Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7135438 | Method of making cuprate superconducting material A class of superconductive materials containing copper-oxygen bonding and with mixed cation-occupancy designed with a view to size and valence consideration yield useful values of critical temperature and other properties. Uses entail all applications which involves... | 11/14/2006 |
| 6784138 | Critical doping in high-Tc superconductors for maximal flux pinning and critical currents A method for maximising critical current density (Jc) of high temperature superconducting cuprate materials (HTSC) which comprises controlling the doping state or hole concentration of the materials to be higher than the doping state or hole concentration... | 08/31/2004 |
| 6694600 | Simplified deformation-sintering process for oxide superconducting articles A method is described to prepare a highly textured oxide superconductor article in a single deformation-sinter process. A precursor article including a plurality of filaments comprising a precursor oxide having a dominant amount of a tetragonal BSCCO 2212... | 02/24/2004 |
| 6673387 | Control of oxide layer reaction rates A process is described for formation of oxide films independent of thickness from precursor films comprising metals, metal oxides, and metal fluorides with properties and structures similar to those previously only obtained in thin films, for example less... | 01/06/2004 |
| 6632776 | Method of preparing oxide superconducting wire and pressure heat treatment apparatus employed for the method The method of preparing an oxide superconducting wire comprises steps of preparing a wire by coating raw material powder for a Bi--Pb--Sr--Ca--Cu--O based oxide superconductor including a 2223 phase with a metal and heat treating the wire in a pressurized... | 10/14/2003 |
| 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 |
| 6482656 | Method of electrochemical formation of high Tc superconducting damascene interconnect for integrated circuit A semiconductor device including a damascene superconducting interconnect, formed of a Ba--Cu--Ca--O superconducting material. A method of forming a superconducting damascene interconnect structure, and the structure made thereby, the method including for... | 11/19/2002 |
| 6436876 | Processing of oxide 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... | 08/20/2002 |
| 6436875 | Performance of oxide dispersion strengthened superconductor composites The invention features high performing composite superconducting oxide articles that can be produced from OPIT precursors substantially without poisoning the superconductor. In general, the superconducting oxide is substantially surrounded by a matrix mat... | 08/20/2002 |
| 6311386 | Processing of (Bi,Pb)SCCO superconductor in wires and tapes A novel process of the production and processing of high quality, high Tc (Bi,Pb)SCCO superconductors starts with fabrication of a precursor article including selected intermediate phases with desired chemical and structural properties. The pre... | 11/06/2001 |
| 6207619 | Oxidic superconductor with a bismuth phase of the 2223 type and method of manufacture thereof A superconductor with the Bi 2223 high Tc phase is manufactured by mulitply deforming and annealing a structure composed of a material matrix and at least one core of a fabricated material of the superconductor material. At least during an init... | 03/27/2001 |
| 6172009 | Controlled conversion of metal oxyfluorides into superconducting oxides An oxide superconductor article is provided having an oxide superconductor film having a thickness of greater than 0.5 microns disposed on a substrate, said article having a transport critical current density (Jc) of greater than or equal to ab... | 01/09/2001 |
| 6153561 | Method for oxygenating oxide superconductive materials The present invention includes a method of oxygenating an oxide superconductive material having an initial oxygen content, the method comprising the steps: (a) obtaining an oxide superconductive material, the material having an initial oxygen content; and... | 11/28/2000 |
| 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 |
| 6121207 | 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... | 09/19/2000 |
| 6122534 | High temperature superconducting composite conductor and method for manufacture of same A process for increasing the resistivity of a HTS oxide composite sheath including heating a superconductive HTS oxide composite, the composite including a sheath including silver, in the presence of mercury at temperatures sufficient to form a silver--me... | 09/19/2000 |
| 6121206 | Process for preparing YBCO superconducting films on a ceramic substrate A novel ceramic substrate useful for the preparation of superconducting films, said substrate having the formula REBa2 MO6 where RE represents rare earth metals--Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and M represents met... | 09/19/2000 |
| 6063735 | Superconductor mixture A mixture suitable for the production of melt-processed high-temperature superconductors capable of producing a high levitation force. The mixture contains YBa2 Cu3 O7-x powder with a very low content of copper oxide, i.e.... | 05/16/2000 |
| 6060433 | Method of making a microwave device having a polycrystalline ferrite substrate The invention provides a structure comprising a high temperature superconducting layer deposited on a ceramic polycrystalline ferrite plate suitable for making commercial microwave devices. In one embodiment, the high temperature superconductor is yttrium... | 05/09/2000 |
| 6010982 | Sodium-intervened superconductor and its manufacturing method The present invention relates to a sodium-intervened superconductor and its manufacturing method and more particularly, to the sodium-intervened superconductor expressed by the following Formula 1 and its manufacturing method, wherein the superconductor, ... | 01/04/2000 |
| 5972847 | Method for making high-critical-current-density YBa2 Cu3 O7 superconducting layers on metallic substrates A method is disclosed for fabricating YBa2 Cu3 O7 superconductor layers with the capability of carrying large superconducting currents on a metallic tape (substrate) supplied with a biaxially textured oxide buffer layer. T... | 10/26/1999 |
| 5962373 | Method for producing mixed metal oxide compounds A precursor is made from a plurality of materials having different vapor pressures. The precursor and a source material are placed in a closed heat treatment furnace. The source material is materials which are the same as some of the materials contained i... | 10/05/1999 |
| 5906965 | Thin film superconductor-insulator-superconductor multi-layer films and method for obtaining the same A high temperature superconductor (HTS) tri-layer structure and a method for providing the same are described. Preferable two dimensional growth for all layers is provided resulting in smooth surfaces and highly crystalline layers. Full oxygenation of HTS... | 05/25/1999 |
| 5885939 | Process for forming a-axis-on-c-axis double-layer oxide superconductor films A process for forming a laminate of 123-type copper oxide superconductor thin films having dissimilar crystal axis orientations, a laminate of 123-type thin copper oxide superconductor layers exhibiting excellent superconducting property, and wiring for J... | 03/23/1999 |
| 5863869 | Thin film high Tc oxide superconductors and method for making the same Superconducting transition metal oxide films are provided which exhibit very high onsets of superconductivity and superconductivity at temperatures in excess of 40° K. These films are produced by vapor deposition processes using pure metal sources for th... | 01/26/1999 |
| 5858926 | Process for preparing mercury-barium-calcium-copper-oxide-based superconductor materials The present invention is directed to a process for preparing a HgBaCaCuO superconductor by annealing a precursor mixture comprising a lower member of the homologous HgBaCaCuO superconductor series, a source of calcium and a source of copper. The precursor... | 01/12/1999 |
| 5851955 | Efficient growth of HTS films with volatile elements A system for applying a volatile element-HTS layer, such as Tl-HTS, to a substrate in a multiple zone furnace, said method includes heating at higher temperature, in one zone of the furnace, a substrate and adjacent first source of Tl-HTS material, to sub... | 12/22/1998 |
| 5840660 | Method of preparing bismuth oxide superconductor Raw material powder for a bismuth oxide superconductor is molded with addition of an organic vehicle, and the molded raw material is heat treated for removing the organic vehicle before the molded raw material is metal-coated. In this heat treatment, cond... | 11/24/1998 |
| 5807809 | Method of fabricating thin film superconducting materials Improved superconducting thin films are provided having very high Tc (zero) and Jc values, on the order of greater than or equal to 120K and 105 A/cm2 or greater, respectively. The films of the invention are ada... | 09/15/1998 |
| 5798318 | Reaction for high performance (Bi,Pb)2 Sr2 Ca2 Cu3 Oy composites The present invention provides a (Bi,Pb)SCCO-2223 oxide superconductor composite which exhibits improved critical current density and critical current density retention in the presence of magnetic fields. Retention of critical current density in 0.1 T fie... | 08/25/1998 |
| 5789347 | Method of producing high-temperature superconducting materials A method of producing ceramic superconducting materials such as YBa2 Cu3 Ox includes blending together starting materials for the superconducting material. The blend of starting materials are formed into a layer and sinter... | 08/04/1998 |
| 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 |
| 5731270 | Oxide superconductor and method and apparatus for fabricating the same An oxide is formed which will form an oxide superconductor containing a Cu-O atomic layer. The oxide is hydrogenated. The oxide is oxidized after it is hydrogenated. The hydrogenation and the oxidization are executed simultaneously with or after the oxide... | 03/24/1998 |
| 5719106 | Method of heat treating oxide superconducting wire A holder (1) provided with a spirally extending groove (2) is prepared and an oxide superconducting wire (3) is arranged in the groove (2) to be heat treated, so that each portion thereof is not bonded to another portion during the heat treatment.... | 02/17/1998 |
| 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 |
| 5716908 | Process for controlling crystalline orientation of oxide superconductive film A process for controlling crystalline orientation of an oxide superconductive film includes a first-heat-treatment step, and a second-heat-treatment step. In the first-heat-treatment step, an oxide superconductive film is heated and held in non-oxidizing ... | 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 |
| 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 |
| 5683969 | 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 50 μm along a... | 11/04/1997 |
| 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 |
