Patents
Patents for G01R 33 - Arrangements or instruments for measuring magnetic variables (52,887)
09/1989
09/26/1989US4870362 Nuclear magnetic resonance imaging method and apparatus
09/26/1989US4870361 Method and apparatus for carrying out a phase correction in MR angiography
09/26/1989US4870360 Apparatus for identifying an electrically conducting material
09/26/1989EP0216925A4 Determination of t1 relaxation times used in automated nuclear magnetic resonance image synthesis.
09/26/1989CA1261919A1 Identification process of the nature of a base that can be magnetised
09/26/1989CA1260091A1 Magnetic cores and methods of making the same
09/21/1989WO1989008852A1 Process for measuring the effects of eddy currents
09/21/1989WO1989008426A1 Rf coil for head
09/20/1989EP0333250A2 Method for determining the distribution of nuclear magnetization, and apparatus for carrying out the method
09/20/1989EP0332634A1 Apparatus and method for multiple angle oblique magnetic resonance imaging
09/20/1989EP0173738B1 Nmr gradient field modulation
09/19/1989US4868909 Signal shaping circuit utilizing a magneto-resistor in a voltage divider circuit
09/19/1989US4868748 Rapid processing of three-dimensional graphical objects from tomographic data
09/19/1989US4868707 Superconducting electromagnet apparatus
09/19/1989US4868506 Defect detection using intermodulation signals
09/19/1989US4868503 Magnetic resonance spectroscopy method
09/19/1989US4868502 Magnetic resonance imaging method and apparatus therefor
09/19/1989US4868501 Method and means for magnetic resonance spin-echo imaging using an adiabatic three pi pulse sequence
09/19/1989US4868500 Method for determining properties of liquid-containing porous media using nuclear magnetic resonance imaging
09/19/1989US4868495 Fiber optic
09/19/1989US4866983 Analytical methods and apparatus for measuring the oil content of sponge core
09/13/1989EP0332383A2 Gradient and polarizing field compensation
09/13/1989EP0332176A2 Magnet apparatus for use in magnetic resonance imaging system
09/12/1989US4866387 NMR detector network
09/12/1989US4866386 High signal-to-noise, rapid calibration of RF pulses
09/12/1989US4866385 Consistency measuring device
09/12/1989US4866384 Relative phase magnetic field direction indicating devices useful as compasses
09/12/1989US4866369 Waveguide structure for estimating the electromagnetic characteristics of a dielectric or magnetic material
09/12/1989US4866366 Negative feedback power supply apparatus
09/12/1989US4866260 Method and means for measuring the frequency of a periodic signal
09/12/1989US4864869 Flowmeter with faraday effect optical switch readout
09/06/1989EP0331261A1 Apparatus and method for determining azimuth, pitch and roll
09/06/1989EP0331135A2 Apparatus for the determination of magnetic domains
09/05/1989US4864241 Long time constant eddy current compensation
09/05/1989US4864240 Magnet systems
09/05/1989US4864238 Device for measuring weak magnetic fluxes utilizing planar technology
09/05/1989US4864237 Measuring device having a squid magnetometer with a modulator for measuring magnetic fields of extremely low frequency
09/05/1989US4863804 Superconductor wire and methods of constructing same
09/05/1989US4863716 Paramagnetic material for injection
09/05/1989US4863715 Method of NMK imaging using a contrast agent comprising particles of a ferromagnetic material
09/05/1989US4863039 Apparatus and method for handling a flexible disk for testing
08/1989
08/31/1989DE3905847A1 Magnetic resonance imaging method
08/30/1989EP0330045A2 Fluxgate magnetometer apparatus with wide temperature range accuracy and method for adjusting fluxgates in same for temperature compensation
08/30/1989EP0329781A1 Magnetic bridge devices
08/30/1989EP0329666A1 Spherical permanent magnet with equatorial access
08/30/1989EP0329652A1 Device for measurement of a magnetic field which is constant or varies over time.
08/30/1989CN1035180A Superconductive magneto-resistive device
08/29/1989US4862128 Field adjustable transverse flux sources
08/29/1989US4862087 Process and apparatus for homogenizing a static magnetic field
08/29/1989US4862086 System for generating magnetic fields utilized for magnetic resonance imaging apparatus
08/29/1989US4862085 Method of regulating the magnetic field delivered by a resistive magnet, a resistive magnet system using this method and an installation for forming images by nuclear magnetic resonance incorporating such a system
08/29/1989US4862084 Method and system for controlling characteristics of gradient magnetic fields in magnetic resonance imaging apparatus
08/29/1989US4862083 Magnetic resonance examination apparatus and method of operation thereof
08/29/1989US4862082 Method for encoding and displaying N parameters in multi-dimensional fourier NMR spectroscopy
08/29/1989US4862081 DC artifact removal in magnetic resonance imaging
08/29/1989US4862080 Method of deriving a spin resonance signal from a moving fluid, and device for performing this method
08/29/1989US4862078 Circuit for detecting defects of a magnetic recording head
08/29/1989US4861990 Tunneling susceptometry
08/29/1989CA1258882A1 Method and apparatus for rapid nmr imaging
08/24/1989WO1989007769A1 Systems and markers using magnetic or spin resonance phenomena
08/24/1989WO1989007416A1 Magnetic resonance imaging device
08/24/1989DE3903275A1 Supraleitender magnet Superconducting magnet
08/23/1989EP0329402A1 Systems and markers using magnetic or spin resonance phenomena
08/23/1989EP0329299A2 Magnetic resonance imaging methods and apparatus
08/23/1989EP0329240A2 Method for determining the spectral distribution of nuclear magnetization in a limited range of the volume, and apparatus for carrying out the method
08/23/1989EP0328537A1 Cylindrical permanent magnet for producing a uniform and transverse induction field.
08/22/1989US4860221 Magnetic resonance imaging system
08/22/1989US4859950 Balun circuit for radio frequency coils in magnetic resonance systems
08/22/1989US4859949 Magnetic resonance spectroscopy apparatus
08/22/1989US4859948 Device for positioning a sample carrier in an NMR spectrometer
08/22/1989US4859947 Magnetic resonance imaging apparatus comprising a stacked surface coil system
08/22/1989US4859946 Magnetic resonance imaging system
08/22/1989US4859945 Optimized signal to noise ratio
08/22/1989US4859944 Single-winding magnetometer with oscillator duty cycle measurement
08/22/1989US4859941 Proximity selectro with integral magnet, pole-piece plate and pair of magnetic transducers
08/22/1989US4859451 Paramagnetic contrast agents for MR imaging
08/16/1989EP0327619A1 Electric current sensor using the faraday effect
08/16/1989EP0327605A1 Cylindrical nmr bias magnet apparatus employing permanent magnets and methods therefor
08/16/1989EP0327554A1 Magnetic block with adjustable magnetization for producing a permanent magnetic field in a zone of interest.
08/15/1989US4857850 Passive-decoupling receiving antenna, in particular for a nuclear magnetic resonance imaging apparatus
08/15/1989US4857849 High frequency magnetic field generator for nuclear magnetic resonance
08/15/1989US4857848 Nuclear magnetic resonance imaging apparatus
08/15/1989US4857847 Method and system for magnetic resonance imaging
08/15/1989US4857846 Rapid MRI using multiple receivers producing multiply phase-encoded data derived from a single NMR response
08/15/1989US4857845 Method for the application of gradient pulses in an imaging experiment using a nuclear magnetic resonnance machine
08/15/1989US4857844 Method of and device for automatic phase correction of complex NMR spectra
08/15/1989US4857843 Self-referencing magnetic resonance spectroscopy system
08/15/1989US4857418 Nitrogen doped tantalum layer
08/15/1989US4856341 Apparatus for analysis of failure of material
08/15/1989CA1258425A1 Metal organo phosphorous compounds for nmr analysis
08/10/1989WO1989006979A1 Paramagnetic compounds
08/10/1989DE3509356A1 Method and arrangement for detecting electromagnetic waves
08/09/1989EP0327123A2 Superconducting quantum interference device
08/09/1989EP0326749A2 Magneto-resistive sensor element
08/09/1989EP0326741A2 Unbiased single magneto-resistive element ganged read head sensor
08/09/1989EP0326638A1 Non-superconducting apparatus for detecting magnetic and electromagnetic fields
08/09/1989EP0326589A1 Low noise cryogenic apparatus for making magnetic measurements
08/09/1989EP0326572A1 Cylindrical permanent magnet with longitudinal induced field.
08/09/1989EP0326557A1 Electron spin resonance spectrometer
08/09/1989EP0205469B1 Regulation of a magnet field