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Class Information
Number: 73/31.03
Name: Measuring and testing > Gas analysis > Impurity
Description: Subject matter wherein the gas is being tested for undesirable content.

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8666666 System and a method for assessing and reducing air pollution by regulating airflow ventilation Mar. 4, 2014
8664004 Method for analysis of contaminants in a process fluid stream Mar. 4, 2014
8652409 Photoelectrocatalytic fluid analyte sensors including reference electrodes Feb. 18, 2014
8524181 Sensor-integrated device Sep. 3, 2013
8468872 Hydrogen sensor and method of manufacturing the same Jun. 25, 2013
8438904 Method and apparatus for vapor signature with heat differential May. 14, 2013
8438905 Method and apparatus for vapor signature with heat differential May. 14, 2013
8336402 Fluidically-assisted sensor systems for fast sensing of chemical and biological substances Dec. 25, 2012
8323982 Photoelectrocatalytic fluid analyte sensors and methods of fabricating and using same Dec. 4, 2012
8312759 Methods, devices, and systems for detecting properties of target samples Nov. 20, 2012
8281642 Environmental gas sensor and method of manufacturing the same Oct. 9, 2012
8278617 Cargo shipment security enclosure, method, system, and method of making Oct. 2, 2012
8272280 Apparatus and method of contaminant detection for food industry Sep. 25, 2012
8220312 Non-invasive method and system for screening the content of containers for the presence of threat substances Jul. 17, 2012
8190367 System and method for assessing and reducing air pollution by regulating airflow ventilation May. 29, 2012
8181505 Measurement system for the multidimensional aerosol characterization May. 22, 2012
8176768 Particulate matter detection device May. 15, 2012
8161797 Sampling device for low volatility hazardous chemicals Apr. 24, 2012
8127593 Method for detecting fungal contamination Mar. 6, 2012
8113035 Method for the detection of gaseous impurities in materials Feb. 14, 2012
8083862 Method and system for monitoring contamination on a substrate Dec. 27, 2011
8056395 Method for detecting a chemical substance Nov. 15, 2011
8047053 Mail parcel screening using multiple detection technologies Nov. 1, 2011
8033158 Systems and methods for residue collection with improved letter handling capability Oct. 11, 2011
8006542 Method for contaminant detection using an odor marker Aug. 30, 2011
7997119 Chemical sampling and multi-function detection methods and apparatus Aug. 16, 2011
7972865 Sensor for detecting and differentiating chemical analytes Jul. 5, 2011
7971470 Method for detecting chemical substances in whole, closed and/or sealed containers Jul. 5, 2011
7942033 Systems for the detection of trace vapors and particles in air May. 17, 2011
7931716 Handheld cleaning appliance Apr. 26, 2011
7913542 Isolated gas sensor configuration Mar. 29, 2011
7905154 Apparatus and method of contaminant detection for food industry Mar. 15, 2011
7895881 Apparatus for detection of chemical or biological substances and method for cleaning the apparatus Mar. 1, 2011
7886578 Sensor element for particle sensors and method for operating the sensor element Feb. 15, 2011
7824618 Sensor structure and method of fabricating the same Nov. 2, 2010
7793675 In-line gas purity monitoring and control system Sep. 14, 2010
7752887 Detection of impurities in gas streams Jul. 13, 2010
7669490 Apparatus and method for testing filters in a clean room Mar. 2, 2010
7665345 Gaseous product detecting device Feb. 23, 2010
7647813 Hydrogen sensor Jan. 19, 2010
7610794 Particle detection sensor, method for manufacturing particle detection sensor, and method for detecting particle using particle detection sensor Nov. 3, 2009
7587925 Method for operating a sensor for recording particles in a gas stream and device for implementing the method Sep. 15, 2009
7568376 Exhaust gas sensor Aug. 4, 2009
7543478 Device and method for detecting hazardous material in mail Jun. 9, 2009
7503204 Systems and methods for residue collection Mar. 17, 2009
7493816 Smoke detectors Feb. 24, 2009
7472612 Aerosol collection apparatus and method Jan. 6, 2009
7458248 Method and apparatus to detect genuine or hoax contaminants Dec. 2, 2008
7454952 Method and apparatus for monitoring mercury in a gas sample Nov. 25, 2008
7448252 Skids, modules, and modular system for monitoring hydrogen-cooled generators Nov. 11, 2008

1 2 3 4

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