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| Number | Title | Issue Date |
| 8084003 | Ozone detecting device A vessel (102) containing a detector solution (101) is prepared. The detector solution (101) is an aqueous solution prepared by dissolving a detector component containing a dye which changes its color when reacting with ozone gas, a humectant, a... | 12/27/2011 |
| 8003055 | Visual hydrogen detector with variable reversibility Methods, processes and compositions are provided for a visual or chemochromic hydrogen-detector with variable or tunable reversible color change. The working temperature range for the hydrogen detector is from minus 100° C. to plus 500° C. A hydrogen-sensitive pig... | 08/23/2011 |
| 7976781 | Ozone detecting device An aqueous solution is formed by dissolving a dye made of alizarin and a humectant made of glycerin, and alkalized by dissolving a base (alkaline substance), thereby preparing a detector solution (101) in which the content of the humectant is about 20 wt %. A... | 07/12/2011 |
| 7883668 | Optical blood gas sensor for real time measurement An optical gas concentration sensor and method for measuring blood gas based on the light adsorption sensing technique are disclosed. The optical gas concentration sensor comprises a light source, a photo detector, and a gas filtering membrane for separating the ind... | 02/08/2011 |
| 7425453 | Integrated circuit porphyrin-based optical Fabry-Perot chemical sensor A Fabry-Perot cavity has a pair of partially transmissive, partially reflective, surfaces. A first of the surfaces is flexibly suspended adjacent and parallel to a second of the surfaces. A gap exists between the surfaces. A variable electrostatic potential permits ... | 09/16/2008 |
| 7390462 | Ratiometric fluorescent pH sensor for non-invasive monitoring The present invention provides ratiometric fluorescent pH sensors for non-invasive, continuous monitoring of pH in such applications as fermentation processes. The ratiometric fluorescent pH sensors comprise a fluorescent dye that exhibits a shift in excitation wave... | 06/24/2008 |
| 7368289 | Filter for determination of mercury in exhaust gases An apparatus, process, coating, and filter for the accurate measurement of total mercury concentration in flue gas. In a preferred aspect, the concentrations of both elemental and oxidized mercury are preserved by the apparatus for analysis. Accordingly, embodiments... | 05/06/2008 |
| 7364700 | Ozone gas sensing element, detection apparatus, and measurement method A sensing element in which a dye that changes in the light absorption characteristic of the visible region upon reaction with ozone gas is deposited in the pores of a porous material is prepared. A change in dye before and after exposing the sensing element to a mea... | 04/29/2008 |
| 7332013 | Compressed air/gas-driven tool with integrated dryness indicator An air/gas-driven tool with an integrated air/gas dryness indicator. The tool includes a housing that defines a cavity. An air/gas dryness detector is disposed in the cavity. An air/gas flow passage is situated to provide a stream of compressed air/gas to the drynes... | 02/19/2008 |
| 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 |
| 7285243 | Quantitative determination of atmospheric hydroperoxyl radical A method for the quantitative determination of atmospheric hydroperoxyl radical comprising: (a) contacting a liquid phase atmospheric sample with a chemiluminescent compound which luminesces on contact with hydroperoxyl radical; (b) determining luminescence intensit... | 10/23/2007 |
| 7285246 | Hand-held fluid analyzer A hand-held device detects the presence of a preselected substance in the breath. A deformable housing forms a test chamber for interacting an indicator reagent with the breath. An ampoule positioned inside the housing is ruptured by manual pressure through the wall... | 10/23/2007 |
| 7261692 | Skin permeable gas collector and skin permeable gas measuring apparatus An apparatus for measuring skin permeable gas, which can be used to obtain clinical information by noninvasive and bloodless operations and is useful for in-home medical care and health management. The apparatus includes a device for collecting skin permeable gas in... | 08/28/2007 |
| 7253002 | Fluid storage and dispensing vessels having colorimetrically verifiable leak-tightness, and method of making same A chemical storage and dispensing vessel having associated therewith a colorimetric member that is effective to change color in exposure to leakage of a gas contained in the vessel. The colorimetric member may be constituted by a film, e.g., of a shrink-wrap charact... | 08/07/2007 |
| 7246627 | Monitoring of cleaning process An apparatus for monitoring a cleaning process for a medical device includes a cleaning chamber for receiving and cleaning the instrument with a cleaning liquid, a receiving well within the cleaning chamber, a removable soil standard receivable within the receiving ... | 07/24/2007 |
| 7220387 | Disposable sensor for use in measuring an analyte in a gaseous sample The present invention is a disposable sensor for use with a device that quantifies analytes in a gaseous sample. It comprises (i) a sensing element, (ii) a means for interfacing the disposable sensor with a gas analysis device, and (iii) a housing. When used with a ... | 05/22/2007 |
| 7214345 | Apparatus for analyzing reduced inorganic sulphur An apparatus for measuring the reduced inorganic sulfur content of a sample. The apparatus has a reaction chamber (12) and means (14) for introducing a reducing agent that can selectively convert the reduced inorganic sulfur of a sample in the reaction... | 05/08/2007 |
| 7201877 | Device and method for detecting sulfuryl fluoride A device for detecting sulfuryl fluoride, in which the gas specimen to be examined is subjected to pyrolysis with ensuing detection of a pyrolysis product, is to be improved for the sake of achieving a mobile, economical structure. To attain this object, in a prelim... | 04/10/2007 |
| 7192554 | Hydrogen peroxide and peracetic acid indicators and methods The present invention provides a hydrogen peroxide indicator and a peracetic acid indicator that include a substrate on which is disposed an indicator composition that includes at least one of a select group of colorants and a transition metal salt. As a result of e... | 03/20/2007 |
| 7188538 | Hazardous material detector for detecting hazardous material in a mailstream The invention disclosed herein relates generally to mailpieces and more particularly, a hazardous material detector for detecting hazardous material in a mail stream. The present invention is directed, in general to detector for collecting sample (s) of hazardous ma... | 03/13/2007 |
| 7186373 | Visual detector for vaporized hydrogen peroxide A method and apparatus for sensing the concentration of a gaseous sterilant in a sealable enclosure. An indicator is provided that has a chemistry such that the indicator changes color when exposed to vaporized hydrogen peroxide (VHP). The chemistry is adapted to re... | 03/06/2007 |
| 7186565 | Sampling and toxicity monitoring device and method A method and apparatus for testing an aqueous or gaseous environment for the presence of at least one chemical is provided in order to determine the toxicity of the chemical and optionally, the quantity and identity of the chemical. ... | 03/06/2007 |
| 7161677 | Condensation sensor and method of controlling condensate film in sealed space with condensation sensor A condensation sensor detects whether hydrogen peroxide gas has condensed in a sealed space and determines the condition of a condensate film upon passage of time. The condensate film in the sealed space is controlled with the condensation sensor. The condensation s... | 01/09/2007 |
| 7153532 | Sensing gaseous substances using metal complexes A metal co-ordinated complex in a medium, e.g. a palladium-fluorophore, may be used to detect food spoilage products by the release of a detectable component by preferential binding of the metal to, for example, sulphur compounds or amines. It can be easy to detect ... | 12/26/2006 |
| 7141214 | Ethylene oxide sterilization process indicator inks Water-based chemical indicator inks for ethylene oxide sterilization processes and methods for its use. The chemical indicator ink contains at least one pH indicator dye selected from the group consisting of Bromocresol green, Bromophenol blue, Methyl red, Ethyl ora... | 11/28/2006 |
| 7118711 | Microcolumn reactor The invention relates to a microcolumn reactor for carrying out reactions on solid phases and/or with biological cells. The aim of the invention is to provide a microcolumn reactor for processes of synthesis and separation on small sample volumina that replaces an a... | 10/10/2006 |
| 7116421 | Device and method for differential sensing of hydrogen gas using thermoabsorptance or thermoreflectance A hydrogen sensor, useful for trace hydrogen gas detection. The sensor involves providing a gas sample, generating modulated optical excitation sources, bringing the optical excitation source to the side of a metalized thin pyroelectric film, and detecting via a loc... | 10/03/2006 |
| 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 |
| 7107928 | Selectively deformable container end closure The present invention describes a container end closure which utilizes a material that is adapted to provide a visible indicator when the internal pressure of the contents increase to a predetermined level. In one embodiment, an interruption in a reinforcing bead in... | 09/19/2006 |
| 7087434 | Automatic portable formaldehyde analyzer An apparatus for measuring the concentration of formaldehyde in an exhaust stream from turbines, internal combustion engines and the like, which apparatus includes a portable housing having a sample gas inlet through which a sample gas for analysis is introduced int... | 08/08/2006 |
| 7055401 | Closed method and system for the sampling and testing of fluid A closed fluidic sampling system. The system includes a first port for receiving a sample of fluid and a sampling chamber in fluid communication with the first port. A a one-way valve allows fluid to flow from the first port towards the sampling chamber while preven... | 06/06/2006 |
| 7022285 | Integral-multilayer analytical element for analysis of ammonia or ammonia-producing substance An integral multilayer analytical element for analysis of ammonia or ammonia-producing substance is provided, which comprises a thin liquid blocking layer having a comparative facility with a thicker liquid blocking layer and is stably fabricated on a common product... | 04/04/2006 |
| 7014816 | Food quality indicator device A food quality indicator device an indicator compound provided on a substrate. The indicator compound changes color due to the presence of volatile compounds, such as volatile bases, in spoiled food, even when the food is frozen. Alternatively, the indicator compoun... | 03/21/2006 |
| 6962154 | Metered administration of a therapeutic gas The invention relates to a method for the metered administration of a therapeutically effective gas to a patient, comprising a step to remove harmful or undesired substances from the gas-carrying system or from parts of the gas-carrying system. According to the inve... | 11/08/2005 |
| 6948882 | Sensor system for buried waste containment sites A sensor system for a buried waste containment site having a bottom wall barrier and/or sidewall barriers, for containing hazardous waste. The sensor system includes one or more sensor devices disposed in one or more of the barriers for detecting a physical paramete... | 09/27/2005 |
| 6905638 | Vegetable oil based dielectric fluid and methods of using same In one aspect, the present invention provides a dielectric fluid for use in electrical equipment comprising a vegetable oil or vegetable oil blend. In another aspect the invention provides devices for generating and distributing electrical energy that incorporate a ... | 06/14/2005 |
| 6858182 | Exhalation gaseous component gauge and a cellular phone equipped with function of measuring gaseous components Disclosed is an exhalation gaseous component gauge including, in a palm-sized casing having exhalation taking-in and taking-out slots made on its front and rear sides, a semiconductor gas sensor so placed that the air flowing from one's mouth may pass the sensor, a ... | 02/22/2005 |
| 6830728 | Device and method for pneumatic gas sampling for gas sensors Apparatus and method for detecting presence of an analyte in ambient air. The apparatus comprising a valve for admitting ambient air, a line for conveying the air to a sensing element, a housing for isolating the environment around the sensing element, an inlet port... | 12/14/2004 |
| 6825040 | Method of using a vapor acid test kit An acid test kit uses an indicator paper in a transparent tube which is easily and temporarily inserted in a Schrader-valve at a compressor suction inlet of a refrigeration system. The simplicity, yet sufficient accuracy, of the kit permits several different ways of... | 11/30/2004 |
| 6819252 | Carbon monoxide and smoke detection apparatus A smoke sensor and a carbon monoxide sensor are integrated into a common detector housing. The smoke sensor is coupled to a smoke detector control integrated circuit which generates a binary output signal indicative of the presence of smoke. This signal is coupled t... | 11/16/2004 |
