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| Number | Title | Issue Date |
| 7832253 | Portable weather resistant gas chromatograph system A portable weather resistant gas chromatograph system with a gas chromatograph enclosure having a body and a movable door and a seal, a gas chromatograph with a frame assembly removably secured in the enclosure, a plurality of exhaust gas lines connected to the gas ... | 11/16/2010 |
| 7412872 | Process for screening outgas emissions in semiconductor processing The present description relates to a process for measuring outgas emissions in fabrication chambers used for semiconductors, micromachines and the like. In one embodiment, the invention includes inserting a gas adsorption material into a processing chamber exhaust v... | 08/19/2008 |
| 7360434 | Apparatus and method to measure air pressure within a turbine airfoil A pressure tap probe having a flexible probe tip that is flexible enough to seal a film cooling hole having a roughened surface such as a TBC applied around the hole. The flexible probe tip is flexible enough to deform around the film cooling hole such that an accur... | 04/22/2008 |
| 7359804 | System and method for calibrating remote emissions sensing instruments A system and method is provided for obtaining calibration curves for CO and CO2 during laboratory calibration of one or more remote emissions sensing (RES) instruments, and for self-calibration of on-road RES instruments to compensate for changes in backg... | 04/15/2008 |
| 7275007 | Method for zero correction of a measuring device Method for zero correction of a measuring device, in particular a flowmeter, wherein a number of zero settings are carried out with the device and/or process in different states. In the case of each of these zero settings, a set of device and/or system parameters is... | 09/25/2007 |
| 7273517 | Non-planar microfabricated gas chromatography column A non-planar microfabricated gas chromatography column comprises a planar substrate having a plurality of through holes, a top lid and a bottom lid bonded to opposite surfaces of the planar substrate, and inlet and outlet ports for injection of a sample gas and elut... | 09/25/2007 |
| 7270020 | Instrument assemblies and analysis methods The disclosure relates to instrument assemblies that can include a sample introduction port coupled to a chamber configured to receive the sample from the sample introduction port and provide analysis of the sample with a valve between the sample introduction port a... | 09/18/2007 |
| 7258132 | Electronically controlled back pressure regulator An electronically controlled back pressure regulator comprises an analysis device having a vent coupled to the analysis device through a vent path, a pressure sensor coupled to the vent path, a proportional valve coupled to the vent path, the proportional valve conf... | 08/21/2007 |
| 7257987 | Method and apparatus for sample analysis Methods and systems for analyzing samples, such as gas samples, are described. One method comprises providing a gas sample, increasing pressure applied to the gas sample to compress the sample to a smaller volume and provide a pneumatically focused gas sample, and a... | 08/21/2007 |
| 7225079 | System and method for automated matched ion polynucleotide chromatography In an extensive Matched Ion Polynucleotide Chromatography (MIPC) system and method, and the computer programs or software associated therewith, the system provides automated options for sample selection, mobile phase gradient selection and control, column and mobile... | 05/29/2007 |
| 7147695 | Microfabricated microconcentrator for sensors and gas chromatography Devices for enhancing the sensitivity of a microsensor or any other micro device by providing on-line preconcentration. Microconcentrators that can be integrated with a sensor or a micromachined GC to enhance the signal to noise ratio can include a miniaturized sorb... | 12/12/2006 |
| 7140231 | Evolved gas analyzing method and apparatus An evolved gas analysis system contains a first measurement step of heating a first sample containing measurement target material and non-measurement target material at a predetermined temperature programming rate and detecting the amount of gas evolved from the fir... | 11/28/2006 |
| 7105133 | Fluid sampling apparatus and fluid analyzer having the same A fluid sampling apparatus and associated fluid analyzer sample process fluids used in semiconductor manufacturing at a plurality of measurement points. The fluid sampling apparatus includes a first nozzle assembly having a plurality of outlet nozzles. The plurality... | 09/12/2006 |
| 7092077 | System and method for monitoring contamination The present invention provides passive sampling systems and methods for monitoring contaminants in a semiconductor processing system. In one embodiment, that passive sampling system comprises a collection device in fluid communication with a sample line that provide... | 08/15/2006 |
| 7059112 | Degradation detection method for an engine having a NOx sensor An engine diagnostic system for use with an internal combustion engine coupled to a lean NOx trap with a NOx sensor coupled downstream of the trap. Degradation of the NOx sensor is determined by estimated NOx exiting the trap based on engine out NOx and various othe... | 06/13/2006 |
| 6968729 | Method and apparatus for expediting analysis of samples The present invention comprises a method for expediting the analysis of a plurality of samples, preferably using gas chromatography. A specific embodiment comprises a dual isothermal heated zone configuration for use in combinatorial chemistry. This involves partiti... | 11/29/2005 |
| 6966212 | Focusing device based on bonded plate structures The invention provides a low mass and size thermal focusing device for a gas phase analytical device. The device has two or more plates bonded together. The device also has at least one channel with an entrance and exit is formed within allowing ingress and egress o... | 11/22/2005 |
| 6964735 | Method for moving charged particles Devices and methods are disclosed for moving charged molecules through a medium by the application of a plurality of electrical fields of sufficient strength and applied for sufficient amounts of time so as to move the charged molecules through the medium. The devic... | 11/15/2005 |
| 6883365 | Focusing device for volatile and semivolatile organic compounds in the gaseous phase A focusing device for volatile and semi-volatile organic compounds in the gaseous phase, comprising a support structure, a container for said organic compounds, a cooling element and a heating element for their transfer to the analysis system, characterized in that ... | 04/26/2005 |
| 6856917 | Data processing apparatus for chromatograph A method of properly correcting a base line. A concept of flexibility of a base line is introduced as an input index and a gravitation is presumed between the base line and signal data which is measured, thereby constructing a method of correcting the base line whic... | 02/15/2005 |
| 6781384 | Enhancing the stability of electrical discharges An electronic circuit and a method of generating an electrical discharge for an ionization detector system. The electronic circuit includes a transformer with a primary portion and a secondary portion. The circuit and method produce an electrical discharge across a ... | 08/24/2004 |
| 6673644 | Porous gas sensors and method of preparation thereof A sensor is disclosed. A representative sensor includes a silicon substrate having a porous silicon region. A portion of the porous silicon region has a front contact is disposed thereon. The contact resistance between the porous silicon region and the fr... | 01/06/2004 |
| 6675107 | Data processing apparatus for chromatograph A method of properly correcting a base line. A concept of flexibility of a base line is introduced as an input index and a gravitation is presumed between the base line and signal data which is measured, thereby constructing a method of correcting the bas... | 01/06/2004 |
| 6573492 | Mass spectrometric analysis method and apparatus using the method In a spectrometric analysis method and an apparatus implementing the method, a data base storing spectral data sets of respective standard substances, which are obtained by analyzing these standard substances in advance, each spectral data set including a... | 06/03/2003 |
| 6529836 | Data processing apparatus for chromatograph A method of properly correcting a base line. A concept of flexibility of a base line is introduced as an input index and a gravitation is presumed between the base line and signal data which is measured, thereby constructing a method of correcting the bas... | 03/04/2003 |
| 6497136 | Trace-level gas analysis apparatus and method A trace-level gas analysis apparatus having a diffusion scrubber 11 that captures atmospheric gas components and a sampling tube 10 that guides air into the diffusion scrubber 11 is provided with the cleaning means 2 for cleaning the diffusion scrubber 11... | 12/24/2002 |
| 6494078 | Retention-time locked comprehensive multidimensional gas chromatography A method applies retention-time locking to the retention times and/or the column(s) void times of a target analyte(s) being eluted thru a multidimensional gas chromatography system. Retention time locking is applied to both standard and comprehensive mult... | 12/17/2002 |
| 6386014 | Energy measurement device for flowing gas using microminiature gas chromatograph A system for determining the energy and volume delivered by a flowing natural gas carried within a pipeline based on BTU content analysis of the natural gas using a micro-miniature gas chromatograph. By monitoring key parameters of the flowing natural gas... | 05/14/2002 |
| 6357277 | Method and equipment for the realignment of peaks in gas chromatographic analyses The invention concerns a method for the realignment of peaks in gas chromatographic analyses after the replacement of the used capillary column with a nominally equal one, wherein a K coefficient characteristic of the column is preventively calculated by ... | 03/19/2002 |
| 6338824 | Method for detection of extremely low concentration An ultratrace detector system for hand-held gas chromatography having high sensitivity, for example, to emissions generated during production of weapons, biological compounds, drugs, etc. The detector system is insensitive to water, air, helium, argon, ox... | 01/15/2002 |
| 6314374 | Data processing apparatus for chromatograph A method of properly correcting a base line. A concept of flexibility of a base line is introduced as an input index and a gravitation is presumed between the base line and signal data which is measured, thereby constructing a method of correcting the bas... | 11/06/2001 |
| 6257047 | Method and apparatus for the introduction of large volume samples in capillary columns for gas chromatography The invention concerns a method and an apparatus for the direct injection of large volumes (>3 μl) of samples into the column in a gas chromatography analysis apparatus comprising an oven, a gas chromatography column lodged in the oven, a means for the d... | 07/10/2001 |
| 6225132 | Enhanced chromatography using multiphoton detection A method for detecting an analyte of interest present in a mixture at an ultralow concentration includes selecting a radioactive derivatizing agent comprising a multiphoton-emitting radioisotope moiety and a moiety reactive with the analyte of interest, t... | 05/01/2001 |
| 6210465 | Method for identification of components within a known sample A method for identifying components within a known type of sample through pattern recognition between an array of recognition coefficients generated from the attributes and stable relationships of a plurality of peaks within a chromatogram of a sample to ... | 04/03/2001 |
| 6076047 | Data processing apparatus for chromatograph A method of properly correcting a base line. A concept of flexibility of a base line is introduced as an input index and a gravitation is presumed between the base line and signal data which is measured, thereby constructing a method of correcting the bas... | 06/13/2000 |
| 5987959 | Automated retention time locking The invention provides a method for automated matching of retention times obtained using a known chromatographic method having a defined set of column parameters and operating parameters to the retention times obtained using a new chromatographic method h... | 11/23/1999 |
| 5969228 | Method and devices for chromatographic pattern analysis employing chromatographic variability characterization Method and devices for performing chromatographic pattern analysis determine chromatographic variability due to a plurality of sources without requiring identification or characterization of peaks or other chromatographic features, receives data indicativ... | 10/19/1999 |
| 5841022 | Gas analyzer and gas analysis method The present invention provides a gas analyzer used for contamination control of a clean environment by collecting samples from a plurality of measurement points while switching these points and continuously monitoring the volatile components present in th... | 11/24/1998 |
| 5792943 | Planar separation column for use in sample analysis system A planar separation column device for use in gas or liquid phase sample analysis. The planar separation column device includes complementary microstructures formed in a planar foldable substrate. The complementary microstructures may be superimposed in a ... | 08/11/1998 |
| 5670379 | Chromatograph system and method of use A chromatograph system with improved automation is provided. In the chromatograph system of one embodiment, a regression line is set between retention times of predetermined peaks measured at each run in the past for a standard sample having known compone... | 09/23/1997 |
