Class 338/32S - Superconductors

Subclass of Class 338 - Electrical resistors
No. of patents: 40
Last issue date: 03/20/2012

Number	Title	Issue Date
8138880	Persistent current switch An improved persistent current switch design and method of operation are disclosed. By way of example, a persistent current switch circuit comprises a heating element and a switch element located proximate to the heating element, the switch element being substantial...	03/20/2012
7180396	Superconducting current limiting device with magnetic field assisted quenching The present invention relates to a superconducting current limiting device comprising a superconductor component (1) wherein each superconductor component (1) comprises a superconductor body (2) on which a coil (3) is wound the coil being...	02/20/2007
7151225	Superconducting cable and superconducting cable line using the same Provided is a superconducting cable having a structure such that cable cores, each having a superconducting layer, are housed in a thermal insulation pipe and the superconducting layer of each cable core has portions having different critical current values. When an...	12/19/2006
7102861	Cryogenic current limiting fuse A cryogenic current limiting fuse is disclosed together with a method of manufacturing a cryogenic current limiting fuse, the cryogenic current limiting fuse comprising a first cryogenic composite and a second cryogenic composite wherein at least one of the first an...	09/05/2006
7075396	Superconducting coil system A superconducting coil system comprising a superconducting coil and a normal conducting coil, the normal conducting coil having a current time constant (L2/R2) which is larger than L1/R1, or the time constant at which the ...	07/11/2006
7042330	Low resistance value resistor The low resistance value resistor 11 has two electrodes 12,13 of metal strips having a high electrical conductivity. The metal strips are affixed on the resistor body by means of rolling and/or thermal diffusion bonding. A fused solder layer is formed ...	05/09/2006
7026910	GMR module So that the parts and connections of a component, particularly a Giant Magneto-Resistor, may withstand external forces, a meander group (13M, 14M) with at least one meander element (13.1, . . . , 13.n, 14.1, . . . , 14.n) is positioned in...	04/11/2006
6900718	Resistive superconducting current limiter The present invention relates to a resistive superconducting current limiter with a meandering shape. This current limiter avoids current density peaks at the turning points (12) or corners of the conductor track (10, 11) in that the central path of th...	05/31/2005
6762673	Current limiting composite material An elongated current limiting composite material comprising one or more high-temperature superconductor filaments and a second electrically conductive member, which may include a sheath of high bulk resistivity surrounding the filament. The current limiter exhibits ...	07/13/2004
6589449	High-melting-point conductive oxide, method of manufacturing the same, and high-temperature electrically conductive material based on the oxide A high-melting-point conductive oxide includes a mixture of a powdered Sr compound and Ru compound and/or Ru metal. The mixture is sintered at a primary temperature of 900° C. to 1300° C. in an atmosphere containing oxygen to form a sintered body that i...	07/08/2003
6524684	Resistive current-limiting device with at least one printed conductor covered by an insulating layer by using high Tc superconductive material A current-limiting device contains at least one conductor track including high Tc superconductor material, on a support body. The conductor track is provided with a cover layer including an insulating plastic material, which includes a filler w...	02/25/2003
6476706	Current limiter having a high-temperature superconductor On transition from the superconducting state to the normal conducting state, current limiters having a high-temperature superconductor increase their electrical resistance and thereby limit an electric current which is flowing through them. To provide ele...	11/05/2002
6420955	Resistive short-circuit current limiter having a conductor track structure made of high-temperature superconductor material, and method of producing the current limiter The resistive current limiter contains an electrically insulating support body and at least one conductor track structure arranged thereon and having a conductor track made of high-Tc superconductor material. The conductor track has straight an...	07/16/2002
6043731	Current limiting device A current limiting device having an electrical superconductor for attachment in an electrical circuit, the superconductor being made of material having a critical current density which varies with applied magnetic field. A magnetic field generator generat...	03/28/2000
5828291	Multiple compound conductor current-limiting device A current limiting device including at least one superconductor and at least one nonsuperconducting shunt resistor in parallel with each superconductor. Each superconductor has a first main superconductor face in contact with a main shunt resistor face of...	10/27/1998
5747425	High T_c 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
5387890	Superconductive coil assembly particularly for a current limiter, and a current limiter including such a coil assembly The present invention relates to a superconductive coil assembly which may be used particularly for a current limiter, the coil assembly comprising a plurality of coaxial cylindrical coils electrically connected in series, each coil comprising two winding...	02/07/1995
5314547	Rare earth slab doping of group III-V compounds A semiconductor film is provided characterized by having high carrier mobility and carrier density. The semiconductor film is doped with the rare-earth element erbium so as to improve its temperature stability. The semiconductor film is thereby particular...	05/24/1994
5254945	Magneto-resistive superconductive device and method for sensing magnetic fields A method for sensing an applied magnetic field uses a superconductor element with superconductive material as a sensor. The element is cooled to its superconducting state and current is supplied to the element. An applied magnetic field is applied to the ...	10/19/1993
5235309	Resistive current limiter The invention relates to a resistive current limiter having at least one conductor of a superconductive high-temperature material, carrying the rated current. The electrically active length of said conductor is at least three times greater than its linear...	08/10/1993
5227721	Superconductive magnetic sensor having self induced magnetic biasing A superconductinve magneto-resistive device for use in a sensor system for sensing an external magnetic field which is formed so as to have a predetermined pattern for a current path through which a supplied current flows. The pattern includes portions fo...	07/13/1993
5204650	Switch for controlling current flow in superconductors A superconductive switch is provided with a pair of superconductive routes which are wound around a cylindrical core in a bifilar fashion. One superconductive wire is constituted of a pair of superconductive routes. The superconductive routes are twisted ...	04/20/1993
5140267	Plural superconductive magnetoresistors for measuring distribution of magnetic field with individual biasing applied sequentially A magnetic field distribution measuring apparatus for measuring an external magnetic field distribution includes a substrate made of a nonmagnetic material and having opposite surfaces, a plurality of magnetoresistive elements deposited on one surface of ...	08/18/1992
5113164	Superconductors with switchable magnetic domains A tunable electromagnetic filter includes a type II superconducting medium which exhibits a permanent ferromagnetic component after exposure to a magnetic field. A magnetic field passes through the medium in a first direction, while an input conductor wou...	05/12/1992
4996508	Temporal and spatial control of field topologies in solenoids Devices and technique using specially configured switchable superconducting elements to achieve temporal and spatial modulation of magnetic fields created in the hollow of solenoids are provided....	02/26/1991
4996392	Superconductor magnetic image detection device A magnetic image detection device which measures a magnetic image in the first or second dimension by using a superconducting body. In the magnetic image detection device, multiple band-shaped superconducting bodies are provided in parallel on a nonmagnet...	02/26/1991
4943792	Superconducting switch pack A superconducting switch pack has six switch elements arranged with three in each of two planes. Each switch element is made of a length of cupro-nickel matrix multi-filamentary superconducting wire which is formed into a serpentine shape so as to be bifi...	07/24/1990
4942378	High-speed superconducting switch and method A high-speed superconducting switch and method. A body of superconductive material has a primary conductive plane through which primary current flows in an electrical circuit. Control current is conducted through the body of superconductive material in a ...	07/17/1990
4922367	Circuit for preventing latch-up of parasitic thyristor formed in CMOS integrated circuit A CMOS circuit including a variable conductor means interposed between a power supply and the CMOS circuit. The CMOS circuit comprises a P channel MOS FET and an N channel MOS FET laterally formed on the surface of a semiconductor substrate, inherently pr...	05/01/1990
4803456	Superconductive switch A superconducting switch is bifilarly wound with two superconductors. The superconductors are wound around a core inside a housing and are electrically insulated from one another. One of the superconductors is radially further out than the other and a com...	02/07/1989
4591509	Process for the preparation of superconducting compound materials A process for the preparation of a compound material composed of a substrate and a metallic layer of a metastable or unstable phase strongly adhering to the substrate surface. This phase contains more than one elemental component, and is deposited onto th...	05/27/1986
4586017	Persistent current switch for high energy superconductive solenoids Electrical switches used in conjunction with high energy superconductive windings must be able to quickly absorb large amounts of electrical energy since switching of the superconducting current is accomplished by means of transition to the resistive stat...	04/29/1986
4506996	Cryogenic thermometer A thermometer capable of providing temperature measurement over a wide temperature range comprises at least one temperature detection unit consisting of a first superconductor as a core, and a normal conductor and a second supercondutor sequentially super...	03/26/1985
4299861	Process for the production of a flexible superconductor A process for the production of a flexible superconductor comprising a carbon fiber having thereon a layer of niobium carbonitride, and an outer layer of a highly conductive metal. Initially, niobium is deposited on the fiber, and the niobium-coated fiber...	11/10/1981
4279944	Epoxy impregnated ventilated winding Cooling channels are provided within a resin impregnated superconducting winding by introducing inserts between wrappings of successive layers of superconducting winding and leaving them in place during impregnation of the winding with resinous bonding ma...	07/21/1981
4255465	Method of producing Josephson-effect junctions This invention relates to a method of producing a Josephson-effect superconductive junction. The method is characterised in that a superconductive refractory material is applied as a thin and uniform deposit to an insulating substrate, the deposit is defi...	03/10/1981
4164777	Superconducting switch incorporating a steering diode A persistence switch comprises a diode and superconductive wire in thermal contact with the diode. The heat evolved by current through the forward biased diode raises the temperature of the superconductor above the transition temperature. The diode charac...	08/14/1979
4101820	Fail-safe resistor Each pair of two pairs of terminals is connected by a conducting strip formed of a metallic material deposited on a fragile support block. The terminal connectors are shaped in an interwoven pattern, with an intervening space, such that the support block ...	07/18/1978
4083029	Thin film resistors and contacts for circuitry Contacts and resistors are provided for circuitry which are very resistant to interdiffusion and which have good stability. In particular, contacts to superconductive circuitry and resistors for superconductive circuitry are provided. In general, a contac...	04/04/1978
3956727	Laser activated superconducting switch A superconducting switch or bistable device comprising a superconductor in a cryogen maintaining a temperature just below the transition temperature, having a window of the proper optical frequency band for passing a laser beam which may impinge on the su...	05/11/1976

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Class 338/32S - Superconductors