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8959979 Method for evaluating degradation of a particulate matter sensor after an engine start  
A system for improving operation of an engine having a particulate matter sensor is presented. The system may be used to improve engine operation during cold starts especially under conditions...
8919183 High-flow dual-channel differential mobility analyzer  
A new instrument for electrical-mobility based size segregation of particles at high resolution is described. The instrument called the high-flow dual-channel differential mobility analyzer...
8829913 Discharge ionization current detector  
A technique for reducing an electromagnetic noise entering an electrode or a drift of a signal due to a fluctuation in the ambient temperature is provided to improve the S/N ratio of a signal...
8739602 Portable ultrafine particle sizer (PUPS) apparatus  
The Portable Ultrafine Particle Sizer (PUPS) invention is provided. The PUPS is an instrument which can measure particle number concentration for particle sizes under 200 nanometers in-situ. The...
8713991 Agglomeration and charge loss sensor for measuring particulate matter  
A sensor assembly includes a voltage source, a sensor electrode, a grounded assembly, an integration capacitor, and a current meter. The sensor electrode is coupled to the voltage source to...
8701466 Device for characterizing the evolution over time of a size distribution of electrically-charged airborne particles in an airflow  
A device is presented that is capable of recording the evolution over time of the characteristics of a size distribution of electrically-charged airborne particles in an airflow. The device...
8677803 Particulate matter detection method for a particulate matter sensor  
A method of detecting particulate matter on a particulate matter sensor includes the steps of measuring an electrical characteristic associated with the sensor, determining a value corresponding...
8652240 Fine particle sensor and mounting structure therefor  
There is provided a fine particle sensor for detecting fine particles in exhaust gas, including an ion generating unit for generating ions by corona discharge, a charging unit for charging the...
8607616 Sensor for sensing airborne particles  
A particle sensor is disclosed capable of sensing airborne particles larger than about 10 nm in an airflow passing through a passage inside the sensor. The sensor comprises a high-voltage...
8539817 Particulate matter detection device  
A particulate matter detection device includes a plate-like element base material including, on one surface thereof, a formed recess portion to collect a particulate matter; a pair of measurement...
8452489 Controlling system for controlling an air handling system  
The invention relates to a controlling system for controlling an air handling system that is arranged to handle air in an enclosure such as a cabin of a vehicle. The controlling system comprises a...
8382884 Particulate matter detection device  
A PM sensor is provided having high responsiveness and capable of long term detection. A PM sensor includes a sensor element that has particulate collection electrodes to which a particulate...
8165786 System for particulate matter sensor signal processing  
A system having a particulate matter sensor in an exhaust stream of an engine upstream from a particulate filter and another such sensor downstream from the filter. There may also be an exhaust...
8106785 Smoke detector  
To enable an air velocity of sampling air to be precisely measured, a smoke detector (S) includes: a smoke detection part (22) connected to a sampling pipe (11); a fan (12) that sucks sampling air...
8077018 Smoke detector  
To enable an air velocity of sampling air to be precisely measured, a smoke detector (S) includes: a smoke detection part (22) connected to a sampling pipe (11); a fan (12) that sucks sampling air...
8035404 Method for influencing soot deposits on sensors  
A method is described for controlling the soot deposition on sensors. A sensor element is provided, which includes a first electrode and a second electrode. Different measuring voltages U1 and U2...
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...
7765792 System for particulate matter sensor signal processing  
A system having a particulate matter sensor in an exhaust stream of an engine upstream from a particulate filter and another such sensor downstream from the filter. There may also be an exhaust...
7752931 Nanopatterned surfaces and related methods for selective adhesion, sensing and separation  
A surface comprises a surface member and a plurality of components thereon. Such heterogenous surface compositions and configurations, related systems and methods for sensing particle or analyte...
7605910 Particle measuring system and method  
A particle measuring system and method is capable of separating particles on a size-by-size basis and measuring the number and size of the particles one by one on a real time basis. The particle...
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...
7549317 Particle-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...
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...
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...
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...
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...
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...
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...
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...
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...
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.
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...
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...
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...
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,...
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...
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...
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...
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...
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...
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...
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...
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.
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...
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...
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...
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...
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...
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...
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...

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