ClassID:

167737

G01N2021/1708 - 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 with opto-acoustic detection, e.g. for gases or analysing solids with piezotransducers

Recent Application in this class:
#1
20250369877
2025-12-04

THERMOMECHANICAL INFRARED DETECTOR WITH METAMATERIAL ABSORBER

#2
20250251339
2025-08-07

PHOTONIC INTEGRATED ACOUSTIC SENSOR

#3
20240336471
2024-10-10

MONITORING EQUILIBRIUM AND DISPENSEMENT OF A FLUID DISPENSEMENT SYSTEM TO IMPROVE QUALITY AND EFFICIENCY

#4
20240230520
2024-07-11

TIP-ENHANCED SPECTROSCOPY

#5
20240206739
2024-06-27

SEMI-COMPACT PHOTOACOUSTIC DEVICES AND SYSTEMS

#6
20230408455
2023-12-21

Photoacoustic detection system with differential amplifier for determing target species presence and triggering fault

#7
20220299427
2022-09-22

MEMS-based photoacoustic cell

#8
20220228974
2022-07-21

Detector cell for a photoacoustic gas sensor and photoacoustic gas sensor

#9
20220181540
2022-06-09

TRANSPARENT ULTRASOUND TRANSDUCERS

#10
20220136957
2022-05-05

Photoacoustic spectroscope having a vibrating structure as sound detector

#11
20210381952
2021-12-09

Saw based optical sensor device and package including the same

#12
20210261400
2021-08-26

Monitoring equilibrium and dispensement of a fluid dispensement system to improve quality and efficiency

#13
20210255093
2021-08-19

Optical-interference analysis

#14
20210231619
2021-07-29

Photoacoustic detection system with clocked tuning fork positions

#15
20210055207
2021-02-25

Detector cell for a photoacoustic gas sensor and photoacoustic gas sensor

#16
20200371018
2020-11-26

Photoacoustic excitation sensing enhanced by cross-correlated unfocused speckle images

#17
20200191750
2020-06-18

Photoacoustic gas analyzer for determining species concentrations using intensity modulation

#18
20190310183
2019-10-10

Saw based optical sensor device and package including the same

#19
20190212251
2019-07-11

Modular photoacoustic detection device

#20
20190175947
2019-06-13

Systems and methods for radiation beam range verification using sonic measurements

#21
20190170702
2019-06-06

Photoacoustic sensor, method for checking a gas-tightness, and system

#22
20190170635
2019-06-06

Apparatus for and method of sensing fluorine concentration

#23
20190017924
2019-01-17

Apparatus for and method of sensing fluorine concentration

#24
20190003958
2019-01-03

Acoustic probe and acoustic apparatus

#25
20180328889
2018-11-15

System and method for particulate matter analysis

#26
20180224370
2018-08-09

Noise canceling detector

#27
20180188213
2018-07-05

Photoacoustic gas analyzer for determining species concentrations using intensity modulation

#28
20170234790
2017-08-17

Photoacoustic apparatus

#29
20170176489
2017-06-22

Methods and systems for detecting gas flow by photoacoustic signal generation

#30
20160356700
2016-12-08

Modular photoacoustic detection device

#31
20160091415
2016-03-31

OBJECT INFORMATION ACQUIRING APPARATUS

#32
20150285737
2015-10-08

Helmholtz type differential acoustic resonator detection device

#33
20150233811
2015-08-20

Method, system and apparatus for the detection, characterization and classification of particles using photoacoustic and ultrasound techniques

#34
20150143911
2015-05-28

PHYSICAL/CHEMICAL SENSOR AND METHOD FOR MEASURING SPECIFIC SUBSTANCE

#35
20150135839
2015-05-21

PHOTOACOUSTIC PROBE MODULE AND PHOTOACOUSTIC IMAGING APPARATUS HAVING THE SAME

#36
20150126849
2015-05-07

Photoacoustic probe and photoacoustic diagnostic apparatus including same

#37
20150075288
2015-03-19

Photoacoustic wave measurement device

#38
20150059434
2015-03-05

Method and system for detecting a component in a fluid

#39
20150047433
2015-02-19

Photoacoustic wave measurement device, method, program, and recording medium

#40
20140378811
2014-12-25

Object information acquiring apparatus and method for controlling object information acquiring apparatus

#41
20140118739
2014-05-01

Time-reversal of variance-encoded light (TROVE)

#42
20130315783
2013-11-28

Sensor

#43
20130008230
2013-01-10

Resonant photo acoustic system

#44
20120307250
2012-12-06

Optical time reversal by ultrasonic encoding in biological tissue

#45
20120296192
2012-11-22

PHOTOACOUSTIC IMAGING APPARATUS AND PHOTOACOUSTIC IMAGING METHOD

#46
20120210796
2012-08-23

DEVICE AND METHOD FOR SPECTROSCOPICALLY DETECTING MOLECULES

#47
20120081708
2012-04-05

Integrated embedded processor based laser spectroscopic sensor

#48
20120064566
2012-03-15

Multiple phase flow system for detecting and isolating substances

#49
20110154884
2011-06-30

Pipe system, a gas sensing system for a pipe system, and a method of determining a gas component in a cavity of a pipe

#50
20110122416
2011-05-26

Turbidity suppression by optical phase conjugation using a spatial light modulator

#51
20110109962
2011-05-12

Optical phase conjugation 4Pi microscope

#52
20110108707
2011-05-12

Acoustic assisted phase conjugate optical tomography

#53
20110086365
2011-04-14

Method for sensing a chemical

#54
20110026031
2011-02-03

Pipe system, a fluid sensing system for a pipe system, and a method of determining a fluid component in an annulus cavity of a pipe

#55
20100285609
2010-11-11

Sensor

#56
20100177316
2010-07-15

Integrated embedded processor based laser spectroscopic sensor

#57
20100045990
2010-02-25

Oscillator element for photo acoustic detector

#58
20100043526
2010-02-25

Photo acoustic detector with improved signal processing

#59
20100037695
2010-02-18

PHOTOACOUSTIC IMAGING APPARATUS

#60
20100033710
2010-02-11

Broad spectral band sensor

#61
20100011836
2010-01-21

Cavity-enhanced photo acoustic trace gas detector with improved feedback loop

#62
20090229345
2009-09-17

PHOTOACOUSTIC SPECTROSCOPY DETECTOR AND SYSTEM

#63
20090174884
2009-07-09

Resonant optothermoacoustic detection of optical absorption

#64
20090128819
2009-05-21

LOW COST APPARATUS FOR DETECTION OF NITROGEN-CONTAINING GAS COMPOUNDS

#65
20090123962
2009-05-14

Chemical sensing device

#66
20090051900
2009-02-26

Apparatus and method for detecting particulates in water

#67
20080212100
2008-09-04

Sono-photonic gas sensor

#68
20080127715
2008-06-05

Selectivity enhancement in photoacoustic gas analysis via phase-sensitive detection at high modulation frequency

#69
20070051437
2007-03-08

Rapid method for sub-critical fatigue crack growth evaluation

#70
20070040469
2007-02-22

Broadband imager

#71
20070015992
2007-01-18

System and method for optoacoustic imaging

#72
20060266109
2006-11-30

Method and apparatus for reservoir characterization using photoacoustic spectroscopy

#73
20060266108
2006-11-30

Method and apparatus for reservoir characterization using photoacoustic spectroscopy

#74
20060263894
2006-11-23

Optical chemical sensing device with pyroelectric or piezoelectric transducer

#75
20050117155
2005-06-02

Quartz-enhanced photoacoustic spectroscopy