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Class 436/153 - Of an ionized gas


Subclass of Class 436 - Chemistry: analytical and immunological testing
Definition: Subject matter wherein an electric or magnetic property
No. of patents: 75
Last issue date: 08/26/2008


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NumberTitleIssue Date
7416902Method and apparatus for airborne particle sorting
An apparatus for airborne particle sorting is provided comprising a charging system adapted for applying an electrostatic charge to the particles, such that particles of at least a first group are deflected to a greater extent than particles of a second group are de...
08/26/2008
7268347Ion detecting apparatus and methods
Ion injection in a drift tube apparatus for mobility spectrometry was accomplished without conventional ion shutters such as the Bradbury-Nielson or similar designs common to such drift tubes. Instead ions were passed between the ion source and drift region by using...
09/11/2007
7255834Method and devices for improving the dynamic flash combustion reaction connected with gas chromatography for the elemental analysis of C H N S O
A method and device are provided for dynamic flash combustion reaction connected with gas chromatography for the elemental analysis of C H N S O in an automatic elemental analyzer. A combustion reactor is provided with a sampling device and an oxygen feed line. Cont...
08/14/2007
7247845Method and device for cluster fragmentation
A method for cluster fragmentation comprises the production of at least one cluster which contains a carrier substance and the fragmentation of the cluster into cluster fragments, with the cluster being loaded before the fragmentation with at least one reaction part...
07/24/2007
7201878Aerosol particle analyzer for measuring an analyte in airborne particles
Aerosol particle analyzer (APA) for measuring an analyte in airborne particle is described. Airborne particles are first given an electrical charge and then drawn in air past an oppositely charged volume of an analysis liquid that exposed to the air at a small hole ...
04/10/2007
7201879Aerosol into liquid collector for depositing particles from a large volume of gas into a small volume of liquid
An aerosol-into-liquid collector (ALC) for collecting gas-borne particles from a large volume of gas such as air into a small volume of liquid is described. The ALC uses a linear quadrupole to concentrate particles flowing in a gas and to help direct these concentra...
04/10/2007
7197880Lean blowoff detection sensor
Apparatus and method for detecting incipient lean blowoff conditions in a lean premixed combustion nozzle of a gas turbine. A sensor near the flame detects the concentration of hydrocarbon ions and/or electrons produced by combustion and the concentration monitored ...
04/03/2007
7155812Method for producing a tube
A method is described for producing tubular substrates having parallel spaced concentric rings of electrical conductors that can be used as the drift tube of an Ion Mobility Spectrometer (IMS). The invention comprises providing electrodes on the inside of a tube tha...
01/02/2007
7153475Aerosol particle analyzer for measuring the amount of analyte in airborne particles
Aerosol particle analyzer (APA) for measuring the amount of analyte in airborne particle is described. The APA uses an analysis liquid. In most embodiments, this analysis liquid is chosen so that when it is mixed with the particles, an optical property of the analys...
12/26/2006
7125726Method and kit for diagnosing myocardial infarction
The instant invention involves the use of a combination of preparatory steps in conjunction with mass spectroscopy and time-of-flight detection procedures to maximize the diversity of biopolymers which are verifiable within a particular sample. The cohort of biopoly...
10/24/2006
7125518Aerosol particle analyzer for measuring the amount of analyte in airborne particles
Aerosol particle analyzer (APA) for measuring the amount of analyte in airborne particle is described. The APA uses an analysis liquid. When this analysis liquid is mixed with the particles, an optical property of the analysis liquid (CDAL) varies according to the a...
10/24/2006
7096722Method and apparatus for detecting combustion instability in continuous combustion systems
An apparatus and method to sense the onset of combustion stability is presented. An electrode is positioned in a turbine combustion chamber such that the electrode is exposed to gases in the combustion chamber. A control module applies a voltage potential to the ele...
08/29/2006
7071465Ion mobility spectrometry method and apparatus
The invention includes an ion mobility spectrometer having a liquid filled drift chamber. The chamber has an ionization region partitioned from and an ion separation region by a reversible ion-migration block. An electrical field within the chamber allows ions to mi...
07/04/2006
6978657Portable chemical detection system with intergrated preconcentrator
A portable system for the detection of chemical particles such as explosive residue utilizes a metal fiber substrate that may either be swiped over a subject or placed in a holder in a collection module which can shoot a jet of gas at the subject to dislodge residue...
12/27/2005
6709632ICP analyzer
An ICP analyzer has a nebulizer for nebulizing a sample fluid for the purpose of analyzing microscopic impurities within the sample fluid, a plasma torch for introducing nebulized spray into a plasma, and a spray chamber disposed between the nebulizer and the plasma...
03/23/2004
6511850Pneumatic nebulizing interface to convert an analyte-containing fluid stream into an aerosol, method for using same and instruments including same
A self-adjusting, free-flowing pneumatic nebulizer interface is described for coupling fluid phase separation apparatus such as capillary electrophoresis apparatus or fluid-phase analyte delivery apparatus such as flow-injection analysis apparatus to gas ...
01/28/2003
6429020Flashback detection sensor for lean premix fuel nozzles
A sensor for detecting the flame occurring during a flashback condition in the fuel nozzle of a lean premix combustion system is presented. The sensor comprises an electrically isolated flashback detection electrode and a guard electrode, both of which ge...
08/06/2002
6369383Flexboard reflector
A novel technique utilizing the precision of printed circuit board design and the physical versatility of thin, flexible substrates is disclosed to produce a new type of ion reflector. A precisely defined series of thin conductive strips (traces) are etch...
04/09/2002
6284545Filter for gas sensor
A filter for reducing the cross-sensitivity of a chlorine dioxide detector to hydrogen sulfide. The filter includes a high surface area substrate impregnated with a silver (I) salt or copper (II) salt which is effective to remove hydrogen sulfide from a g...
09/04/2001
6077712Semiconductor chemical sensor
A chemical sensor for detecting a chemical species in a gas comprises a detector element including a porous organic semiconductor comprised of a material on which the chemical species in the gas is adsorbed. The chemical sensor further comprises a power s...
06/20/2000
6037179Method and apparatus for suppression of analyte diffusion in an ionization detector
Method and apparatus are disclosed for improved transfer of ionizing particles from a source chamber to a detection zone in an ionization chamber in an ionization detector. An ionization detector includes a source chamber, an inlet for introducing detecto...
03/14/2000
6032513Apparatus and method for measuring contaminants in semiconductor processing chemicals
An trace analyzer apparatus and method useful in semiconductor processing for measuring trace impurities in gases and liquids comprising a gas chromatograph serving to replace a bulk gas in a composition of bulk gas including contaminants in a bulk gas st...
03/07/2000
6033630Method and sensor for detecting volatile enantiomeric substances in gases
A method and sensor for distinguishing between different optical isomers (enantiomers), which sensor comprises a pair of spaced-apart contacts and a semi-conductive polymer material spanning the gap between the contacts, which polymer material includes ch...
03/07/2000
5980833Carbon monoxide sensor
A carbon monoxide sensor including a gas detecting portion and at least a pair of electrodes, wherein the gas detecting portion includes a metal oxide represented by a following formula; Cu1-x Bix Oy (0
11/09/1999
5969617Flame ionization detector
A flame ionization detector having a pair of spaced electrodes to which a DC voltage is applied and a flame produced between the electrodes by burning a gas whose composition is to be determined, thereby ions are produced which form an ion current between...
10/19/1999
5936413Method and device for measuring an ion flow in a plasma
The present invention relates to a method for measuring an ion flow from a plasma to a surface in contact therewith, consisting of measuring the rate of discharge of a measuring capacitor connected between a radiofrequency voltage source and a plate-shape...
08/10/1999
5874314Method for detecting organic vapors and aerosols
In a technique for detecting organic vapors and aerosols, e.g. of amines, hydrazines and nitrogen-containing compounds produced in combustion, molecules condense at a surface of a conductive device. By heating the conductive device in pulsed fashion, e.g....
02/23/1999
5869007Conducting polymer based acid/base sensors
Acid/base measuring sensor systems consisting of arrays of basic sensor cells are described which are constructed based on the chemical/electrical response characteristics of poly(aromatic amines). Protonation (doping) or deprotonation (de-doping) of the ...
02/09/1999
5866075Device useful for sensing ammonia and nitrogen oxides(s) gases at room temperature
A device for sensing ammonia (NH3) and nitrogen oxide (NOx) gases comprising: a sensor for detecting said ammonia and said nitrogen oxide gases, said sensor including a substrate and a layer consisting of cuprate material for detecti...
02/02/1999
5861752Method and apparatus for determining of absolute plasma parameters
According to a method and an apparatus for determining absolute plasma parameters in unsymmetrical radio frequency (RF) low-pressure plasmas, a radio frequency discharge current generated in a plasma reactor is measured in the form of analog signals at a ...
01/19/1999
5855850Micromachined photoionization detector
A photoionization detector includes a brittle substrate having a void micromachined therein with a void inlet and a void outlet. First and second electrodes are disposed in the void. An ultraviolet transparent member covers at least a portion of the void ...
01/05/1999
5824271Gas sensor
A substrate carrying a first electrode and a second electrode, the first and second electrodes being disposed adjacent to one another, the first electrode being disposed between the substrate and a gas-sensitive component, the gas sensitive component comp...
10/20/1998
5811059Automated, on-demand ion mobility spectrometry analysis of gas chromatograph effluents
A chemical sampling apparatus including an interface between a miniature mobility spectrometer and a gas chromatography system. The apparatus has a gas chromatography an ion mobility spectrometer and an input for inputting a regulated flow of a gas to b...
09/22/1998
5783445Methods and apparatus for isotopic analysis
The isotopic composition of a multiatomic isotope-bearing species such as CO2 in an analyte is measured by maintaining the analyte in a condition such that isotope-bearing species are present in an excited state and directing light at wavelengt...
07/21/1998
5741711Flame-based method and apparatus for analyzing a sample
A flame based method for analyzing a sample by introducing the sample into a combustible gas mixture, igniting the combustible gas mixture to produce a flame, and detecting a characteristic of the resulting flame to determine the identity and/or concentra...
04/21/1998
5728586Photoionization detector and process
A photoionization detector for a gaschromatographic apparatus includes an ionization chamber provided with a polarizing electrode and a collector electrode. The electrodes are mounted on and heated by a base portion of the detector. A lamp with a window s...
03/17/1998
5728584Method for detecting nitrocompounds using excimer laser radiation
A method for the ultra-sensitive detection of atmospheric and surface adsorbed nitrocompounds such as propellants, explosives, and nitro-pollutants employs an excimer (ArF) laser operating at or near 193 nm to photofragment the target molecule and facilit...
03/17/1998
5705931Method for determining absolute plasma parameters
In accordance with the method of the present invention, the radio frequency discharge current generated in a plasma reactor is measured in the form of analog signals at a portion of the reactor acting as an earth electrode. The analog signals are converte...
01/06/1998
5703488Instrument for measuring plasma excited by high-frequency
This instrument can measure parameters of a plasma accurately and easily even though the plasma is exited by a high-frequency. The instrument for measuring parameters of a plasma generated in a vacuum chamber by high-frequency discharge at a given frequen...
12/30/1997
5691642Method and apparatus for characterizing a plasma using broadband microwave spectroscopic measurements
A method and apparatus for accurately characterizing the electron density and distribution of a confined plasma on the basis of high-frequency, broadband electromagnetic measurements is disclosed herein. The technique involves noninvasive, broadband measu...
11/25/1997
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