| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 324316000 | Using an electron resonance spectrometer system | 42 |
| 20080211500 | Detection and Reduction of Dielectric Breakdown in Semiconductor Devices - Methods for detecting the breakdown potential of a semiconductor device having a thin dielectric layer are disclosed. The method includes measuring a spectroscopy of the thin dielectric layer and determining whether the spectroscopy exhibits the presence of a breakdown precursor (H | 09-04-2008 |
| 20090091325 | METHOD OF DETERMINING DAMAGE TO SKIN - The invention provides a method for determining the presence of high molecular weight molecules, aminoacid molecules or protein fragments, in human or other mammalian skin, comprising irradiating a sample of the said skin with light at one or more wavelengths present in solar radiation, in the presence of a spin-trapping agent for radicals of said molecules, and using comparative electron spin resonance (ESR) spectroscopy to determine or investigate the presence of radicals of the said molecules induced in the skin by the light. The method may be used to investigate a range of skin and other tissue damage and the efficacy of agents and methods intended to protect skin from damage. | 04-09-2009 |
| 20090115416 | Method of and apparatus for in-situ measurement of degradation of automotive fluids and the like by Micro-Electron Spin Resonance (ESR) spectrometry - A method of and miniaturized apparatus adapted for in-situ measurement of degradation of automotive fluids and the like by micro-electron spin resonance (ESR) spectrometry, wherein the use of a modulated constant magnetic field in an RF resonating variable frequency microwave cavity resonator through which a fluid sample is passed, enables direct detection of molecular changes in such fluid sample resulting from fluid degradation during use. | 05-07-2009 |
| 20100001728 | PROBE AND SYSTEM FOR ELECTRON SPIN RESONANCE IMAGING - ESR imaging probe, system, and method are described. The probe is an ex-situ probe, the system comprises the probe and configured for operating the probe, and the method comprises detecting ESR from outside a resonator of the probe. An exemplary embodiment of a probe according to the invention comprises a cooled dielectric resonator, and one sided gradient coils. An exemplary embodiment of the system comprises source current that is configured to supply to the gradient coils currents of up to 100 A in pulses shorter than 1 μsec. | 01-07-2010 |
| 20100026300 | METHOD FOR IDENTIFYING A SAMPLE IN A CONTAINER, E.G. WHEN CONDUCTING A TRAVELER SURVEY IN THE CHECK-IN AREA, BY DETERMINING THE RESONANCE FREQUENCY AND THE QUALITY OF A DIELECTRIC RESONATOR TO WHICH THE CONTAINER IS ARRANGED - A method and apparatus for identifying a sample in a container, provide for the container with the sample being disposed relative to a resonator, a high-frequency signal being coupled into the resonator for exciting a resonant mode of the resonator, the resonant electric field of the resonator penetrating part of the sample in the container, the resonance curve of at least one resonant mode being measured with and without the sample, and the sample being identified based on the determined change in the resonance frequency compared to a measurement without sample. | 02-04-2010 |
| 20100097063 | METHOD FOR CHANGING SPIN RELAXATION, METHOD FOR DETECTING SPIN CURRENT AND SPINTRONICS DEVICE USING SPIN RELAXATION - The invention relates to a method for changing spin relaxation, a method for detecting a spin current, and a spintronic device using spin relaxation, and spin relaxation is changed through injection of a spin current. | 04-22-2010 |
| 20100127706 | SUBSTRATE FOR ORGANIC ELECTROLUMINESCENT ELEMENT, AND ORGANIC ELECTROLUMINESCENT ELEMENT - The object of the present invention is to provide a substrate for an organic EL element capable of forming an organic EL layer efficiently in a highly precise pattern in a short period of time, and an organic EL element having the preferable electric characteristics. | 05-27-2010 |
| 20100253345 | UPCONVERTER - An upconverter has a two port parametric amplifier that has a first port to receive an input, signal to be amplified and upconverted and a second port to receive a local oscillator signal and to output the amplified, upconverted signal at upper and lower sideband frequencies. The upconverter further has an antenna coupled to the second port and a power splitter inserted between the second port of the parametric amplifier and the antenna. | 10-07-2010 |
| 20100253346 | UPCONVERTER - An upconverter has a two port parametric amplifier that has a first port to receive an input signal to be amplified and upconverted and a second port to receive a local oscillator signal and to output the amplified, upconverted signal at upper and lower sideband frequencies. The upconverter further has an antenna coupled to the second port to receive the local oscillator signal and transmit the amplified, upconverted signal at upper and lower sideband frequencies and a low noise amplifier at the first port of the parametric amplifier, which is powered by the local oscillator signal. | 10-07-2010 |
| 20110025328 | METHOD OF AND APPARATUS FOR ANALYSIS OF THE COMPOSITION OF A SAMPLE BY ELECTRON SPIN RESONANCE (ESR) SPECTROMETRY EMPLOYING CARRIER SUPPRESSION - Described is an electron spin resonance (ESR) spectrometer comprising a miniaturized radio-frequency (RF) microwave cavity resonator. The miniaturized RF microwave cavity resonator receives a carrier signal from a circulator, modulates the signal path signal, and reflects the carrier signal back to the circulator to amplify the carrier signal prior to demodulation. A mixer receives and demodulates the carrier signal and outputs an audio signal to generate an ESR spectrum for analyzing a chemical composition of a fluid sample. The ESR spectrum represents a magnetic susceptibility of the fluid sample to a magnetic resonance cause variation in a resonant frequency of the miniaturized RF microwave cavity resonator. In a desired aspect, the carrier signal is split into two paths prior to demodulation. The two paths are demodulated by different mixers to produce two separate outputs, an absorption spectrum and a dispersion spectrum. | 02-03-2011 |
| 20110057653 | NEW TECHNIQUE FOR PERFORMING DIELECTRIC PROPERTY MEASUREMENTS AT MICROWAVE FREQUENCIES - A method, system, apparatus, and computer readable medium has been provided with the ability to obtain a complex permittivity ∈ or a complex permeability μ of a sample in a cavity. One or more complex-valued resonance frequencies (f | 03-10-2011 |
| 20110109313 | FAST ELECTRON PARAMAGNETIC RESONANCE IMAGING (EPRI) IN THE CW EPR MODE USING RAPID-SCAN IN THE PRESENCE OF ROTATING GRADIENTS AND DIRECT DETECTION WITH TRANSMIT/RECEIVE & DATA PROCESSING IN A DIGITAL SIGNAL PROCESSING PLATFORM - An electron paramagnetic resonance imaging system that includes means for continuously irradiating a sample with RF irradiation; means for imposing on the sample a sinusoidally varying magnetic field along with rotating gradients for spatial encoding; means for directly detecting signal data from the sample, without using field modulation, while irradiating the sample with RF radiation continuously, the means for directly detecting having means for sweeping the sinusoidally varying magnetic field; and means for transmitting, receiving and processing the signal data, using means including a digital signal processor. | 05-12-2011 |
| 20110148414 | MAGNETIC RESONANCE IMAGING OF SINGLE DOMAIN NANOPARTICLES - A method and system are disclosed for gathering information about an object including single domain particles which have a diameter in the range of about 5 to 80 nm. In one aspect, a method includes generating a static magnetic field of less than about 0.1 Tesla on the object and generating an RF energy, pulsed or continuous wave, so as to generate electron paramagnetic resonance of the single domain particles. The method also includes detecting the electron paramagnetic resonance of the single domain particles in the form of an image of the object. The single domain particles may have a predetermined diameter and a predetermined saturation magnetization and the applied magnetic field may be such that the single domain particles reach a magnetization being at least about 10% of the saturation magnetization. The method may be used for detecting tags in an object and for activating tags. | 06-23-2011 |
| 20110210737 | EPR USING FRANK SEQUENCE - Various systems and methods for detecting electron spins using electron paramagnetic resonance are described. An excitation signal generator configured to generate an excitation signal of varying amplitude and phase as compared to a reference signal may be present. A crossed loop resonator configured to isolate a detection signal produced by the excitation signal exciting an object with a magnetic field may also be preset. Further, a detection device configured to detect electron spins of the object using the detection signal isolated by the crossed loop resonator may be present. | 09-01-2011 |
| 20110267058 | DIRECTED ENERGY IMAGING SYSTEM - An imaging system that uses a directed-energy device can include a directed-energy device configured to generate an excitation signal to impinge a region of interest of a target and excite elements therein and receive resonance signals emitted from the region of interest of the target after the excitation signal is terminated. The directed-energy device can include a charged particle generator configured to generate plural energized particles and a charge transformer configured to receive the plural energized particles that include charged particles from the charged particle generator and to output a wavefront including energized particles that include particles having substantially zero charge. The imaging system can also include plural gradient coils positioned about a bore of a magnet and configured to impress a polarizing magnetic field on a target and a communications interface. | 11-03-2011 |
| 20120025828 | METHOD AND DEVICE OF ESTIMATING A DOSE OF IONIZING RADIATION - A device of estimating a dose of ionizing radiation absorbed in an intra bone volume. The device comprises a static magnetic field source adapted to generate a substantially static magnetic field in a probing space having a volume of less than 2 cubic millimeter (mm | 02-02-2012 |
| 20120112746 | Coil System and Method for Post-Exposure Dosimetry Using Electron Paramagnetic Resonance Spectroscopy - An apparatus and method for triaging patients according to radiation exposure operates by measuring electron paramagnetic resonance spectra of fingernails, toenails, and/or teeth. A coil structure allows in vivo measurement of tooth enamel or fingernail keratin with reduced coupling to underlying tissue. | 05-10-2012 |
| 20120133364 | METHOD OF AND APPARATUS FOR IN-SITU MEASUREMENT OF DEGRADATION OF AUTOMOTIVE FLUIDS AND THE LIKE BY MICRO-ELECTRON SPIN RESONANCE (ESR) SPECTROMETRY - A method of and miniaturized apparatus adapted for in-situ measurement of degradation of automotive fluids and the like by micro-electron spin resonance (ESR) spectrometry, wherein the use of a modulated constant magnetic field in an RF resonating variable frequency microwave cavity resonator through which a fluid sample is passed, enables direct detection of molecular changes in such fluid sample resulting from fluid degradation during use. | 05-31-2012 |
| 20120262176 | METHOD TO DETERMINE ELECTRON RELAXATION TIMES, T1, IN EPR TOMOGRAPHY - A method for determination of the images of electron relaxation times, T | 10-18-2012 |
| 20120326722 | ULTRA-FAST MAGNETIC FIELD FOR ELECTRON PARAMAGNETIC RESONANCE IMAGING USED IN MONITORING DOSE FROM PROTON OR HADRON THERAPY - Instrumentation and methodologies are provided that enable the direct measurement of free radicals generated in patients as a result of radiation therapy through the use of proton beams and other forms of ionizing radiation. As a result, in accordance with at least one disclosed embodiment, the instrumentation and methodologies may be used in conjunction with radiation therapy to detect, monitor and/or control generation of free radicals in cancerous tissue during such radiation therapy. | 12-27-2012 |
| 20130015857 | MAGNETIC RESONANCE IMAGING OF SINGLE DOMAIN NANOPARTICLES - A method and system are disclosed for gathering information about an object including single domain particles which have a diameter in the range of about 5 to 80 nm. In one aspect, a method includes generating a static magnetic field of less than about 0.1 Tesla on the object and generating an RF energy, pulsed or continuous wave, so as to generate electron paramagnetic resonance of the single domain particles. The method also includes detecting the electron paramagnetic resonance of the single domain particles in the form of an image of the object. The single domain particles may have a predetermined diameter and a predetermined saturation magnetization and the applied magnetic field may be such that the single domain particles reach a magnetization being at least about 10% of the saturation magnetization. The method may be used for detecting tags in an object and for activating tags. | 01-17-2013 |
| 20130021032 | CRYOGEN-FREE COOLING SYSTEM FOR ELECTRON PARAMAGNETIC RESONANCE SYSTEM - In an electron paramagnetic resonance spectrometer, a closed cycle cryocooler is used to cool gaseous helium, which is then circulated around a sample to cool the sample by direct convection. Since the sample is not mechanically connected to the refrigerator, no vibrations are transmitted from the refrigerator to the sample and the sample can be quickly removed and replaced. The cooled helium can be passed through a Joule-Thomson expansion device before circulating the cooled helium around the sample to further cool the helium. In addition, a vacuum pump can be connected to the helium outlet after circulating the cooled helium around the sample to increase the pressure differential across the Joule-Thomson expansion device and further cool the helium. In order to raise the temperature of the cooled helium, a heater can be placed about the cooled helium line upstream from the sample. | 01-24-2013 |
| 20130093424 | SYSTEM AND METHOD FOR ELECTRON SPIN RESONANCE - A resonator system for electron spin resonance (ESR) is disclosed. The resonator system comprises: a generally planar resonator layer defining an open-loop gapped by a non-conductive gap in the layer, and a microwave feed, positioned configured for transmitting microwave to the resonator layer such as to concentrate, with a quality factor of at least 100, a magnetic field within an effective volume of less than 1 nL above the layer. | 04-18-2013 |
| 20130119986 | IMAGE ACQUIRING METHOD AND IMAGE ACQUIRING APPARATUS - The invention relates to a method for acquiring, by use of a continuous-wave electron spin resonance imaging scheme that sweeps a magnetic field, a | 05-16-2013 |
| 20130127466 | SYSTEMS AND METHODS FOR ASSESSMENT OF OXYGENATION - A scanner for assessing localized oxygenation of a desired region of interest includes a handheld housing having a proximal end and a distal end. A resonator coil is disposed within the housing and also disposed adjacent the distal end of the housing. The resonator coil is configured to both excite and read paramagnetic materials. A magnet is disposed within the housing and also disposed adjacent the distal end of the housing. The magnet is configured to provide a substantially uniform magnetic field over the desired region of interest. The scanner is configured to use electron paramagnetic resonance to assess localized oxygenation in the desired region. | 05-23-2013 |
| 20130257431 | EPR Methods and Systems - Various systems and methods for detecting electron spins using electron paramagnetic resonance are described. An excitation signal generator configured to generate an excitation signal of varying amplitude and phase as compared to a reference signal may be present. A crossed-loop resonator configured to isolate a detection signal produced by the excitation signal exciting an object with a magnetic field may also be present. Further, a detection device configured to detect electron spins of the object using the detection signal isolated by the crossed-loop resonator may be present. | 10-03-2013 |
| 20130271140 | Ordering Projections For Magnetic Resonance - Example apparatus and methods order projections in a 3D MRI acquisition to achieve improved equidistant spacing or to achieve improved adherence to a target distribution. The equidistant or target spacing may exist in k-space and/or in kt-space. In one embodiment, the improved equidistant spacing is a substantially uniform spacing. The substantially uniform spacing may be achieved using a modification of a charge repulsion analysis that treats points of projections that intersect the surface of a 3D volume to be imaged as point charges distributed on the 3D volume. In another embodiment, the target spacing may be uniform, non-uniform, uniform in parts and non-uniform in other parts, and other combinations. | 10-17-2013 |
| 20130285661 | Spin detector arrangement for measuring the vector component of a spin vector predominating in a particle beam - The invention relates to a spin detector arrangement for detecting vector components of a predominating spin vector in a particle beam (T) having a predominating spin orientation of the particles. The spin detector arrangement comprises a spin rotator ( | 10-31-2013 |
| 20140021952 | DUAL-MODE MICROWAVE RESONATOR DEVICE AND METHOD OF ELECTRON SPIN RESONANCE MEASUREMENT - A microwave resonator device ( | 01-23-2014 |
| 20140097841 | SPINWAVE BASED NONDESTRUCTIVE MATERIAL, STRUCTURE, COMPONENT, OR DEVICE TESTING TOOLS - Systems and methods for spinwave-based metrology in accordance with embodiments of the disclosure involve generating and detecting spinwaves in a sample having a ferromagnetic material; and determining a material thickness, a material integrity measure, a presence of a manufacturing defect, a categorical type of manufacturing defect, and/or a manufacturing process statistic corresponding to spinwave behavior in the sample. In an embodiment, spinwaves are generated by way of concurrent exposure of a target measurement site of the sample to each of a bias magnetic field and radiation (e.g., microwave or radio frequency radiation) produced by a first set of integrated waveguides. A response signal corresponding to a behavior of spinwaves within the target measurement site can be generated by way of a second set of integrated waveguides. Various embodiments of systems and methods for generating spinwaves, detecting spinwaves, and calculating, analyzing, or monitoring one or more sample properties can be automated. | 04-10-2014 |
| 20140097842 | ELECTRON SPIN RESONANCE FOR MEDICAL IMAGING - A method includes generating, from an integrated oscillator circuit, an oscillating output signal and generating, by an integrated power amplifier (PA) circuit, an amplified oscillating output signal based on the oscillating output signal. The method further includes receiving, by integrated receiver amplifier circuit, an electron spin resonance (ESR) signal from biological samples that include a magnetic species and generating, by the integrated receiver amplifier circuit, an amplified ESR signal based on the received ESR signal. The method further includes receiving, by the integrated receiver amplifier circuit, an electron spin resonance (ESR) signal from magnetic nanoparticles that are loaded with drugs or attached to human cells. | 04-10-2014 |
| 20140210473 | ELECTRON SPIN RESONANCE SPECTROMETER AND METHOD FOR USING SAME - An electron spin resonance spectrometer includes a bridge to transmit an excitation frequency and to receive a signal frequency; a probe electrically connected to the bridge and comprising: a first conductor in electrical communication with the bridge to transmit the signal frequency to the bridge; a shorting member electrically connected to the first conductor to transmit the excitation frequency to a sample, to produce the signal frequency, and to transmit the signal frequency to the first conductor; and a second conductor electrically connected to the shorting member; and a magnet disposed proximate to the probe. | 07-31-2014 |
| 20140218032 | Resonator Device for Electron Spin Resonance - In some aspects, a resonator device for spin resonance applications is described. In some examples, the resonator device includes a substrate, terminals, and resonators. The terminals include a first terminal having first terminal segments disposed on a substrate surface, and a second terminal having second terminal segments disposed on the substrate surface opposite the first terminal segments. The resonators include conductors disposed on the substrate surface between the first and second terminals. Each conductor is disposed between one of the first terminal segments and a respective, opposite one of the second terminal segments. | 08-07-2014 |
| 20140285198 | HIGH-ISOLATION TRANSMIT/RECEIVE SURFACE COILS AND METHOD FOR EPRI - The present invention provides an apparatus and a corresponding method useful for electron paramagnetic resonance imaging, in situ and in vivo, using high-isolation transmit/receive (TX/RX) coils, which, in some embodiments, provide microenvironmental images that are representative of particular internal structures in the human body and spatially resolved images of tissue/cell protein signals responding to conditions (such as hypoxia) that show the temporal sequence of certain biological processes, and, in some embodiments, that distinguish malignant tissue from healthy tissue. In some embodiments, the TX/RX coils are in a surface, volume or surface-volume configuration. In some embodiments, the transmit coils are oriented to generate an RF magnetic field in directions substantially orthogonal to a static gradient field, and the receive coils are oriented to sense RF EPR signal in directions substantially orthogonal to the transmitted field and to the static field, to minimize coupling of the transmitted signal to the receive coils. | 09-25-2014 |
| 20140292336 | APPARATUS AND METHOD FOR MEASURING FREE RADICALS - A double solenoid coil operates in accordance with input first and second signals to generate an electromagnetic field and to provide the generated electromagnetic field as a sample. Then, a signal corresponding to the generated electromagnetic field is received, amplified, and output by a double lock-in amplifier. Free radicals generated by the sample in accordance with the electromagnetic field are measured based on the signal output from the double lock-in amplifier. | 10-02-2014 |
| 20140306709 | ORGANIC MAGNETIC FIELD SENSOR - An organic, spin-dependent magnetic field sensor ( | 10-16-2014 |
| 20140340085 | TIME-RESOLVED MAGNETIC SENSING WITH ELECTRONIC SPINS IN DIAMOND - A system for performing Walsh reconstruction of time dependent fields with a quantum probe that includes a diamond structure that includes nitrogen-vacancy (NV) centers for sensing magnetic and electric fields. An arbitrary waveform generator and microwave waveguides manipulate the quantum spins in the diamond structure using a plurality of coherent control sequences to measure the arbitrary profile of time-varying magnetic fields. A laser that optically addresses the quantum spins in the diamond structure for initialization and readout. | 11-20-2014 |
| 20160097832 | Electron Spin Resonance Apparatus - A pulse pattern forming a pulse sequence is repeatedly generated according to a repetition frequency Fp, and an original pulse train is generated. A modulation signal which repeats ON and OFF states at a modulation frequency Fm is generated. Fp and Fm are in a relationship Fp=2n×Fm, wherein n is an integer greater than or equal to 1. The original pulse train is modulated according to the modulation frequency Fm, and a pulse train signal is generated. A microwave signal is modulated by the pulse train signal and is supplied to an electron spin resonance chamber. By executing a lock-in demodulation on a detection signal reflecting electron spin resonance using the modulation frequency Fm, an ESR signal is obtained. | 04-07-2016 |
| 20160146919 | RADIATION DOSIMETER AND DOSE MEASUREMENT METHOD BY EPR SPECTROSCOPY - The invention relates to a dosimeter comprising a quantity of dosimetric material, the dosimeter being suitable for being irradiated and undergoing a dose measurement by EPR spectroscopy, the enclosure being made from a material not having a response in EPR spectroscopy or having a response different from the response of the dosimetric material after identical irradiation such that the signal of the material of the enclosure decreases as a function of time after irradiation of said material such that a period of time exists after irradiation at the end of which the material has no measurable signal, or a residual signal whose intensity is less than 5% of that measured after irradiation, and the dosimetric material has a constant EPR signal alter irradiation. The invention also relates to a method for measuring the dose absorbed by the dosimetric material contained in such a dosimeter. | 05-26-2016 |
| 20160161586 | System And Method For Radiation Biodosimetry On Nail Clippings Using Electron Paramagnetic Resonance Spectroscopy - A system and method are disclosed for post-exposure radiation biodosimetry on subjects using electron paramagnetic resonance (EPR) spectroscopy of nail clippings from the subjects. Basis spectra averaged from a plurality of nail clipping measurements are used to spectrally decompose an EPR-measured signal and identify a radiation-induced signal (RIS). The RIS is used to determine an exposure dose from a standard curve. A collection apparatus provides for harvesting and storing nail clippings in a dry, oxygen-reduced, environment to prevent sample degradation. The collection apparatus includes a container with an atmosphere isolated from external atmosphere and a sample bag impermeable to oxygen and water vapor. The sample bag includes an oxygen absorber and a desiccant for storing nail clippings with minimal exposure to oxygen and water vapor, thereby retaining a stable EPR signal. | 06-09-2016 |
| 324317000 | Including a test sample and control sample | 2 |
| 20090079429 | Method for determining the absolute number of electron spins in a sample of extended size - In a method for determining an absolute number of electron spins in an extended sample ( | 03-26-2009 |
| 20090230962 | METHOD AND APPARATUS FOR IN-SITU MEASUREMENT OF SOOT BY ELECTRONSPIN RESONANCE ( ESR) SPECTROMETRY - An instrument and method using electron spin resonance spectrometry for measuring the concentration of airborne soot particles, and the like, that includes continuously passing a sample of exhaust gas through a resonating RF microwave cavity resonator during the application therethrough of a uniform slowly varying uniform magnetic field that is rapidly modulated and measuring the resulting phase modulation or amplitude modulation thereof to derive an electron spin resonance signal that directly senses the concentration of carbon free radicals produced as a result of inefficient combustion of hydrocarbons during operation of the vehicle or boiler. A further invention is the use of this signal for feedback control of the engine or boiler operating parameters to minimize or substantially eliminate particulate matter emissions. | 09-17-2009 |
