Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 8049485 | AC loss measurement device of high-temperature superconductor A measuring device for measuring the alternating current (AC) loss of a high-temperature superconductor is disclosed. In accordance with an embodiment of the present invention, the device includes a pulse power supply unit, which outputs pulse power in a cycle, a le... | 11/01/2011 |
| 7768251 | Superconducting coil testing A method of testing a superconducting coil path formed in a layer of superconducting material. The material is provided on a former (6) having a substantially curved surface. The method comprises the step of scanning the layer to detect defects in the layer. | 08/03/2010 |
| 7554317 | Critical current testing techniques for superconducting conductors A method for testing a superconducting coated conductor is disclosed. The method includes providing a superconducting coated conductor having an dimension ratio of not less than about 102; and measuring a voltage over a plurality of segments of the superc... | 06/30/2009 |
| 7342757 | System and method for quench protection of a superconductor A system and method for protecting a superconductor from a quench condition. A quench protection system is provided to protect the superconductor from damage due to a quench condition. The quench protection system comprises a voltage detector operable to detect volt... | 03/11/2008 |
| 7326974 | Sensor for measuring a gas concentration or ion concentration A field-effect transistor used as a sensor for measuring a gas or ion concentration utilizes a surface structure such as rings along with surface profiling, for example elevations of the rings and depressions therebetween, to decrease the surface conductivity betwee... | 02/05/2008 |
| 7301323 | Quench detection method and apparatus of superconductive conductor When supplying electric power to a superconducting cable including a superconducting shield covering a superconductive conductor, a phase A of a current generated by a magnetic field leaking from the superconducting shield and a phase B of a current passing through ... | 11/27/2007 |
| 7135869 | Thickness measuring systems and methods using a cavity resonator Film thickness measurement systems and methods are provided that utilize a signal generator having a Gunnplexer design and a resonant frequency detector to correlate the shift in resonant frequency experienced by a resonant cavity having one face abutting a test obj... | 11/14/2006 |
| 6975102 | Apparatus and method for analyzing capacitance of insulator According to the present invention, there is provided an insulator capacitance analyzer for analyzing C-V characteristics of a first MIS structure having unknown capacitance, which includes: a capacitance structure having known capacitance and configured so as to be... | 12/13/2005 |
| 6955749 | Sensor for measuring an ion concentration or gas concentration The invention relates to a sensor for measuring ion concentration or gas concentration, with a gas- or ion-sensitive layer (6) that has two sensitive partial areas (20 and 21), two conducting areas (1b and 2b), each c... | 10/18/2005 |
| 6929728 | Sensor for measuring a gas concentration or ion concentration The invention relates to a sensor for measuring a gas concentration or ion concentration which has a substrate (11), a drain (3) formed on the substrate, a source (2) formed on the substrate, a channel area (4) of the substrate located be... | 08/16/2005 |
| 6925873 | Liquid helium level sensor for use in a cryogenic environment and method for assembling same The present invention provides a method and apparatus for measuring the level of a liquid cryogen. The invention provides for use of a current source (52), a length, or multiple lengths, of superconducting filament (40) situated within a cryostat (1... | 08/09/2005 |
| 6624637 | Device for measuring the concentrations in a measuring liquid The invention relates to a device for measuring the concentration of ions, notably of hydrogen ions, in a measuring liquid using at least one ion-sensitive field effect transistor which is integrated into an electric circuit within the device in such a wa... | 09/23/2003 |
| 6605949 | Quasi-hemispherical fabry-perot resonator and method of operating the same In a quasi-hemispherical Fabry-Perot resonator for the non-destructive determination of the surface resistance Rs of electrically conductive thin material films, spherical and planar mirrors are disposed opposite each other in a double shielded... | 08/12/2003 |
| 6531859 | Electronic arrangement for an electric component and as a support for sensors The invention relates to an electrode arrangement for an electronic component, also acting as a support for sensors. Said electrode arrangement is mounted on a substrate (1) as a suitably dimensioned surface-structure of two electro-conductive electrodes ... | 03/11/2003 |
| 6320369 | Superconducting current measuring circuit having detection loop A superconducting current measuring circuit is provided with a detection loop through which a current flows by the influence of a magnetic field generated by a measurement target current. The detection loop contains a superconductor. The superconducting c... | 11/20/2001 |
| 6255831 | Millimeter wave measurement process With the help of the millimeter wave measurement system, the surface impedance is determined by means of one or a plurality of resonators with very high three dimensional resolution when there are relatively large resonator openings in the millimeter wave... | 07/03/2001 |
| 5936394 | Method and apparatus for measuring critical current value of superconducting wire Method and apparatus of measuring a critical current value of a superconducting wire formed by wire sections S(n), n being 1ࣘnࣘN and initially set to 1, comprising a first step (a) of determining electric currents I(m), m being 1ࣘmࣘM; a second ... | 08/10/1999 |
| 5889397 | Automatic HTS force measurement instrument A device for measuring the levitation force of a high temperature superconductor sample with respect to a reference magnet includes a receptacle for holding several high temperature superconductor samples each cooled to superconducting temperature. A rota... | 03/30/1999 |
| 5869958 | Method of and apparatus for determining a response characteristic A method of determining a response characteristic of a microwave device includes coupling a microwave resonator to the device, loading the resonator with microwave radiation, monitoring the time decay of power from the resonator, and comparing the monitor... | 02/09/1999 |
| 5744945 | Cryogenic fluid-level sensor A method of measuring a cryogenic fluid level utilizing a high temperature ceramic superconductor material driven above its level of critical current density. A high temperature ceramic superconductor is placed in cryogenic fluid and a voltage is applied ... | 04/28/1998 |
| 5619141 | Thermopower mapping of superconducting cuprates The invention comprises a method for determining the hole or electron concentration, transition temperature, ratio Tc /Tc (max), or state of doping of a material capable of exhibiting superconductivity when cooled below its critical ... | 04/08/1997 |
| 5563505 | Apparatus for characterizing high temperature superconducting thin film A dielectric resonator apparatus for measuring the parameters of high temperature superconducting thin film is disclosed having improved means for positioning the dielectric and substrates, holding the resonator components in place during use, suppressing... | 10/08/1996 |
| 5506497 | Process and device for microwave surface resistance determination A process for determining a surface resistance to microwave energy of a superconductive film provides a metallic cavity resonator whose resonator cavity is defined by metallic walls, and positioning a superconductive film whose microwave surface resistanc... | 04/09/1996 |
| 5400668 | Superconducting magnet magnetically levitated transportation apparatus A superconducting magnet includes a superconducting coil, an inner tank for containing the coil, a shield plate for covering the inner tank, and an outer tank for accommodating the superconducting coil, the inner tank and the shield plate. The inner tank ... | 03/28/1995 |
| 5339025 | Method for determining the granular nature of superconductors using pulsed current The present invention provides a method for determining the granular nature of superconductive materials and devices which includes the steps of: conducting a substantially rectangular current pulse through the superconductive material, maintaining the te... | 08/16/1994 |
| 5268646 | Apparatus for characterizing conductivity of superconducting materials Apparatus and method for noncontact, radio-frequency shielding current characterization of materials. Self- or mutual inductance changes in one or more inductive elements, respectively, occur when materials capable of supporting shielding currents are pla... | 12/07/1993 |
| 5239269 | Apparatus and method for measuring and imaging surface resistance Apparatus and method for determining and imaging superconductor surface resistance. The apparatus comprises modified Gaussian confocal resonator structure with the sample remote from the radiating mirror. Surface resistance is determined by analyzing and ... | 08/24/1993 |
| 5225395 | Supervisory system for superconductive transformer A supervisory system is used for a superconductive transformer which comprises primary to Nth-order windings (N is an integer of not less than 2) windings, and the windings are formed of superconductive lines and are wound around an outer surface of a sig... | 07/06/1993 |
| 5223798 | Method for measuring the resistive transition and critical current in superconductors using pulsed current The present invention provides a method for measuring the intragranular and ntergranular critical current of a granular superconductive material, comprising the steps of: 1) conducting a substantially rectangular electronic pulse through the material so as... | 06/29/1993 |
| 5179342 | Superconductor quench measuring device which evaluates reflected pulses In a method and apparatus for detecting and locating a quench zone in a superconducting coil, a sensor is positioned adjacent to and in heat transfer communication with the entire length of the superconducting coil. When a portion of the superconducting c... | 01/12/1993 |
| 5134360 | Apparatus and method for critical current measurements An apparatus for the measurement of the critical current of a superconductive sample, e.g., a clad superconductive sample, the apparatus including a conductive coil, a means for maintaining the coil in proximity to a superconductive sample, an electrical ... | 07/28/1992 |
| 5126655 | Apparatus for observing a superconductive phenomenon in a superconductor An apparatus for observing a superconductive phenomenon is disclosed. In the apparatus, a cooling unit cools a superconductor having a threshold temperature at which the superconductor changes from the normal conductive phase to the superconductive phase,... | 06/30/1992 |
| 5065087 | Apparatus for observing a superconductive phenomenon in a superconductor An apparatus for observing a superconductive phenomenon is disclosed. In the apparatus, a cooling unit cools a superconductor having a threshold temperature at which the superconductor changes from the normal conductive phase to the superconductive phase,... | 11/12/1991 |
| 5059891 | Microwave method for detection of weak links in superconductors Weak links in superconductors are detected by observing the effect of magnetic field modulation on the microwave resistance of superconductors. The phase detected response to the magnetic modulation can show a peak at Tc. The presence of peak(s... | 10/22/1991 |
| 5053707 | Apparatus for positioning a pick-up coil for detecting magnetic flux quantum trapped in a superconductor A head with a pick-up coil is attached to a supporter so that the head is freely movable along the direction perpendicular to the surface of a superconductor. Fluid spouted from the spout hole of the head maintains the height (gap space) of the head from ... | 10/01/1991 |
| 5030614 | Superconductor sensors A superconducting wire is produced by the surrounding of a superconductive material core with an intermediate compressible insulating layer and an outer malleable layer and then drawing said composite structure through a series of dies to reduce the diame... | 07/09/1991 |
| 4996472 | Passive superconducting quench detection sensor The present invention provides a passive superconducting sensor for quench detection in a superconducting coil. The sensor consists of a first circuit electrically connected to two voltage taps of a superconducting coil. The first circuit uses nonsupercon... | 02/26/1991 |
| 4959614 | Apparatus for determining microwave characteristics of superconductive materials using a resonant cavity and calibration waveguides Apparatus for determining the electrical characteristics of a superconductive material in a range of microwave frequencies and in a range of cryogenic temperatures has the material incorporated within a resonant cavity mounted on a cold finger for maintai... | 09/25/1990 |
| 4904929 | Method for detection of weak links in the current path of electrically continuous superconductors Weak links in electrically continuous superconductors are detected by observing the effect of magnetic field modulation on the dc resistance of superconductors. The phase detected response to the magnetic modulation shows a peak at Tc. The pres... | 02/27/1990 |
| 4892834 | Chemical sensor A sensor for detecting a chemical substance includes an insertion element having a structure which enables insertion of the chemical substance with a resulting change in the bulk electrical characteristics of the insertion element under conditions suffici... | 01/09/1990 |
