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| Number | Title | Issue Date |
| 7950270 | Method and device for detecting volatile analytes in air samples The invention relates to a method and a device (16) for detecting volatile analytes in air samples, where a masssensitive sensor (20) with at least one sensor area (21) which is equipped with a surface layer with selective sensitivity for the an... | 05/31/2011 |
| 7942033 | Systems for the detection of trace vapors and particles in air A detector for the detection for trace vapors and particles in the air that includes a housing; a well formed in the housing; a heated filter positioned across the well; a source delivering sampled air substantially perpendicular to the open end of the well on a fir... | 05/17/2011 |
| 7874198 | Methods and systems for analysis, reporting and display of environmental data An environmental monitoring system and methods of a site are disclosed. The system includes one or more environmental measurement instruments, of which at least one instrument is capable to measure a concentration of particles in a certain size range. The system may... | 01/25/2011 |
| 7743643 | Innovative gas monitoring with spacial and temporal analysis The present invention relates to the monitoring of gas concentrations possible in very low ranges (i.e., low ppb and even ppt ranges) and especially use thereof in environmental monitoring, exposure assessment, bomb detection, and health studies. The invention can u... | 06/29/2010 |
| 7669457 | Apparatus and method of smoke detection An aspirated smoke detector includes an ambient air flow separation element in combination with a smoke sensing chamber. The flow separation element can be an active or a passive element. Separated ambient, carrying relative small particles can flow into the sensing... | 03/02/2010 |
| 7408473 | Method of COHb calculation in a carbon monoxide detector A gas detector and method of operating the gas detector that includes a carbon monoxide sensor and a processor. The carbon monoxide sensor senses an environmental concentration of carbon monoxide and provides the sensed value to the processor. Upon receiving the val... | 08/05/2008 |
| 7314597 | Chemical agent detection A chemical agent detector with a lesser demand sensor, a greater demand sensor, an inlet; and a manifold; and methods associated therewith. The manifold is positioned between the inlet and the sensors, and includes a first intake associated with the lesser demand se... | 01/01/2008 |
| 7310992 | Device for continuous real-time monitoring of ambient air The present invention provides a device for continuous real-time monitoring of ambient air. The device includes a receptacle, a liquid supply, and a pressure balancing system. The receptacle includes a gas inlet slit located such that the gas inlet slit is covered b... | 12/25/2007 |
| 7302829 | Contactless humidity/chemical vapor sensor device and associated method of fabrication The invention provides a contactless sensor device operable for sensing water vapor or a predetermined chemical vapor including a thin film, wherein the thin film includes a nanostructured sensing layer and a soft magnetic layer disposed directly adjacent to the nan... | 12/04/2007 |
| 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 |
| 7249490 | Isolated gas sensor configuration A gas sensor assembly detects a constituent in a gaseous stream. The assembly comprises: (a) a mounting surface, (b) a sensor mounted on the mounting surface and sensor capable of generating a detectable signal in the presence of the constituent, and (c) an enclosin... | 07/31/2007 |
| 7232511 | Multi-gas/vapor electrochemical sensor for the detection and monitoring of chemical and biological agents A silicon substrate device is formed to include circuitry for testing for various agents of interest. The novel solid state miniaturized microprocessor based electro-chemical sensor device includes a substrate with a plurality of electrodes formed thereon for sensin... | 06/19/2007 |
| 7230819 | Mobile power system A mobile power system for producing power at a desired location includes a first power generating device of a first type coupled to a transportable housing, and a second power generating device of a second type coupled to the transportable housing. The first type of... | 06/12/2007 |
| 7215840 | Thermally-controlled fiber optic tuning and isolating device A tunable fiber optic component providing environmental isolation, thermal tuning, and mechanical tuning and a method of tuning a fiber optic component using application of substantially simultaneous varying of temperature and mechanical strain is disclosed. A metho... | 05/08/2007 |
| 7208123 | Molecular contamination monitoring system and method A flow-through monitor for detecting molecular contamination (MC) within a fluid flow. The monitor has a diffusion chamber having an inlet port and an outlet port, and a structure for supporting a fluid flow from the inlet port to the outlet port. The structure incl... | 04/24/2007 |
| 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 |
| 7201034 | Gas concentration measurement instrument and gas concentration measurement method A gas concentration measurement instrument comprises: ultrasonic wave transmitting means for transmitting an ultrasonic wave according to an ultrasonic wave generation signal composed of a group of rectangular pulse waves; ultrasonic wave receiving means for convert... | 04/10/2007 |
| 7196875 | Permalloy sensor having individual permalloy resist pattern runners with lengths perpendicular to a wafer level anisotropy A permalloy sensor having high sensitivity is presented A substrate and a sensor has a first surface having a wafer level anisotropy in a given direction. A permalloy resistor pattern of individual runners is deposited on the surface such that the mechanical length ... | 03/27/2007 |
| 7191645 | Dynamic mixed gas flowmeter A compensated flowmeter having a probe adapted to project into flowing media within a conduit. The probe includes a thermal dispersion sensor, and a compensating gas properties sensor contained within a no-flow chamber of the probe. The thermal flow sensor has activ... | 03/20/2007 |
| 7188513 | Detecting concealed security threats Systems, methods and apparatus for detecting concealed security threats by sampling molecules of substances for assessment wherein these molecules may be contained in the air in or near concealed security threats. Inspection of cargo containers by sampling the air c... | 03/13/2007 |
| 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 |
| 7168293 | Systems and methods for residue collection with improved letter handling capability Systems and methods for the detection of substances (particularly particulate substances) within mail pieces, specifically letters and other “flats” of mail. In particular, the systems and methods are for the detection of residues of Chemical or Biological Warfa... | 01/30/2007 |
| 7114369 | Systems and methods for residue collection Systems and methods for the detection of substances (particularly particulate substances) within mail pieces, specifically letters and other “flats” of mail. In particular, the systems and methods are for the detection of residues of Chemical or Biological Warfa... | 10/03/2006 |
| 7080544 | Apparatus system and method for gas well site monitoring A System and a Method of initializing and using that system are described in various embodiments all suitable for use remotely monitoring gas escapes on oil or gas well-sites, particularly as early warning technologies for use in preventing injury to workers or popu... | 07/25/2006 |
| 7055369 | Gas detector having clog-resistant intake filter and protective cap A gas detector having an intake to let in the gas to be detected and detecting the gas let in through the intake by a gas sensor, in which a porous film is horizontally arranged over the gas intake, in order to prevent the gas permeability of the porous film from be... | 06/06/2006 |
| 7028530 | Gas detector There is provided a gas detector capable of detecting hydrogen concentration and humidity independently in the environment containing both hydrogen and water vapor. The gas detector comprises a high-temp exothermic detector unit and a low-temp exothermic detector un... | 04/18/2006 |
| 7017389 | Sensors including metal oxides selective for specific gases and methods for preparing same Sensors are provided which are selective for a specific gas. The sensors include a substrate, electrodes, and a thin film metal oxide. Methods for choosing the metal oxide to be utilized in the sensor with selectivity for the specific gas are also provided, as are m... | 03/28/2006 |
| 6958234 | Automatic microbial air sampling system and method A method and system for automated remote microbial air sampling includes a sampling enclosure positioned outside an isolator. An infeed sample receiver passes sample containers into the enclosure. An atrium is located within the enclosure and exposes containers to a... | 10/25/2005 |
| 6938459 | Method for detecting moisture level in apparatus for treating and preparing food and related food treatment and preparation apparatus The present invention refers to a method of detecting the moisture in an apparatus for treating and preparing food, as well as to a method of treating and preparing food. In the method according to the invention, the current temperature values and speed values of th... | 09/06/2005 |
| 6935158 | MIS hydrogen sensors Hydrogen gas sensors employ an epitaxial layer of the thermodynamically stable form of aluminum nitride (AlN) as the “insulator” in an MIS structure having a thin metal gate electrode suitable for catalytic dissociate of hydrogen, such as palladium, on a semicon... | 08/30/2005 |
| 6931913 | Chemical agent detector A chemical agent detector utilizing surface acoustic wave (SAW) sensors for detecting the presence of a multitude of chemical agents by sampling ambient air is provided. A pressure-differential manifold having an air intake port, an exhaust port, a valve and a pump ... | 08/23/2005 |
| 6930586 | Carbon monoxide detector A carbon monoxide (CO) detection unit incorporates a sensor which is a film or layer of NixCo1-xOy where x is from 0.1 to 0.9, e.g., spinel. The CO is detected by measuring the change in the electrical properties of the sensor. The d... | 08/16/2005 |
| 6928858 | Apparatus and method for thermal conductivity detection in gas chomatography equipment A thermal conductivity detector includes separate sample gas and reference gas chambers. Each chamber has a gas inlet and a gas outlet and a sensor. The chambers are connected by at least one passageway. For example, a passageway can extend from the sample gas chamb... | 08/16/2005 |
| 6925422 | System and method for monitoring the performance of an indoor air environment product installation A system and method provide the ability to establish, record, track, and report on all phases of product utilization and performance from the design phase to end use performance and validation in a real time environment. The present invention enables an organization... | 08/02/2005 |
| 6895801 | 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... | 05/24/2005 |
| 6853924 | Diffusion status prediction method and diffusion status prediction system for diffused substance A diffusion status prediction method and system for a diffused substance are disclosed. The diffused substance is replaced by particles, and positions which the particles generated from an emission source arrive at are found by computation. The arrival positions and... | 02/08/2005 |
| 6840085 | Photoionization detector with multiple ionization cells A photoionization detector comprising multiple ionization cells for detecting the presence of chemical compounds in multiple fluid samples. The photoionization detector uses a single source of ultraviolet (UV) radiation to emit high energy photons into at least two ... | 01/11/2005 |
| 6823727 | DEVICE HAVING A SENSOR ARRANGEMENT FOR DETERMINING THE AMBIENT-AIR QUALITY AND AN ARRANGEMENT OF OZONE SENSORS UPSTREAM AND DOWNSTREAM OF A RADIATOR WHICH IS COATED WITH A CATALYST MATERIAL, AND METHOD FOR OPERATING A DEVICE OF THIS TYPE Device, in particular for use in a motor vehicle, having a sensor arrangement (21), which controls an air-conditioning unit, for determining the ambient-air quality, and an arrangement of ozone sensors (21, 22) upstream and downstream of a radiator ( | 11/30/2004 |
| 6736001 | Device for the non-contact storage of components A semiconductor gas sensor, for example for measuring CO, NOx, O3, etc., exhibits a heatable sensor element for measuring gas concentrations, and a housing in whose interior the sensor element is disposed. The housing has a first opening, which... | 05/18/2004 |
| 6684629 | Method for checking the conversion capacity of a catalytic element for converting ozone Method for checking the conversion capacity of a catalytic element for converting ozone where the catalytic element is provided as a vehicle radiator with a catalytic coating and the method of checking uses ozone sensors upstream and downstream of the rad... | 02/03/2004 |
