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Class Information
Number: 73/24.02
Name: Measuring and testing > Gas analysis > By vibration > Produced by radiant energy
Description: Subject matter wherein the vibration is produced by energy in the form of electromagnetic waves or traveling subatomic, atomic or molecular particles.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7586611 |
Method and apparatus for analysis of semiconductor materials using photoacoustic spectroscopy techniques |
Sep. 8, 2009 |
| 7493816 |
Smoke detectors |
Feb. 24, 2009 |
| 7398672 |
System and method for gas analysis using photoacoustic spectroscopy |
Jul. 15, 2008 |
| 7365352 |
Gas concentration flux measuring device |
Apr. 29, 2008 |
| 7360397 |
Detector with condenser |
Apr. 22, 2008 |
| 7345766 |
Measuring chamber for photo-acoustical sensors |
Mar. 18, 2008 |
| 7316151 |
Apparatus and method for accurate, real-time measurement of pipeline gas |
Jan. 8, 2008 |
| 7263871 |
System and method for gas analysis using doubly resonant photoacoustic spectroscopy |
Sep. 4, 2007 |
| 7243548 |
Surface wave chemical detector using optical radiation |
Jul. 17, 2007 |
| 7242479 |
Gas sensors |
Jul. 10, 2007 |
| 7238238 |
Gasification monitor, method for detecting mist, film forming method and film forming apparatus |
Jul. 3, 2007 |
| 7168292 |
Apparatus for particulate matter analysis |
Jan. 30, 2007 |
| 7106445 |
Photoacoustic gas sensor utilizing diffusion |
Sep. 12, 2006 |
| 7089781 |
Detector with condenser |
Aug. 15, 2006 |
| 7091869 |
Optoacoustic measuring arrangement and use thereof |
Aug. 15, 2006 |
| 7069769 |
Ultraviolet photoacoustic ozone detection |
Jul. 4, 2006 |
| 7034943 |
Gas sensors |
Apr. 25, 2006 |
| 6969849 |
Mass spectrometer for entrained particles, and method for measuring masses of the particles |
Nov. 29, 2005 |
| 6843102 |
Gas sensor arrangement |
Jan. 18, 2005 |
| 6694799 |
Method and apparatus for detection of particles |
Feb. 24, 2004 |
| 6662627 |
Photoacoustic instrument for measuring particles in a gas |
Dec. 16, 2003 |
| 6408681 |
Single particle photoacoustic absorption spectrometer |
Jun. 25, 2002 |
| 6378372 |
Acoustic resonance analysis of gas mixtures |
Apr. 30, 2002 |
| 6363772 |
System and method for detection of a biological condition |
Apr. 2, 2002 |
| 6341521 |
Process and device for measuring the amount of impurities in a gas sample to be analyzed |
Jan. 29, 2002 |
| 6327896 |
Photo-acoustic leak detection system |
Dec. 11, 2001 |
| 6244101 |
Photoacoustic method for measuring concentration of chemical species |
Jun. 12, 2001 |
| 6212939 |
Uncoated microcantilevers as chemical sensors |
Apr. 10, 2001 |
| 6202470 |
System and method for isotope ratio analysis and gas detection by photoacoustics |
Mar. 20, 2001 |
| 6148658 |
System and method for isotope ratio analysis and gas detection by photoacoustics |
Nov. 21, 2000 |
| 6119510 |
Process for determining characteristics of suspended particles |
Sep. 19, 2000 |
| 6107627 |
Apparatus for analysis of mixed gas components |
Aug. 22, 2000 |
| 6089076 |
System to control the power of a beam |
Jul. 18, 2000 |
| 6082178 |
Photoacoustic gas detector |
Jul. 4, 2000 |
| 6067840 |
Method and apparatus for infrared sensing of gas |
May. 30, 2000 |
| 6012325 |
Method and apparatus for measuring metallic impurities contained within a fluid |
Jan. 11, 2000 |
| 6006585 |
Optoacoustic gas sensor |
Dec. 28, 1999 |
| 5945592 |
System and method for isotope ratio analysis and gas detection by photoacoustics |
Aug. 31, 1999 |
| 5913234 |
Spectroscopic method and apparatus |
Jun. 15, 1999 |
| 5900533 |
System and method for isotope ratio analysis and gas detection by photoacoustics |
May. 4, 1999 |
| 5886249 |
Micromachined integrated opto-flow gas/liquid sensor |
Mar. 23, 1999 |
| 5869749 |
Micromachined integrated opto-flow gas/liquid sensor |
Feb. 9, 1999 |
| 5834632 |
Photo-acoustic leak detector with multiple beams |
Nov. 10, 1998 |
| 5824884 |
Photo-acoustic leak detector with baseline measuring |
Oct. 20, 1998 |
| 5824881 |
Gas/fluid detector for contained fluid systems |
Oct. 20, 1998 |
| 5792665 |
Oxygen sensing method and hand held analyzer therefore |
Aug. 11, 1998 |
| 5777205 |
Apparatus for analysis of mixed gas components |
Jul. 7, 1998 |
| 5753797 |
Photo-acoustic gas sensor and its manufacture and use |
May. 19, 1998 |
| 5691465 |
Multi-plate thin film carbon monoxide sensor |
Nov. 25, 1997 |
| 5616826 |
Photoacoustic analyzer and method |
Apr. 1, 1997 |
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