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| Number | Title | Issue Date |
| 8161796 | Particulate matter sensor with an insulating air gap An electrode assembly for a particulate matter sensor in a gas environment. The electrode assembly includes an insulating tube, a conductor, and a positioning structure. The insulating tube has an outer surface and defines an interior cavity with an interior surface... | 04/24/2012 |
| 8151626 | System and method for sensing high temperature particulate matter Sensor apparatus includes a housing, a probe mounted to the housing, the probe including an elongate first part and a helical coil second part conductively coupled to each in series with first and second terminals at opposite ends thereof, the probe to be inserted i... | 04/10/2012 |
| 8047054 | Particulate matter sensor Exemplary embodiments of the present invention relate to methods and devices for monitoring the flow of particulate matter within an exhaust gas stream. In one exemplary embodiment, a particulate matter sensor for an exhaust system of an engine is provided. The part... | 11/01/2011 |
| 8047055 | Size segregated aerosol mass concentration measurement with inlet conditioners and multiple detectors A system for measuring size segregated mass concentration of an aerosol. The system includes an electromagnetic radiation source with beam-shaping optics for generation of a beam of electromagnetic radiation, an inlet sample conditioner with adjustable cut-size that... | 11/01/2011 |
| 8047053 | Mail parcel screening using multiple detection technologies Various screening systems are disclosed, including a system including a radiation detection component, a toxic chemical detection component, a toxic chemical agent sampling component, a bio-threat detection component, a puffer-based bio-threat sampling component, an... | 11/01/2011 |
| 8037738 | Particulate matter sensor Exemplary embodiments of the present invention relate methods and devices for measuring flow rate of particulate matter within an exhaust gas stream. In one particular exemplary embodiment, a sensor for detecting and monitoring particulate matter within an exhaust f... | 10/18/2011 |
| 8033159 | Sensor and operating method for detecting soot The invention relates to a sensor and a method for detecting soot, said method comprising the following steps: a first operating temperature is set on the sensor for a measuring phase, such that soot can be deposited on the surface of the substrate, but depositions ... | 10/11/2011 |
| 8033158 | 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... | 10/11/2011 |
| 7966862 | Electrode structure for particulate matter sensor A particulate matter detector formed in an insulated device such as a spark plug. The insulated device has a center electrode having a first end and a second end. The first end of the center electrode passes through the insulated device and may be connected to a ter... | 06/28/2011 |
| 7900500 | Particulate matter sensor electrodes with embedded self-calibrator, and methods using same A particulate matter (PM) sensor includes an embedded self-calibrator. The PM sensor is to be installed in an exhaust corridor of an internal combustion engine. The PM sensor can self-calibrate by imposing a known potential across a protective housing in which the c... | 03/08/2011 |
| 7891232 | Rigid particulate matter sensor A sensor to detect particulate matter. The sensor includes a first rigid tube, a second rigid tube, a detection surface electrode, and a bias surface electrode. The second rigid tube is mounted substantially parallel to the first rigid tube. The detection surface el... | 02/22/2011 |
| 7886578 | Sensor element for particle sensors and method for operating the sensor element A sensor element for gas sensors for determining the concentration of particulates in gas mixtures, in particular soot sensors having at least one first measuring electrode applied to an electrically insulating substrate and at least one second measuring electrode, ... | 02/15/2011 |
| 7832254 | Particulate sensor and method for operating a particulate sensor A sensor for determining the concentration of particulates in gas mixtures is described, a soot sensor in particular, having a ceramic sensor body surrounded by a metallic housing and having a first and a second measuring electrode. In this instance, the first measu... | 11/16/2010 |
| 7797984 | Vacuum apparatus including a particle monitoring unit, particle monitoring method and program, and window member for use in the particle monitoring A semiconductor manufacturing apparatus includes a processing chamber for performing a manufacturing processing on a wafer. A gas supply line for introducing a purge gas is connected to an upper portion of the processing chamber, a valve being installed on the gas s... | 09/21/2010 |
| 7721588 | Systems and methods for detecting particles A method of detecting particles during inspection is provided. The method includes establishing a security checkpoint including a detection system, wherein the detection system includes a chamber defining a passage and includes a plurality of jets. The method also i... | 05/25/2010 |
| 7610793 | Residence time chamber and sampling apparatus A residence time chamber and sampling apparatus for use in a system for sampling emission products from an emissions source, for example combustion engines including gasoline, diesel and natural gas engines, for subsequent measurement and analysis of the emission pr... | 11/03/2009 |
| 7574895 | Sensor for detecting particles in a gas stream and method for its manufacture A soot particle sensor for an exhaust system of an internal combustion engine includes a first electrode device and a second electrode device. The electrode devices are situated at a distance from one another and are able to be exposed to the gas stream, at least in... | 08/18/2009 |
| 7543478 | Device and method for detecting hazardous material in mail A mail screening device for hazardous materials is disclosed. The mail screening device comprises a sample collection unit that uses air jets or air knives to dislodge residues of hazardous materials from a mail, and a detection unit that detects the hazardous mater... | 06/09/2009 |
| 7503204 | 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... | 03/17/2009 |
| 7481095 | Liquid particle mass measurement in gas streams A system for detecting fine liquid, e.g., oil, particles in a gas system having a conduit through which a gas, e.g., hydrogen, air, etc., will flow. The detection system includes a monitor including a high sensitivity photometric sensor, a data acquisition unit and ... | 01/27/2009 |
| 7464581 | Vacuum apparatus including a particle monitoring unit, particle monitoring method and program, and window member for use in the particle monitoring It is an object to provide a vacuum apparatus capable of evaluating its cleanness precisely by surely monitoring particles including deposits readily detached from the apparatus, and a particle monitoring method and program employed therein, and a window member for ... | 12/16/2008 |
| 7458247 | Vacuum apparatus including a particle monitoring unit, particle monitoring method, and program A semiconductor manufacturing apparatus includes a processing chamber for performing a manufacturing processing on a wafer. A gas supply line for introducing a purge gas is connected to an upper portion of the processing chamber, a valve being installed on the gas s... | 12/02/2008 |
| 7430893 | Systems and methods for detecting contaminants The present invention relates to a system and method for sampling a gas flow to measure one or more contaminants within a semiconductor processing tool. The system includes a portable unit containing one or more dry traps, Tenax traps and, if desired, wet impingers.... | 10/07/2008 |
| 7416902 | Method and apparatus for airborne particle sorting An apparatus for airborne particle sorting is provided comprising a charging system adapted for applying an electrostatic charge to the particles, such that particles of at least a first group are deflected to a greater extent than particles of a second group are de... | 08/26/2008 |
| 7407531 | Particle surface treatment for promoting condensation A system is disclosed for condensation particle counting in conjunction with modifying an aerosol to enhance the formation and growth of droplets of a selected working fluid, preferably water. Before saturation with the working fluid, the aerosol is exposed to an ae... | 08/05/2008 |
| 7401498 | Multiple trace portal detection systems A detector system that can analyze multiple samples with a single detector. The detector may contain a portal with a first opening and a second opening. A first sample is obtained from the first opening and a second sample is obtained from the second opening. The op... | 07/22/2008 |
| 7363830 | Discrete volume sampling device using a vacuum A discrete volume vacuum sampling device is provided with a vacuum tube, a sample tube, and a sample container. The container defines a discrete volume of product to be sampled from a product bed within a processing machine. The sampler tube extends between the cont... | 04/29/2008 |
| 7350398 | Smoke sensing device for internal combustion engines A smoke sensing device for internal combustion engines comprises an electrode assembly with a heated insulator, a high voltage spark system, a voltage attenuator and a signal conditioning system. The electrode assembly is installed in an engine exhaust pipe so that ... | 04/01/2008 |
| 7350397 | Device for measuring the quantity of solid particles in a gas medium A device for detecting the amount or concentration of particulate matter in a gas medium comprises a structure for the deposit of solid particles, at least a first and a second electrode associated to the structure, and means for measuring an electric quantity betwe... | 04/01/2008 |
| 7347112 | Air sampler with integrated airflow sensing Air sampler with integrated airflow sensing. The air sampler according to at least some embodiments includes an air mover that is operable to move air over a sampling media. An integrated airflow sensor is in fluid communication with the air mover. The air mover ope... | 03/25/2008 |
| 7343781 | Systems and methods for detecting liquid particles in a gas system A system for detecting fine liquid, e.g., oil, particles in a gas system having a high pressure compressor and at least two gas handling devices, e.g., a coalescer and at least one adsorber. The detection system uses plural sensors and a monitor unit to detect the p... | 03/18/2008 |
| 7343782 | System and method for performing quantifiable release spore testing on bioaerosol detection technologies A system for testing devices for detecting airborne particulate matter generates a first airflow and a second airflow. The second airflow is filtered to remove ambient airborne particulate matter from the second airflow, and particulate matter to be detected is aero... | 03/18/2008 |
| 7338638 | Trapping materials for trace detection systems The invention is directed to a trap material use in a chemical trace detection portal for detecting trace amounts of contraband, and more particularly for detecting vapors and particles emitted from drugs and explosive devices. The trap material is made of a metalli... | 03/04/2008 |
| 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 |
| 7334453 | Modular particulate sampler A gas sampler includes an impact disc for removing larger particles from a gas flow drawn by a pump and a filter for capturing smaller particles, also positioned in the flow path. The sampler is conveniently dissembled and reassembled to remove and replace the impac... | 02/26/2008 |
| 7328603 | 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... | 02/12/2008 |
| 7325441 | Personal mask test system A personal mask testing system (PMTS) is of a size of a human hand. The PMTS has several energy efficient features that permit running the PMTS from a battery source within the housing. The PMTS also includes a replaceable vapor source. ... | 02/05/2008 |
| 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 |
| 7316152 | 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... | 01/08/2008 |
| 7299683 | Metal particle sensor system A metal particle sensor system for detecting metal particles in an oil line. The metal particle sensor system may include a metal particle sensor positioned about the line, an orifice positioned within the line and downstream of the metal particle sensor, a first pr... | 11/27/2007 |
