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Class Information
Number: 73/23.2
Name: Measuring and testing > Gas analysis
Description: Subject matter comprising a process or an apparatus for detecting or measuring the composition of, or some constituent of, a gas or gaseous mixture.










Sub-classes under this class:

Class Number Class Name Patents
73/31.01 Ambient air 135
73/23.3 Breath analysis 270
73/25.01 By thermal property 148
73/24.01 By vibration 260
73/30.01 Density or specific gravity 46
73/31.05 Detector detail 728
73/23.35 Gas chromatography 320
73/23.31 Gas of combustion 854
73/31.03 Impurity 179
73/29.01 Moisture content or vapor pressure 291
73/23.34 Odor 147
73/31.07 Particular separator 129
73/31.04 Pressure 86
73/28.01 Solid content of gas 309
73/23.21 With compensation detail (for error or drift correction, etc.) 159


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Patent Number Title Of Patent Date Issued
8691071 Coulometric analyte sensing instrument with an analyte-consuming sensor in a closed cell Apr. 8, 2014
8673649 Wireless chemical sensor and sensing method for use therewith Mar. 18, 2014
8656756 Gas sensor Feb. 25, 2014
8656793 State of charge indicator and methods related thereto Feb. 25, 2014
8650932 Sensor system with close-loop-adsorption circulation Feb. 18, 2014
8652409 Photoelectrocatalytic fluid analyte sensors including reference electrodes Feb. 18, 2014
8642100 Method to evaluate the quantity of methane produced by a dairy ruminant and method to reduce and control this quantity Feb. 4, 2014
8629770 Sensor for container monitoring system Jan. 14, 2014
8626451 Method and device for characterization and sensing of exhaust gas and control of engines and components for aftertreatment of exhaust gases Jan. 7, 2014
8623189 Electrochemical gas sensor with an ionic liquid electrolyte system including at least one monoalkylammonium, dialkylammonium, or trialkylammonium cation Jan. 7, 2014
8614582 Method of simultaneously screening a plurality of people Dec. 24, 2013
8610588 Detection of CO.sub.2 leakage in a container Dec. 17, 2013
8609026 Conversion of nitrogen dioxide (NO.sub.2) to nitric oxide (NO) Dec. 17, 2013
8609025 Single walled carbon nanotubes with functionally adsorbed biopolymers for use as chemical sensors Dec. 17, 2013
8592755 Method of switching ports of a switching valve of a gas chromatography-mass spectrometry apparatus Nov. 26, 2013
8586383 Device and method for detection of harmful substances Nov. 19, 2013
8584509 Environmental monitoring system and method with a prefilter Nov. 19, 2013
8584505 Measuring instrument and method for detecting the content of oil, hydrocarbons and oxidizable gases in air or compressed air Nov. 19, 2013
8584504 Ammonia concentration detection sensor Nov. 19, 2013
8578758 Gas sensor and method for production thereof Nov. 12, 2013
8578781 Device to indicate critical corrosion of a metallic structure Nov. 12, 2013
8573030 Gas sensors, methods of preparation thereof, methods of selecting gas sensor materials, and methods of use of gas sensors Nov. 5, 2013
8567234 Gas sensor Oct. 29, 2013
8571296 Method of testing the integrity of spiral wound modules Oct. 29, 2013
8555727 Integrated vacuum gauge and regulator Oct. 15, 2013
8543340 Self-adjusting electrochemical sensor Sep. 24, 2013
8537020 Visual indicator of gas sensor impairment Sep. 17, 2013
8528383 Pressure sensor using gas/liquid interface Sep. 10, 2013
8524181 Sensor-integrated device Sep. 3, 2013
8516878 Dual fuel heater Aug. 27, 2013
8516879 Gas sensor output base supporting a circuit board Aug. 27, 2013
8499612 Hydrogen gas detection using single palladium nanowires Aug. 6, 2013
8500849 Reactive gas detection in complex backgrounds Aug. 6, 2013
8493223 Safety monitoring system Jul. 23, 2013
8490465 Method for the on-board functional diagnosis of a soot sensor in a motor vehicle and/or for the detection of further constituents in the soot Jul. 23, 2013
8485019 Methods and systems for analysis, reporting and display of environmental data Jul. 16, 2013
8481470 Apparatus and method of washed hand and object detection Jul. 9, 2013
8468872 Hydrogen sensor and method of manufacturing the same Jun. 25, 2013
8466799 Apparatus for detecting carbon dioxide concentration in unsaturated zone, and carbon dioxide concentration monitoring method Jun. 18, 2013
8459097 Method and control unit for detecting a gas concentration of gas from a gas mixture Jun. 11, 2013
8455261 Detection of halogens Jun. 4, 2013
8450725 Semiconductor tranducer and its use in a sensor for detecting electron-donor or electron-acceptor species May. 28, 2013
8443652 Fluid detector May. 21, 2013
8424292 Systems and apparatus relating to the monitoring and/or controlling of selective catalytic reduction processes Apr. 23, 2013
8418377 Dryer with heat pump Apr. 16, 2013
8413482 Sensor Apr. 9, 2013
8416091 Sniffing probe Apr. 9, 2013
8402812 Gas concentration detection apparatus Mar. 26, 2013
8381574 Reduction of pressure induced temperature influence on the speed of sound in a gas Feb. 26, 2013
8373568 Detector system and method to detect or determine a specific gas within a gas mixture Feb. 12, 2013

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20










 
 
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