ClassID:

167855

G01N2021/391 - 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 tunable lasers Intracavity sample

Recent Application in this class:
#1
20260098804
2026-04-09

Gas Absorption Spectroscopic Instrument

#2
20250164392
2025-05-22

Tunable laser spectroscopy system with gas line resolution

#3
20250093259
2025-03-20

PURGE-FREE OPEN-PATH SYSTEM AND METHOD FOR CAVITY ENHANCED SPECTROSCOPY

#4
20240328941
2024-10-03

Multispecies Measurement Platform Using Absorption Spectroscopy for Measurement of Co-Emitted Trace Gases

#5
20240219298
2024-07-04

QUANTIFICATION OF TARGET ANALYTE BASED ON MULTI-LAYER MULTI-VARIANT SPECTRA ANALYSIS FOR SPECTROSCOPIC ANALYZERS

#6
20240175815
2024-05-30

APPARATUS FOR QUANTITATIVELY DETECTING ISOTOPOLOGUE OF CARBON DIOXIDE USING DUAL-PHOTON ABSORPTION AND SPECTROMETER

#7
20240044788
2024-02-08

CAVITY ENHANCED OPTICAL MICROSCOPY

#8
20230417597
2023-12-28

SYSTEMS AND METHODS FOR MEASURING TRACE CONTAMINANTS IN GAS MATRIX USING INTEGRATED CAVITY OUTPUT SPECTROSCOPY

#9
20230393064
2023-12-07

METHOD AND APPARATUS FOR MEASUREMENT OF AN ANALYTE

#10
20230288328
2023-09-14

LASER GAS ANALYZER

#11
20230251191
2023-08-10

Use of gradient-index lenses for cavity enhanced absorption spectroscopy

#12
20220326150
2022-10-13

Trace gas detection with 2-photon, 2-color, cavity ring-down spectroscopy

#13
20220307972
2022-09-29

Apparatus and method for quantitative detection of gases

#14
20210364427
2021-11-25

Multispecies measurement platform using absorption spectroscopy for measurement of co-emitted trace gases

#15
20210356392
2021-11-18

Method and system for analyzing a sample desorbed at different temperatures using cavity ring-down spectroscopy, and a method for generating a predictive model

#16
20210349068
2021-11-11

Fluid sensing systems and methods

#17
20210148814
2021-05-20

Resonant cavity system

#18
20200319101
2020-10-08

Tunable light source cavity detection using a plurality of axial-plus-transverse modes

#19
20200319100
2020-10-08

Method and system for analyzing a sample using cavity ring-down spectroscopy, and a method for generating a predictive model

#20
20200319099
2020-10-08

Method of tuning a resonant cavity, and cavity ring-down spectroscopy system

#21
20200319093
2020-10-08

Cavity ring-down spectroscopy system and method of modulating a light beam therein

#22
20200319028
2020-10-08

Spectroscopy system and method of performing spectroscopy

#23
20200209152
2020-07-02

Dissolved gas analysis devices, systems, and methods

#24
20190360931
2019-11-28

Optical cell and gas analyzer

#25
20190296519
2019-09-26

Laser system with optical feedback

#26
20190113443
2019-04-18

MULTI-PASSAGE PHOTOACOUSTIC DEVICE FOR DETECTING GAS

#27
20190086329
2019-03-21

Tunable light source cavity detection using a plurality of axial-plus-transverse modes

#28
20190011361
2019-01-10

Fluid analyzer

#29
20180275049
2018-09-27

Method for measuring the concentration of trace gases by SCAR spectroscopy

#30
20180275048
2018-09-27

Gas cell based on hollow-core photonic crystal fiber and its application for the detection of greenhouse gas: nitrous oxide

#31
20180259444
2018-09-13

Dissolved gas analysis devices, systems, and methods

#32
20180252641
2018-09-06

Method and apparatus for the spectroscopic detection of low concentrations of hydrogen sulfide gas

#33
20180233877
2018-08-16

Generating laser pulses and spectroscopy using the temporal talbot effect

#34
20180059013
2018-03-01

Laser-based IR spectroscopy for measuring sulfur trioxide in the exhaust gas of gas power plants

#35
20170160527
2017-06-08

Elongating a travel path of a light beam by an optical delay device

#36
20170067822
2017-03-09

Cavity enhanced spectroscopy using off-axis paths

#37
20160327543
2016-11-10

METHOD FOR CONTINUOUSLY MONITORING CHEMICAL OR BIOLOGICAL PROCESSES

#38
20160041031
2016-02-11

Systems and methods for controlling the optical path length between a laser and an optical cavity

#39
20160011101
2016-01-14

Spectroscopic quantification of extremely rare molecular species in the presence of interfering optical absorption

#40
20150377704
2015-12-31

Devices, methods, and systems for cavity-enhanced spectroscopy

#41
20150355086
2015-12-10

Frequency comb spectroscopy apparatus and method of frequency comb spectroscopy

#42
20140176951
2014-06-26

Multi-band multiplexing intra-cavity gas sensing system and method

#43
20140160336
2014-06-12

Lens-free planar imager using an optical resonator

#44
20140110599
2014-04-24

Adaptable cell design for a spectroscopy apparatus

#45
20130335728
2013-12-19

System and method for monitoring unsaturated zone gas and near-surface atmosphere in real time by using isotope analyzer

#46
20120194804
2012-08-02

SEMICONDUCTOR LASER BASED INTRA-CAVITY OPTICAL MICRO-FLUIDIC BIOSENSOR

#47
20110317165
2011-12-29

Beam intensity detection in a cavity ring down sensor

#48
20110302992
2011-12-15

Apparatus for measurement of gas concentrations in breath

#49
20110197654
2011-08-18

System and method for fluid sample analysis having a laser with a port for controlling access to an extended cavity

#50
20100315642
2010-12-16

Spectroscopic detection system and method

#51
20100242572
2010-09-30

WAVELENGTH MODULATION SPECTROSCOPY FOR SIMULTANEOUS MEASUREMENT OF TWO OR MORE GAS INGREDIENTS

#52
20100188661
2010-07-29

Multiple beam wide band CRDS cavity sensor and detector

#53
20100002234
2010-01-07

Apparatus and method for rapid and accurate quantification of an unknown, complex mix

#54
20090323055
2009-12-31

CRDS BREWSTER GAS CELL

#55
20090059234
2009-03-05

Hollow waveguide cavity ringdown spectroscopy

#56
20080196477
2008-08-21

Photo-acoustic spectrometer apparatus

#57
20080186504
2008-08-07

Obtaining information about analytes using optical cavity output light

#58
20080186503
2008-08-07

Photosensing optical cavity output light

#59
20080186488
2008-08-07

Distinguishing objects

#60
20080151248
2008-06-26

Spectroscopy method and apparatus for detecting low concentration gases

#61
20070242266
2007-10-18

Cavity ring-down spectrometer having mirror isolation

#62
20060268260
2006-11-30

Cell analysis using laser with external cavity

#63
20060183241
2006-08-17

Apparatus for enhanced evanescent field exposure in an optical fiber resonator for spectroscopic detection and measurement of trace species

#64
20060177939
2006-08-10

Method for enhanced evanescent field exposure in an optical fiber resonator for spectroscopic detection and measurement of trace species

#65
20060084180
2006-04-20

Method for increasing the dynamic range of a cavity enhanced optical spectrometer

#66
20060072633
2006-04-06

Semiconductor spectroscopy system

#67
20050244982
2005-11-03

Tag free bio sensing micro strip

#68
20050232330
2005-10-20

Fabry-perot resonator apparatus and method including an in-resonator polarizing element

#69
20050218350
2005-10-06

Fabry-Perot resonator apparatus and method for observing low reflectivity surfaces

#70
20050206903
2005-09-22

Wavelength control for cavity ringdown spectrometer

#71
20050158868
2005-07-21

Method and device for measuring the absorption or light diffusion of biological elements

#72
20050122523
2005-06-09

Device and method of trace gas analysis using cavity ring-down spectroscopy

#73
20050110992
2005-05-26

Photonic crystal laser sources for chemical detection

#74
20050052653
2005-03-10

Mirror translation mechanism for cavity ring down spectroscopy

#75
20050040337
2005-02-24

Tunable laser fluid sensor

#76
17493448
2022-05-31

Resonant, multi-pass cavity for cavity ring-down spectroscopy