Patents-Review.com
ClassID:

167842 ⎘

G01N2021/3545 - CPC Classification

Classification description:

Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light; Systems in which incident light is modified in accordance with the properties of the material investigated; Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands; Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infra-red light for analysing gases, e.g. multi-gas analysis Disposition for compensating effect of interfering gases

Recent Application in this class:
#1
20260133122
2026-05-14

Inverse Backscatter Absorption Gas Imaging

 #2
20260029338
2026-01-29

Gas Measurement Device

 #3
20230194419
2023-06-22

Monitoring gas impurities with total sulfur detection

 #4
20230168189
2023-06-01

Electrically modulated light source, non-dispersive infrared spectrum detection system and method for detecting gas using the same

 #5
20210285870
2021-09-16

Gas detection apparatus

 #6
20190302013
2019-10-03

Multi-spectral gas quantification and differentiation method for optical gas imaging camera

 #7
20190113447
2019-04-18

Estimation of water interference for spectral correction

 #8
20190041317
2019-02-07

Method for quantifying the amount of optically interfering gas impurities

 #9
20180321141
2018-11-08

Leaked gas detection device and leaked gas detection method

 #10
20180149586
2018-05-31

Gas analysis apparatus and gas analysis method

 #11
20160132617
2016-05-12

Target analyte detection and quantification in sample gases with complex background compositions

 #12
20160033394
2016-02-04

Estimation of water interference for spectral correction

 #13
20120185179
2012-07-19

Reactive gas detection in complex backgrounds

 #14
20120091346
2012-04-19

NDIR-two Beam Gas Analyser And Method For Determining The Concentration Of A Measuring Gas Component in a Gas Mixture by means of Said type of Gas Analyser

 #15
20110093215
2011-04-21

Reactive gas detection in complex backgrounds

 #16
20100201989
2010-08-12

Reactive gas detection in complex backgrounds

 #17
20080255769
2008-10-16

Reactive gas detection in complex backgrounds

 #18
20080223109
2008-09-18

Gas Concentration Measuring Method, Program and Apparatus With Determination of Erroneous Detection

 #19
20080035848
2008-02-14

Ultra-high sensitivity NDIR gas sensors

 #20
20060192967
2006-08-31

Method and apparatus for trace gas detection

 #21
20060065860
2006-03-30

Apparatus for monitoring engine exhaust

 #22
20050240115
2005-10-27

Sample conditioning and environmental control techniques for gas sensor