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| Number | Title | Issue Date |
| 7422723 | Alcohol breath test device A breath alcohol detection device includes a one-piece multi-passage block with attached sensors, a valve and a fuel cell. The cell accurately determines the BrAC of a prospective vehicle operator. In the event the BrAC is less than the legal maximum for a territory... | 09/09/2008 |
| 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 |
| 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 |
| 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 |
| 7157052 | Linear chemoselective carbosilane polymers and methods for use in analytical and purification applications This invention relates generally to a new class of chemoselective polymer materials. In particular, the invention relates to linear polycarbosilane compounds for use in various analytical applications involving sorbent polymer materials, including chromatoghraphy, c... | 01/02/2007 |
| 7112447 | Hand held gas analyzer A lightweight and portable analyzer is provided. At least one component of the analyzer is made from a lightweight material, such as ABS. A manifold can have a plate and gas passages ultrasonically welded together. By having at least one component made from a lightw... | 09/26/2006 |
| 7089134 | Method and apparatus for analyzing gas flow in a gas panel One embodiment of the present invention is a method for analyzing gas flow in a gas transmission unit of a gas panel that includes: (a) monitoring a measure of gas flow output from a mass flow controller included in the gas transmission unit; (b) monitoring a measur... | 08/08/2006 |
| 6682934 | Automated airborne metal analyzer A portable instrument for automatic collection and analysis of airborne lead concentrations in ambient air environments. Its improvements to the art of airborne lead detection and analysis permit the apparatus to analyze samples previously collected by pe... | 01/27/2004 |
| 6682699 | Reduced power consumption gas chromatograph system This invention provides a reduced power consumption gas chromatograph system (10) which includes a capillary gas chromatograph column member (12) which contains a chemical sample to be analyzed. The gas chromatograph system further includes a heating mech... | 01/27/2004 |
| 6660230 | Linear chemoselective carbosilane polymers and methods for use in analytical and purification applications This invention relates generally to a new class of chemoselective polymer materials. In particular, the invention relates to linear polycarbosilane compounds for use in various analytical applications involving sorbent polymer materials, including chromat... | 12/09/2003 |
| 6632404 | Automatically actuated parallel sample injector valve A sample injector valve capable of introducing multiple samples of material into multiple liquid or gas streams is provided. Such a valve is particularly useful for injecting multiple samples under pressure into a combinatorial chemistry system with movin... | 10/14/2003 |
| 6589480 | Method for sanitizing a food processing environment A method for sanitizing a food processing environment includes the preparation of an aqueous ozone was solution for use in sanitizing food contact surfaces and food processing work stations. During preparation of an ozone wash solution, ozone off-gas is c... | 07/08/2003 |
| 6582663 | Apparatus for titration and circulation of gases and circulation of an absorbent or adsorbent substance The invention concerns an apparatus for the titration and circulation of gases to determine metal hydride storing properties, with improved response time, greater dynamic range in terms of the usable amount of powder and the maximum pressure accessible an... | 06/24/2003 |
| 6488893 | Polyamide substrate having stain resistance, composition and method A combination of a semi-soluble methacrylic polymer and a sulfonated naphthalene condensation product, optionally with a semi-soluble or insoluble ethyl methacrylate polymer of high molecular weight, provides improved resistance to staining by acid colora... | 12/03/2002 |
| 6442998 | Gas concentration measuring apparatus compensating for error component of output signal A gas concentration measuring apparatus is provided which measures the concentration of two kinds of gas components such as O2 and NOx contained in exhaust gasses of an internal combustion engine of automotive vehicles. The apparatus has a gas ... | 09/03/2002 |
| 6217829 | Reduced power consumption gas chromatograph system This invention provides a reduced power consumption gas chromatograph system (10) which includes a capillary gas chromatograph column member (12) which contains a chemical sample to be analyzed. The gas chromatograph system further includes a heating mech... | 04/17/2001 |
| 6125688 | Method of determining pulp properties The present invention is related to a method of determining the amount of gas in a liquid. The method is particularly well suited for determining the amount of both the gas in the form of bubbles and the gas dissolved in pulp, i.e. in various fiber suspen... | 10/03/2000 |
| 5783747 | Fluid analyzing detector for detecting the presence of a particular analyte in a fluid medium A rigid cylinder is provided with small perforations to permit the entry of hydrocarbon containing liquids, gases or vapors, and the interior of the cylinder is lined with a sensor material which expands in the presence of hydrocarbons. The interior chamb... | 07/21/1998 |
| 5342580 | Apparatus and method for measuring the amount of gas adsorbed on or desorbed from a solid and reactions of a gas with a solid An apparatus and method for measuring an amount of gas adsorbed on or desorbed from a solid and for analyzing and surveying reactions of a gas with a solid. Governing parameters include pressure, temperature and gas flow rate. The apparatus and method pro... | 08/30/1994 |
| 5173263 | Regenerable activated bauxite adsorbent alkali monitor probe A regenerable activated bauxite adsorber alkali monitor probe for field applications to provide reliable measurement of alkali-vapor concentration in combustion gas with special emphasis on pressurized fluidized-bed combustion (PFBC) off-gas. More particu... | 12/22/1992 |
| 4758408 | Automatic oxygen measuring system An automatic oxygen absorption measuring system has a controllable source of pressurized oxygen, a controllable venting device, and a device for indicating incremental gas volume changes connected through a controlled gas reservoir to an oxygen circulatin... | 07/19/1988 |
| 4624834 | Device for measuring the absolute value of the density of salts in atmosphere A device for measuring the absolute value of the density of salts in the atmosphere including: an airtight water tank containing super pure water, a device for supplying super pure water to the airtight water tank, an elongated cylindrical pipe for bubbli... | 11/25/1986 |
| 4521377 | Flow through gas analyzer A flow through fluid analyzer and method of analysis which comprises providing a transparent analyzer tube having an open ended outer reservoir, a capillary tube connected at one end to the inner end of the outer reservoir and at its opposite end to the i... | 06/04/1985 |
| 4483824 | Method and apparatus for long-term monitoring of pollutants and moisture in a fluid stream Long-term monitoring of pollutants or moisture in a fluid stream, such as an air stream, is achieved by electrically measuring (and optionally recording) pressure changes caused by a reaction between a pollutant or moisture in the stream and a chemical ca... | 11/20/1984 |
| 4372748 | Method of determining vehicle misfueling A method of determining if an internal combustion engine has been operated on a leaded fuel. The method has the following general steps. A misfueling detector is formed from a material which is capable of interacting with lead when exhaust gases containin... | 02/08/1983 |
