| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 324464000 | For analysis of gas, vapor, or particles of matter | 64 |
| 20080265903 | Plasma Diagnostic Apparatus And Method - Provided is a plasma diagnostic apparatus includes a probe unit, which is inserted into a plasma or disposed at boundary of a plasma, the apparatus includes: a signal supplying unit having a signal supplying source; a current detecting/voltage converting unit for applying a periodic voltage signal applied from the signal supplying unit to the probe unit, detecting the magnitude of the current flowing through the probe unit, and converting the detected current into a voltage; and a by-frequency measurement unit for computing the magnitude and phase of individual frequency components of the current flowing through the probe unit by receiving the voltage output from the current detecting/voltage converting unit as an input. | 10-30-2008 |
| 20090058424 | Plasma monitoring method and plasma monitoring system - A plasma monitoring method using a sensor, the sensor having a substrate; a first electrode, the first electrode being a conductive electrode and formed on the substrate while being isolated from the substrate; an insulating film formed on the first electrode; a contact hole formed in the insulating film and having a depth from a surface of the insulating film to the first electrode; and a second electrode, the second electrode being a conductive electrode, formed on the surface of the insulating film, and faced to plasma during a plasma process, the plasma monitoring method including measuring and monitoring potentials of the first electrode and the second electrode or a potential difference between the first electrode and the second electrode during the plasma process is disclosed. A plasma monitoring system carrying out the plasma monitoring method is also disclosed. | 03-05-2009 |
| 20090230973 | PLANAR TYPE FREQUENCY SHIFT PROBE FOR MEASURING PLASMA ELECTRON DENSITIES AND METHOD AND APPARATUS FOR MEASURING PLASMA ELECTRON DENSITIES - A planar type frequency shift probe that utilizes resonance of electromagnetic waves and includes a main body with a conductor plate and a coaxial cable. The main body includes a long narrow space, which has predetermined width and length and has an opening on the periphery of the main body, as well as the first surface part and the second surface part. The surface conductor of the coaxial cable is connected to the first surface part while the core conductor of the coaxial cable is connected to the second surface part via a lead wire. | 09-17-2009 |
| 20090322342 | METHODS FOR AUTOMATICALLY CHARACTERIZING A PLASMA - A method for automatically characterizing plasma during substrate processing is provided. The method includes collecting a set of process data, which includes at least data about current and voltage. The method also includes identifying a relevancy range for the set of process data, wherein the relevancy range includes a subset of the set of process data. The method further includes determining a set of seed values. The method yet also includes employing the relevancy range and the set of seed values to perform curve-fitting, wherein the curve-fitting enables the plasma to be automatically characterized. | 12-31-2009 |
| 20100090703 | MOLECULAR SHIELD FOR AN IONIZATON VACUUM GAUGE - A system for measuring gas density in a vacuum includes a gauge, a housing for containing the gauge, and a magnet secured to an exterior surface of the housing. The magnet is a flexible magnetic strips, and positioned around the exterior surface of the housing. The gauge includes grid insulator posts extending longitudinally along a tubular section of the housing, and the magnet is secured to the exterior surface of the housing adjacent to the grid insulator posts, and oriented transversely to the grid insulator posts. The magnet is a flexible magnetic strip, and a clamp secures the magnet to the exterior surface of the housing. | 04-15-2010 |
| 20100134116 | RESIDUAL GAS ANALYZER - Provided is an excellent residual gas analyzer, which can perform measurement by being suitably arranged even in small areas, such as those in semiconductor equipments, and can perform measurement to display of measurement results without an external personal computer. The analyzer is provided with a sensor unit ( | 06-03-2010 |
| 20100171504 | DOSE PROFILE MEASUREMENT SYSTEM FOR CLINICAL PROTON FIELDS - A beam profile measurement detector is a tool to efficiently verify dose distributions created with active methods of a clinical proton beam delivery. A Multi-Pad Ionization Chamber (MPIC) has 128 ionization chambers arranged in one plane and measure lateral profiles in fields up to 38 cm in diameter. The MPIC pads have a 5 mm pitch for fields up to 20 cm in diameter and a 7 mm pitch for larger fields, providing an accuracy of field size determination of about 0.5 mm. The Multi-Layer Ionization Chamber (MLIC) detector contains 122 small-volume ionization chambers stacked at a 1.82 mm step (water-equivalent) for depth-dose profile measurements. The MLIC detector can measure profiles up to 20 cm in depth, and determine the 80% distal dose fall-off with about 0.1 mm precision. Both detectors can be connected to the same set of electronics modules, which form the detectors' data acquisition system. The detectors operate in proton fields produced with active methods of beam delivery such as uniform scanning and energy stacking. The MPIC and MLIC detectors can be used for dosimetric characterization of clinical proton fields. | 07-08-2010 |
| 20100253360 | CORONA EFFLUENT SENSING DEVICE - The presently disclosed embodiments are directed to the detection and monitoring of corona effluent. The present embodiments pertain to a corona sensing device that employs a film of organic charge transporting material, as the active component in a corona effluent sensing device, that is disposed onto a patterned electrode bearing support member. | 10-07-2010 |
| 20100253361 | SENSOR, SENSOR SYSTEM, PORTABLE SENSOR SYSTEM, METHOD OF ANALYZING METAL IONS, MOUNTING SUBSTRATE, METHOD OF ANALYZING PLATING PREVENTING CHEMICAL SPECIES, METHOD OF ANALYZING PRODUCED COMPOUND, AND METHOD OF ANALYZING MONOVALENT COPPER CHEMICAL SPECIES - This invention provides a sensor having such a structure that the area in which a sensor electrode comes into contact with a liquid, a mist or a gas containing an analyte has been previously specified. The sensor comprises at least an electroconductive first electrode, an electroconductive second electrode, electroconductive first and second wirings connected to the first and second electrodes, and an insulating part for insulating the first and second wirings from each other and from a liquid, a mist or a gas containing the analyte. The insulating part is formed of an organic material. In the first and second electrodes, at least the surface, which comes into contact with a liquid, a mist or a gas containing the analyte, is formed of a material which is insoluble in a liquid or a mist containing the analyte, or is not attacked by a gas containing the analyte. | 10-07-2010 |
| 20100301870 | FLAME IONIZATION DETECTOR - The flame ionization detector, which comprises a supply and an ignition device ( | 12-02-2010 |
| 20100301871 | GAS SENSOR - An electrochemical gas sensor is provided. The gas sensor includes a first electrode and a second electrode wherein the two electrodes are connected via an ion-conducting material. The first electrode is covered, at least in part, by a first catalytically active material. This top layer permits the catalytic reaction of gases. Thermally and chemically stable catalysts such as SCR or NO | 12-02-2010 |
| 20100321029 | PLASMA MEASURING METHOD, PLASMA MEASURING DEVICE AND STORAGE MEDIUM - Provided is a technique capable of ascertaining the process condition of the boundary between electrically positive and negative plasma regions. In a vacuum chamber, one of the parameters of process conditions is stepwisely changed to generate a plasma under at least three process conditions. The parameters include a flow rate ratio between an electrically negative gas and an electrically positive gas, a pressure in the vacuum chamber and the magnitude of an energy supplied to the gases. Next, a voltage is applied to a Langmuir probe positioned in that plasma, and a current-voltage curve indicating the relationship between the applied voltage and the electric current to flow through the probe is acquired for each of the process conditions. On the basis of the current-voltage curve group acquired, the process conditions are determined for the boundary between the electrically positive and negative plasma regions. | 12-23-2010 |
| 20100327873 | MULTI-DIAGNOSTIC APPARATUS FOR SUBSTRATE-LEVEL MEASUREMENTS - Described herein is a method and apparatus for diagnosing processing equipment with a multi-diagnostic device. In one embodiment, a multi-diagnostic device is located in a plasma processing environment and includes an electronic circuitry. The device includes a first array of sensors and a second array of sensors. The circuitry is used to simultaneously (or nearly simultaneously) measure the distributions of ion saturation current and the potential at the device using the first array of sensors and to measure resistances of the second array of sensors to determine the distribution of the temperature at the surface of the device. | 12-30-2010 |
| 20100327874 | ELECTRO-DIFFUSION ENHANCED BIO-MOLECULE CHARGE DETECTION USING ELECTROSTATIC INTERACTION - According to one aspect, the disclosure is directed to an example embodiment in which a circuit-based arrangement includes a circuit-based substrate securing a channel, with an effective width that is not limited by the Debye screening length, along a surface of the substrate. A pair of reservoirs are included in or on the substrate and configured for containing and presenting a sample having bio-molecules for delivery in the channel. A pair of electrodes electrically couple a charge in the sample to enhance ionic current flow therein (e.g., to overcome the electrolyte screening), and a sense electrode is located along the channel for sensing a characteristic of the biological sample by using the electrostatic interaction between the enhanced ionic current flow of the sample and the sense electrode. Actual detection occurs by using a charge-signal processing circuit to process the sensed charge signal and, therefrom, provide an output indicative of a signature for the bio-molecules delivered in the channel. | 12-30-2010 |
| 20110018545 | HELIUM SENSOR - The helium sensor comprises a housing that encloses a detection chamber. A side of the housing is closed by a permeable wall that is selective for helium. In the detection chamber, there is located an ion getter pump comprising an anode, a cathode and a magnetic field. The cathode, or a cathode leg is made of beryllium. Beryllium has a low atomic mass, whereby the likewise light-weight helium ions can be better incorporated into the cathode material. | 01-27-2011 |
| 20110018546 | Discharge Ionization Current Detector - A low-frequency high AC voltage from an excitation voltage power source ( | 01-27-2011 |
| 20110050242 | ION GAUGE, A MONITORING SYSTEM AND A METHOD FOR DETERMINING A TOTAL INTEGRATED CONCENTRATION OF SUBSTANCES HAVING SPECIFIC MOLECULAR WEIGHT IN A GAS SAMPLE - The invention relates to anion gauge | 03-03-2011 |
| 20110050243 | Particle Measurement Process and Apparatus - A process for measuring particle concentrations in a gas using an ejector for producing an essentially constant sample flow and for efficient mixing of the particle-containing sample and and essentially clean, ionized gas. The invention also relates to an apparatus implementing such process. The process and the apparatus can be utilized for example in measuring particle concentrations in an exhaust system of a combustion engine. | 03-03-2011 |
| 20110115492 | METHODS AND APPARATUS FOR DETECTING THE CONFINEMENT STATE OF PLASMA IN A PLASMA PROCESSING SYSTEM - Methods and systems for detecting a change in the state of plasma confinement within a capacitively coupled RF driven plasma processing chamber are disclosed. In one or more embodiments, the plasma unconfinement detection methods employ an analog or digital circuit that can actively poll the RF voltage at the powered electrode in the form of an Electrostatic Chuck (ESC) as well as the open loop response of the power supply (PSU) responsible for chucking a wafer to ESC. The circuit provides a means detecting both a change in RF voltage delivered to the ESC as well as a change in the open loop response of the PSU. By simultaneously monitoring these electrical signals, the disclosed algorithm can detect when plasma changes from a confined to an unconfined state. | 05-19-2011 |
| 20110133746 | Discharge Ionization Current Detector - To reduce the cost of a high-voltage power supply unit by reducing the discharge starting voltage for a low-frequency dielectric barrier discharge. | 06-09-2011 |
| 20110187379 | Discharge Ionization Current Detector - A discharge ionization current detector capable of supplying plasma gas in large quantity to stabilize plasma simultaneously with lowering the sample dilution ratio to improve detection sensitivity is provided. A gas supply pipe | 08-04-2011 |
| 20110234234 | SUBSTANCE DETECTION METHOD AND SUBSTANCE DETECTION DEVICE - A detection method of detecting a target substance, the method includes exciting the target substance by irradiating an atmosphere of a detection space with light having a first wavelength that excites the target substance from a ground state to an excited state on the basis of the energy level structure of the target substance; ionizing the target substance by irradiating the atmosphere of the detection space with light having a second wavelength that excites the target substance from the excited state to an energy state substantially equal to or higher than a vacuum level; making the ionized target substance adsorb to a detector by electric field acceleration; and detecting the amount of adsorption of the target substance. | 09-29-2011 |
| 20110234235 | Surface Ionization Detector - The present invention refers to a surface ionization detector comprises an emitter, a heating rod, a collecting electrode, a reducing liner and a housing. The emitter is made of molybdenum, platinum or alloy, and in the form of cylinder or a wire spiral. The heating rod heats and supports the metal emitter. When the heating rod is heated to 300-500° C., organic amine compounds collide with the surface of the emitter, generating positive ions through surface thermal ionization and thus are detected. The lowest detecting limit value of tertiary amine by the detector in the present invention can achieve to 10 | 09-29-2011 |
| 20110260732 | Discharge Ionization Current Detector - A discharge ionization current detector using a low-frequency dielectric barrier discharge with an improved S/N ratio is provided. A current detector | 10-27-2011 |
| 20110298465 | PROCESS MONITOR AND SEMICONDUCTOR MANUFACTURING APPARATUS - A sensor on a semiconductor wafer is used as a process monitor and a capacitor is employed as a power supply for the sensor. The capacitor can be formed by stacking a poly-silicon layer and a silicon nitride layer on the wafer. A timer can be used to specify an operation time or an operation timing, etc. Furthermore, unauthorized use is prevented by storing a keyword in an ROM of the process monitor. | 12-08-2011 |
| 20110316551 | Discharge Ionization Current Detector - A technique for reducing an electromagnetic noise entering an electrode or a drift of a signal due to a fluctuation in the ambient temperature is provided to improve the S/N ratio of a signal originating from a component of interest. A dummy electrode | 12-29-2011 |
| 20110316552 | Discharge Ionization Current Detector - A discharge ionization current detector using a low-frequency barrier discharge is provided to improve the linearity of detection sensitivity with respect to a sample introduction amount. From a lower end of a lower gas passage | 12-29-2011 |
| 20120098545 | Plasma Diagnostic Apparatus And Method For Controlling The Same - An example embodiment relates to a plasma diagnostic apparatus that exists outside of a plasma generation chamber. The plasma diagnostic apparatus is configured to recognize and/or diagnose a state of plasma using a signal flowing from a floated electrode of a plasma generation apparatus to determine a diagnostic factor of the plasma. | 04-26-2012 |
| 20120229143 | SENSITIVITY CORRECTION METHOD FOR DOSE MONITORING DEVICE AND PARTICLE BEAM THERAPY SYSTEM - In a particle beam therapy system which scans a particle beam and irradiates the particle beam to an irradiation position of an irradiation subject and has a dose monitoring device for measuring a dose of the particle beam and an ionization chamber smaller than the dose monitoring device, the ionization chamber measuring a dose of a particle beam passing through the dose monitoring device, the dose of the particle beam irradiated by the dose monitoring device is measured; the dose of the particle beam passing through the dose monitoring device is measured by the small ionization chamber; and a correction coefficient of the dose measured by the dose monitoring device corresponding to the irradiation position is found based on the dose of the particle beam measured by the small ionization chamber. | 09-13-2012 |
| 20120262182 | FINE PARTICLE DETECTION SYSTEM - There is provided a fine particle detection system with a fine particle sensor, a cable and a sensor drive control device. The fine particle sensor has an ion source unit with first and second electrodes, a particle charging unit and inner and outer sensor casings. The cable has a power supply wiring line connected to the second electrode, an inner shield line electrically continuous with the inner sensor casing and an outer shield line electrically continuous with the outer sensor casing. The sensor drive control device has an ion-source power supply circuit, a signal current detection circuit, an inner circuit casing electrically continuous with a first output terminal of the ion-source power supply circuit and surrounding the ion-source power supply circuit and an outer circuit casing connected to the ground potential and shielding the ion-source power supply circuit, the signal current detection circuit and the inner circuit casing. | 10-18-2012 |
| 20130154657 | Method and Apparatus for Detecting Smoke in an ION Chamber - A smoke detection sensor ion chamber has a capacitance and a change in the permittivity of that capacitance dielectric (ionized air in the chamber) may be used to detect the presence of smoke therein. Smoke from typical fires is mainly composed of unburned carbon that has diffused in the surrounding air and rises with the heat of the fire. The permittivity of the carbon particles is about 10 to 15 times the permittivity of clean air. The addition of the carbon particles into the air in the ion chamber changes in the permittivity thereof that is large enough to measure by measuring a change in capacitance of the ion chamber. | 06-20-2013 |
| 20130154658 | Discharge Ionization Current Detector - A discharge ionization current detector that is durable and produced at a low cost is provided. An electrode structure of a dielectric-coated metal tube, with an insulator-coated metal wire included therein, is inserted from above into a first gas passage including a dielectric tube. The metal tube is connected to the ground on the upstream side of the first gas passage. One end of the metal wire is extracted from the upstream side of the first gas passage to the outside and connected to a bias power source. An area is not covered with the insulator is provided at the other end of the wire. This area is arranged in a second gas passage, which extends from the downstream end of the first gas passage. A metal electrode consisting of a flanged metal tube is placed in the second gas passage and connected to an ionization current detecting circuit 34. | 06-20-2013 |
| 20130221972 | DISCHARGE IONIZATION CURRENT DETECTOR - A discharge ionization current detector is provided with a dielectric tube through which plasma generating gas flows, a plasma generating unit formed from one section of the dielectric tube in a flow direction of the plasma generating gas, a casing connected to a lower end portion, in the flow direction of the plasma generating gas, of the dielectric tube, a sample ionization unit provided inside the casing, and an ion current detection unit for detecting a sample component ionized by the sample ionization unit. The lower end, in the flow direction of the plasma generating gas, of the dielectric tube protrudes into the space inside the casing. | 08-29-2013 |
| 20130271150 | GRAPHENE TRANSISTOR GATED BY CHARGES THROUGH A NANOPORE FOR BIO-MOLECULAR SENSING AND DNA SEQUENCING - A technique for a nanodevice is provided. A reservoir is separated into two parts by a membrane. A nanopore is formed through the membrane, and the nanopore connects the two parts of the reservoir. The nanopore and the two parts of the reservoir are filled with ionic buffer. The membrane includes a graphene layer and insulating layers. The graphene layer is wired to first and second metal pads to form a graphene transistor in which transistor current flowing through the graphene transistor is modulated by charges or dipoles passing through the nanopore. | 10-17-2013 |
| 20140070814 | DISCHARGE IONIZATION CURRENT DETECTOR AND GAS CHROMATOGRAPH - To provide a discharge ionization current detector | 03-13-2014 |
| 20140097853 | INTERFERENCE COMPENSATED PHOTOIONIZATION DETECTOR - An integrated sensor of volatile organic gas can include a photoionization detector (PID) and one or more additional detectors such as an infrared detector, a catalytic combustion detector, or an electrochemical detector. One embodiment includes a methane detector that allows correction of the PID measurements for the interference of methane with the PID and/or allows a combination of measurements of the sensors to measure a total hydrocarbon concentration. A further sensor of non-hydrocarbon quenching gases such as carbon dioxide may also be used in correction of the PID measurements. | 04-10-2014 |
| 20140132277 | Photo ionization detector for gas chromatography having two separately ionizing sources and methods of use - A detector for gas chromatography using two ionization sources within a single body to separately provide ionization energy to a column gas eluent to provide electrical discharge to two or more collecting electrodes provides improved selectivity and may be so used. Use is made of combined bias/collecting electrodes. The use of two ionization sources permits generation of two detector outputs from within a common body and of a common constituent flow. The ionization sources and any applicable discharge gas and dopant may be selected based on desired selectivity. | 05-15-2014 |
| 20140145724 | DISCHARGE IONIZATION CURRENT DETECTOR - A low-OH-content quartz glass with an OH content equal to or lower than 5 ppm is used as a cylindrical tube ( | 05-29-2014 |
| 20140232414 | SIMULTANEOUS ION SENSING AND GAS SAMPLING IN COMBUSTION ENGINE CYLINDERS AND OTHER COMBUSTION SYSTEMS - A system and method is provided for simultaneous ion current sensing and gas analysis. The system acquires an ion current signal and analyzes the composition of a corresponding gas sample. | 08-21-2014 |
| 20140266231 | IONIZED GAS DETECTOR AND IONIZED GAS DETECTING METHOD - An ionized gas detector includes at least a pair of ion detecting electrodes that detect ions of the ionized measuring-subject gas, an electrode-voltage applying unit that applies a given voltage to the ion detecting electrodes, the electrode-voltage applying unit being configured to be capable of reversing its voltage polarity, a charge amplifier circuit having a charge capacitor that accumulates electric charges generated by voltage application by the electrode-voltage applying unit, an ion current calculating unit that calculates the value of an ion current of ions of the measuring-subject gas, based on a time-dependent change of the volume of electric charges accumulated in the charge capacitor of the charge amplifier circuit, and a concentration determining unit that determines the concentration of the measuring-subject gas, based on an ion current value calculated by the ion current calculating unit. | 09-18-2014 |
| 20140347062 | Photo ionization detector for gas chromatography having at least two separately ionizing sources - A detector for gas chromatography using two or more ionization sources within a single body to separately provide ionization energy to a column gas eluent to provide electrical discharge to two or more collecting electrodes provides improved selectivity and may be so used. Use is made of combined bias/collecting electrodes or of sets of separated bias and collecting electrodes. The use of multiple ionization sources permits generation of multiple detector outputs from within a common body and of a common constituent flow. The ionization sources and any applicable discharge gas and dopant may be selected based on desired selectivity. | 11-27-2014 |
| 20150042354 | ANALYSIS DEVICE PROVIDED WITH DISCHARGE IONIZATION CURRENT DETECTOR - An analysis device comprising a discharge ionization current detector, a plasma gas supply section, a sample gas supply section, a flow rate setting condition holding section and a gas flow rate setting means controller. The flow rate setting condition holding section holds, as a flow rate setting condition, a relationship between a sample gas supply flow rate from the sample gas supply section and a supply flow rate of plasma gas to be set with respect to the sample gas supply flow rate and the gas flow rate controller is configured to set a plasma gas supply flow rate from the plasma gas supply section to a flow rate according to the sample gas supply flow rate, based on the flow rate setting condition held in the flow rate setting condition holding section. | 02-12-2015 |
| 20150054521 | DISCHARGE IONIZATION CURRENT DETECTOR AND METHOD FOR AGING TREATMENT OF THE SAME - An aging treatment is performed by using cleaning gas obtained by mixing inert gas, as an impurity, to plasma gas. Plasma generation by dielectric-barrier discharge is performed until a predetermined period of time has elapsed by applying high AC voltage to an electrode while supplying the cleaning gas to a dielectric tube from a gas inlet. | 02-26-2015 |
| 20150091581 | ISFET ARRAY FOR DETECTING A SINGLE NUCLEOTIDE POLYMORPHISM - Apparatus comprising a module for detecting a single nucleotide polymorphism, SNP, within a genome and comprising: four reaction chambers for receiving a fluid sample, the reaction chambers each containing a different one of the bases A, C, G, T, and a primer; a reference electrode which in use is immersed in said fluid sample; a pair of Ion Sensitive Field Effect Transistors, ISFETs, associated with each reaction chamber, the ISFETs of each pair comprising respective sensing membranes, or a common sensing membrane, exposed within the associated reaction chamber; and a plurality of difference detectors, each difference detector having a pair of inputs coupled respectively to outputs of ISFETs associated with different reaction chambers. | 04-02-2015 |
| 20150102822 | PARTICLE COUNT MEASUREMENT DEVICE - A particle count measurement device includes a preprocessing section configured to place an aerosol introduced into a measurement region in an electrical state of any of a neutralized state, a positively charged state or a negatively charged state, a unipolar charging section configured to place the aerosol which has been introduced in an electrical state different from at a time of introduction, an ion trap arranged on a downstream of the unipolar charging section in terms of a flow of the aerosol for generating an electric field that draws only gas ions in the aerosol, an exhaust mechanism configured to discharge the aerosol from the measurement region at a constant flow rate, and an ammeter for detecting, as a measurement value corresponding to a particle count concentration, a difference between current supplied by the unipolar charging section and current flowing into the ion trap. | 04-16-2015 |
| 20150123670 | IN SITU SENSING OF COMPOUNDS - The disclosure features systems and methods for detecting organic compounds that include: (a) a transfer line; (b) a probe connected to a first end of the transfer line, the probe including an inlet port and a membrane positioned across an opening in the inlet port; (c) an analysis unit connected to a second end of the transfer line; and (d) an electronic controller. The analysis unit can include a valve featuring multiple ports, a first detection unit configured to measure a photoionization current, and a second detection unit configured to identify chemical compounds, and a trap configured to condense chemical compounds from a vapor phase to a liquid phase. The electronic controller is connected to the valve, the first and second detection units, and the trap. | 05-07-2015 |
| 20150130473 | Miniaturized Helium Photoionization Detector - The present invention provides an ionization detector having a base having an enclosed chamber. The enclosed chamber has a first end and a second end. The detector also includes a first outlet which is a source of an excitable medium. A second outlet is provided which functions a source of an analyte that is transported by a carrier gas. An ionization source for creating a discharge from said excitable medium is also provided. The collector electrode generates a time dependent current based on its interaction with ionized analytes from which the analyte may be detected. | 05-14-2015 |
| 20150330945 | APPARATUS FOR IN REAL TIME DETECTING BIOLOGICAL PARTICLE AND NON-BIOLOGICAL PARTICLE IN THE ATMOSPHERE AND METHOD FOR DETECTING BIOLOGICAL PARTICLE AND NON-BIOLOGICAL PARTICLE USING THE SAME - The present invention relates to apparatus for in real time detecting biological particles and non-biological particles in the atmosphere, the apparatus comprising: an impactor adapted to sort the biological particles and non-biological particles absorbed from the outside by size; a charger adapted to charge the biological particles and non-biological particles sorted by means of the impactor to specific charge (positive or negative charge); a separator adapted to introduce the biological particles and non-biological particles charged by the charger thereinto and to sort the biological particles and non-biological particles charged to different charge quantities from each other; and a particle measurement sensor adapted to measure the concentrations of the particles discharged from an outlet. | 11-19-2015 |
| 20150355142 | SENSOR ELEMENT AND GAS SENSOR - A sensor element | 12-10-2015 |
| 20150369777 | DISCHARGE IONIZATION CURRENT DETECTOR AND TUNING METHOD FOR THE SAME - An adjusting method for a discharge ionization current detector of the present invention is provided for a discharge ionization current detector for a gas chromatograph, which improves the precision and reproducibility of measurements results of the detector. The discharge ionization current detector adjusts at least one of purity of introduced helium gas, a flow rate of the introduced helium gas, an amplitude of voltage of the low-frequency dielectric barrier discharge, and a frequency of the voltage of the low-frequency dielectric barrier discharge so that intensity of light having a wavelength of 640 nm reaches the maximum in a range of wavelengths of 250 to 700 nm with respect to light emitted by the helium plasma. | 12-24-2015 |
| 20160049288 | TRANSMISSION WINDOW FOR A VACUUM ULTRAVIOLET GAS DISCHARGE LAMP - A transmission window ( | 02-18-2016 |
| 20160109404 | CHEMICAL/PHYSICAL PHENOMENON DETECTING DEVICE AND METHOD OF PRODUCING THE SAME - An ion sensor is configured such that part of a P well on which part a sensing section is provided is different, in dopant concentration, from the other part of the P well so that electric charges are injected merely to the sensing section in a state where a voltage is applied to an N-type substrate. | 04-21-2016 |
| 324466000 | Using a filter | 3 |
| 20110156715 | Environmental Monitoring System and Method With a Prefilter - Various environmental systems are disclosed. In accordance with one of the systems, a first and second valve are provided. The valves provide a first air flow path from an air pump to a photo-ionization detector is provided through a pre-filter. The valves also provide a second air flow path from the air pump to the photo-ionization detector so that the pre-filter is isolated from its environmental surroundings. Various other arrangements of environmental monitoring systems with one or more pre-filters are also disclosed. | 06-30-2011 |
| 20140320146 | ION CHROMATOGRAPH - A suppressor is structured by an ion exchange section being structured by an eluate path forming member forming an eluate path and a regenerant path forming member forming a regenerant path being stacked across an ion exchange film, and a heat-conductive heat block covering the outside of the ion exchange section. A separation column, the suppressor, and an electrical conductivity meter are accommodated in a common constant temperature bath. The inside of the constant temperature bath is feedback-controlled by a temperature control section so as to be maintained at constant temperature. | 10-30-2014 |
| 20190145930 | SYSTEM HAVING A PRE-SEPARATION UNIT | 05-16-2019 |
| 324468000 | Using thermal ionization | 4 |
| 20100045300 | DEVICE AND METHOD FOR COUPLED MEASUREMENTS FOR GLOBALLY AND CONTINUOUSLY TRACKING TRACES OF TARS PRESENT IN A GAS FLOW - The measurement is carried out by means of two non-dissociable measurement chains resulting in a continuous measurement which is representative of the total concentration of tars (even as traces) of a hot gas. It involves coupling of methods including one, SPME/GC/MS/PID, which is discontinuous and a priori partial, the other, PID, which is continuous but difficult to interpret alone. It is based on on-line processing of the elements transmitted by each of the measurement methods used. A tar generator ( | 02-25-2010 |
| 20100171505 | Supplemental air system for a portable, instrinsically safe, flame ionization detector (FID) device - A supplemental air system for a portable, intrinsically safe (IS), flame ionization detector (FID) device includes a portable, intrinsically safe, FID device and a supplemental air system coupled to the FID device configured to store compressed air and deliver a flow of regulated air to the FID device as needed. | 07-08-2010 |
| 20100171506 | Explosion-proof detector assembly for a flame ionization detector (FID) - An explosion-proof detector assembly for a flame ionization detector (FID) including an explosion-proof detector assembly enclosure configured to house the FID therein. A vent assembly coupled to the assembly enclosure includes a sintered metal frit configured to allow exhaust generated by the FID to vent from the detector assembly enclosure. A hydrogen supply line assembly coupled to the assembly enclosure includes a sintered metal frit configured to deliver a supply of hydrogen to the FID. A sample line assembly coupled to the enclosure includes a sintered metal frit configured to deliver a sample gas to the FID. A pressure relief assembly coupled to the assembly enclosure includes a sintered metal frit configured to ensure the pressure inside the detector assembly enclosure does not exceed a predetermined pressure. The sintered metal frit of the vent assembly, the hydrogen supply line assembly, the sample line assembly, and the pressure relief assembly are each configured to prevent a flame generated by the FID from contacting an explosive atmosphere outside the assembly enclosure, dissipate heat such that the temperature thereof does not exceed a predetermined temperature, and create an explosion-proof seal. An electrical conduit assembly is configured to house a plurality of data communication and power wires and is configured to prevent a flame generated by the FID from contacting an explosive atmosphere outside the detector assembly enclosure, dissipates heat such that the temperature of all surfaces thereof does not exceed a predetermined temperature, and creates an explosion-proof seal. | 07-08-2010 |
| 20140035593 | METHOD FOR THE PRODUCTION OF A FLAME IONIZATION DETECTOR AND CORRESPONDING FLAME IONIZATION DETECTOR - A flame ionization detector having at least one combustion chamber, at least one conduit for directing a gas or gas mixture, and at least one electrode structure, and a process for forming the flame ionization detector by providing two or more green ceramic films, forming geometric structures in said green ceramic films, depositing at least a portion of an electrically conductive structure on at least one of said green ceramic films, stacking said green ceramic films, laminating said green ceramic films, and sintering said laminated green ceramic films to faun said flame ionization detector. | 02-06-2014 |
| 324469000 | Using a radioactive substance | 4 |
| 20090174412 | Detection Systems - An IMS system or the like has dopant contained in a way such that it is only released when needed. The dopant could be contained in a device ( | 07-09-2009 |
| 20130088238 | Differential Current Measurements to Determine ION Current in the Presence of Leakage Current - An ion chamber provides a current representative of its characteristics as affected by external conditions, e.g., clean air or smoke. A direct current (DC) voltage is applied to the ion chamber at a first polarity and the resulting current through the ion chamber and parasitic leakage current is measured at the first polarity, then the DC voltage is applied to the ion chamber at a second polarity opposite the first polarity, and the resulting current through the ion chamber and parasitic leakage current is measured at the second polarity. Since substantially no current flows through the ion chamber at the second polarity, the common mode parasitic leakage current contribution may be removed from the total current measurement by subtracting the current measured at the second polarity from the current measured at the first polarity, resulting in just the current through the ion chamber. | 04-11-2013 |
| 20130154659 | Method and Apparatus for Detecting Smoke in an ION Chamber - A smoke detection sensor ion chamber has a leakage current that is dependent upon the permittivity of the ionized gas (air) in the chamber. Smoke from typical fires is mainly composed of unburned carbon that has diffused in the surrounding air and rises with the heat of the fire. The permittivity of the carbon particles is about 10 to 15 times the permittivity of clean air. The addition of the carbon particles into the air in the ion chamber changes the permittivity thereof that is large enough to detect by measuring a change in the leakage current of the ion chamber. | 06-20-2013 |
| 20150028882 | Trace Gas Concentration in ART MS Traps - A method of detecting specific gas species in an ion trap, the specific gas species initially being a trace component of a first low concentration in the volume of gas, includes ionizing the gas including the specific gas species, thereby creating specific ion species. The method further includes producing an electrostatic potential in which the specific ion species are confined in the ion trap to trajectories. The method also includes exciting confined specific ion species with an AC excitation source having an excitation frequency, scanning the excitation frequency of the AC excitation source to eject the specific ion species from the ion trap, and detecting the ejected specific ion species. The method further includes increasing the concentration of the specific ion species within the ion trap relative to the first low concentration prior to scanning the excitation frequency that ejects the ions of the specific gas species. | 01-29-2015 |
| 324470000 | Using thermionic emission | 1 |
| 20140300369 | SENSOR APPARATUS AND METHOD FOR USE WITH GAS IONIZATION SYSTEMS - An ion mobility gas detector apparatus including a detector core, an inlet gas path, an exhaust gas path, a source of diluent gas, and at least one or more sensors for measuring temperature, pressure and humidity of gas streams. Further included is a mixing mechanism adapted to mix at least first and second gas streams in response to one or more sensor measurements. A controller is provided for applying drive signals to the detector core. | 10-09-2014 |
