oxide and a ceramic. The composite may be formed in any desired shape. Liquid nitrogen can be held around the superconductor longer and delivered in a more ... | 12/31/1996 |
| 5578551 | Method for synthesis of high-temperature Hg-Ba-Ca-Cu-O (HBCCO) superconductors The present invention is a controlled vapor/solid reaction process for the synthesis of samples of bulk compositions with a structure defined by the homologous series HgBa2 Can-1 Cun O2n+2+δ [Hg-12(n-1)n] with ... | 11/26/1996 |
| 5559084 | Superconducting 2-4-7 oxides Disclosed are a composition and a method of preparing a composition of the formula R2 Q4 Cu7 Ox, wherein R is a rare-earth ion or a mixture of rare earth ions, and Q is Ba, or Ba combined with either Sr or Ca or... | 09/24/1996 |
| 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 |
| 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 |
| 5506196 | Magnetic material having superconductive properties and a method of preparation of the same A super conducting material is disclosed which exhibits super conducting properties at higher temperatures than known so far. The super conducting by the invented materials is exhibited at temperatures of over 110° K. Various combinations of the componen... | 04/09/1996 |
| 5445766 | 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 disclosed 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 said sub... | 08/29/1995 |
| 5446017 | Superconductive copper-containing oxide materials of the formula Ap Bq Cu2 O4&#b1;r A superconductive oxide material having an infinite layer structure and having the following formula: Ap Bq Cu2 O4&#b1;r wherein A and B are different and each represent an element selected from lanthanoid elements a... | 08/29/1995 |
| 5444039 | (Hg,Pb)-Ba-Ca-Cu-O superconductor and method of manufacturing the same The oxide superconductor according to the present invention is represented by (Hg1-x Pbx)Ba2 Ca2 Cu3 Oδ (0.08ࣘxࣘ0.41, 7.625ࣘδࣘ9.15), and has a crystal structure in which a laminat... | 08/22/1995 |
| 5430008 | Method and composition for improving flux pinning and critical current in superconductors Superconducting materials and methods of forming superconducting materials are disclosed. Highly oxidized superconductors are heated at a relatively high temperature so as to release oxygen, which migrates out of the material, and form a non-superconducti... | 07/04/1995 |
| 5389603 | Oxide superconductors, and devices and systems comprising such a superconductor A new class of high temperature superconductive oxides is disclosed. An exemplary member of the class has nominal composition Pb2 Sr2 Y0.5 Ca0.5 Cu3 O8 and has a transition temperature T | 02/14/1995 |
| 5372990 | Oxide superconductor Provided is an oxide superconductor in which superconducting layer is sandwiched between two blocking layers having different compositions. Available superconducting layers include a one-layer system having one Cu-O2 sheet, a two-layer system h... | 12/13/1994 |
| 5360786 | Superconductive material The disclosed superconductive material has a characteristic in accordance with which electrical resistance disappears at a temperature of at least more than the boiling point of 20.3° K. (-252.7° C.) of liquid hydrogen and relates to La-Ba-Cu-O series s... | 11/01/1994 |
| 5354733 | Copper oxide superconductor containing carbonate radicals An oxide superconductor contains carbonate radicals and compositions represented by the general formula (Ba1-x Srx)2 Cu1+y Cw O3+Z, wherein x, y, w and z satisfy the following relations: 0.... | 10/11/1994 |
| 5340797 | Superconducting 123YBaCu-oxide produced at low temperatures A method of preparing a superconductor. The method includes preparing a mixture of superconductor material constituents, disposing the constituents on a silver containing substrate, heating the mixture of constituents on a silver containing substrate, hea... | 08/23/1994 |
| 5318949 | Superconducting ceramic composition comprising (Pb,Cd)-Sr-(Y,Q)-Cu-O wherein Q is Ca or Sr A superconducting ceramic composition which is free of thallium, the composition having a unit cell containing two perovskite structure copper-oxygen planes and a rocksalt structure layer having a single plane containing cadmium.... | 06/07/1994 |
| 5278139 | Compound oxide high temperature superconducting material and a method for preparing same A superconducting material and a process for producing a superconducting material comprising a compound oxide represented by the general formula: (Ba, γ)x (,ଲ)1 -x &3xb5;y Cu1-y O3... | 01/11/1994 |
| 5262393 | Layered copper oxides (R.sub.(1+x) Ce.sub.(2-x))Sr2 Cu2 (M1-y Cuy)O11 wherein R is a rare earth element and M is one or both of Pb and Tl The present invention provides a layered copper oxide as an insulator for superconductor or as a superconductor, which has a chemical composition represented by the formula of (R,Ce)3 Sr2 Cu2 (M,Cu)O11, wherein ... | 11/16/1993 |
| 5250510 | Superconducting material A now superconducting material comprising a compound oxide represented by the general formula: (Ba, Ca)x (, Dy)1-x Tly Cu1-y O3-z wherein "" represents Y or La; the atomic ratio of Ca to Ba is bet... | 10/05/1993 |
| 5217949 | Superconductors Superconducting materials of the (T1,In)-Sr-Ca-Cu-O system-type are modified to raise their critical tempertures by substituting an element M for part of the Tl/In and optionally substituting Y or a rare earth element for some of the Ca. M is a transition... | 06/08/1993 |
| 5200387 | Superconducting materials of high density and crystalline structure produced from a mixture of YBa2 Cu3 O7-x and CuO A compact superconductor of the empirical composition YBa2 Cu3 O7-x ×zCuO, in which z is a number from 0.08 to 0.84, consists of elongated crystals grown together irregularly. It has a density of at least 5.9 g/cm3 | 04/06/1993 |
| 5198413 | Oxide-superconducting tunneling device formed on a submicron recess in the substrate An oxide-superconducting device comprises first and second electrodes of oxide-superconductor which are connected through a tunnel barrier layer. The oxide-superconductor is formed on a substrate having a recess, and it includes grain boundaries along the... | 03/30/1993 |
| 5194421 | Bi-Pb-Sr-Mg-Ba-Ca-Cu-O oxide superconductors and production thereof The present invention provides an oxide superconductor which is mainly composed of bismuth, lead, strontium, calcium, magnesium, and copper and has the composition represented by the formula: Bi1-A PbA Sr1-B MgB Ca | 03/16/1993 |
| 5151409 | Superconducting composition comprising Ln-Th-Cu-O, wherein Ln is Pr, Nd, Pm, Sm, Eu, Gd, Er or mixtures thereof A superconducting oxide composition comprising Ln-Th-Cu-O wherein Ln indicates at least one element selected from a group consisting of Pr, Nd, Pm, Sm, Eu, Gd and Er. A superconducting structure is formed in such a manner that at least an insulating layer... | 09/29/1992 |
| 5149684 | Production of a superconductor powder having a narrow melting transition width using a controlled oxygen atmosphere A process for preparing a superconductor-coated substrate including calcining a mixture of powdered yttrium or rare earth oxide (R), barium carbonate and copper oxide in a controlled atmosphere and in accordance with a predetermined temperature profile to... | 09/22/1992 |
| 5140000 | Metal oxide 247 superconducting materials The present invention comprises novel oxide materials exhibiting bulk superconductivity up to and exceeding 85K and processes for their synthesis. The oxides are within the formula Ra Bab Cuc Od wherein 1.9 | 08/18/1992 |
