Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 8182768 | Interface assembly for pre-concentrating analytes in chromatography A system for interfacing a sampling device and a chromatograph and for pre-concentrating analytes in a sample prior to introducing the sample into the chromatographic column is generally disclosed comprising an interface housing with a first channel and an adsorbent... | 05/22/2012 |
| 8178047 | Miniature chemical analysis system An apparatus, according to one aspect, may include a chromatograph and a bulk acoustic resonator. The chromatograph may include a channel that is defined at least partially in a monolithic substrate. The channel may have an inlet to receive a sample and an outlet. A... | 05/15/2012 |
| 8062610 | Apparatus and methods for use in concentration of gas and particle-laden gas flows For analysis of small quatities of target analytes in an environment, the gas flow can be delivered to a suitably fast analyzer and their concentration determined in a time period whose duration is dependent on the analyte, its concentration and the phase separation... | 11/22/2011 |
| 8043565 | Analytical instrumentation and processes Gas chromatography apparatuses are provided that can include a housing configured to substantially envelop the column within the compartment. Analytical instruments are provided that can include at least one chromatography column compartment having a volume of the l... | 10/25/2011 |
| 7959865 | Miniaturized gas chromatograph and injector for the same The invention relates to a miniaturized gas chromatograph and injector for the same. Said micro-GC is compact and simple and economical to construct. Dead volumes are largely avoided in order to achieve reliable and reproducible measured results. Said miniaturized g... | 06/14/2011 |
| 7695681 | Miniature chemical analysis system An apparatus, according to one aspect, may include a chromatograph and a bulk acoustic resonator. The chromatograph may include a channel that is defined at least partially in a monolithic substrate. The channel may have an inlet to receive a sample and an outlet. A... | 04/13/2010 |
| 7419831 | Method and apparatus for determination of water and for normal phase liquid chromatography A method for calibrating an analysis instrument, e.g., a gas chromatograph, for water analysis that includes four steps. The first step is to continuously remove water from a liquid that contains water to produce a liquid containing a reduced amount of water such as... | 09/02/2008 |
| 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 |
| 7409850 | Systems and methods for maximizing heat transfer efficiency to and minimizing thermal gradients in an analytic column An improved gas chromatograph system includes a radiant source, an insert located to receive an output of the radiant source, and an analytic column wound on a concave surface of the insert so that successive coils of the wound analytic column are in direct contact ... | 08/12/2008 |
| 7383718 | Single stage flow modulator for performing comprehensive chromatography A single stage flow modulator for performing comprehensive chromatography comprises a first chromatographic column, a valve fluidically coupled to at least two fluid conduits, wherein when in a first position, the valve directs a control flow to direct an output of ... | 06/10/2008 |
| 7377150 | Analyzer An analyzer includes a reforming unit which reforms fuel containing an organic compound which contains carbon and hydrogen into a reformed gas containing hydrogen, a flame ionization detector which is connected to the reforming unit, and detects an ion generated by ... | 05/27/2008 |
| 7374942 | Process and apparatus for the combinatorial production and testing of catalyst material libraries by using at least two analytical methods A process and apparatus for testing material libraries, in particular catalysts, by means of coupled use of at least two analytical methods, preferably IR thermography and mass spectrometry. Owing to the selected arrangement, the disadvantages of the two previously ... | 05/20/2008 |
| 7367216 | Phased micro analyzer V, VI A micro fluid analyzer having a concentrator and two or more separators. The analyzer may have one, two or more pumps. The analyzer may have a hyper pre-concentrator having a number of channels. There are numerous detectors positioned along the flow path of the anal... | 05/06/2008 |
| 7363801 | Gas chromatograph sample injector In a sample injector for a gas chromatograph, the present invention improves the throughput of a GC analysis including the derivation of a target compound and reduces the tedious work of handling a reagent for the derivation. According to the present invention, a de... | 04/29/2008 |
| 7360394 | Multi-purpose modular pyrolysis and thermal processing system for chemical and biological threat agent detection A multi-purpose modular pyrolysis and thermal processing system (MPMPTPS) for pyrolyzing and/or vaporizing liquids and solids to create an evolved vapor suitable for introduction into a gas-chromatography and/or vapor detection system, thereby allowing detection, cl... | 04/22/2008 |
| 7354552 | Gas chromatograph with flame ionisation detector for parallel hydrocarbon analysis A field flame ionisation gas chromatograph for the analysis of a hydrocarbon gas mixture found in particular in mud from oil drilling and sampled by a gas carrier, which is characterised by the fact that it includes a first and a second analysis unit working in para... | 04/08/2008 |
| 7351316 | Water electrolysis method and device for determination of hydrogen and oxygen stable isotopic composition Water electrolysis device determining stable isotopic composition of water and a water electrolysis method for stable isotopic composition of water capable of analyzing many samples easily, safely and at low cost in very short time, and rapidly analyzing 17 | 04/01/2008 |
| 7347080 | Thermal conductivity detector A thermal conductivity detector (TCD) utilizes a modular thermistor assembly that mounts to the TCD body. The thermistor assembly is easily replaceable in the TCD. Within the TCD, a thermistor bead is always held in the same relative location in a gas flow path, whi... | 03/25/2008 |
| 7343779 | High performance, hand-held gas chromatograph, method and system A hand-held, ultra-sensitive gas chromatograph which provides real time detection and analysis of chemical compounds or impurities is disclosed. The detection sensitivity ranges from parts per trillion to parts per million with an average retention time ranging from... | 03/18/2008 |
| 7311757 | Analyte pre-concentrator for gas chromatography An analyte pre-concentrator for gas chromatography is disclosed generally comprising a tube having a restricted outlet and packed with an adsorbent, wherein the tube serves as the liner of a chromatographic injector, as an adsorbent trap coupled to a chromatographic... | 12/25/2007 |
| 7305866 | Mass spectrometry A method of gas chromatograph mass spectrometry with a negative chemical ionization (NCI) process includes analyzing a standard substance for the NCI by deriving with a derivatization reagent a fatty acid with a multiple number of carbon atoms, measuring the standar... | 12/11/2007 |
| 7297549 | Method of determining measurement bias in an emissions monitoring system A method of determining bias in a measurement of a constituent concentration level in a sample gas is provided. The method comprises establishing a sample gas flow from an emission stream into a sample gas line of an emissions monitoring system. The method further c... | 11/20/2007 |
| 7288228 | Sample injection system An HPLC injection valve is mounted to a probe drive system close to the probe axis to minimize probe movements required for sample injections into a mobile phase column. The probe is directly connected by a short conduit to the injection valve, eliminating the need ... | 10/30/2007 |
| 7281408 | Parallel gas chromatograph with microdetector array Gas chromatographs of the invention generally comprise four or more analysis channels. Specifically, four or more gas chromatography columns are configured for parallel analysis of four or more gaseous samples with detection being effected using a microdetector arra... | 10/16/2007 |
| 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 |
| 7269991 | Permeation calibrator An apparatus, method, and system for ensuring a more accurate and precise calibration of gas or liquid analyzers using gas emitting permeation tubes for the production of calibration samples. The permeation devices are placed in a temperature-controlled housing to e... | 09/18/2007 |
| 7269994 | Chromatograph/mass spectrometer The present invention provides a chromatograph/mass spectrometer capable of producing a composite chromatogram from plural chromatogram signals without causing the baseline level to rise or the intensity of the chromatogram peak to decrease. The chromatograph/mass s... | 09/18/2007 |
| 7270716 | Method of selecting contact lens and/or care system therefor It is intended to provide a method of selecting a contact lens suitable for a wearer and/or a care system therefor, by which the occurrence of problems (for example, worsening in the feel during wearing, lowering in the oxygen permeability of the lens, shortening in... | 09/18/2007 |
| 7267709 | Methods and systems for characterizing a sorbent tube Disclosed are systems and methods that include providing a vessel having an adsorbent disposed therein, the vessel having an inlet and an outlet for communicating a carrier gas through the vessel; determining a differential pressure between the inlet and the outlet ... | 09/11/2007 |
| 7267796 | Preparative liquid chromatograph using plural detectors The preparative liquid chromatograph uses a plurality of detectors including a mass spectrometer, and a chromatogram generator is provided for generating a plurality of chromatograms each corresponding to each of the plurality of detectors. The plurality of chromato... | 09/11/2007 |
| 7258726 | Method and apparatus for measuring velocity of chromatographic pulse An Apparatus and method for two-stage chromatographic separation uses thermal modulation. The chromatographic column or modulation tube (1) has a loop structure such that two portions of modulation tube (1) can be thermally modulated simultaneously by ... | 08/21/2007 |
| 7255834 | Method 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 |
| 7240535 | Method and apparatus for gas measurement at substantially constant pressure A system which enables the presentation of alternating gas samples to a gas sensor in a detection zone without substantial change of the sample pressure at the sensor in the zone, whereby pressure variations that can produce unwanted sensor signals are mitigated; al... | 07/10/2007 |
| 7237430 | Method and apparatus for enhanced detection of a specie using a gas chromatograph The invention includes a method and apparatus for a chromatography system having a chromatographic column for separating gases in a mixture from one another and an electrochemical gas sensor coupled to the chromatographic column for detecting a gas being emitted fro... | 07/03/2007 |
| 7235400 | Laminated microarray interface device A device for forming a low volume reaction chamber on a substrate such as a microarray slide and its method of use is disclosed. The reaction chamber forming device has an adhesive laminate design that permits it to be manufactured as a disposable device. A preferre... | 06/26/2007 |
| 7228067 | Chromatography column assembly with woven tubular mesh heater element A direct-heating column assembly for chromatography, includes at least one capillary column and at least one element made of electrically conductive material in contact with the capillary column. The element includes a plurality of filaments woven together to form a... | 06/05/2007 |
| 7223363 | Method and system for microfluidic interfacing to arrays A method and system for providing a fluidic interface to slides bearing microarrays of biomolecules or other samples immobilized thereon to perform a variety of chemical reactions or processing steps on the slide. An interface device seals against the slide to form ... | 05/29/2007 |
| 7204125 | Pressure activated sampling system Screening of items for the presence of contaminants, such as explosives residue, is accomplished by subjecting an item loaded into a pressure chamber to a pressure substantially in excess of atmospheric pressure conditions and rapidly decompressing the item to the a... | 04/17/2007 |
| 7201874 | System for automatically extracting and analyzing residual solvents in material samples A system for quickly and automatically extracting and analysing residual solvents is realised for operating directly in the premises where the packing materials are being manufactured, printed and/or laminated. The system provides for a single unit equipped w... | 04/10/2007 |
| 7172730 | Thermal sensor A thermal sensor has a substrate defining a reaction chamber. The reaction chamber has an inlet for conducting sample into the reaction chamber, a reaction surface and an orifice adjacent the reaction surface defining an outlet from the reaction chamber. The reactio... | 02/06/2007 |
