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| Number | Title | Issue Date |
| 6546614 | Method of preparing oxide superconducting wire The diameter of a first metal tube charged with raw material powder is reduced for obtaining an elementary wire. A plurality of such elementary wires are charged into a second metal tube, which in turn is reduced in diameter for obtaining a round first wi... | 04/15/2003 |
| 6335065 | Process for slip casting textured tubular structures A process for centrifugal slip casting a textured hollow tube. A slip made up of a carrier fluid and a suspended powder is introduced into a porous mold which is rotated at a speed sufficient to create a centrifugal force that forces the slip radially out... | 01/01/2002 |
| 6271473 | Oxide superconductive wire and process for manufacturing the same A clad superconductive wire or tape of an oxide superconductive material and a silver-copper alloy base containing 0.05-90 atomic % a copper or a silver alloy. The silver-copper alloy base contains one or more elements selected from the group of Zr, Hf, A... | 08/07/2001 |
| 6265354 | Method of preparing bismuth oxide superconductor The present invention provides a method to prepare a (Bi,Pb)SrCaCuO-2223 superconductor, in particular a (Bi,Pb)SrCaCuO-2223 superconducting wire with improved critical current density at reduced cost. In the method of preparing a (Bi,Pb)SrCaCuO-2223 supe... | 07/24/2001 |
| 6246007 | Oxide superconductive wire and process for manufacturing the same A clad superconductive wire or tape of an oxide superconductive material and a silver-copper alloy base containing 0.05-90 atomic % copper or a silver alloy. The silver-copper alloy base contains one or more elements selected from the group of Zr, Hf, Al,... | 06/12/2001 |
| 6221813 | Shaped bodies comprising textured superconducting material and a process for their production The invention relates to a process for producing a shaped body, in which a mixture of oxidic starting powders or a superconducting material, which comprises at least 30% by volume of platelet-shaped primary particles and has such a composition that a high... | 04/24/2001 |
| 6194352 | Multifilament composite BSCCO oxide superconductor A method for preparing an oxide superconductor cable includes transposing a plurality of oxide superconductor strands along a longitudinal axis so as to form a cable and exposing the cable to a two step heat treatment after cabling of the oxide strands, t... | 02/27/2001 |
| 6143697 | Method for producing superconducting thick film A method for producing a superconducting thick film involves the steps of forming a thick layer comprising a superconducting material on a substrate; firing the thick layer formed on the substrate; subjecting the fired thick layer to cold isostatic pressi... | 11/07/2000 |
| 6080703 | Method of making TIBiBaCaCuO based superconductors A method for producing a high temperature superconductor system having the composition TlBiBaCaCuO. The system exhibits a Tc of at least 116 K. The method includes the steps of mixing compounds including Tl, Bi, Ba, Ca, Cu, and O to create a mi... | 06/27/2000 |
| 6051534 | Process for making superconducting PBSCCO and PBSCCO parts A process for producing the 2223 phase of (Pb,Bi)SrCaCuO that is much faster than existing processes has the steps of: calcining a precursor powder mixture while maintaining intimate mixing of this precursor mixture by intermediate grindings during calcin... | 04/18/2000 |
| 6008163 | Process for slip casting textured tubular structures A process for centrifugal slip casting a textured hollow tube. A slip made up of a carrier fluid and a suspended powder is introduced into a porous mold which is rotated at a speed sufficient to create a centrifugal force that forces the slip radially out... | 12/28/1999 |
| 5952272 | HIP method of making high temperature mercury-containing superconductors Hg,Tl-based superconductors are produced by HIPping. A new superconducting phase, having a double (Hg,Tl)-layer and the nominal composition: (Hg1-x Tlx)2 (Ba1-a Sra)2 (Ca1-b Yb | 09/14/1999 |
| 5929001 | Engineered flux-pinning centers in BSCCO TBCCO and YBCO superconductors A method of preparing a high temperature superconductor. A method of preparing a superconductor includes providing a powdered high temperature superconductor and a nanophase material. These components are combined to form a solid compacted mass with the m... | 07/27/1999 |
| 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 |
| 5840659 | Method of preparing oxide superconductive material In order to provide a Tl--Ba--Ca--Cu--O superconductive material which can obtain a stable superconducting state and a method of preparing the same, the oxide superconductive material is expressed in the following composition formula: Tlx Ba | 11/24/1998 |
| 5807808 | Method of preparing Bi oxide superconducting wire In order to obtain a Bi--Sr--Ca--Cu--O or Bi--Pb--Sr--Ca--Cu--O oxide superconducting wire, raw material powder is pulverized to remove particles of non-superconducting phases having large particle sizes based on difference in particle size, and thereafte... | 09/15/1998 |
| 5801126 | Process for prorducing thallium-containing high-Tc superconductors in flowing gas atmospheres The process for producing high-Tc superconductors containing thallium, calcium, barium and copper, possibly also lead and/or strontium, provides for a thallium-free precursor to be produced in a first reaction step and this to be then mechanica... | 09/01/1998 |
| 5789348 | Preparation of superconductor precursor powders A process for the preparation of a precursor metallic powder composition for use in the subsequent formation of a superconductor. The process comprises the steps of providing an electrodeposition bath comprising an electrolyte medium and a cathode substra... | 08/04/1998 |
| 5747425 | High Tc superconductor magnetic shields and method of making same High Tc superconducting magnetic shields are provided, together with a method of fabricating such shields, wherein the shields exhibit very high critical applied magnetic field values of at least about 50 Gauss at 77 K. In fabrication procedure... | 05/05/1998 |
| 5744427 | Thallium oxide superconductor and method of preparing the same In a method of preparing a thallium oxide superconductor having components of Tl-Bi-Ca-Sr-Cu-O or Tl-Bi-Pb-Ca-Sr-Cu-O from raw material powder, the raw material powder is subjected to first heat treatment, then exposed to a compressive load, and thereafte... | 04/28/1998 |
| 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 |
| 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 |
| 5635456 | Processing for Bi/Sr/Ca/Cu/O-2223 superconductors A method for preparing an oxide superconductor article includes exposing the article after deformation of the article to a final heat treatment having the steps of (a) heating the article at a temperature sufficient to partially melt the article, such tha... | 06/03/1997 |
| 5627141 | Method of producing ceramics system superconducting wire In order to obtain a ceramics system superconducting wire, a bulk type ceramics system superconductor or its precursor previously treated to have orientativity in its crystal structure is reduced in diameter in a state charged in a metallic pipe, thereby ... | 05/06/1997 |
| 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 |
| 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 |
| 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 |
| 5545610 | Oxide-based superconductor, a process for preparing the same and a wire material of comprising the same An oxide-based superconductor ccmprising Tl, Pb, Sr, Ca and Cu or Tl, Pb, Ba, Sr, Ca and Cu, prepared by subjecting a low melting point composition comprising the superconductor-constituting elements and a solid composition comprising the superconductor-c... | 08/13/1996 |
| 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 |
| 5492885 | Mercury-thallium-barium-calcium-strontium-copper-oxide 1223 superconductor and method of making same Mercury-thallium based superconductors with the formula Hg1-x Tlx Ba2 (Ca1-y Sry)2 Cu3 O8+δ ; change "their preparing method, in particular characterized in that it" to an... | 02/20/1996 |
| 5413987 | Preparation of superconductor precursor powders A process for the preparation of a precursor metallic powder composition for use in the subsequent formation of a superconductor. The process comprises the steps of providing an electrodeposition bath comprising an electrolyte medium and a cathode substra... | 05/09/1995 |
| 5409891 | Method for producing a rotationally symmetrical molded part of a high-temperature superconductor A rotationally symmetrical molded part of a high-temperature superconductor achieves a critical current density of jc ࣙ800 A/cm2 at a temperature of 77K, by using a powder mixture (8) having the stoichiometric composition of Bi | 04/25/1995 |
| 5409888 | Process for producing a high-temperature superconductor and also shaped bodies composed thereof To produce a high-temperature superconductor of the composition Bi2 (Sr,Ca)3 Cu2 O8+x having a strontium to calcium ratio of 5:1 to 2:1 and a value of x between 0 and 2, the oxides and/or carbonates of bismuth, ... | 04/25/1995 |
| 5407908 | Method of manufacturing an oxide superconductor A method for manufacturing a Pb-based Cu oxide superconductor. The method includes the steps of mixing powders of a raw material containing at least Pb, Sr, Ce, M, where M is at least one element selected from the group consisting of Y, La, Nd, Sm, Eu, Gd... | 04/18/1995 |
| 5384088 | Oxide superconductive material of T1 (thallium) and Pb (lead) system and method for manufacturing the same Wire, bulk, film, etc. of a superconductive material is manufactured from a powdery precursor. The superconductive material has a superconductive crystal of 1223 phase and/or 1234 phase as a main component, and the powdery precursor comprises at least 121... | 01/24/1995 |
| 5376623 | Method to enhance critical temperature of thallium-based superconductors Unexpected results were obtained when Tl-1223 and Tl=-2223 superconductive materials were annealed at respectively pre-determined annealing temperatures. The optimum annealing temperatures for Tl-1223 and Tl-2223 superconductive materials are found to be ... | 12/27/1994 |
| 5334579 | Process for preparing superconducting material A process for producing a 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 rati... | 08/02/1994 |
| 5332721 | Method of fabricating thallium-containing ceramic superconductors An improved technique for the fabrication of thallium-based superconducting oxides, and particularly Tl:Ba:Ca:Cu:O 2223 oxides, is described which allows production of very pure superconductors (>95% 2223 phase) having excellent structural characteristics... | 07/26/1994 |
| 5328892 | Oxide superconductor composition and a process for the production thereof An oxide superconducting material having a composition represented by a formula TlSr2 (Srn-x Yx)Cun+1 O5+2n wherein n=1 or 2 and 0.1ࣘxࣘn is provided. This material has a high critical current density J... | 07/12/1994 |
| 5324712 | Formation of the high TC 2223 phase in BI-SR-CA-CU-O by seeding A process for producing a high critical temperature bismuth strontium calcium copper oxide superconducting material. An intimate mixture is formed of two superconducting materials. The first material is bismuth strontium calcium copper oxide or (bismuth, ... | 06/28/1994 |
