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| Number | Title | Issue Date |
| 7852465 | System for measuring liquid flow rates A system for monitoring non-volatile residue concentrations in ultra pure water includes a nebulizer for generating an aerosol composed of multiple water droplets, a heating element changing the aerosol to a suspension of residue particles, and a condensation partic... | 12/14/2010 |
| 7777868 | System for measuring non-volatile residue in ultra pure water A system for monitoring non-volatile residue concentrations in ultra pure water includes a nebulizer for generating an aerosol composed of multiple water droplets, a heating element changing the aerosol to a suspension of residue particles, and a condensation partic... | 08/17/2010 |
| 7777867 | Devices, methods, and systems for detecting particles in aerosol gas streams Turbulent mixing condensation devices, methods, and systems adapted to condense a working fluid on particles from a sample gas to enlarge the particles for subsequent detection are provided. The device includes a vapor generator adapted to produce a working-fluid sa... | 08/17/2010 |
| 7656510 | Stream-wise thermal gradient cloud condensation nuclei chamber A cloud condensation nuclei instrument including an aerosol flow line (320) to carry a desired sample to the CNN chamber (310) and a temperature control unit (313A, 313B) to provide a monotonically increasing temperature profile along the... | 02/02/2010 |
| 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 measuring system includes a sampling device for guiding a stream of an ... | 10/20/2009 |
| 7363828 | Aerosol measurement by dilution and particle counting The present invention includes an apparatus for aerosol measurement having a high concentration of particles the apparatus comprising a diluter for diluting the concentration of particles in a sample aerosol stream to form a diluted aerosol stream, and a sensor for ... | 04/29/2008 |
| 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 |
| 7300695 | Alignable diffractive pigment flakes Diffractive pigment flakes are selectively aligned to form an image. In one embodiment, flakes having a magnetic layer are shaped to facilitate alignment in a magnetic field. In another embodiment, the flakes include a magnetically discontinuous layer. In a particul... | 11/27/2007 |
| 7268881 | Light scattering detector The invention concerns high sensitivity light scattering detection and its application to evaporative light scattering detection in liquid chromatography. The exemplary embodiment includes a detection cell to accept particles suspended in a gas stream and permit a p... | 09/11/2007 |
| 7265369 | Method and system for detecting chemical substance A chemical detecting apparatus includes a substrate 10 for chemicals in gas-to-be-monitored to be adsorbed to, a substrate adsorption rate improving means 12 which enhances the adsorption of the chemical in the gas-to-be-monitored to the substrate, an ... | 09/04/2007 |
| 7258915 | Flake for covert security applications Covert flakes having one or more symbols and/or a selected shape are used in a composition, such as ink or paint, to provide a covert security feature to an object. In some embodiments the composition includes base pigment, and the covert flakes are covert pigment f... | 08/21/2007 |
| 7245408 | Systems and methods for producing wide field-of-view holographic displays Hologram recording devices and techniques can be employed to produce wide-field-of-view holograms. In one embodiment, a specialized lens is used to couple an object beam into a holographic recording material without substantially changing the angle of incidence of t... | 07/17/2007 |
| 7241489 | Opaque flake for covert security applications Opaque flakes, such as pigment or bright flake used in paints and inks, have a selected shape and/or other indicia to provide a covert security feature to an object. In some embodiments the composition includes base pigment, and the opaque covert flakes match the vi... | 07/10/2007 |
| 7230205 | Compressor airfoil surface wetting and icing detection system In some instances, ice can form on the surface of a compressor airfoil. If the ice dislodges, it can impact and damage other compressor components. Aspects of the invention relate to systems for detecting the presence of ice or water on a compressor vane during engi... | 06/12/2007 |
| 7222524 | Method and apparatus for determining an optimal pumping rate based on a downhole dew point pressure determination The present invention provides a down hole spectrometer for determination of dew point pressure to determine an associated optimal pumping rate during sampling to avoid precipitation of asphaltenes in a formation sample. A sample is captured at formation pressure in... | 05/29/2007 |
| 7214274 | Method and apparatus for thermally insulating adjacent temperature controlled processing chambers A dual chamber apparatus including a first chamber and a second chamber which is configured to be coupled to the first chamber at an interface. Each of the first chamber and the second chamber has a transfer opening located at the interface. An insulating plate is l... | 05/08/2007 |
| 7201878 | Aerosol particle analyzer for measuring an analyte in airborne particles Aerosol particle analyzer (APA) for measuring an analyte in airborne particle is described. Airborne particles are first given an electrical charge and then drawn in air past an oppositely charged volume of an analysis liquid that exposed to the air at a small hole ... | 04/10/2007 |
| 7201879 | Aerosol into liquid collector for depositing particles from a large volume of gas into a small volume of liquid An aerosol-into-liquid collector (ALC) for collecting gas-borne particles from a large volume of gas such as air into a small volume of liquid is described. The ALC uses a linear quadrupole to concentrate particles flowing in a gas and to help direct these concentra... | 04/10/2007 |
| 7198073 | Methodology and apparatus for storing and dispensing liquid components to create custom formulations A methodology and apparatus comprises integral material reservoir cylinders which contain separate material bags in which reside a component required for a formulation, or alternate material reservoir containers, typically drums, with a component required for a form... | 04/03/2007 |
| 7193757 | Angle multiplexing holographic storage device and method In an angle multiplexing holographic storage device, a movable beam splitter is used for splitting a source beam into an object beam and a reference beam. An encoding device is used for encoding the object beam with pixel data. A parabolic reflector differentially r... | 03/20/2007 |
| 7153475 | Aerosol particle analyzer for measuring the amount of analyte in airborne particles Aerosol particle analyzer (APA) for measuring the amount of analyte in airborne particle is described. The APA uses an analysis liquid. In most embodiments, this analysis liquid is chosen so that when it is mixed with the particles, an optical property of the analys... | 12/26/2006 |
| 7125518 | Aerosol particle analyzer for measuring the amount of analyte in airborne particles Aerosol particle analyzer (APA) for measuring the amount of analyte in airborne particle is described. The APA uses an analysis liquid. When this analysis liquid is mixed with the particles, an optical property of the analysis liquid (CDAL) varies according to the a... | 10/24/2006 |
| 7006218 | Low temperature adaptor for evaporative light detection The present invention is directed to a system for converting between single flow and split flow evaporative light scattering detection devices for detecting samples in a mobile phase. Included in the system is a evaporative light scattering detection device, a low t... | 02/28/2006 |
| 7000454 | Particle measurement configuration and semiconductor wafer processing device with such a configuration A particle measurement configuration measures the particle concentration in a liquid or gaseous medium by way of a particle measuring instrument. In order to avoid erroneous measurements or damage to the particle measuring instrument, a measuring cell is provided wh... | 02/21/2006 |
| 6992315 | In situ combustion turbine engine airfoil inspection A system (10) for imaging a combustion turbine engine airfoil includes a camera (12) and a positioner (24). The positioner may be controlled to dispose the camera within an inner turbine casing of the engine at a first position for acquiring a f... | 01/31/2006 |
| 6980284 | Condensation particle counter A condensation particle counter measures the number of ultra-fine particles by growing the ultra-fine particles through a condensing process. The counter includes a capillary in which vapor of operating liquid is condensed and the ultra-fine particles grow. An insul... | 12/27/2005 |
| 6922603 | System and method for quantifying uniformity patterns for tool development and monitoring A system and method of determining multiple uniformity metrics of a semiconductor wafer includes quantitatively defining a location metric of a nonuniformity on the surface of the wafer. A quantity is measured at multiple locations on a top surface of the wafer and ... | 07/26/2005 |
| 6829044 | Compact, high-efficiency condensation nucleus counter A condensation nucleus counter has a series of flow passageways forming a flow path, including a first passageway for carrying the gas stream having the particles to be detected which is preferably preheated A saturator is positioned to receive the flow of the gas s... | 12/07/2004 |
| 6712881 | Continuous, laminar flow water-based particle condensation device and method An apparatus and method for producing a diffusive, continuous laminar flow for particle growth via condensation of vapors with a mass diffusivity near or higher than the thermal diffusivity of the surrounding gas. In an exemplary embodiment, the method uses the cond... | 03/30/2004 |
| 6643001 | Patterned platelets Patterned platelets are platelets made with specified shapes and sizes. The various sizes and shapes of the platelets are used to code articles and substances to which they are applied. The patterned platelets can be in inks or paints applied to articles.... | 11/04/2003 |
| 6639671 | Wide-range particle counter A wide range particle counter has sections which separately detect coarse and fine particles in an aerosol. The coarse particles are counted and sized in an optical particle counter. The fine particles are classified with a differential mobility analyzer ... | 10/28/2003 |
| 6567157 | Fast mixing condensation nucleus counter A fast mixing condensation nucleus counter useful for detecting particles entrained in a sample gas stream is provided. The fast mixing condensation nucleus counter comprises a detector and a mixing condensation device having a mixing chamber adapted to a... | 05/20/2003 |
| 6529272 | Techniques for characterizing cloud condensation nuclel A cloud condensation nucleus spectrometer having a streamwise segmented condensation nucleus growth column. The condensation nucleus growth column includes alternating hot and cold temperature-maintaining segments arranged next to one another. The tempera... | 03/04/2003 |
| 6498641 | Condensation nucleus counter with multi-directional fluid flow system A condensation nucleus counter (CNC) device implemented with a multi-directional fluid flow system is configured in a compact, conical geometry. A saturation region includes an inlet that delivers into an annular pool a sample stream of air containing sma... | 12/24/2002 |
| 6469780 | Apparatus and method for detecting particles in reactive and toxic gases An apparatus and a method are disclosed for detecting particles in a particle-containing gas at a pressure greater than about 0 psig. The apparatus includes a gas distribution line containing a pressurized gas having a pressure greater than about 0 psig a... | 10/22/2002 |
| 6469781 | Photoinduced nucleation: a novel tool for detecting molecules in air at ultra-low concentrations A method and apparatus for determining the presence of molecules in a gas at concentrations of less than about 100 ppb. Light having wavelengths in the range from about 200 nm to about 350 nm is used to illuminate a flowing sample of the gas causing the m... | 10/22/2002 |
| 6392745 | Method and apparatus for the fast detection of surface characteristics A method and apparatus for quickly detecting the surface characteristics of a surface, such as features, anomalies or contaminants are disclosed. The method and apparatus use heterogeneous condensation of a vapor on a surface and evaporation to reveal the... | 05/21/2002 |
| 6362880 | Low temperature adaptor for evaporative light detection The present invention is directed to a system for converting between single flow and split flow evaporative light scattering detection devices for detecting samples in a mobile phase. Included in the system is a evaporative light scattering detection devi... | 03/26/2002 |
| 6263744 | Automated mobility-classified-aerosol detector An aerosol detection system for measuring particle number distribution with respect to particle dimension in an aerosol sample. The system includes an alternating dual-bag sampler, a radially classified differential mobility analyzer, and a condensation n... | 07/24/2001 |
| 6229605 | Evaporative light scattering device The present invention is directed to a device for evaporative light scattering detection that can be used for a wide range of sample types and mobile phases. The device may be quickly converted between a single flow and a split flow configuration through ... | 05/08/2001 |
