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| Number | Title | Issue Date |
| 7836751 | Ultra fine particle sensor The invention relates to an ultra fine particle sensor (1) for sensing airborne particles with a diameter in a range of approximately 1-500 nm. The sensor comprises an air inlet (2) for entry of a flow of ultra fine particles and a concentration variat... | 11/23/2010 |
| 7549318 | Method and device for the measurement of the number concentration and of the average diameter of aerosol particles According to the invention, particles of an aerosol are firstly charged in a unipolar manner in a diffusion charger (10). They are subsequently led through a diffusional precipitator (20) in which a part of the particles is precipitated. The diffusiona... | 06/23/2009 |
| 7437908 | Particle counter A particle counter has a saturator inhaling air in an atmosphere and vaporizing a working liquid therein; and an electrical detection unit electrically shielding an internal space thereof to maintain a temperature of the space to be constant, the air and vaporized w... | 10/21/2008 |
| 7428848 | Electrostatic sampler and method The present invention is an electrostatic collector for low cost, high throughput, high efficiency sampling and concentration of bioaerosols. The device is small enough to be portable and can be contained within or placed on the wall of a typical office or hospital ... | 09/30/2008 |
| 7384666 | Method and apparatus for fabricating quantum dot functional structure, quantum dot functional structure, and optically functioning device Fabrication of a quantum dot functional structure having ultra-fine particles homogeneously distributed in a transparent medium includes depositing such particles having a single particle diameter and uniform structure onto a substrate with the transparent medium. A... | 06/10/2008 |
| 7334401 | Apparatus for sensing particulates in a gas flow stream A particulate sensor for sensing the presence of particulates in a gas flow stream is disclosed. The particulate sensor includes a housing having a flow divider to provide a first flow path and a second flow path. A heater is disposed and configured to provide unifo... | 02/26/2008 |
| 7318338 | Measuring device for measuring aerosol The invention relates to a measuring device for measuring aerosols, which measuring device comprises detection means (13), means (41) for conveying a signal from the detection means (13), a first insulation (43), a second insulation (4... | 01/15/2008 |
| 7298127 | Particle detection Particle detection and characterizing apparatus has an insulating tube along which the particles flow. Five electrodes spaced along the outside of the tube are connected via amplifiers to a processor arranged to measure the charge on the particles. The apparatus als... | 11/20/2007 |
| 7275415 | Particulate-based flow sensor A fluid conveyance apparatus having more than one particulate matter sensing probe situated at two or more locations on the apparatus. Signals from the probes from at least two locations may indicate particulate matter flowing within a fluid through the conveyance a... | 10/02/2007 |
| 7243560 | Method and apparatus for airborne particle collection Embodiments of an apparatus for collecting biological aerosols from an air sample include a hollow tube adapted for pumping a liquid through an interior volume to an outer surface and a collection surface disposed on the outer surface and adapted for collecting the ... | 07/17/2007 |
| 7235123 | Particle transport and near field analytical detection Particle collection, transport, and detection systems are disclosed. The systems are uniquely adapted for collecting or concentrating particles from a flowing medium and then transporting the collected particles to a desired location or for subsequent analysis. Elec... | 06/26/2007 |
| 7174767 | Particulate matter analyzer and method of analysis An apparatus and method for the analysis of particles in an aerosol includes providing an inlet for the aerosol, a sample collector which accumulates particles passing through the inlet, a sample conditioning system which can vary at least one condition relating to ... | 02/13/2007 |
| 7172730 | Thermal sensor A thermal sensor has a substrate defining a reaction chamber. The reaction chamber has an inlet for conducting sample into the reaction chamber, a reaction surface and an orifice adjacent the reaction surface defining an outlet from the reaction chamber. The reactio... | 02/06/2007 |
| 7100423 | Method and apparatus for monitoring particles in a flowing gas A method and apparatus for monitoring particulate matter in a gas sample and the air quality associated therewith is provided. ... | 09/05/2006 |
| 7081154 | Device and method for determining a malfunction in a filter A device for detecting a failure of a filter used to clean a gas stream, in particular an exhaust gas stream, of soot particulates, including a chamber which is insertable into the gas stream to be cleaned in addition to the filter and which is at least partially cl... | 07/25/2006 |
| 7041153 | Method of measuring floating dusts In a method of measuring particles floating in an atmosphere, the atmosphere containing the particles is sucked into a container, ions are generated from a discharge electrode disposed in the container to charge the particles with the ions. A dust-collecting electro... | 05/09/2006 |
| 7038460 | Electrostatic dust detector An apparatus for detecting dust in a variety of environments which can include radioactive and other hostile environments both in a vacuum and in a pressurized system. The apparatus consists of a grid coupled to a selected bias voltage. The signal generated when dus... | 05/02/2006 |
| 6978657 | Portable chemical detection system with intergrated preconcentrator A portable system for the detection of chemical particles such as explosive residue utilizes a metal fiber substrate that may either be swiped over a subject or placed in a holder in a collection module which can shoot a jet of gas at the subject to dislodge residue... | 12/27/2005 |
| 6971258 | Particulate matter sensor A sensor for detecting particulate matter in an exhaust stream of an engine. The sensor may be a spark-plug-like device having an extended center electrode composed of a stainless steel or other material. The electrode may have a thin passivating layer formed on it.... | 12/06/2005 |
| 6964189 | Portable aerosol contaminant extractor A compact, portable, aerosol contaminant extractor having ionization and collection sections through which ambient air may be drawn at a nominal rate so that aerosol particles ionized in the ionization section may be collected on charged plate in the collection sect... | 11/15/2005 |
| 6955075 | Portable liquid collection electrostatic precipitator A portable liquid collection electrostatic collection precipitator for analyzing air is provided which is a relatively small, self-contained device. The device has a tubular collection electrode, a reservoir for a liquid, and a pump. The pump pumps the liquid into t... | 10/18/2005 |
| 6951582 | Air purifier device An air purifier device includes a fan unit in an electrically conductive housing for drawing ambient air into the housing via an air inlet, and an electrically conductive dust-collecting member in the housing and disposed adjacent to an air outlet. A detecting unit ... | 10/04/2005 |
| 6923848 | Collecting apparatus of floating dusts in atmosphere A collecting device for collecting particles floating in the atmosphere includes a collecting container; a pump for sucking the atmosphere into the collecting container; a discharge electrode disposed in the collecting container for generating single polarity ions t... | 08/02/2005 |
| 6904787 | Method for measuring suspended particulate matter in atmospheric air Particulate collector is carried onto airplane and collects suspended particulate matter in the atmospheric air in such a manner that suspended particulate matter is electrically charged by single-pole ions generated by a discharge electrode and the thus electricall... | 06/14/2005 |
| 6881246 | Collecting device for suspended particles A collecting device for collecting suspended particles includes a mobility analysis device; a collecting container connected to an outlet of the mobility analysis device; a discharge electrode disposed inside the collecting container for charging the particles insid... | 04/19/2005 |
| 6842008 | Gas detector with modular detection and discharge source calibration A pulsed discharge detector includes a device and method for modular measurement of ionization signals from a sample. The pulsed discharge detector includes a discharge source in a chamber, a collector spaced from the discharge source, a monitor connected to a disch... | 01/11/2005 |
| 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 |
| 6807874 | Collecting apparatus of floating dusts in atmosphere A collecting device for collecting particles floating in the atmosphere includes a collecting container; a pump for sucking the atmosphere into the collecting container; a discharge electrode disposed in the collecting container for generating single polarity ions t... | 10/26/2004 |
| 6796164 | Integrated fluidics system for simplified analysis of aerosolized biological particles and particle detection ticket thereof An integrated fluidics system for simplified analysis of aerosolize biological particles has a unitary self-contained ticket provided with a sample fluid reservoir, an array of particle-detection strips, which is located adjacent to the sample reservoir, and, option... | 09/28/2004 |
| 6752003 | Method and device for the extractive triboelectric measurements of dust and aerosols in streaming gases A method and a device for the extractive triboelecric measurement of dust and aerosols is provided. A partial gas stream is removed from a main stream and drawn through a triboelecric measuring chamber with a variable or constant temperature, at a variable or consta... | 06/22/2004 |
| 6743870 | Process for early detection of reactor fouling in gas phase polymerization A process for early detection of reactor fouling occurring during a gas phase polymerization of olefin(s) using a fluidized bed reactor having a fluidization grid fitted with detection devices. ... | 06/01/2004 |
| 6648975 | Method and apparatus for fabricating quantum dot functional structure, quantum dot functional structure, and optically functioning device The present invention is to fabricate a quantum dot functional structure having ultra-fine particles homogeneously distributed in a transparent medium by efficiently fabricating high-purity ultra-fine particles having a single particle diameter and unifor... | 11/18/2003 |
| 6604406 | Human portable preconcentrator system A preconcentrator system and apparatus suited to human portable use wherein sample potentially containing a target chemical substance is drawn into a chamber and through a pervious screen. The screen is adapted to capture target chemicals and then, upon h... | 08/12/2003 |
| 6568245 | Evaporative electrical detector An aerosol detector, particularly well suited for liquid chromatography applications, includes a corona discharge source controlled to selectively charge the non-volatile residue particles of an aerosol. The aerosol initially is composed of droplets of a ... | 05/27/2003 |
| 6523393 | Human portable preconcentrator system A preconcentrator system and apparatus suited to human portable use wherein sample potentially containing a target chemical substance is drawn into a chamber and through a pervious screen. The screen is adapted to capture target chemicals and then, upon h... | 02/25/2003 |
| 6454862 | Fine-particle classification apparatus and functional material production apparatus In the fine-particle classification apparatus of the present invention, a carrier gas velocity in a take-in section to introduce the aerosol to the fine-particle classification apparatus from the aerosol generation apparatus is increased so as to decrease... | 09/24/2002 |
| 6133740 | Chlorine specific gas chromatographic detector A method and apparatus are set forth which enables a gas chromatographic column output to be connected with a pulse discharge chamber in which chemically bound chlorine in volatile organic or inorganic samples is measured. A spark discharge is formed in t... | 10/17/2000 |
| 6107805 | Extended detection zone in an ionization detector An ionization detector for detection of an analyte includes a source chamber having a source of ionizing particles and receiving a fluid stream of detector gas; an ionization chamber connected to the source chamber at an ionization chamber entrance thereb... | 08/22/2000 |
| 6018985 | Method and apparatus for measuring unattached radon progeny A method and apparatus for measuring the concentration of unattached Radon progeny in air is described. The method consists of measuring the conductivity of the air or alternatively the concentration of fast ions in the air, and converting the measurement... | 02/01/2000 |
| 5892364 | Trace constituent detection in inert gases A method and apparatus for the detection of trace constituents in inert gases. Three modes of operation of the said invention are most preferred. In the first embodiment, a dielectric barrier discharge cell receives an inert gas, excites the gas, and the ... | 04/06/1999 |
