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| Number | Title | Issue Date |
| 7262597 | Hybrid squid microscope with magnetic flux-guide for high resolution magnetic and current imaging by direct magnetic field sensing A scanning microscope for high resolution current imaging by direct magnetic field sensing of a sample maintained in an ambient environment. The scanning microscope uses a magnetic sensor such as a SQUID and a fiber probe magnetically coupled between the SQUID senso... | 08/28/2007 |
| 7183766 | Superconducting magnetic field generation apparatus and sputter coating apparatus A superconducting magnetic field generating apparatus includes a superconducting body for generating a magnetic field below a critical temperature of the superconducting body, a thermal insulation vessel having a space for accommodating the superconducting body, and... | 02/27/2007 |
| 6895340 | Method of molecular structure recognition An analytical method and apparatus using principal component analysis of nuclear magnetic resonance (NMR) data for rapid molecular structure/function pattern recognition. The presence of a molecular substructure in an organic compound is determined by comparing prin... | 05/17/2005 |
| 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 |
| 5491410 | Superconducting magnetic sensor having a ferromagnetic element for converging an external magnetic field A superconductive magnetoresistor has a substrate, a ceramic superconductive film which is formed on one face of the substrate, ferromagnetic elements for focusing an external magnetic field, and an insulating film. One of the ferromagnetic elements is in... | 02/13/1996 |
| 5473249 | Superconductive device including a supercooled first body heated by electromagnetic radiation at a first frequency and a supercooled second body heated at a second frequency greater than the the first for measuring a magnetic field The device includes a first body (1) of superconducting material placed in the magnetic field to be measured, an arrangement (7) suitable for successively changing the temperature of this first body above and below its transition temperature, at a first f... | 12/05/1995 |
| 5436471 | Josephson junction apparatus formed on flexible polymeric film A Josephson junction apparatus comprises a polymeric film having flexibility, and a Josephson junction circuit formed on the polymeric film. The Josephson junction circuit includes a Josephson junction device and a wiring for connecting to the Josephson j... | 07/25/1995 |
| 5430814 | Temperature transient detection system for superconducting magnets A fiber optic system detects temperature transients in a superconducting magnet. A signal optical fiber is placed in function proximity with the superconducting magnet for responding to a temperature transient condition and a reference optical fiber is re... | 07/04/1995 |
| 5352978 | Apparatus for sensing a magnetic field with a superconductive material An apparatus of sensing a magnetic field using a ceramic superconductor magneto-resistive element having a superconductor magneto resistive effect of non linear characteristic against the applied magnetic field, there is provided a coil for applying a bia... | 10/04/1994 |
| 5287057 | Superconducting circuit having a rectifier for converting a bipolar signal to a unipolar signal A superconducting circuit system comprises a biasing circuit for producing a bias current that changes periodically, and a superconducting rectifier circuit driven by the bias current. The superconducting rectifier circuit is supplied with a first pulse t... | 02/15/1994 |
| 5194808 | Magnetic field detector using a superconductor magnetoresistive element with AC and DC biasing and a signal processor using Fourier transform The superconductor magneto-resistive element 14 is installed in a center portion surrounded by two coils 15 and 16 which generate A.C. and D.C. bias magnetic fields respectively. The coils 15 and 16 are respectively connected to A.C. and D.C. power source... | 03/16/1993 |
| 5187327 | Superconducting magnetic shield This invention provides a superconducting magnetic shield and a magnetic shielding apparatus including the same, thereby accurately measuring an extremely weak magnetic field such as magnetoencephalographic waves by reducing the influence of magnetic fiel... | 02/16/1993 |
| 5184072 | Apparatus for measuring weak static magnetic field using superconduction strips and a SQUID magnetometer A magnetic field measurement system including a pick-up coil is not moved but fixed. Strips of superconducting material are arranged in a plane with narrow slits between the strips. The strips are moved very near the pick-up coil along the plane. From out... | 02/02/1993 |
| 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 |
| 5126668 | Method of eliminating the effect of hysteresis in a superconductive magneto-resistive device An apparatus for magnetic measurement using superconductive magneto-resistive film which is disposed in a magnetic field with the surface of the superconductive magneto-resistive film directed in parallel with the direction of the magnetic field so that t... | 06/30/1992 |
| 5126667 | Superconductive magneto-resistive device for sensing an external magnetic field A superconductive 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 for... | 06/30/1992 |
| 5055785 | Superconductive magneto resistive apparatus for measuring weak magnetic field using superconductive magneto-resistive element A ceramic superconductive magneto-resistive element which has weak grain boundaries is highly sensitive to weak magnetic fields. The magnetic field is measured by the use of an electronic circuit. A comparator is used for comparing an output and reference... | 10/08/1991 |
| 5053834 | High symmetry dc SQUID system A thin film dc SQUID and its driving electronic circuitry configured with very high symmetry. The SQUID loop is formed with four holes at the respective ends of crossed slits. Each of these holes forms a single turn secondary for symmetrically arranged pa... | 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 |
| 5038104 | Magnetometer flux pick-up coil with non-uniform interturn spacing optimized for spatial resolution Pickup coils for imaging magnetometers are formed from plural turns of a conductor with varying spacing between turns selected so that the Fourier transform of the coil turns function which is the filter function of the coil, has no zeroes within the spat... | 08/06/1991 |
| 4996621 | Superconducting device for reading information from a magnetic recording medium Device is provided for reading information from a magnetic recording medium, comprising a SQUID (15), a magnetic yoke formed from two flux guides (3 and 5) and a face (13) for magnetic flux coupling of the SQUID with the magnetic recording medium. The SQU... | 02/26/1991 |
| 4983912 | Method for calibrating SQUID gradiometers of an arbitrary order In a method for calibrating multi-channel SQUID systems having gradiometers of an arbitrary order, calibration coils, each having the same number of ampere turns are symmetrically arranged at identical distances between the parallel coil planes with respe... | 01/08/1991 |
| 4866373 | Superconducting current detecting circuit employing DC flux parametron circuit A superconducting current detecting circuit which comprises a reference current generation circuit for generating a reference current and a DC flux parametron circuit for comparing an input current to be detected with the reference current to thereby prod... | 09/12/1989 |
| 4644273 | Five-axis optical fiber gradiometer A magnetic field gradiometer includes a geometric arrangement of fiber op sensors through which light from a single frequency laser is transmitted. Having a pair of single-mode optical fibers, each of which are coupled to a magnetostrictive element, each... | 02/17/1987 |
| 4634977 | High accuracy mapping of magnetic fields with a fiber optic interferometer A method of mapping at least a portion of a magnetic field with an interferometer is presented. The interferometer includes an optical fiber clad with a magnetostrictive material. The approximate direction of the magnetic field lines are determined and th... | 01/06/1987 |
| 4623842 | Magnetometer array with magnetic field sensors on elongate support A fluxgate magnetometer with a linear array of three sensors equi-spaced along a support beam and accurately adjustable into the same spatial orientation for sensing magnetic field anomalies and/or for measuring a single axis component of a magnetic field... | 11/18/1986 |
| 4517515 | Magnetometer with a solid-state magnetic-field sensing means A magnetic-field detection device useful as a sensitive magnetometer. The device employs a solid-state field-sensing element which experiences a change in permeability when it is exposed to a magnetic field. The change in permeability results in a change ... | 05/14/1985 |
| 4439732 | Electrically balanced fluxgate gradiometers A gradiometer for measuring magnetic field gradients. The gradiometer is formed by a number of magnetic field sensing devices. Each device has its own axis of sensitivity and produces a signal proportional to the magnetic field strength in the direction o... | 03/27/1984 |
| 4371838 | Optical fiber waveguide for measuring magnetic fields An optical fiber waveguide for detecting magnetic fields. The optical fiber waveguide includes therein an array of discrete elongate magnetized particles, all polarized in the same direction with their axes generally parallel with the longitudinal axis of... | 02/01/1983 |
| 4368430 | Fiber optic magnetic sensors A magnetometer which includes a pair of spaced apart optical fibers at least one of which comprises a cantilevered beam having a dipolar magnet thereon such that fluctuations of the magnetic H field will cause fluctuating mechanical torque on the magnet w... | 01/11/1983 |
| 4132949 | Method and apparatus for the continuous, contactless testing of an elongated conductor which consists at least partially of superconductive material To test a conductor with superconductive material which is in the superconducting state, the conductor is led through an external magnetic field which comprises at least two magnetic field regions spatially separated from each other and arranged one behin... | 01/02/1979 |
| 4063158 | Gaussmeter An optical gaussmeter for determining the magnitude and homogeneity of the magnetic field in the core of a superconducting magnet includes a crystal of calcium fluoride doped with divalent thulium disposed in the core of the magnet. The crystal is exposed... | 12/13/1977 |
| 4013591 | Composite superconducting materials Composite materials having properties of superconductivity which remain at much higher temperatures than conventional superconductors and intended for such applications as the construction of magnetometers or thermometers are provided in a divided form an... | 03/22/1977 |
| 3976938 | Superconducting magnetic sensor with improved balancing system A superconducting magnetic sensor having a sensing coil is provided with one or more superconducting discs for adjusting the effective area of the coil. The effective area of the coil is adjusted by varying the position of the superconducting disc relativ... | 08/24/1976 |
| 3976934 | Method and apparatus for the continuous, contactless testing of a long conductor which consists at least partially of superconductive material A method and apparatus for the continuous, contactless testing of a long conductor which consists at least partially of superconductive material in which the conductor is moved, with the superconductive material in the superconducting state, through an ex... | 08/24/1976 |
| 3962628 | Adjustable magnetic gradiometer A cryogenic magnetic field gradiometer is described wherein adjustments of areas presented by a superconducting wire loop, that is confined in a support structure within a cryogenic environment, are adjusted mechanically through wire positioning elements ... | 06/08/1976 |
