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Class Information
Number: 250/339.13
Name: Radiant energy > Invisible radiant energy responsive electric signalling > Infrared responsive > With selection of plural discrete wavelengths or bands > With radiation source > Using sample absorption for chemical composition analysis > With gaseous sample
Description: Subject matter wherein a sample is in a gaseous state.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7449694 |
Gas sensor |
Nov. 11, 2008 |
| 7446317 |
Multipass cell for gas analysis using a coherent optical source |
Nov. 4, 2008 |
| 7420171 |
Gas sensors |
Sep. 2, 2008 |
| 7358489 |
Ultra low cost NDIR gas sensors |
Apr. 15, 2008 |
| 7354553 |
Method and apparatus for detecting the presence of elemental mercury in a gas sample |
Apr. 8, 2008 |
| 7342229 |
Spectroscopic signal processing methodology |
Mar. 11, 2008 |
| 7339168 |
System and method for detecting water vapor within natural gas |
Mar. 4, 2008 |
| 7323687 |
infrared gas analyzer and infrared gas analysis method |
Jan. 29, 2008 |
| 7312452 |
Mobile remote detection device and remote detection method for methane gas accumulations |
Dec. 25, 2007 |
| 7294839 |
Low volume sample cell and gas monitoring system using same |
Nov. 13, 2007 |
| 7285782 |
Infrared sensor with explosion-proof protection for gas metering appliances |
Oct. 23, 2007 |
| 7268351 |
Gas sensor module for the spectroscopic measurement of a gas concentration |
Sep. 11, 2007 |
| 7259374 |
Method for detecting a gas species using a super tube waveguide |
Aug. 21, 2007 |
| 7253413 |
Gas identification system |
Aug. 7, 2007 |
| 7244936 |
Chemical species detection including a multisection laser for improved process monitoring |
Jul. 17, 2007 |
| 7214939 |
Ultra low power NDIR carbon dioxide sensor fire detector |
May. 8, 2007 |
| 7208737 |
Photoacoustic detector |
Apr. 24, 2007 |
| 7186979 |
Passive NDIR carbon dioxide sensor fire detector |
Mar. 6, 2007 |
| 7183553 |
Gas detection method and gas detection device |
Feb. 27, 2007 |
| 7176460 |
Passive NDIR gas sensor fire detector |
Feb. 13, 2007 |
| 7166842 |
Gas sensor arrangement with reduced settling time |
Jan. 23, 2007 |
| 7161677 |
Condensation sensor and method of controlling condensate film in sealed space with condensation sensor |
Jan. 9, 2007 |
| 7157045 |
Infrared monitor and control for vapor hydrogen peroxide processing techniques |
Jan. 2, 2007 |
| 7140231 |
Evolved gas analyzing method and apparatus |
Nov. 28, 2006 |
| 7141793 |
Remove vehicle emission sensing device with single detector |
Nov. 28, 2006 |
| 7132661 |
System and method for detecting water vapor within natural gas |
Nov. 7, 2006 |
| 7132658 |
Detection assembly and measuring arrangement for multigas analyzers |
Nov. 7, 2006 |
| 7132657 |
Infrared gas detector |
Nov. 7, 2006 |
| 7126122 |
Method for determining the safety of gas mixtures |
Oct. 24, 2006 |
| 7119337 |
Infrared radiation sources, sensors and source combinations, and methods of manufacture |
Oct. 10, 2006 |
| 7112447 |
Hand held gas analyzer |
Sep. 26, 2006 |
| 7102132 |
Process monitoring using infrared optical diagnostics |
Sep. 5, 2006 |
| 7084963 |
Method and device for the comprehensive characterization and monitoring of exhaust gases and the regulation of engines in particular internal combustion engines and components for the treatmen |
Aug. 1, 2006 |
| 7071470 |
Multi-component analyzing apparatus |
Jul. 4, 2006 |
| 7067813 |
Infrared absorption measurement method, infrared absorption measurement device, and method of manufacturing semiconductor device |
Jun. 27, 2006 |
| 7057175 |
Infrared absorption measurement method, infrared absorption measurement device, and method of manufacturing semiconductor device |
Jun. 6, 2006 |
| 7034304 |
Chamber for gas detector |
Apr. 25, 2006 |
| 7022992 |
Method and apparatus for real-time monitoring of furnace flue gases |
Apr. 4, 2006 |
| 7005645 |
Apparatus and methods for launching and receiving a broad wavelength range source |
Feb. 28, 2006 |
| 6967329 |
Radiation detector, arrangement and method for measuring radioactive radiation, where continuous low-energy background noise is reduced |
Nov. 22, 2005 |
| 6940083 |
Isotopic gas analyzer and method of judging absorption capacity of carbon dioxide absorbent |
Sep. 6, 2005 |
| 6927393 |
Method of in situ monitoring of supercritical fluid process conditions |
Aug. 9, 2005 |
| 6903329 |
Cooled mounting for light detector |
Jun. 7, 2005 |
| 6888127 |
Method and apparatus for performing rapid isotopic analysis via laser spectroscopy |
May. 3, 2005 |
| 6875399 |
Non-dispersive mid-infrared sensor for vaporized hydrogen peroxide |
Apr. 5, 2005 |
| 6872947 |
MEMS-based spectrophotometric system |
Mar. 29, 2005 |
| 6844554 |
Method and arrangement for determining the concentration of a gas component in a gas mixture |
Jan. 18, 2005 |
| 6833922 |
Optical path structure for open path emissions sensing with opposed sources |
Dec. 21, 2004 |
| 6803577 |
Quantitative imaging of gas emissions utilizing optical techniques |
Oct. 12, 2004 |
| 6803578 |
Method for identification and partial-pressure determination of two gases in an unknown anesthesia gas mixture |
Oct. 12, 2004 |
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