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| Number | Title | Issue Date |
| 8025844 | Hydrogen sensor and hydrogen gas detecting apparatus A hydrogen sensor includes a thin film layer formed on a top surface of a planar optical transmission medium, and a catalyst layer formed on a top surface of the thin film layer. A first interface is created between the planar optical transmission medium and the thi... | 09/27/2011 |
| 7591980 | Biological alarm Airborne particles are impacted on a collection surface, analyzed, and then the collection surface is regenerated. Thus, the same collection surface can be used in numerous cycles. The analysis can be focused on one or more properties of interest, such as the concen... | 09/22/2009 |
| 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 |
| 7425452 | Pump-and-probe method for estimating strength of forming photochemical ozone and apparatus therefor A method of estimating strength of forming photochemical ozone utilizing a pump and probe technique is disclosed along with an apparatus for estimating strength of forming photochemical ozone utilizing a pump and probe means whereby strength of forming photochemical... | 09/16/2008 |
| 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 |
| 7419636 | Vapor sensing instruments for ultra trace chemical detection A detector for detecting vapors emitted from analytes includes a housing, a pump and a sensing assembly. The housing has an inlet, an outlet and an enclosed sensing volume therebetween. The pump communicates with the housing for moving a carrier sequentially through... | 09/02/2008 |
| 7416703 | Polymer based lanthanide luminescent sensors for the detection of organophosphorus compounds A device for measuring and detecting the organophosphonis compounds, such as a pesticides or a nerve agents is provided. The devices function by selectively binding an organophosphorous compound to a luminescent functionality-imprinted copolymer. The copolymers poss... | 08/26/2008 |
| 7368281 | Label-free evanescent-field detection of biological and chemical agents An evanescent-field sensor system and method of using the system to detect either liquid- or airborne biological pathogens, chemical agents, and other harmful or toxic species is provided. The sensor system involves 1) an evanescent-field sensor having a substrate s... | 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 |
| 7357043 | Chemical trace detection portal based on the natural airflow and heat transfer of vehicles A portal is provided with a detector for detecting trace amounts of substances of interest that may be retained on the surface or interior of a vehicular subject. The portal relies upon the continuous process by which microscopic flakes of dust, dirt, pollen, and ot... | 04/15/2008 |
| 7358476 | Sensing photons from objects in channels A fluidic structure includes a channel and along the channel is a series of sensing components to obtain information about objects traveling within the channel, such as droplets or other objects carried by fluid. At least one sensing component includes a set of cell... | 04/15/2008 |
| 7354553 | Method and apparatus for detecting the presence of elemental mercury in a gas sample An improved elemental mercury analyzer utilizes a fluorescence assembly in combination with a fluorescence quenching reduction mechanism to detect the concentration of elemental mercury within an emission gas sample, via fluorescence of the mercury within the gas sa... | 04/08/2008 |
| 7354727 | Method and apparatus for classifying B-lymphocytes A B-lymphocyte classifying method includes the steps of (1) preparing a measurement sample by mixing a blood sample with a lysing reagent to lyse erythrocytes and to shrink the B-lymphocytes in the blood sample, (2) letting the measurement sample flow through a flow... | 04/08/2008 |
| 7348181 | Self-encoding sensor with microspheres A microsphere-based analytic chemistry system is disclosed in which self-encoding microspheres having distinct characteristic optical response signatures to specific target analytes may be mixed together while the ability is retained to identify the sensor type and ... | 03/25/2008 |
| 7349590 | Polarization modulation interrogation of grating-coupled waveguide sensors An optical interrogation system and a GCW sensor are described herein that are used to determine whether a biological substance (e.g., cell, molecule, protein, drug) is located in a sensing region of the GCW sensor. The optical interrogation system includes a light ... | 03/25/2008 |
| 7333204 | Method and device for analysing a gas likely to contain particles or suspended aerosols The present method uses a spectrophotometric and/or ionisation detection device in which the gas to be analyzed and illuminated by a light source emitting in a range of wavelengths distinct from the one used for spectrophotometry so as to carry out a nephelometric a... | 02/19/2008 |
| 7312554 | Piezoelectric devices and methods and circuits for driving same A drive circuit (18) senses a parameter of a piezoelectric actuator (14) operating in a device (10) and adjusts a drive signal of the piezoelectric actuator in accordance with the parameter. The drive circuit comprises a controller (100) ... | 12/25/2007 |
| 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 |
| 7291824 | Photosensing throughout energy range and in subranges An integrated circuit (IC) includes a photosensor array, some cells of which are reference cells that photosense throughout an application's energy range, while other cells of which are subrange cells that photosense within respective subranges. For example, the sub... | 11/06/2007 |
| 7286221 | Arrayed sensor measurement system and method Optical interrogation systems and methods are described herein that are capable of measuring the angles (or changes in the angles) at which light reflects, transmits, scatters, or is emitted from an array of sensors or specimens that are distributed over a large are... | 10/23/2007 |
| 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 |
| 7279096 | Polymer based permeable membrane for removal of ions Molecularly imprinted polymer membranes for selectively collecting phosphate, nitrate and ferric ions are disclosed, prepared by copolymerizing a matrix monomer, cross-linking agent, ion imprinting complex, permeability agent and polymerization initiator, after whic... | 10/09/2007 |
| 7259846 | Lab in a cuvette The present disclosure provides an apparatus for handling a liquid sample, wherein the apparatus includes integrated sample processing and sample evaluating components. The sample processing and evaluating components can include solid matrices that allow for optical... | 08/21/2007 |
| 7244395 | Apparatus for trace sulfur detection using UV fluorescence A method and system for performing low level sulfur UV fluorescence measures including an UV interference reduction system which removes or destroys interfering nitrogen oxides. The preferred nitrogen removal systems include introducing ozone into the system in suff... | 07/17/2007 |
| 7229833 | Method and a device for measuring, by photo-spectrometry, the concentration of harmful gases in the fumes through a heat-producing plant A method for measuring the concentration of harmful gases in flue gases through a heat-producing plant that includes a combustion space and a device located downstream of the combustion space, the device includes tubes, through which for instance water, steam or air... | 06/12/2007 |
| 7221448 | Test cell for a noble gas polarizer The invention relates to a sample cell with a glass body comprising a gas inlet and a gas outlet and at least one orifice, a plane glass window is fused into the orifice, the shape and size of the window corresponds to the shape and size of the orifice, the orifice ... | 05/22/2007 |
| 7211923 | Rotational motion based, electrostatic power source and methods thereof A power system includes a member with two or more sections and at least one pair of electrodes. Each of the two or more sections has a stored static charge. Each of the pair of electrodes is spaced from and on substantially opposing sides of the member from the othe... | 05/01/2007 |
| 7203386 | Self-referencing waveguide grating sensors Self-referencing optical sensors and methods are described herein that can be used to detect bio-chemical interactions (e.g., biological binding of antigen-antibody pairs) that occur in for example a microplate. In one embodiment, the self-referencing optical sensor... | 04/10/2007 |
| 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 |
| 7190383 | Misalignment detector and image forming apparatus A misalignment detector includes a light source, a synthesizing unit, a focusing unit, an image sensor, and a misalignment calculator. The light source, the synthesizing unit, the focusing unit, and the image sensor are arranged in such a manner that light illuminat... | 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 |
| 7178378 | Resonant sensor and sensing system The disclosed sensor chip includes a substrate and a moving member coupled to the substrate and disposed for movement relative to the substrate. The moving member moves relative to the substrate in a first direction and in a second direction in response to movement ... | 02/20/2007 |
| 7144736 | Method and apparatus for continuous fractional analysis of metallic mercury and water-soluble mercury in a gas A method and an apparatus which continuously separate and measure mercury in an exhaust gas in accordance with each chemical conformation and display a measurement result in real time. According to the method and the apparatus, water-soluble mercury in a gas is abso... | 12/05/2006 |
| 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 |
| 7105354 | Analyzer An analyzer characterized by comprising a chip and a detector, wherein the chip is an organic polymer member having a fine capillary through which a fluid sample or a fluid sample and a fluid reagent flow and can perform a chemical reaction on the sample in the capi... | 09/12/2006 |
| 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 |
| 7074365 | Detector for halogen toxicants and method The invention herein provides for the detection of certain organic halogen-containing agents or toxicants such as sarin, chloropicrin, mustard gas, mustard chlorohydrin, phosgene, chlorine, soman, lewisite, diphosgene and others by, in one embodiment, first reacting... | 07/11/2006 |
| 7057720 | Optical interrogation system and method for using same An optical interrogation system and method are described herein that are capable of generating light beams that have desired optical properties which are directed towards a specimen array. In one embodiment, the optical interrogation system includes a light source, ... | 06/06/2006 |
| 7008795 | Multi-way LED-based chemochromic sensor A chemochromic sensor includes multiple bi-directional LEDs, each optically aligned with one or more test areas. Each LED is used as both a light emitter when driven in forward bias, and as a light detector when driven in reverse bias. By alternating the bias on the... | 03/07/2006 |
| 7004041 | System for retrieving a gas phase sample from a gas stream containing entrained liquid, and sample conditioner assembly therefore A system for the retrieval and initial conditioning of sample gas for “on line” analyzers or filling of gas sample cylinders. The preferred embodiment of the present invention contemplates a system configured to obtain a representative gas phase sample from a pr... | 02/28/2006 |
