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 |
| 7432705 | Magnetic shields and instruments for measuring biomagnetic fields There is provided a magnetic shield which can shield external magnetic fields in the direction of an axis of a tubular magnetic shield and in the direction vertical to the axis. A magnetic shield has a cylindrical ferromagnetic substance 2-1 having ope... | 10/07/2008 |
| 7388371 | Method for controlling characteristics of double relaxation oscillation SQUID with reference junction The present invention relates to a method of controlling the characteristics of a double relaxation oscillation SQUID having a reference junction. In the method of controlling characteristics of a reference junction-type double relaxation oscillation SQUID (RJ-DROS)... | 06/17/2008 |
| 7365534 | Apparatus for measuring magnetic fields using a superconducting quantum interference device An instrument for measuring sub-pico Tesla magnetic fields using a superconducting quantum interference device (SQUID) inductively coupled to an unshielded gradiometer includes a filter for filtering magnetically-and electrically coupled radio frequency interference... | 04/29/2008 |
| 7355396 | Apparatus for controlling and adjusting the magnetic state of a magnetic probe and the applications thereof An apparatus for controlling and adjusting the magnetic state of a magnetic probe for detecting magnetic signals of a sample, it employs a negative feedback control unit to counter the change of magnetization of the magnetic probe. The local magnetic field of the sa... | 04/08/2008 |
| 7339373 | Magnetic shielding apparatus and biomagnetism measuring device The object of the invention is to provide a biomagnetism measuring device using a high-performance cylindrical shielding apparatus provided with a flange-type plate having an opening formed on a circumferential face, an auxiliary cylinder in which one or plural cyli... | 03/04/2008 |
| 7268542 | Scanning SQUID microscope having position noise compensation A scanning SQUID microscope is set forth to provide improved output imaging. The SQUID microscope includes a vertically adjustable housing adapted to securely retain a SQUID loop or sensor. A scanning stage of the SQUID microscope is adapted to support a sample whil... | 09/11/2007 |
| 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 |
| 7250758 | Inspection method and apparatus using scanning laser SQUID microscope A non-destructive method of narrowing down the location of a failure in a sample includes a first step of acquiring first and second images of magnetic-field distributions obtained by scanning a laser beam irradiating first and second samples, respectively, and if t... | 07/31/2007 |
| 7248044 | Magnetic flux measuring apparatus by hysteresis characteristic type digital FLL using counter system for squid In a SQUID magnetometer, high resolution, a high slew rate, and a high dynamic range are achieved without using expensive circuit components having a large number of processing bits and enabling a high speed processing operation. A digital FLL circuit using a double... | 07/24/2007 |
| 7221156 | Magnetic flow sensor comprising a magnetic field conductor and a hole diaphragm The invention relates to a magnetic flow sensor (1, 21, 51) comprising a) a loop-shaped magnetic field conductor comprising a point (2, 22, 32, 52) which expands to form a bar or a film (3, 23, 52), a loop-shaped part (3a, 23 | 05/22/2007 |
| 7106057 | High frequency scanning SQUID microscope and method of measuring high frequency magnetic fields A scanning SQUID microscope capable of high frequency magnetic field measurements uses a hysteretic SQUID detector and a pulsed sampling technique which permits to extend the bandwidth of the SQUID microscope to above GHz region. The system can be readily incorporat... | 09/12/2006 |
| 7095227 | Superconducting driver circuit To obtain a superconducting driver circuit which can obtain an output voltage of several millvolts or above, can use a DC power source as a driving power source, can form no capacitance between it and a ground plane, and has a small occupation area, the superconduct... | 08/22/2006 |
| 7091718 | System having unmodulated flux locked loop for measuring magnetic fields A system (10) for measuring magnetic fields, wherein the system (10) comprises an unmodulated or direct-feedback flux locked loop (12) connected by first and second unbalanced RF coaxial transmission lines (16a, 16b) ... | 08/15/2006 |
| 6768300 | Apparatus for measuring electromagnetic characteristics An apparatus for measuring electromagnetic characteristics includes a sample rod with a sample fixed to a lower part thereof, a helium 3 refrigerator, in which the sample rod is inserted, having a main pipe that forms around the sample rod a space that is coo... | 07/27/2004 |
| 6690162 | Device for high-resolution measurement of magnetic fields A device is proposed for high-resolution measurement, in particular for high-resolution absolute measurement of magnetic fields, having a network (1) of transitions (3) between superconductors (5, 6) which exhibit Josephson effects, called junctions below... | 02/10/2004 |
| 6603308 | Superconducting magnetic sensor having a cryostet with a flux guide According to this invention, a magnetic sensor (1) for measuring a magnetic field distribution of a measurement target S by using a SQUID (2) is characterized by including a storing portion (10) with an interior held in a vacuum state to store the SQUID (... | 08/05/2003 |
| 6597169 | Signal detector using superconducting quantum interference device and measuring method therefore A signal detector has a SQUID, a bias current supply circuit for supplying a bias current to the SQUID, and a drive circuit for detecting a magnetic flux by receiving a voltage signal of the SQUID and reading out the input signal as an output voltage. The... | 07/22/2003 |
| 6583619 | Squid microscope In order to measure magnetic characteristics of a sample, the latter is positioned above the SQUID so that both the SQUID and the sample are supported in a vessel in a gaseous nitrogen space above a liquid nitrogen coolant so that the measurement can take... | 06/24/2003 |
| 6552537 | Superconductive quantum interference element In a superconductive quantum interference element comprising Josephson joints, a washer coil and a detecting coil constituting a superconductive loop and a feedback modulation coil, to provide a superconductive quantum interference element capable of prom... | 04/22/2003 |
| 6512368 | Dewar and biological magnetism measurement apparatus using the dewar A dewar for SQUID is provided. In the dewar for SQUID, an amount of leak gas discharged from absorbent arranged in the upper portion higher than the liquid surface level of liquid helium is small even if the liquid surface level of the liquid helium is lo... | 01/28/2003 |
| 6498483 | Device and method for easily adjusting working point of SQUID A SQUID bias current adjustment device supplies a sinusoidal current at 40 kHz, for example, to a coil to generate magnetic field at a SQUID. The amplitude of the field corresponds to a half period of a field-voltage characteristic. Voltage generated from... | 12/24/2002 |
| 6494091 | Apparatus for measuring a gravitational attraction of the earth Apparatus for measuring gravitational attraction of the Earth comprising a loop formed from a superconductor material. The loop being divided into a first portion and a second portion having a predetermined length and configuration. The loop being positio... | 12/17/2002 |
| 6462540 | Magnetic field measuring apparatus which enables external magnetic noise cancellation A magnetic field measuring apparatus for precise cancellation of environmental noise includes a plurality of first SQUID gradiometers to detect noise and biomagnetic fields, a plurality of second SQUID gradiometers to detect noise, a driving circuit to dr... | 10/08/2002 |
| 6420868 | Read-out electronics for DC squid magnetic measurements Read-out electronics for DC SQUID sensor systems, the read-out electronics incorporating low Johnson noise radio-frequency flux-locked loop circuitry and digital signal processing algorithms in order to improve upon the prior art by a factor of at least t... | 07/16/2002 |
| 6388440 | Magnetic field bias adjusting device for SQUID modulation drive circuit achieving easy adjustment A modulation current at a predetermined frequency f is applied from an AC source to a flux locked loop for maintaining magnetic flux supplied to a SQUID at a constant value. An output voltage is picked out from the SQUID in this state to which a predeterm... | 05/14/2002 |
| 6362617 | Wideband, high dynamic range antenna A magnetic field sensor which can be used as an active antenna is disclosed that is capable of small size, ultrawideband operation, and high efficiency. The sensor includes a multiplicity of magnetic field transducers, e.g., superconducting quantum interf... | 03/26/2002 |
| 6356078 | Frequency multiplexed flux locked loop architecture providing an array of DC SQUIDS having both shared and unshared components Architecture for frequency multiplexing multiple flux locked loops in a system comprising an array of DC SQUID sensors. The architecture involves dividing the traditional flux locked loop into multiple unshared components and a single shared component whi... | 03/12/2002 |
| 6344742 | Magnetic field sensor having a flux guide to increase the effective capture area A magnetic field sensor has a SQUID, which is made of thin film of oxide superconductor deposited on a substrate, and a magnetic flux guide that has a higher permeability than vacuum to increase the effective capture area. The flux guide is positioned and... | 02/05/2002 |
| 6337567 | Apparatus and method for measuring second-order gradient of magnetic field using super conductor quantum interference device An apparatus and method for measuring a second-order gradient of a magnetic field using a super conductor quantum interference device (SQUID) which obtains the second-order gradient of the magnetic field with a simple-constructed and low-priced measuring ... | 01/08/2002 |
| 6300760 | Arrangement for coupling an rf-SQUID circuit to a super conducting tank circuit In an arrangement for coupling an rf-SQUID to a superconducting tank circuit and to a base plate, in which the tank circuit and the rf-SQUID form a coplanar structure and the tank circuit has a slit, the base plate (10) is configured as an outer loop (10a... | 10/09/2001 |
| 6285186 | Superconducting quantum interference device having bias wiring layer A bias wiring layer for supplying a bias current to a DC-SQUID is disposed above or below the superconductive ring of the DC-SQUID. The bias wiring layer is routed such that it passes through an axis of symmetry so that the center of the wiring layer pass... | 09/04/2001 |
| 6226538 | Magnetic sensor with squid and having superconducting coils formed on sapphire substrate This magnetic sensor comprises a flux transformer 2 having a superconducting thin film 2f formed on a sapphire substrate 2s, and a SQUID 1 disposed on the flux transformer 2 opposite thereto. In this magnetic sensor, since the sapphire substrate 2s, which... | 05/01/2001 |
| 6225800 | Arrangement for coupling an RF-squid magnetometer to a superconductive tank circuit An arrangement for coupling an rf-SQUID magnetometer to a superconductive tank circuit on a substrate is constructed in such a way that the two components are fully integrated into each other. Such integration increases the quality of the tank circuit by ... | 05/01/2001 |
| 6215303 | Wire detection system A SQUID (Superconducting Quantum Interference Device) magnetometer, by far the most sensitive means for detecting small magnetic field variations, is utilized to detect defects inadvertently produced in the manufacture and draw-down of wires. Detection is... | 04/10/2001 |
| 6169397 | Damped superconducting coil system having a multiturn, planar geometry superconducting coil and shunt resistors electrically connecting successive coil turns The operation of a planar geometry superconducting coil used in conjunction with a ground plane is improved by intracoil damping. This damping reduces coil resonances. The improvement consists of an intracoil shunt, which damps the resonances of the coil ... | 01/02/2001 |
| 6154026 | Asymmetric planar gradiometer for rejection of uniform ambient magnetic noise An asymmetric planar gradiometer for use in making biomagnetic measurements. The gradiometer is formed from a magnetometer which is inductively-coupled to the smaller of two connected loops patterned in a superconducting film which form a flux transformer... | 11/28/2000 |
| 6123902 | Device for highly sensitive magnetic detection of analytes An apparatus for the qualitative and/or quantitative measurement of analytes, in particular in biological samples by means of receptor ligand binding and having a magnetizing device for the production of a magnetic field at the location of the sample and ... | 09/26/2000 |
| 6066948 | Squid magnetometer having resistor-capacitor damping circuits A SQUID magnetometer for low noise, stable measurement of magnetic fields. The magnetometer has a SQUID formed of two Josephson junctions connected in parallel in a superconducting ring. An external damping impedance is connected across the Josephson junc... | 05/23/2000 |
| 6043649 | Magnetometric sensor using a voltage step up circuit and a SQUID element to measure a magnetic field The present invention provides an improved and simplified voltage step-up circuit (2) for a SQUID magnetometric sensor (1), which provides step-up of a voltage signal generated by a SQUID element (11). The SQUID element is exited by a modulated signal usi... | 03/28/2000 |
| 6025713 | Superconducting quantum interference device and non-destructive evaluation apparatus using the same A detecting coil of a SQUID is made of a superconductive film material having a critical temperature higher than a critical temperature of a superconductive film material composing a Josephson junction part. It is possible to measure the sample even when ... | 02/15/2000 |
