ClassID:

168108

G01N21/81 - 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 material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour Indicating humidity

Recent Application in this class:
#1
20250314595
2025-10-09

METHOD AND APPARATUS FOR SENSING HUMIDITY

#2
20250244251
2025-07-31

METHODS AND DEVICES FOR MONITORING MOISTURE LEVELS AND HUMIDITY CONTROL DEVICES

#3
20250123215
2025-04-17

Powder Storage Device Comprising An Enclosure, And Associated Method

#4
20250035626
2025-01-30

METHOD, APPARATUS AND SYSTEM FOR DETECTING AND DETERMINING COMPRISED REAGENT PADS BY QUANTIFYING COLOR CHANGES INDUCED BY EXPOSURE TO A HOSTILE ENVIRONMENT

#5
20250020586
2025-01-16

MODIFICATION OF CELLULOSE-BASED MATERIAL PARTS

#6
20240247869
2024-07-25

ENDOSCOPE DRYING AND DRYING VERIFICATION DEVICE

#7
20240219331
2024-07-04

METHOD FOR IDENTIFYING A STATE OF A STREAM OF REFRIGERANT

#8
20240206577
2024-06-27

Clothing Cuff Clip with Contamination Indicator

#9
20230384305
2023-11-30

Method, apparatus and system for detecting and determining comprised reagent pads by quantifying color changes induced by exposure to a hostile environment

#10
20230324308
2023-10-12

ELECTRONIC PACKAGE

#11
20230184687
2023-06-15

HUMIDITY-SENSING STRUCTURAL COLOR EMITTING LAMINATE AND STRUCTURAL COLOR DISPLAY DEVICE SELF-POWERED BY TRIBOELECTRICITY INCLUDING THE SAME LAMINATE

#12
20230139423
2023-05-04

HUMIDITY CONTROLLING MATERIAL AND HUMIDITY CONTROLLING APPARATUS

#13
20230127402
2023-04-27

Dry quality evaluation device for electrode and dry quality evaluation method for electrode

#14
20220397524
2022-12-15

Split refracting or split reflecting light received by cellulose-based film comprising surface pattern

#15
20220341851
2022-10-27

TAUTOMERIC SENSING USING A COVALENT ORGANIC FRAMEWORK

#16
20220283096
2022-09-08

Ultrafast colorimetric humidity sensor and method of preparing the same

#17
20220079476
2022-03-17

MULTICHANNEL HYDRATION MANAGEMENT SENSOR

#18
20220048626
2022-02-17

EXTERNAL LOAD TRANSPORT ASSEMBLY FOR AN AERIAL VEHICLE AND USE OF THE SAME FOR THE CONSTRUCTION AND MAINTENANCE OF POWER LINES

#19
20210396659
2021-12-23

Volume changeable polymer humidity sensor

#20
20210302328
2021-09-30

Clothing Cuff Clip with Contamination Indicator

#21
20210208082
2021-07-08

Method, apparatus and system for detecting and determining compromised reagent pads by quantifying color changes induced by exposure to a hostile environment

#22
20210199331
2021-07-01

Humidity indicating apparatus for dehumidifier

#23
20210190743
2021-06-24

Soil, moisture indicator, water detection unit used in soil, moisture indicator, body case, manufacturing method for water detection unit, and manufacturing method for soil moisture indicator

#24
20210181045
2021-06-17

Sensing textile

#25
20210080501
2021-03-18

Semiconductor module including semiconductor package and semiconductor package

#26
20210080398
2021-03-18

Sensor Including an Optical Fibre and Its Use in Wetness Monitoring

#27
20210007655
2021-01-14

Sweat mapping method

#28
20200352795
2020-11-12

WETNESS INDICATOR WITH HARDENERS

#29
20200300772
2020-09-24

Device and method for detection of humidity-compromised urine test strips

#30
20200255565
2020-08-13

Color-conversion photonic crystal structure and color-conversion photonic crystal sensor using same

#31
20200225166
2020-07-16

Method, apparatus and system for detecting and determining compromised reagent pads by quantifying color changes induced by exposure to a hostile environment

#32
20200217802
2020-07-09

Optical sensor for hydrogen bonding gaseous molecules

#33
20200209162
2020-07-02

SMART LABEL ARCHITECTURE WITH ORGANIC LEDS

#34
20200188875
2020-06-18

Composite granules including metal-containing polymeric materials

#35
20200166466
2020-05-28

Ultrafast colorimetric humidity sensor and method of preparing the same

#36
20200158654
2020-05-21

Air dryer cartridge and device comprising an air dryer cartridge

#37
20200128895
2020-04-30

Clothing cuff clip with contamination indicator

#38
20200072757
2020-03-05

Sensor element and packaged body

#39
20190390243
2019-12-26

Biomimetic virus-based colorimetric sensors

#40
20190242821
2019-08-08

Water-sensitive fluorophores for moisture content evaluation in hygroscopic polymers

#41
20190180657
2019-06-13

Wet surface indication

#42
20190021704
2019-01-24

Cartridges for oral fluid analysis and methods of use

#43
20180364115
2018-12-20

Sensing textile

#44
20180357884
2018-12-13

Moisture sensing system

#45
20180345627
2018-12-06

Moisture-responsive films

#46
20180328853
2018-11-15

Moisture sensing system for heating, ventilation and air conditioning systems

#47
20180238801
2018-08-23

Water-sensitive fluorophores for moisture content evaluation in hygroscopic polymers

#48
20180180553
2018-06-28

Device and method for detection of humidity-compromised urine test strips

#49
20180128790
2018-05-10

Detection system and method with nanostructure flow cell

#50
20180100807
2018-04-12

Color-changing environmental stimulus indicator with reference of variable appearance

#51
20180088173
2018-03-29

Semiconductor module including semiconductor package and semiconductor package

#52
20180011080
2018-01-11

DIAPERS WITH URINE DETECTION FUNCTIONALITY AND METHODS FOR DETECTING ANTIBIOTIC

#53
20170283848
2017-10-05

Chemical indicating composition, autoclave process indicator and method for preparing autoclave process indicator

#54
20170213976
2017-07-27

Encapsulation package, display device and packaging method

#55
20170190814
2017-07-06

Hydrochromic polydiacetylene composite composition, hydrochromic thin film using same, and use thereof

#56
20170124690
2017-05-04

System and method for detecting target substances

#57
20170045461
2017-02-16

Humidity indicating card

#58
20170043292
2017-02-16

Humidity control system

#59
20170027506
2017-02-02

Method and apparatus to sense hydration level of a person

#60
20170003229
2017-01-05

Detecting moisture proximate to insulation

#61
20160312262
2016-10-27

Biomimetic virus-based colorimetric sensors

#62
20160282276
2016-09-29

Liquid activated color change ink and methods of use

#63
20160258915
2016-09-08

Method for indicating moisture based on bis(glyoxime)-transition metal complexes

#64
20160169811
2016-06-16

Sensor labels that log events against time

#65
20160077073
2016-03-17

Measuring device, reaction carrier and measuring method

#66
20160061793
2016-03-03

Measuring device, reaction carrier and measuring method

#67
20150300958
2015-10-22

ADJUSTABLE COLORIMETRIC MOISTURE INDICATORS

#68
20150293028
2015-10-15

Adjustable Colorimetric Moisture Indicators

#69
20150122017
2015-05-07

CHROMOGENIC HUMIDITY SENSOR

#70
20140260571
2014-09-18

Progressive moisture detection

#71
20140253917
2014-09-11

Optical resonator for sensor arrangement and measuring method

#72
20140224170
2014-08-14

Water-ingress label using a double coating capsule structure

#73
20140176936
2014-06-26

Sensor assembly and method for determining the hydrogen and moisture content of transformer oil

#74
20130273554
2013-10-17

Bioluminescent packaging

#75
20130180899
2013-07-18

Filtering element

#76
20130116644
2013-05-09

Non-tacky wetness indicator composition for application on a polymeric substrate

#77
20130111976
2013-05-09

Low cost humidity and mold indicator for buildings

#78
20130052740
2013-02-28

Copper, starch and iodide moisture indicator

#79
20120322161
2012-12-20

Fluorescent pH detector system and related methods

#80
20120310535
2012-12-06

Environmental measurement system and environmental measurement method

#81
20120288785
2012-11-15

Holographic sensor

#82
20120167816
2012-07-05

Humidity indicator and method for fabricating the same

#83
20120143160
2012-06-07

Color-changing composition

#84
20120069866
2012-03-22

Method for hydrocarbon dew point temperature measurement and device for carrying out said method

#85
20120046628
2012-02-23

Dehydration sensors having buffered inks

#86
20110275159
2011-11-10

Chemical indicator composition, indicators and methods

#87
20110214600
2011-09-08

INDICATOR

#88
20110104023
2011-05-05

HUMIDITY INDICATOR AND METHOD FOR PRODUCING THE SAME

#89
20110102800
2011-05-05

Methods and devices for detecting and measuring environmental conditions in high performance device packages

#90
20110015599
2011-01-20

Multiple component materials having a color-changing composition

#91
20100248382
2010-09-30

Wafer process chamber leak detector

#92
20100171043
2010-07-08

SINGLE ELEMENT SENSOR WITH MULTIPLE OUTPUTS

#93
20100162940
2010-07-01

Blue Dot Moisture Detector

#94
20100093105
2010-04-15

Microfluidic device using centrifugal force, method of manufacturing the microfluidic device and sample analyzing method using the microfluidic device

#95
20090301191
2009-12-10

DEVICE FOR DETECTING AT LEAST ONE CHEMICAL CONSTITUENT

#96
20090266145
2009-10-29

Holographic sensor

#97
20090205659
2009-08-20

Device for detecting relative humidity in a respiratory circuit

#98
20090145347
2009-06-11

INDICATION MEMBER

#99
20090124497
2009-05-14

Coating for humidity indicator, method for production of the coating, and humidity indicator using the coating

#100
20090035865
2009-02-05

MOISTURE SENSOR

#101
20090015666
2009-01-15

AUTOMATED PROTEIN CRYSTALLIZATION IMAGING

#102
20080240667
2008-10-02

Coating material and fiber optic sensor in which this coating material is used

#103
20080185498
2008-08-07

Crystalline colloidal arrays responsive to an activator

#104
20080163673
2008-07-10

Irreversible humidity exposure dose indicator device

#105
20070264420
2007-11-15

Method of detecting the dryness of a water based composition used in an automated process

#106
20070203409
2007-08-30

Method and apparatus for the determination of abnormal skin dryness

#107
20070116402
2007-05-24

Humidity sensor and method for monitoring moisture in concrete

#108
20070113775
2007-05-24

Humidity indicator

#109
20070058898
2007-03-15

Humidity sensor and method for monitoring moisture in concrete

#110
20050201898
2005-09-15

Universal optical imaging and processing system

#111
20050150276
2005-07-14

IN-SITU MEASUREMENT OF WATER OF HYDRATION IN POLYELECTROLYTE MEMBRANE (PEM) OF FUEL CELL

#112
20050117144
2005-06-02

Automated protein crystallization imaging

#113
20050106735
2005-05-19

COMPOSITON FOR NON-TOXIC, NON-HAZARDOUS, AND ENVIRONMENTALLY FRIENDLY HUMIDITY-INDICATING AGENT AND ITS APPLICATION

#114
20050106613
2005-05-19

Method for judging change in probe-bearing substrate, probe-bearing substrate and detecting apparatus

#115
20050105841
2005-05-19

Devices, systems, and methods for sensing moisture

#116
20050078557
2005-04-14

Sensor

#117
16443546
2023-06-06

Batteryless architecture for color detection in smart labels