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| Number | Title | Issue Date |
| 7987695 | Particulate monitor A particulate monitor includes a housing, an air-moving device coupled to the housing, and an air passageway disposed at least partially within the housing. The air-moving device is operable to create an airflow through the air passageway. The particulate monitor ma... | 08/02/2011 |
| 7721589 | Automated system for impactor testing One aspect of the invention provides an automated system for performing repeated testing using an impactor which comprises a cup manifold defining multiple impaction cups, an impactor head defining transfer passages, and a nozzle manifold which defines multiple nozz... | 05/25/2010 |
| 7364917 | Apparatus and method for detecting vaporized gas For detecting a component of a substance (of liquid or solid) on a front surface of a substrate, the substrate with the substance thereon is transferred into a vaporizing section, the substance is heated in the vaporizing section so that the component is vaporized f... | 04/29/2008 |
| 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 |
| 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 |
| 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 |
| 7265669 | Networks with sensors for air safety and security Airborne particles are impacted on a collection surface, analyzed, and then the collection surface is regenerated. Thus, the same collection surface can be used in numerous cycles. The analysis can be focused on one or more properties of interest, such as the concen... | 09/04/2007 |
| 7205145 | Gas-borne matter collection device A device for collecting viable gas-borne matter includes an inlet and an outlet and a plate provided intermediate the inlet and the outlet and having a first surface facing the inlet and a second surface facing the outlet. A substance is provided on the first surfac... | 04/17/2007 |
| 7159446 | Particulate matter concentration measuring apparatus A highly sensitive particulate matter concentration measuring apparatus for measuring a concentration of particulate matter in a sample gas collected in a collecting region formed on a collecting medium, the collecting region being formed by drawing the sample gas t... | 01/09/2007 |
| 7152457 | Impactor a frame part for an impactor a part to be used in an impactor and a method for processing elements belonging to the impactor An impactor, a frame part for an impactor, a part to be used in an impactor, and a method for processing elements belonging to the impactor. Different elements belonging to different stages of the impactor are coupled to each other with a connecting element in such ... | 12/26/2006 |
| 7135060 | Particle collection apparatus and method A particle collector comprises a housing defining an enclosed chamber. An inlet opening in the housing provides fluid communication between a source of gas and particles and the chamber and an outlet opening provides fluid communication between the chamber and the e... | 11/14/2006 |
| 7113277 | System and method of aerosolized agent capture and detection System and method of aerosolized agent detection. Multi-part collection tape is employed for capturing particles of interest for immediate analysis and optional forensic preservation and recording information related to capture and subsequent real-time analysis. Las... | 09/26/2006 |
| 7082811 | Cascade impactor with individually driven impactor plates A cascade impactor apparatus has a series of vertically stacked impactor housing sections. Each of the impactor housing sections has an upper portion that supports a motor for driving an impactor plate that is positioned below a nozzle through which flow passes. Eac... | 08/01/2006 |
| 7073402 | Air sampler with parallel impactors An air sampler is designed for a predetermined flow rate. The air flow is admitted to at least two impactors operating in parallel. Preferably the inlet nozzles and the outlet orifices of each impactor are sized to achieve predetermined cut-off sizes of particles; p... | 07/11/2006 |
| 7029921 | Apparatus for rapid measurement of aerosol bulk chemical composition An apparatus for continuous on-line measurement of chemical composition of aerosol particles with a fast time resolution is provided. The apparatus includes an enhanced particle size magnifier for producing activated aerosol particles and an enhanced collection devi... | 04/18/2006 |
| 7028535 | System and method for detecting and measuring liquid carry over in a gas stream A system for automatically detecting liquid carry over in a gas stream includes a sample line communicated with the gas stream for separating a sample of the gas stream; and an impactometer positioned along the line for being impacted by the sample, and for generati... | 04/18/2006 |
| 6990846 | Impactor inlet An impactor inlet for a system for monitoring an aerosol including a plurality of particles is provided. Each of the particles has a size. The inlet includes a housing defining a chamber to receive and direct a flow of the aerosol. A high flow rate nozzle receives t... | 01/31/2006 |
| 6964190 | Particulate matter concentration measuring apparatus A highly sensitive particulate matter concentration measuring apparatus for measuring a concentration of particulate matter in a sample gas collected in a collecting region formed on a collecting medium, the collecting region being formed by drawing the sample gas t... | 11/15/2005 |
| 6938777 | Method for removing surface deposits of concentrated collected particles A method and apparatus for removing concentrated spots of collected particulates from an impact collection surface, and transferring those particulates into a container suitable for preparing a liquid sample. A jet of fluid can be utilized to remove and transfer the... | 09/06/2005 |
| 6829919 | High-quality continuous particulate matter monitor A system for monitoring an aerosol including a plurality of particles is provided. Each of the particles has a size. The system includes an impactor assembly to receive the aerosol at a first flow rate and remove an exhaust portion of the particles that are less tha... | 12/14/2004 |
| 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 |
| 6779380 | Measuring system for the control of residual dust in safety vacuum cleaners A safety vacuum cleaner including a measuring system for residual dust monitoring, including a housing having an air passage with an inlet, an outlet, and a flow cross section. A turbine is disposed within the air passage and is rotatable to move an air stream throu... | 08/24/2004 |
| 6732569 | System and method for collecting samples of atmospheric aerosol particles for near-real time analysis A system and method for collecting sub-hourly ambient particulate matter samples at flow rates of 170-260 L/min is suitable for either on- or off-line near-real-time multielement analysis by graphite furnace atomic absorption spectrometry and other techniques for wh... | 05/11/2004 |
| 6692553 | Particle collection apparatus and method A particle collector comprises a housing defining an enclosed chamber. An inlet opening in the housing provides fluid communication between a source of gas and particles and the chamber and an outlet opening provides fluid communication between the chambe... | 02/17/2004 |
| 6685759 | Cascade impactor and jet plate for same A sampling system and method for sampling particulate matter from a high-temperature, high-pressure gas stream. A cyclone sampler for use at high temperatures and pressures, and having threadless sacrificial connectors is disclosed. Also disclosed is an i... | 02/03/2004 |
| 6647758 | Method and apparatus for verifying integrity of cascade impactors An impactor assembly comprises a base for supporting a plurality of cups that form impactor plates, and a nozzle above each of the cups through which a flow passes for classification. The cover is removable, and a test cover can be put into position for m... | 11/18/2003 |
| 6594001 | Pollen grain-counting method and pollen grain counter Provided is a method and apparatus which enable only pollen existing in the atmosphere to be automatically quantified. According to the method and apparatus, particles other than those substantially smaller than pollen grains, contained in a given amount ... | 07/15/2003 |
| 6565638 | Portable air-borne bacteria sampler After supporting a petri dish S having a culture medium K contained therein with a given thickness on a petri dish holder 17 of a housing 14, a nozzle holder 13 is clamped at a top of the housing 14. When a motor 19 is energized to rotate a high static pr... | 05/20/2003 |
| 6510727 | Arrangement for the quantitative and qualitative analysis of particles in gases An arrangement is described for the quantitative and qualitative analysis of particles in gases, especially of particles in the exhaust gas of internal combustion engines, comprising a vibrating system with at least one vibration sensor, preferably a piez... | 01/28/2003 |
| 6472203 | Combination air sampling cassette and nutrient media dish A combination air sampling cassette and nutrient media dish having base, orifice plate, and nutrient media dish assembly for the collection of airborne particles. The orifice plate includes a plurality of holes that brings the nutrient media dish into flu... | 10/29/2002 |
| 6431014 | High accuracy aerosol impactor and monitor An aerosol impactor and monitor has a plurality of impactor stages, each of which will receive an aerosol and classify the aerosol according to particle size. The impactor stages have nozzle plates and impaction plates that reduce the effects of cross flo... | 08/13/2002 |
| 6402817 | Low pressure drop, multi-slit virtual impactor Fluid flow is directed into a multiplicity of slit nozzles positioned so that the fluid flow is directed into a gap between the nozzles and (a) a number of receiving chambers and (b) a number of exhaust chambers. The nozzles and chambers are select so tha... | 06/11/2002 |
| 6386015 | Apparatus to collect, classify, concentrate, and characterize gas-borne particles An aerosol lab-on-a-chip (ALOC) integrates one or more of a variety of aerosol collection, classification, concentration (enrichment), and characterization processes onto a single substrate or layered stack of such substrates. By taking advantage of moder... | 05/14/2002 |
| 6342388 | Culture medium container, with integrated geometry for air suction and air conduction, for the purpose of air bacteria analysis A container for a culture medium having a dish and a lid, and having an integrated geometry for air suction and air conduction. The container being adapted for analysis of air bacteria according to the impaction method. An adapted cascade connecting hood,... | 01/29/2002 |
| 6294375 | Microbiological pressurised gas control device A device for microbiologically controlling a dust-laden pressurized gas, including dust collecting device in an inner cavity provided with a gas inlet and a gas outlet and having an internal pressure that is equal to the pressure of said dust-laden gas at... | 09/25/2001 |
| 6284025 | Particle microtrap screen A particle microtrap screen apparatus has an inlet, a jet orifice screen with multiple microjet orifices, and a microtrap plate having multiple microtraps spaced opposite the multiple microjet orifices for entrapping particles entrained by the jets and th... | 09/04/2001 |
| 6240768 | Sampling method and sampling apparatus for the microbiological analysis of air A method and apparatus for sampling microorganisms from the air is disclosed. The speed at which the sample is placed on to a growth medium is controlled, such as by controlling the speed of the turbine of the device, so as to compensate for any drying of... | 06/05/2001 |
| 6156212 | Opposed-flow virtual cyclone for particle concentration An opposed-flow virtual cyclone for aerosol collation which can accurately collect, classify, and concentrate (enrich) particles in a specific size range. The opposed-flow virtual cyclone is a variation on the virtual cyclone and has its inherent advantag... | 12/05/2000 |
| 5932795 | Methods and apparatus for continuous ambient particulate mass monitoring Methods and apparatus for the continuous monitoring of ambient particulate mass in a gas sample encompassing the monitoring of PM10, (particulate matter greater than 10 μm) and coarse particles (2.5 to 10 μm), the determination of the size di... | 08/03/1999 |
| 5932818 | Near real time vapor detection and enhancement using aerosol adsorption A vapor sample detection method where the vapor sample contains vapor and ambient air and surrounding natural background particles. The vapor sample detection method includes the steps of generating a supply of aerosol that have a particular effective med... | 08/03/1999 |
