ClassID:

165326

G01F23/268 - CPC Classification

Classification description:

Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors mounting arrangements of probes

Recent Application in this class:
#1
20260118152
2026-04-30

CAPACITIVE LIQUID SENSOR AND METHOD FOR INSTALLING CAPACITIVE LIQUID SENSOR

#2
20260094140
2026-04-02

RADIO TRANSMITTER DEVICE FOR USE IN METHOD AND SYSTEM FOR MONITORING, CONTROLLING AND OPTIMIZING FLOW OF PRODUCTS

#3
20250389571
2025-12-25

APPARATUS AND METHOD FOR FLUID COMPOSITION ANALYSIS

#4
20250362166
2025-11-27

METHOD AND SYSTEM FOR DETECTING FILL IN FLUID STORAGE SYSTEMS

#5
20250354850
2025-11-20

SENSOR FOR LOCATING POSITION OF INTERFACE, AND LEVEL GAUGE

#6
20250314518
2025-10-09

SENSOR

#7
20250314517
2025-10-09

SENSOR

#8
20250290784
2025-09-18

SENSOR FOR LOCATING INTERFACE POSITION, AND LIQUID LEVEL GAUGE

#9
20250234930
2025-07-24

AEROSOL GENERATING DEVICE

#10
20250216243
2025-07-03

FILL LEVEL GAUGE

#11
20250198823
2025-06-19

NON-INTRUSIVE FLOW SENSOR

#12
20250098744
2025-03-27

AEROSOL GENERATING DEVICE AND METHOD

#13
20250012616
2025-01-09

CONTINUOUS LIQUID LEVEL SENSING SYSTEM UTILIZING PROJECTED CAPACITANCE

#14
20250012615
2025-01-09

PRODUCT LEVEL DETECTION APPARATUSES AND SYSTEMS FOR FLUID DISPENSERS

#15
20240430991
2024-12-26

CARTRIDGE INCLUDING A LIQUID STORAGE PORTION WITH A FLEXIBLE WALL

#16
20240393358
2024-11-28

FLUID CONTAINER MANAGEMENT SYSTEM AND METHOD

#17
20240393357
2024-11-28

FLUID CONTAINER POSITIONING SYSTEM

#18
20240393356
2024-11-28

FLUID CONTAINER DISPOSAL SYSTEM AND METHOD

#19
20240328846
2024-10-03

LIQUID SENSOR

#20
20240295575
2024-09-05

FLUID CONTAINER MANAGEMENT SYSTEM

#21
20240295574
2024-09-05

FLUID CONTAINER MANAGEMENT SYSTEM

#22
20240295573
2024-09-05

FLUID CONTAINER MANAGEMENT SYSTEM

#23
20240280396
2024-08-22

Level Detection System

#24
20240230392
2024-07-11

MEASUREMENT DEVICE, MEASUREMENT SYSTEM AND METHOD

#25
20240200313
2024-06-20

Backflow Alert System

#26
20240142291
2024-05-02

CAPACITIVE SENSOR FOR DETERMINING A FLUID LEVEL IN A CONTAINER

#27
20240118122
2024-04-11

CAPACITIVE SENSING FOR BLOOD CHARACTERIZATION

#28
20240108264
2024-04-04

DEVICE FOR TRACKING URINE OUTPUT

#29
20240086884
2024-03-14

RADIO TRANSMITTER DEVICE FOR USE IN METHOD AND SYSTEM FOR MONITORING, CONTROLLING AND OPTIMIZING FLOW OF PRODUCTS

#30
20240060809
2024-02-22

HOUSING FOR CAPACITIVE LIQUID LEVEL SENSOR

#31
20240053184
2024-02-15

Liquid level detection based on tunable inductive-capacitive tank circuit

#32
20240019289
2024-01-18

SENSOR, CARTRIDGE AND DRUG DELIVERY DEVICE

#33
20240011604
2024-01-11

SYSTEM AND METHOD FOR DIGITALLY MONITORING A PRESSURE VESSEL

#34
20230393163
2023-12-07

FLUID CONTAINER MANAGEMENT SYSTEM

#35
20230392969
2023-12-07

LEVEL SENSOR

#36
20230358591
2023-11-09

A LIQUID FILTER

#37
20230280199
2023-09-07

LIQUID LEVEL SENSOR FOR A CHEMICAL SOURCE VESSEL

#38
20230269834
2023-08-24

Cartridge including a liquid storage portion with a flexible wall

#39
20230228612
2023-07-20

LEVEL GAUGE AND METHOD FOR SENSING MATERIAL LEVELS IN TANKS

#40
20230204402
2023-06-29

WATER LEVEL DETECTION DEVICE AND METHOD FOR CONTROLLING WATER LEVEL DETECTION DEVICE

#41
20230184576
2023-06-15

POOL CONDITION MONITORING APPARATUS AND METHOD

#42
20230173197
2023-06-08

Apparatus, system and method of providing a conformable heater system

#43
20230160735
2023-05-25

Capacitive liquid level sensor

#44
20230119297
2023-04-20

RECORDING APPARATUS AND METHOD OF CONTROLLING THE SAME

#45
20230115077
2023-04-13

AEROSOL PROVISION DEVICE

#46
20230113394
2023-04-13

GEAR CASE FLUID SENSOR

#47
20230103467
2023-04-06

NON-INVASIVE CONTINUOUS CAPACITANCE LEVEL DETECTOR

#48
20230052179
2023-02-16

Liquid-Gauging Systems For Collapsible Bladders, and Related Apparatus and Methods

#49
20230042083
2023-02-09

DRUG DELIVERY MONITORING SYSTEM

#50
20230018389
2023-01-19

Compressed gas cylinder gas density measurement

#51
20220404187
2022-12-22

SMART HYDRATION RESERVOIR AND ALGORITHM OF CALCULATING THE LIQUID LEVEL THEREOF

#52
20220373380
2022-11-24

Resistive wire wiring shield to prevent electromagnetic interference

#53
20220373369
2022-11-24

HYGIENIC ADAPTER FOR FIELD INSTRUMENT

#54
20220349740
2022-11-03

Well bore fluid sensor, system, and method

#55
20220349739
2022-11-03

Liquid sensor assembly

#56
20220347364
2022-11-03

Non-intrusive flow sensor

#57
20220341427
2022-10-27

Manual-automatic integrated self-adaptive pump with infrared water level detection function

#58
20220290673
2022-09-15

Pumping System

#59
20220221321
2022-07-14

Remote measuring liquid level sensor for intermediate bulk container applications

#60
20220214205
2022-07-07

Electrode embedded ceramic structure

#61
20220187114
2022-06-16

Liquid sensor

#62
20220170775
2022-06-02

DEVICE FOR CAPACITIVE MEASUREMENT OF A HEIGHT OF A FLUID IN A TANK

#63
20220155128
2022-05-19

Liquid sensor and method for manufacturing optical waveguide

#64
20220120599
2022-04-21

Capacitive fuel gaging system with resistive elements

#65
20220106783
2022-04-07

TOILET OVERFLOW PREVENTION SYSTEM AND METHOD

#66
20220074782
2022-03-10

Method for level measuring by means of the capacitive level sensor

#67
20220074781
2022-03-10

Liquid flow monitoring system

#68
20220065682
2022-03-03

Product level detection apparatuses and systems for fluid dispensers

#69
20220058607
2022-02-24

Radio transmitter device for use in method and system for monitoring, controlling and optimizing flow of products

#70
20220057248
2022-02-24

REFRIGERATOR

#71
20220034699
2022-02-03

Capacitive gauge with lamellar electrodes held by spacer(s)

#72
20220026256
2022-01-27

Capacitive liquid level sensor and liquid sensor assembly

#73
20220018350
2022-01-20

Horizontal automatic submersible pump

#74
20220003589
2022-01-06

Capacitive sensor for detection of the level of a medium

#75
20210381874
2021-12-09

CAPACITIVE LEVEL SENSOR, SENSITIVE ELEMENT OF THE CAPACITIVE LEVEL SENSOR, ELECTRODE HOUSING FOR THE CAPACITIVE LEVEL SENSOR

#76
20210333140
2021-10-28

Level sensor for detecting the level of a medium

#77
20210283447
2021-09-16

Printed capacitive liquid level sensor for fire suppression

#78
20210262846
2021-08-26

METHODS AND APPARATUS FOR A CAPACITIVE SENSOR

#79
20210255022
2021-08-19

Curb for measuring flood depth in urban area

#80
20210247225
2021-08-12

Device and method for monitoring liquid level of liquid storage tanks for vehicle

#81
20210236734
2021-08-05

Sensor for a drug delivery device

#82
20210223087
2021-07-22

Quick connection for liquid level sense-enabled metering probe

#83
20210212173
2021-07-08

Cartridge including a liquid storage portion with a flexible wall

#84
20210197189
2021-07-01

BUFFER MANAGEMENT FOR BIOPROCESSING SYSTEM

#85
20210131853
2021-05-06

Device for capacitively measuring the powder fill level in a filling apparatus of a rotary press

#86
20210123785
2021-04-29

Probe unit with a securement unit that releasably secures an electrode on the probe body

#87
20210116287
2021-04-22

Sensor, cartridge and drug delivery device

#88
20210116285
2021-04-22

Capacitive sensor device

#89
20210110368
2021-04-15

Radio transmitter device for use in method and system for monitoring, controlling and optimizing flow of products

#90
20210096016
2021-04-01

Physical quantity detection device and printing apparatus

#91
20210095958
2021-04-01

ORIENTATION SENSING

#92
20210063227
2021-03-04

OPERATING LIQUID CONTAINER COMPRISING A BUILT-IN SYSTEM FOR DETECTING THE FILLING LEVEL

#93
20210063226
2021-03-04

Container disturbance filtering for capacitive liquid level sensing

#94
20210041284
2021-02-11

Liquid level sensor for a chemical source vessel

#95
20210034081
2021-02-04

Fluid top-off detection and control system

#96
20210018000
2021-01-21

CIRCUIT ASSEMBLY FOR A SUBMERSIBLE PUMP AND SUBMERSIBLE PUMP USING THE SAME

#97
20200333175
2020-10-22

Dual polarity mutual capacitive liquid sensing

#98
20200300685
2020-09-24

Pathogen transport modelled biomimetic sensor, sensing method, and fresh food sanitization

#99
20200298991
2020-09-24

ELECTRIC POWER AND DATA COMMUNICATIONS WITHIN A FUEL TANK AND ACROSS A WALL OF THE FUEL TANK USING RESISTIVE NON-METALLIC WIRE AND A SEALED ACTIVE CONNECTOR

#100
20200298990
2020-09-24

Electric power and data communications within a fuel tank and across a wall of the fuel tank using resistive non-metallic wire and an optical hybrid fuel height sensor

#101
20200298989
2020-09-24

Electric power and data communications within a fuel tank and across a wall of the fuel tank using resistive non-metallic wire

#102
20200277772
2020-09-03

Toilet overflow prevention system and method

#103
20200271504
2020-08-27

METHODS AND APPARATUS FOR A CAPACITIVE SENSOR

#104
20200264119
2020-08-20

Method and system of monitoring electrolyte levels and composition using capacitance or induction

#105
20200264029
2020-08-20

Sensor adapter

#106
20200232837
2020-07-23

Sensor unit, fluid power unit with sensor unit and method for measuring parameters of a fluid

#107
20200232836
2020-07-23

Device for detecting the level of a medium

#108
20200232835
2020-07-23

Device for detecting the level of a medium

#109
20200209044
2020-07-02

Capacitive measurement device with minimized sensitivity to manufacturing variability and environmental changes

#110
20200191638
2020-06-18

Liquid tank with capacitive level sensor

#111
20200191637
2020-06-18

Fill level sensor

#112
20200189903
2020-06-18

Method and device for controlling the quantity of liquid contained in a cartridge for an aerosol generating device

#113
20200173835
2020-06-04

Device for detecting the level of a medium

#114
20200141788
2020-05-07

Capacitive sensing system and related method

#115
20200072651
2020-03-05

FLUID LEVEL SENSOR APPARATUS WITH INTER-DIGITATED PLANR CAPACITORS FOR DIRECTLY INSERTING INTO A FLUID

#116
20200056919
2020-02-20

Radio transmitter device for use in method and system for monitoring, controlling and optimizing flow of products

#117
20200033178
2020-01-30

Dielectric-constant-insensitive fluid level sensor

#118
20200032501
2020-01-30

MONITORING ACCESS COVER

#119
20190376830
2019-12-12

Device and method for monitoring liquid level of liquid storage tanks for vehicle

#120
20190368911
2019-12-05

LIQUID LEVEL SENSOR CIRCUIT

#121
20190366729
2019-12-05

Relating to inkjet printers

#122
20190298615
2019-10-03

Baby bottle sensor with content volume sensing and content deduction logic

#123
20190293471
2019-09-26

Impedance limit switch for reducing EMC radiation

#124
20190137318
2019-05-09

Isolated capacitive liquid level probe

#125
20190128726
2019-05-02

Device for detecting the level of a medium

#126
20190120680
2019-04-25

LEAK SENSOR

#127
20190120679
2019-04-25

Capacitance sensing apparatus and method for detecting gas-liquid transitions

#128
20190120678
2019-04-25

Fluid property sensing with electrodes

#129
20190086253
2019-03-21

Capacitive level sensor and method of measuring the level of a medium

#130
20190078925
2019-03-14

Coupling element for a capacitive fill level measuring device

#131
20190078924
2019-03-14

System and method for measuring the level of fluid in a container

#132
20190063981
2019-02-28

Capacitive sensor for liquid sensing

#133
20190063980
2019-02-28

Product level detection apparatuses and systems for fluid dispensers

#134
20190049283
2019-02-14

Method for the automated classification of a liquid as well as method for the automated adaption of presettings for a capacitive liquid level measurement

#135
20190041074
2019-02-07

Humidifier measurement and control

#136
20190025108
2019-01-24

Radio transmitter device for use in method and system for monitoring controlling and optimizing flow of products

#137
20190022322
2019-01-24

Sensor for a drug delivery device

#138
20180371734
2018-12-27

Toilet overflow prevention system and method

#139
20180364089
2018-12-20

System for measuring level of a precursor in a container

#140
20180356455
2018-12-13

CAPACITANCE SENSOR

#141
20180348156
2018-12-06

Method and system of monitoring electrolyte levels and composition using capacitance or induction

#142
20180326661
2018-11-15

Non-contact level sensing for low dielectric constant inks

#143
20180321074
2018-11-08

Water content measuring device, measuring method, and image forming device

#144
20180282788
2018-10-04

Systems and methods for capacitive fluid level detection, and handling containers

#145
20180274965
2018-09-27

Equalizing reservoir with fill level sensor

#146
20180252569
2018-09-06

Device and method for measuring the depth of media

#147
20180243671
2018-08-30

Water level sensor device for a fuel filter

#148
20180236172
2018-08-23

Sensor, cartridge and drug delivery device

#149
20180231412
2018-08-16

Liquid level detector

#150
20180228977
2018-08-16

Sensor, cartridge and drug delivery device

#151
20180224315
2018-08-09

Sensor, cartridge and drug delivery device

#152
20180208158
2018-07-26

Wiper for liquid level sensors in automotive washer bottle

#153
20180188098
2018-07-05

Fluid gauging system and fuel tank equipment

#154
20180184965
2018-07-05

Urine measurement device and method

#155
20180135633
2018-05-17

Pump with external electrical components and related methods

#156
20180132643
2018-05-17

An Intelligent Liquid Intake Measurement Device

#157
20180104387
2018-04-19

Sensor with electrical contact protection for use in fluid collection canister and negative pressure wound therapy systems including same

#158
20180100754
2018-04-12

Flexible fluid level sensor with improved measurement capability

#159
20180094963
2018-04-05

Guided wave radar level gauge system with dual transmission line probes for dielectric constant compensation

#160
20180093042
2018-04-05

Sensor and sensor assembly for capacitive determination of a filling level

#161
20180080808
2018-03-22

DEVICE FOR MEASURING THE LEVEL OF A LIQUID

#162
20180058897
2018-03-01

Capacitance liquid level sensor

#163
20180058896
2018-03-01

Liquid level sensor and method for sensing liquid level

#164
20180052032
2018-02-22

Immersion detector and an aircraft

#165
20180052031
2018-02-22

Capacitive fluid level sensor for rapid response

#166
20180023993
2018-01-25

Capacitive continuous fluid level sensor

#167
20180010947
2018-01-11

Body of level gauge with electrical lead extending therethrough

#168
20170343407
2017-11-30

Probe unit

#169
20170336242
2017-11-23

Capacitive detection device and measuring device including same

#170
20170336238
2017-11-23

Fill level measurement device

#171
20170320576
2017-11-09

GREY WATER INTERFACE VALVE LIQUID LEVEL SENSOR SYSTEM

#172
20170299418
2017-10-19

FUEL GAUGE

#173
20170299417
2017-10-19

Level sensor and method

#174
20170299416
2017-10-19

Sensor for detecting the level of a medium

#175
20170279167
2017-09-28

Liquid level sensor for battery monitoring systems

#176
20170261361
2017-09-14

Sensor for detecting the level of a medium

#177
20170224922
2017-08-10

Device for attachment to a portable liquid injection device

#178
20170219413
2017-08-03

Devices and systems for liquid level detection in hematology instruments, and methods related thereto

#179
20170191861
2017-07-06

Sensor for detecting the level of a medium

#180
20170160122
2017-06-08

Positioning apparatus for a liquid level sensor

#181
20170153139
2017-06-01

Apparatus for detecting liquid level

#182
20170131012
2017-05-11

System or method for measuring the phase of ammonia in a cooling system

#183
20170119970
2017-05-04

Medication injector with capacitive fill level measurement capacity, and contact sensor

#184
20170115154
2017-04-27

Probe end device and method for manufacturing a probe end device

#185
20170115153
2017-04-27

Method and apparatus for monitoring fill level of a medium in a container

#186
20170071255
2017-03-16

Cartridge including a liquid storage portion with a flexible wall

#187
20170071253
2017-03-16

Cartridge with a capacity sensor

#188
20170059386
2017-03-02

Device for contactless measurement of a level in a tank

#189
20170045391
2017-02-16

Liquid level sensor with insulating region over the probe foot

#190
20170030760
2017-02-02

Capacitance-type sensor probe

#191
20160349095
2016-12-01

Liquid level sensor measuring a characteristic indicative of inductive coupling

#192
20160338554
2016-11-24

Hand dryer apparatus

#193
20160331877
2016-11-17

Sensor with electrical contact protection for use in fluid collection canister and negative pressure wound therapy systems including same

#194
20160320222
2016-11-03

Fluid containers with integrated level sensing

#195
20160298996
2016-10-13

DISCRETE CAPACITIVE FLOW STREAM HEIGHT MEASUREMENT FOR PARTIALLY FILLED PIPES

#196
20160298994
2016-10-13

Adjustment-free fill level sensor

#197
20160230625
2016-08-11

Oil pan with integrated capacitive sensor for measuring oil level

#198
20160202104
2016-07-14

Capacitance measurement device, capacitance-type sheet-shaped sensor apparatus, and capacitance-type liquid-level detector apparatus

#199
20160202103
2016-07-14

Probe for monitoring the surface level of a fluid in a vessel and a method of installing the probe in the vessel

#200
20160187179
2016-06-30

Sealed head construction for liquid level transducers

#201
20160187173
2016-06-30

Oil level detecting apparatus and control method thereof, oil flow detecting apparatus and control method thereof, method for control oil return using oil level and oil flow

#202
20160146656
2016-05-26

Fill level measurement system

#203
20160121359
2016-05-05

Adhesive dispensing device having optimized reservoir and capacitive level sensor

#204
20160114590
2016-04-28

Device for measuring a level in a tank

#205
20160109398
2016-04-21

Method and system of monitoring electrolyte levels and composition using capacitance or induction

#206
20160097668
2016-04-07

Fluid level sensor

#207
20160047683
2016-02-18

Capacitive fill level sensor

#208
20160038070
2016-02-11

Urine measurement device and method

#209
20160008749
2016-01-14

Fuel water separator having filter and sensor

#210
20150292933
2015-10-15

Method and device for the automated classification of a liquid as well as method and device for the automated adaption of presettings for a capacitive liquid level measurement

#211
20150285777
2015-10-08

Oil quality sensor and fryer with such oil quality sensor

#212
20150268656
2015-09-24

Drug dispensing device

#213
20150268230
2015-09-24

Analyzer, and method of detection liquid level in an analyzer

#214
20150235546
2015-08-20

Scenting nebulizer with remote management and capacitive liquid level sensing

#215
20150211915
2015-07-30

Capacitive sensing probe motion control system

#216
20150204708
2015-07-23

Device and method for measuring the depth of media

#217
20150190571
2015-07-09

Alert device for intravenous drip

#218
20150168200
2015-06-18

Oil detection device, compressor having the same and method of controlling the compressor

#219
20150114506
2015-04-30

Capacitive liquid level sensor

#220
20150114106
2015-04-30

Capacitive level gauge assembly for a container of pressurised or liquified gas

#221
20150082881
2015-03-26

Apparatus for determining and/or monitoring at least one process variable of a medium

#222
20150040311
2015-02-12

Grey water interface valve liquid level sensor system

#223
20150037170
2015-02-05

Solid state fluid level sensor

#224
20140371697
2014-12-18

Sensor with electrical contact protection for use in fluid collection canister and negative pressure wound therapy systems including same

#225
20140352429
2014-12-04

Electrostatic capacitance fluid level sensor

#226
20140305202
2014-10-16

Liquid level sensing systems

#227
20140230544
2014-08-21

Liquid level measuring device

#228
20140208846
2014-07-31

Method and device for capacitive fill level measurement of liquids or bulk materials

#229
20140175012
2014-06-26

Method and system of monitoring electrolyte levels and composition using capacitance or induction

#230
20140152326
2014-06-05

Method and system for fluid surface detection

#231
20140076923
2014-03-20

Adhesive dispensing device having optimized reservoir and capacitive level sensor

#232
20130333466
2013-12-19

Probe Unit

#233
20130297235
2013-11-07

Capacitive fluid level sensing

#234
20130291568
2013-11-07

System or method for measuring the phase of ammonia in a cooling system

#235
20130286064
2013-10-31

Fluid tilt sensor within ink tank supply item for micro-fluid applications

#236
20130283905
2013-10-31

Liquid state detection sensor

#237
20130269431
2013-10-17

Liquid level detecting device

#238
20130261539
2013-10-03

Capacitive fluid level sensing

#239
20130255676
2013-10-03

Vaporizer anesthesia level detector

#240
20130248525
2013-09-26

Liquid level detecting device and fuel tank structure

#241
20130207674
2013-08-15

Detecting a dielectric article

#242
20130205893
2013-08-15

Liquid level sensing system

#243
20130182742
2013-07-18

Sensing device for detecting material depth, liquid-level, and temperature

#244
20130174916
2013-07-11

Method and apparatus for capacitive sensing the top level of a material in a vessel

#245
20130167613
2013-07-04

Devices and systems for liquid level detection in hematology instruments, and methods related thereto

#246
20130152676
2013-06-20

Capacitive level gauge

#247
20130136672
2013-05-30

Electrically conductive pipette tip

#248
20130127156
2013-05-23

Apparatus and method for securing the connection of a coaxially arranged tube of a measuring probe unit of a fill-level measuring device to a process connection element

#249
20130118254
2013-05-16

Apparatus for determining and/or monitoring a predetermined fill level

#250
20130104649
2013-05-02

SENSOR DEVICE

#251
20130074595
2013-03-28

Fluid tilt sensor within ink tank supply item for micro-fluid applications

#252
20130074594
2013-03-28

Fluid tilt sensor within ink tank supply item for micro-fluid applications

#253
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