ClassID:

167841

G01N2021/354 - 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 Hygrometry of gases

Recent Application in this class:
#1
20240151641
2024-05-09

WATER VAPOR DISTRIBUTION MEASUREMENT APPARATUS

#2
20200018694
2020-01-16

System and method for impurity detection in beverage grade gases

#3
20200003684
2020-01-02

Portable moisture analyzer for natural gas

#4
20190285747
2019-09-19

Room Occupancy Detector

#5
20190212260
2019-07-11

Method and device for monitoring the quality of gaseous media

#6
20180252639
2018-09-06

System and method for impurity detection in beverage grade gases

#7
20180238797
2018-08-23

Portable moisture analyzer for natural gas

#8
20180156726
2018-06-07

Optical absorbance measurements with self-calibration and extended dynamic range

#9
20150369736
2015-12-24

Dryness fraction distribution measuring device and dryness fraction distribution measuring method

#10
20150330868
2015-11-19

Exhaust gas analyzing apparatus

#11
20150293015
2015-10-15

Device and method for measuring the moisture in die casting molds

#12
20130321815
2013-12-05

Gas analysis device

#13
20130059395
2013-03-07

Humidity and temperature corrections to improve accuracy of HF ambient air monitors based on tunable diode laser IR absorption measurements

#14
20120310540
2012-12-06

SYSTEMS AND METHODS FOR ESTIMATING PHOTOSYNTHETIC CARBON ASSIMLATION

#15
20110304844
2011-12-15

Gas sensor and process for measuring moisture and carbon dioxide concentration

#16
20110032516
2011-02-10

Optical absorbance measurements with self-calibration and extended dynamic range

#17
20080225296
2008-09-18

Pressure-invariant trace gas detection

#18
20080123712
2008-05-29

Measuring water vapor in high purity gases

#19
20070069132
2007-03-29

Measurement of steam quality using multiple broadband lasers

#20
20070069131
2007-03-29

Apparatus and method for measuring steam quality

#21
20070045543
2007-03-01

System and method for detecting water vapor within natural gas

#22
20070034802
2007-02-15

System and method for detecting water vapor within natural gas

#23
20060192967
2006-08-31

Method and apparatus for trace gas detection

#24
15835903
2020-08-11

Trace moisture analyzer instrument, gas sampling and analyzing system, and method of detecting trace moisture levels in a gas