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| Number | Title | Issue Date |
| 7309511 | Method of manufacturing oxide superconductor thick film The present invention provides an oxide superconductor thick film which is formed on a substrate or a board and has a high Jc and Ic and a method for manufacturing the same. Predetermined amounts of materials containing elements of Bi, Pb, Sr, Ca and Cu are weighed,... | 12/18/2007 |
| 5936401 | Device and process for measuring electrical properties at a plurality of locations on thin film superconductors A device and process for determining the uniformity of a superconducting film's critical current density and transition temperature over a large area uses an array of ac coils placed in close proximity to a superconducting film. A variable ac current is p... | 08/10/1999 |
| 5872368 | Method of controlling a super conductor The order parameter of a superconductor is reduced by injecting spin-polarized carriers into the superconductor. The reduction in the order parameter is used to modulate the critical current of the superconductor. In a typical embodiment, a current is cau... | 02/16/1999 |
| 5854492 | Superconducting quantum interference device fluxmeter and nondestructive inspection apparatus A nondestructive inspection apparatus having a SQUID is made with compact configuration and is capable of detecting a metallic or non-metallic metal for defects, corrosion, and the like, by forming the SQUID and a magnetic field applying coil on the same ... | 12/29/1998 |
| 5812042 | Superconducting magnet formed by laminating hollow conductor plates A laminated superconducting magnet includes a multilayer short-circuit superconductor group 2 formed by uniting superposed hollow superconducting plates, and an exciting coil 3 for inducing a current from an external power source 4 to the multilayer short... | 09/22/1998 |
| 5781009 | Two-coil apparatus for measuring the absolute value of magnetic penetration depth λ of superconductor films An improved two-coil apparatus for measuring the absolute value of magnetic penetration depth λ of superconductor films which is capable of measuring the absolute value of magnetic penetration depth which is denoted as λ of a large area high temperature... | 07/14/1998 |
| 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 |
| 5283524 | AC magnetic susceptometer with odd harmonic measurement for analyzing superconductive magnetic materials An improved AC susceptometer and methodology for its use which is particularly suitable for the characterization of the properties of superconducting materials. Added to the circuitry of a conventional AC susceptometer is frequency domain analytical equip... | 02/01/1994 |
| 5280240 | Methodology using odd harmonic components of an induced magnetic field for analyzing superconducting magnetic materials and their properties An improved AC susceptometer and methodology for its use which is particularly suitable for the characterization of the properties of superconducting materials. Added to the circuitry of a conventional AC susceptometer is frequency domain analytical equip... | 01/18/1994 |
| 5270291 | Method of reducing decay of magnetic shielding current in high Tc superconductors Magnetic shielding currents having a critical current density, Jc, at a superconducting temperature are stabilized by reducing the temperature of the superconducting body after a steady state or persistent current is established. The current density of th... | 12/14/1993 |
| 5218296 | Method and apparatus for determining at least one characteristic of a superconductive film Disclosed are apparatus and method for measuring a characteristic of a film comprised of a material that is a superconductor below a critical temperature. The apparatus includes a magnetic circuit for inducing an alternating magnetic flux at a localized r... | 06/08/1993 |
| 5140266 | Apparatus and method for the non-destructive evaluation of a bifilar superconducting winding An apparatus and method is disclosed for evaluating the superconducting quality of superconducting materials. The materials are wound on a bifilar spool and tested in a cryogenic atmosphere to determine when the material quenches. During the testing proce... | 08/18/1992 |
| 5132279 | Method for determining transport critical current densities and flux penetration depth in bulk superconductors A contact-less method for determining transport critical current density and flux penetration depth in bulk superconductor material. A compressor having a hollow interior and a plunger for selectively reducing the free space area for distribution of the m... | 07/21/1992 |
| 5113135 | Critical field and continuity testing method and device for superconducting materials using the change in internal area of a superconducting loop The area of a loop made of superconducting material is decreased to incre the magnetic field on the surface of a test piece adjacent the loop for determining the critical field, Hc, of the test piece. A loop with a gap having a temporary plug ... | 05/12/1992 |
| 5053705 | Read/write coaxial magnetic head for use with apparatus for measuring the surface of superconductors A read/write head particularly suitable for mapping the superconductive properties of a sample of superconducting material. The head is arranged so that the reading and writing gaps are coaxial. Although the gaps are coaxial, the reading gap and the writi... | 10/01/1991 |
| 5039944 | Magnetometer based on the magnetically modulated resistance of a superconductor The invention relates to an apparatus and method to detect a magnetic field by measuring the magnetically modulated resistance of a superconductor maintained at its phase transition temperature (Tc).... | 08/13/1991 |
| 5030912 | Apparatus and method for mapping inhomogeneities on the surface of bulk and thin film superconductors Apparatus and methodology for mapping the superconductive properties of a sample of superconducting material. The material is cooled so that it is a mixed state and an alternating magnetic field is induced in a portion of the sample to be tested. The harm... | 07/09/1991 |
| 5004726 | Apparatus and methodology for the non-contact testing of materials for superconductivity by detecting odd harmonics above a threshold Apparatus and methodology for the rapid and inexpensive characterization of superconducting materials. The method and apparatus induces an alternating magnetic field in the sample to be tested. If the material is a superconductor odd harmonics are generat... | 04/02/1991 |
| 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 |
| 4939458 | Method and apparatus for quantifying superconductivity The invention relates to a novel apparatus for detecting as well as quantifying superconductivity characterized by a rigid-stemmed pendulum used to support the superconductive sample for free-swinging movement about a low-friction fulcrum in a magnetic fi... | 07/03/1990 |
