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| Number | Title | Issue Date |
| 8158944 | Atmospheric gas detection apparatus and method A method of detecting a target gas includes the step of traversing a target area with a gas-filter correlation radiometer having a field of view oriented towards the target area. The gas-filter correlation radiometer receives reflected radiation in a passband from t... | 04/17/2012 |
| 8101915 | Detection of chemicals with infrared light The present invention is directed to a method for non-contact or stand off chemical detection by selectively exciting one or more analytes of interest using an IR source tuned to at least one specific absorption band without significantly decomposing the analyte and... | 01/24/2012 |
| 8063371 | Device for indicating illicit substances in the exhalation air of a machine operator A device for a continuous indication of illicit substances in the exhalation air of face of the machine operator comprises an IR source and an IR detector being sensitive to wave length having an absorbance of the illicit substance, whereby the beam path of the IR s... | 11/22/2011 |
| 7977639 | Device for the remote optical detection of gas An remote optical gas detection device comprising a detection housing (30) connected to an electronic power supply unit and to a human-machine interface, this detection housing containing an infrared lens (46) for forming an image on an uncooled microb... | 07/12/2011 |
| 7977638 | Long-term stable optical sensor arrangement, especially a hydrogen sensor, and combined gas sensor arrangement The present invention relates to optical sensor arrangements, especially sensors of the type that can be used in motor vehicles and which can detect hydrogen in a gaseous measured medium. According to the invention, an optical sensor arrangement has the at least one... | 07/12/2011 |
| 7939804 | System and method for detecting gas leaks A gas detection system is disclosed that uses an infrared illumination source and an infrared imaging detector. The infrared source is selected to emit at wavelengths corresponding to an absorption band of a gas to be detected. The region to be analyzed for the gas ... | 05/10/2011 |
| 7855367 | Remote sensing of gas leaks A gas filter correlation radiometer mounted on an aircraft is flown over a target area. The gas filter correlation radiometer is configured to detect ethane (C2H6) gas in the event of a gas leak. The gas filter correlation radiometer uses backg... | 12/21/2010 |
| 7687776 | Gas and/or flame imaging system with explosion proof housing A gas imaging system for remotely detecting gas emissions by passive images of infrared radiation includes an optical system having a field of view. The optical system has a lens, an optical filter system for filtering light passed through the lens, and a photosensi... | 03/30/2010 |
| 7564033 | Microstructured sensor The invention relates to a microstructured sensor, having at least one measurement chip in which there is formed a first measurement area having a first measurement structure and a second measurement area having a second measurement structure, the measurement areas ... | 07/21/2009 |
| RE40767 | Unmanned integrated optical remote emissions sensor (RES) for motor vehicles An unmanned integrated RES 12 integrates all of its components except the reflector 22 into a single console 30 that is positioned at the side of a road and has a CPU 36 that controls calibration, verification and data gathering. The RES'... | 06/23/2009 |
| 7544943 | Method and system for remote exhaust emission measurement A remote vehicle emissions measurement system including a radiation source, an adaptable radiation detection unit and a processing unit, characterized in that the radiation source includes an infrared source, an ultraviolet source or a combination thereof; the radia... | 06/09/2009 |
| 7514685 | Infrared-type gas detector An infrared-type gas detector is provided with a Fabry-Perot filter through which infrared having a predetermined wavelength is selected to pass, a first detection unit for receiving the infrared having passed through the Fabry-Perot filter and outputting a detectio... | 04/07/2009 |
| 7485861 | System and method for remote emissions sensing including calculation and calibration techniques compensating for temperature and pressure effects A remote emissions sensing (RES) system and method for measuring the exhaust gas composition of a motor vehicle is provided, including calibration methodologies for compensating for the effects of ambient temperature and/or pressure. ... | 02/03/2009 |
| 7361922 | Differential absorption lidar apparatus having multiplexed light signals with two wavelengths in a predetermined beam size and beam shape A differential absorption lidar includes: a light signal generation unit for generating first, second CW light signals with first, second wavelengths having different absorption coefficients with respect to a target, a light intensity modulation unit for subjecting ... | 04/22/2008 |
| 7361472 | Methods for providing extended dynamic range in analyte assays Methods for enhancing the dynamic range for specific detection of one or more analytes in assays using scattered-light detectable particle labels. The methods involve utilizing variations in detection technique and/or signal processing to extend the dynamic range to... | 04/22/2008 |
| 7360397 | Detector with condenser An ambient condition detector has a housing that carries a sensor of an airborne constituent such as a gas, and a condenser for minimizing an inflow of moisture into the sensor. A filter can be used to reduce fluid flow velocity prior to passing through or by the co... | 04/22/2008 |
| 7359804 | System and method for calibrating remote emissions sensing instruments A system and method is provided for obtaining calibration curves for CO and CO2 during laboratory calibration of one or more remote emissions sensing (RES) instruments, and for self-calibration of on-road RES instruments to compensate for changes in backg... | 04/15/2008 |
| 7355626 | Location of events in a three dimensional space under surveillance A surveillance system using an array of detectors onto which energy from the scene under surveillance is focused can indicate the direction of an event that has been recognized. The invention uses two or more arrays to locate events in three dimensions, and to defin... | 04/08/2008 |
| 7352461 | Particle detecting method and storage medium storing program for implementing the method A particle detecting method which is capable of detecting the number of low-speed particles accurately, and a storage medium storing a program for implementing the method. Intensity of scattered light generated when a light emitted into a gas stream is scattered by ... | 04/01/2008 |
| 7339168 | System and method for detecting water vapor within natural gas A system and method are disclosed for the detection of water vapor in a natural gas background. The system includes a light source operating in a wavelength range such as, 1.877-1.901 μm, 2.711-2.786 μm, or 920-960 nm, passes through the natural gas to be detected... | 03/04/2008 |
| 7333196 | Evaluation apparatus and evaluation method An evaluation apparatus which evaluates a sample having a porous layer. The apparatus includes a light source which irradiates the sample with light, an imaging spectrometer which spectroscopically measures light reflected by the sample and senses an image, a first ... | 02/19/2008 |
| 7326932 | Sensor and cap arrangement The invention provides a sensor element formed in a first substrate and at least one optical element formed in a second substrate, the first and second substrates being configured relative to one another such that the second substrate forms a cap over the at least o... | 02/05/2008 |
| 7315377 | System and method for remote sensing and/or analyzing spectral properties of targets and/or chemical species for detection and identification thereof A method and a low-cost, robust and simple system for remote sensing and analyzing spectral properties of targets as a means to detect and identify them is introduced. The system can be highly portable but is usable in fixed locations or combination thereof. An aspe... | 01/01/2008 |
| 7312452 | Mobile remote detection device and remote detection method for methane gas accumulations The invention relates to a mobile remote detection device for accumulations of methane, comprising an emitter device having a light source in order to generate light, the wavelength of said light source being tuned with the spectral signature of methane, whereby the... | 12/25/2007 |
| 7302834 | Method for supplying an internal combustion engine with conditioned combustion gas, device for carrying out said method, method for determining the quantities of pollutants in the exhaust gases of an internal combustion engine, and device for carrying out said method A method and apparatus for determining the quantities of pollutants in the exhaust gases of internal combustion engines wherein an essentially constant and fully conditioned quantity of humidity and/or temperature-conditioned combustion gas is supplied to the intern... | 12/04/2007 |
| 7301148 | Methods and systems for remote detection of gases Novel systems and methods for remotely detecting at least one constituent of a gas via infrared detection are provided. A system includes at least one extended source of broadband infrared radiation and a spectrally sensitive receiver positioned remotely from the so... | 11/27/2007 |
| 7291503 | Reversible resistivity-based sensors One aspect of the present invention relates to a method for detecting the presence of an analyte by comparing the conductivity of a mixture containing an analyte and a sensor to the conductivity of the sensor in the absence of analyte. In certain embodiments, the se... | 11/06/2007 |
| 7288770 | Real-time UV spectroscopy for the quantification gaseous toxins utilizing open-path or closed multipass white cells The present invention relates, generally, to a portable system for UV spectroscopy capable of the detection and quantification of chemicals from either open air environments or by insertion of a sample using a sample chamber. The system is capable of simultaneously ... | 10/30/2007 |
| 7288766 | Infrared gas detector and method of the same An infrared gas detector for detecting a density of a sample gas includes an infrared light sensor for detecting the density of the sample gas under an influence of water vapor based on an intensity of received infrared light of a specific wavelength, and a humidity... | 10/30/2007 |
| 7283810 | Communication device of mobile unit Communications are performed between a mobile unit and a terminal device. The mobile unit is provided with a communication device that is capable of communicating with the terminal device if it is connected electrically with a power supply. When an engine key switch... | 10/16/2007 |
| 7275414 | Extractive sampling system and method for measuring one or more molecular species A non-contact, extractive sampling system and method is provided for measuring the exhaust gas composition and fine particle composition of exhaust emissions of various types of vehicles under actual operating conditions. A portion (or sample) of an exhaust plume of... | 10/02/2007 |
| 7274994 | Exhaust opacity measuring device A remote emissions sensing system and method for sensing exhaust emissions from motor vehicles is provided where the system determines the opacity of an exhaust plume. The system comprises a radiation source that emits radiation which is passed through the exhaust p... | 09/25/2007 |
| 7265842 | Method for detecting a gaseous analyte present as a minor constituent in an admixture A gaseous target analyte present as a minor constituent in an admixture with at least one other gaseous species can be detected using a cavity enhanced optical spectrometer by a process comprising the steps of: i) identifying a plu... | 09/04/2007 |
| 7255474 | Parallel infrared spectroscopy apparatus and method A library of material samples is provided in a condition suitable for imaging using infrared (IR) spectroscopy. The samples are provided to one or more detection cells, each of the cells including or containing a reflective surface. Preferably, for imaging, an energ... | 08/14/2007 |
| 7244122 | Methods for determining optical characteristics of dental objects Color measuring systems and methods such as for determining the color or other characteristics of teeth are disclosed. Perimeter receiver fiber optics are spaced apart from a central source fiber optic and receive light reflected from the surface of the object/tooth... | 07/17/2007 |
| 7240839 | Color measurement apparatus operable as a pointing device, a computer display measurement device and a printer output measurement device A color measurement apparatus is adapted as an attachment for a personal computing system. An interface integral to the color measurement apparatus couples the color measurement apparatus to the personal computing system. A computer pointing device integral to the c... | 07/10/2007 |
| 7238942 | Spectrometric using broadband filters with overlapping spectral ranges The invention provides a spectrometer (10) which includes a filter arrangement (16,18), in addition to any option filters (20) for limiting an operational wavelength range of the spectrometer, the filter arrangement (16,18) comprising a p... | 07/03/2007 |
| 7227625 | Meteorological observation LIDAR system A lidar system for meteorological observation, in which pulsed laser light having a prescribed central frequency is emitted from a laser device and reflected light thereof is observed, includes: a spectral analyzer for spectrally analyzing reflected light for observ... | 06/05/2007 |
| 7227122 | Image processing apparatus and method for processing images An image processing apparatus uses a camera to pick up images of an image pickup target illuminated by a transmission type illumination, via optical filters, and then allows a spectral characteristic estimating section and a pigment amount estimating section to calc... | 06/05/2007 |
| 7217121 | Method and apparatus for improved process control in combustion applications This invention relates to a method and apparatus for improved process control in combustion applications, and particularly those relating to the steelmaking industry. An apparatus is provided for process control in a combustion application comprising a laser to tran... | 05/15/2007 |
