ClassID:

166074

G01J3/4338 - CPC Classification

Classification description:

Spectrometry; Spectrophotometry; Monochromators; Measuring colours; Investigating the spectrum; Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry; Modulation spectrometry; Derivative spectrometry Frequency modulated spectrometry

Recent Application in this class:
#1
20260098759
2026-04-09

GAS ABSORPTION SPECTROSCOPY APPARATUS

#2
20260079108
2026-03-19

LABEL-FREE IDENTIFICATION OF TUMOR TISSUES BY COHERENT NONLINEAR VIBRATIONAL MODE IMAGING

#3
20260056052
2026-02-26

Portable Quantum Spectrum Sensing Systems

#4
20260049867
2026-02-19

GAS ABSORPTION SPECTROMETER, CONTROL PROGRAM, AND CONTROL METHOD

#5
20250207975
2025-06-26

Cavity Enhanced Absorption Spectroscopy using a piecewise tunable laser and hierarchical wavelength determination

#6
20250146870
2025-05-08

REDUCTION OF OPTICAL INTERFERENCE SIGNALS BY MEANS OF VIBRATORY MOVEMENTS OF OPTICALLY ACTIVE ELEMENTS OF A SPECTROMETER

#7
20250116505
2025-04-10

LAYER THICKNESS DETERMINATION BY FOUR-WAVE-MIXING SPECTROSCOPY

#8
20250020509
2025-01-16

SPECTROPHOTOMETERS AND RELATED METHODS

#9
20240426659
2024-12-26

OPTICAL DETECTION DEVICE, SYSTEM, AND METHOD FOR OMNIDIRECTIONAL PHOTODETECTION

#10
20240337534
2024-10-10

OPTICAL BENCH FOR SPECTROSCOPY

#11
20240319009
2024-09-26

HYPERSPECTRAL IMAGING DEVICE AND OPERATION METHOD OF THE SAME

#12
20240094122
2024-03-21

METHOD FOR MEASURING A CONCENTRATION OF A GAS AND ASSOCIATED APPARATUS

#13
20240094055
2024-03-21

Noise mitigation in vapor cell spectroscopy

#14
20230314318
2023-10-05

Apparatus and method for spectroscopically detecting a sample

#15
20230314266
2023-10-05

APPARATUSES AND METHODS FOR ANOMALOUS GAS CONCENTRATION DETECTION

#16
20230025030
2023-01-26

Imaging system and imaging method

#17
20220364923
2022-11-17

Hyperspectral image based on dual-frequency comb

#18
20220260676
2022-08-18

WIRELESS COMMUNICATION WITH ENHANCED MAXIMUM PERMISSIBLE EXPOSURE (MPE) COMPLIANCE

#19
20220260486
2022-08-18

Chirped laser dispersion spectrometer and method

#20
20220244176
2022-08-04

Sample analyzing apparatus

#21
20220163389
2022-05-26

Cross-comb spectroscopy

#22
20220102930
2022-03-31

Dual optical frequency comb light-emitting device

#23
20220042849
2022-02-10

High sensitivity frequency-domain spectroscopy system

#24
20220034718
2022-02-03

Apparatuses and methods for anomalous gas concentration detection

#25
20210372855
2021-12-02

Cavity enhanced absorption spectroscopy using a piecewise tunable laser and hierarchical wavelength determination

#26
20210364353
2021-11-25

TERAHERTZ SPECTROSCOPY SYSTEM AND METHOD

#27
20210313709
2021-10-07

Tailored terahertz radiation

#28
20210305991
2021-09-30

Amplifier amplitude digital control for a mass spectrometer

#29
20210215602
2021-07-15

QCL Spectroscopy System and Applications Therefor

#30
20210190589
2021-06-24

Cavity buildup dispersion spectrometer and performing cavity buildup dispersion spectroscopy

#31
20210181023
2021-06-17

Cavity enhanced absorption spectroscopy using a piecewise tunable laser and hierarchical wavelength determination

#32
20210131868
2021-05-06

(Multi-) heterodyne detection spectrometer setup

#33
20210055385
2021-02-25

Wireless communication with enhanced maximum permissible exposure (MPE) compliance

#34
20210041296
2021-02-11

System and method for photomixer-based heterodyne high-frequency spectrometer and receiver

#35
20210041295
2021-02-11

TERAHERTZ SENSOR MODULE FOR SPECTROSCOPY AND IMAGING

#36
20200400496
2020-12-24

Terahertz spectroscopy system and method

#37
20200363264
2020-11-19

Laser speckle reduction and photo-thermal speckle spectroscopy

#38
20200355552
2020-11-12

Apparatuses and methods for anomalous gas concentration detection

#39
20200271515
2020-08-27

Terahertz spectroscopy system and method

#40
20200240910
2020-07-30

Gas absorption spectrometer and gas absorption spectroscopy method

#41
20200191651
2020-06-18

Compact infrared spectrometer systems and methods for measuring vibrational spectrum of materials and substances

#42
20200158573
2020-05-21

Fourier domain dynamic correction method for complex optical fringes in laser spectrometers

#43
20200158570
2020-05-21

System and method for rapid and accurate trace gas measurement

#44
20200064192
2020-02-27

Fourier domain dynamic correction method for complex optical fringes in laser spectrometers

#45
20190368935
2019-12-05

Dual sensor and method for detection of an analyte gas

#46
20190353525
2019-11-21

Fourier domain dynamic correction method for complex optical fringes in laser spectrometers

#47
20190271595
2019-09-05

Vibrational sum frequency generation using shaped near infrared light

#48
20190195789
2019-06-27

Gas concentration measurement by 2F signal trough distance

#49
20190145892
2019-05-16

Far-infrared imaging device and far-infrared imaging method

#50
20190101491
2019-04-04

Analysis apparatus and analysis method

#51
20190101445
2019-04-04

Method and Apparatus for Hyperspectral Imaging

#52
20190056270
2019-02-21

System and method for interferometric based spectrometry and compact spectrometer using same

#53
20190011362
2019-01-10

Devices and methods for coherent detection using chirped laser pulses

#54
20180321144
2018-11-08

QCL spectroscopy system and applications therefor

#55
20180306644
2018-10-25

Terahertz time-domain spectroscopy system

#56
20180292262
2018-10-11

LASER SPECKLE REDUCTION AND PHOTO-THERMAL SPECKLE SPECTROSCOPY

#57
20180252581
2018-09-06

Terahertz spectroscopy system and method

#58
20180245982
2018-08-30

Room-temperature quantum noise limited spectrometry and methods of the same

#59
20180233877
2018-08-16

Generating laser pulses and spectroscopy using the temporal talbot effect

#60
20180231460
2018-08-16

Substance detecting device, substance detecting system, and substance detecting method in which temperature control of light emission is performed

#61
20180217057
2018-08-02

Method for the non-destructive testing of a casing

#62
20180172581
2018-06-21

Analysis apparatus, program for analysis apparatus, and analysis method

#63
20180172511
2018-06-21

Concurrent activation of multiple illumination sources for sample analysis

#64
20180156726
2018-06-07

Optical absorbance measurements with self-calibration and extended dynamic range

#65
20180100999
2018-04-12

Modulating spectroscopic imaging system using substantially coherent illumination

#66
20180052051
2018-02-22

Segmented chirped-pulse fourier transform spectroscopy

#67
20180003624
2018-01-04

Absorption spectrometer

#68
20170336261
2017-11-23

Terahertz wave spectrometry system

#69
20170307443
2017-10-26

Systems and methods for correction of frequency spectrum in dual comb spectroscopy

#70
20170284867
2017-10-05

Imaging method and apparatus

#71
20170268930
2017-09-21

Spectroscopic Apparatus and Method

#72
20170234732
2017-08-17

Device and method for wavelength variation of at least one light source for derivative spectroscopy

#73
20170211979
2017-07-27

Room-temperature quantum noise limited spectrometry and methods of the same

#74
20170176256
2017-06-22

Segmented chirped-pulse Fourier transform spectroscopy

#75
20170138846
2017-05-18

Method and system for reduction of influence of baseline distortion in absorption spectroscopy measurements

#76
20170059408
2017-03-02

Method and device for generating multispectral or hyperspectral light, for hyperspectral imaging and/or for distance measurement and/or 2D or 3D profile measurement of an object by means of spectrometry

#77
20160334507
2016-11-17

Simultaneous ranging and remote chemical sensing utilizing optical dispersion or absorption spectroscopy

#78
20160334331
2016-11-17

Method and device for determining gas component inside a transparent container

#79
20160299064
2016-10-13

Far-infrared imaging device and far-infrared imaging method

#80
20160252393
2016-09-01

Terahertz spectroscopy system and method

#81
20160209325
2016-07-21

QCL spectroscopy system and applications therefor

#82
20160178517
2016-06-23

Apparatus and method of gas analysis using laser light

#83
20160169740
2016-06-16

Optical spectroscopic measurement system

#84
20160161401
2016-06-09

Capillary absorption spectrometer and process for isotopic analysis of small samples

#85
20160146666
2016-05-26

Electric field vector detection method and electric field vector detection device

#86
20160109294
2016-04-21

Terahertz spectrometer and method for reducing photomixing interference pattern

#87
20160061721
2016-03-03

System and method for dissolved gas analysis

#88
20160041032
2016-02-11

Spectroscopy apparatus and method

#89
20150292947
2015-10-15

QCL spectroscopy system and applications therefor

#90
20150276590
2015-10-01

Cavity enhanced laser based isotopic gas analyzer

#91
20150260575
2015-09-17

Segmented chirped-pulse fourier transform spectroscopy

#92
20150253261
2015-09-10

Chirped pulse frequency-domain comb for spectroscopy

#93
20150070692
2015-03-12

Cavity-enhanced frequency comb spectroscopy system employing a prism cavity

#94
20150042991
2015-02-12

Laser spectrometer and method for measuring concentration of a gas component in a measurement gas

#95
20140375995
2014-12-25

Tunable diode laser absorption spectroscopy with water vapor determination

#96
20140336957
2014-11-13

Method for calibration-free scanned-wavelength modulation spectroscopy for gas sensing

#97
20140327816
2014-11-06

Tunable light source system with wavelength measurement for a hyper-spectral imaging system

#98
20140326884
2014-11-06

Room-temperature quantum noise limited spectrometry and methods of the same

#99
20140320856
2014-10-30

Cavity enhanced absorption spectroscopy with a laser modulation side-band frequency locked to the cavity

#100
20140268135
2014-09-18

Stand-off spectrometry systems and methods

#101
20140220700
2014-08-07

Capillary absorption spectrometer and process for isotopic analysis of small samples

#102
20140192347
2014-07-10

Cavity enhanced laser based isotopic gas analyzer

#103
20140185035
2014-07-03

Method for measuring concentration of a gas component in a measurement gas

#104
20140125967
2014-05-08

Gas analyzer

#105
20140111808
2014-04-24

Optical subtraction of molecular dispersion signals enabled by differential optical dispersion spectroscopy

#106
20140049777
2014-02-20

Multi-harmonic inline reference cell for optical trace gas sensing

#107
20130314703
2013-11-28

Tunable multispectral laser source

#108
20130265573
2013-10-10

Segmented chirped-pulse fourier transform spectroscopy

#109
20130215432
2013-08-22

Filtered ASE swept source for OCT medical imaging

#110
20130163000
2013-06-27

Gas measurement apparatus and the setting method of width of wavelength modulation in gas measurement apparatus

#111
20130148190
2013-06-13

Wavelength sweep control

#112
20130144561
2013-06-06

Optical signal processing method and apparatus for analysing time-decay signals

#113
20130135615
2013-05-30

Stimulated raman scattering measurement apparatus

#114
20130100445
2013-04-25

METHOD FOR DATA ACQUISITION

#115
20130057864
2013-03-07

Time-synchronized TDLAS measurements of pressure and temperature in a gas turbine engine

#116
20130044314
2013-02-21

Cavity enhanced laser based isotopic gas analyzer

#117
20130020480
2013-01-24

Multi-channel source assembly for downhole spectroscopy

#118
20120261578
2012-10-18

SCANNING LASER INFRARED MOLECULAR SPECTROMETER

#119
20120199745
2012-08-09

Widely-tunable semiconductor source integrated in windowed hermetic package

#120
20120133775
2012-05-31

SYSTEM AND METHOD FOR DETECTING EXPLOSIVE AGENTS USING SWIR, MWIR, AND LWIR HYPERSPECTRAL IMAGING

#121
20120113426
2012-05-10

Method and apparatus for trace gas detection using integrated wavelength modulated spectra across multiple lines

#122
20120103065
2012-05-03

Photoacoustic sensor

#123
20120044479
2012-02-23

Terahertz spectroscopy system and method

#124
20120033220
2012-02-09

QCL spectroscopy system and applications therefor

#125
20120031167
2012-02-09

METHOD AND DEVICE FOR CONTROLLING OR MONITORING FIRING SYSTEMS AND FOR MONITORING BUILDINGS HAVING GAS BURNERS

#126
20120004861
2012-01-05

Energy flow measurement in gas pipelines

#127
20110261351
2011-10-27

SYSTEM AND METHOD FOR DETECTING EXPLOSIVES USING SWIR AND MWIR HYPERSPECTRAL IMAGING

#128
20110242527
2011-10-06

Room-temperature quantum noise limited spectrometry and methods of the same

#129
20110240861
2011-10-06

Room-temperature quantum noise limited spectrometry and methods of the same

#130
20110228371
2011-09-22

Apparatus for reducing fringe interference of light created in an optical system of a laser spectroscopy system

#131
20110184624
2011-07-28

GAS DETECTION DEVICE

#132
20110181877
2011-07-28

Method of calibrating a wavelength-modulation spectroscopy apparatus using a first, second and third gas to determine temperature and pressure values to calculate concentrations of analytes in a gas

#133
20110181876
2011-07-28

Method of calibrating a wavelength-modulation spectroscopy apparatus using a first, second, and third gas to determine temperature values to calculate concentrations of an analyte in a gas

#134
20110111154
2011-05-12

Polyamide, composition comprising such a polyamide, and uses thereof

#135
20110108719
2011-05-12

Multi-channel source assembly for downhole spectroscopy

#136
20110090498
2011-04-21

Method for reducing interference fringes by moving timing of triangular motion

#137
20110058176
2011-03-10

SPECTROMETERS UTILIZING MID INFRARED ULTRA BROADBAND HIGH BRIGHTNESS LIGHT SOURCES

#138
20110051148
2011-03-03

Filtered ASE swept source for OCT medical imaging

#139
20110032516
2011-02-10

Optical absorbance measurements with self-calibration and extended dynamic range

#140
20100296089
2010-11-25

Wavelength tracker for swept wavelength sensor interrogation system

#141
20100265501
2010-10-21

Enhanced surface-selective spectroscopy using broad-band heterodyne-detected sum frequency generation

#142
20100182600
2010-07-22

Self-contained multivariate optical computing and analysis system

#143
20100140478
2010-06-10

Gas detector

#144
20100128348
2010-05-27

Wavelength swept light source and filter based on sweep function, and its method of operation

#145
20100118294
2010-05-13

Apparatus for detecting the leakage of heavy water in nuclear reactor system and detection method using the same

#146
20100107729
2010-05-06

Energy flow measurement in gas pipelines

#147
20100103426
2010-04-29

Optical sensor interrogation system based on FDML wavelength swept laser

#148
20100091278
2010-04-15

Wavelength-modulation spectroscopy method and apparatus

#149
20100089117
2010-04-15

Method of calibrating a wavelength-modulation spectroscopy apparatus

#150
20100079753
2010-04-01

RAMAN SPECTROMETER HAVING WAVELENGTH-SELECTIVE OPTICAL AMPLIFICATION

#151
20100074626
2010-03-25

System and method for signal extraction by path modulation

#152
20100074363
2010-03-25

System and method for suppressing noise by frequency dither

#153
20100072368
2010-03-25

Spectral Measuring System

#154
20090323762
2009-12-31

High-speed spectrographic sensor for internal combustion engines

#155
20090295576
2009-12-03

Inspection system and method

#156
20090290160
2009-11-26

WAVELENGTH SWEEP CONTROL

#157
20090273781
2009-11-05

Apparatus and method for monitoring of gas having stable isotopes

#158
20090201507
2009-08-13

Wavelength modulation spectroscopy method and system

#159
20090200472
2009-08-13

THz investigation apparatus and method

#160
20090153871
2009-06-18

Combination lightwave antenna and spectral analyzer and methods

#161
20090079991
2009-03-26

Optical characteristic measuring apparatus

#162
20090002684
2009-01-01

High-speed spectrographic sensor for internal combustion engines

#163
20080316495
2008-12-25

Optical characteristic measuring apparatus

#164
20080291444
2008-11-27

Method of Spectroscopy

#165
20080288182
2008-11-20

Energy flow measurement in gas pipelines

#166
20080232410
2008-09-25

Methods, arrangements and apparatus for utilizing a wavelength-swept laser using angular scanning and dispersion procedures

#167
20080225285
2008-09-18

Device for and Method of Measurement of Chemical Agents Quantity in Gas Medium

#168
20080204743
2008-08-28

Method and apparatus for improved signal to noise ratio in Raman signal detection for MEMS based spectrometers

#169
20080196477
2008-08-21

Photo-acoustic spectrometer apparatus

#170
20080137084
2008-06-12

Method and apparatus for reducing fringe interference of light

#171
20080117417
2008-05-22

Optical spectrum analyzer

#172
20080087078
2008-04-17

Logging system and method for in-situ fluids sensing through optical fiber with attenuation compensation

#173
20080086038
2008-04-10

Method for measurement of analyte concentrations and semiconductor laser-pumped, small-cavity fiber lasers for such measurements and other applications

#174
20080059135
2008-03-06

Pathogen detection using coherent anti-stokes Raman scattering microscopy

#175
20080055595
2008-03-06

System and method of capturing multiple source excitations from a single location on a flow channel

#176
20080023634
2008-01-31

NON-INVASIVE DETECTION OF ANALYTES IN A COMPLES MATRIX

#177
20080018890
2008-01-24

Method and apparatus for improved signal to noise ratio in Raman signal detection for MEMS based spectrometers

#178
20070280703
2007-12-06

Wavelength sweep control

#179
20070246653
2007-10-25

Measuring water vapor in hydrocarbons

#180
20070177141
2007-08-02

Optical spectrum analyzer

#181
20070171407
2007-07-26

Method and apparatus for detecting optical spectral properties using optical probe beams with multiple sidebands

#182
20070131882
2007-06-14

Gas detection

#183
20070109550
2007-05-17

System and deconvolution process for an optical filtering device based on WGM resonance

#184
20070109536
2007-05-17

Modulated excitation fluorescence analysis

#185
20070102648
2007-05-10

Method and system for nuclear substance revealing using muon detection

#186
20070071040
2007-03-29

Method and system for noise control in semiconductor spectroscopy system

#187
20070046934
2007-03-01

Multi-function laser induced breakdown spectroscopy and laser ablation material analysis system and method

#188
20070045543
2007-03-01

System and method for detecting water vapor within natural gas

#189
20070034802
2007-02-15

System and method for detecting water vapor within natural gas

#190
20070024847
2007-02-01

Spectroscopy probe and material processing system

#191
20070018103
2007-01-25

Method and apparatus for frequency-converting infrared light

#192
20060280216
2006-12-14

Semiconductor laser-based spectrometer

#193
20060279741
2006-12-14

Optical characteristic measuring apparatus

#194
20060132766
2006-06-22

Continuously tunable external cavity diode laser

#195
20060100490
2006-05-11

Cross-sectional mapping of spectral absorbance features

#196
20060088068
2006-04-27

Low noise swept wavelength laser system and method

#197
20060065834
2006-03-30

Method and system for noise control in semiconductor spectroscopy system

#198
20060061761
2006-03-23

Apparatus for fluorescence subtracted Raman spectroscopy

#199
20060050270
2006-03-09

Device, method and system for determining the road surface condition

#200
20060012797
2006-01-19

Techniques for recovering optical spectral features using a chirped optical field

#201
20050179905
2005-08-18

Multi-channeled measuring method and apparatus for measuring spectrum of terahertz pulse

#202
20050162658
2005-07-28

Terahertz modulation spectrometer

#203
20050157303
2005-07-21

Semiconductor diode laser spectrometer arrangement and method

#204
20050156110
2005-07-21

Terahertz radiation sensor and imaging system

#205
20050140979
2005-06-30

Wavelength modulation spectroscopy method

#206
20050105099
2005-05-19

Coherent photothermal interferometric spectroscopy system and method for chemical sensing

#207
20050099623
2005-05-12

Optical measuring method for semiconductor multiple layer structures and apparatus therefor

#208
20050094149
2005-05-05

Reduction of residual amplitude modulation in frequency-modulated signals

#209
20050030540
2005-02-10

Optical spectroscopy apparatus and method for measurement of analyte concentrations or other such species in a specimen employing a semiconductor laser-pumped, small-cavity fiber laser

#210
18353175
2024-02-27

Vector noise subtraction in vapor cell spectroscopy

#211
13720598
2014-04-01

Method and system for determining energy content and detecting contaminants in a fluid stream