ClassID:

165321

G01F23/26 - 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

Sub-classes:
Recent Application in this class:
#1
20260139987
2026-05-21

A LEVEL SENSING SYSTEM AND A METHOD OF OPERATING A LEVEL SENSING SYSTEM

#2
20260085510
2026-03-26

DRAIN CLOG DETECTION

#3
20260009669
2026-01-08

FLUID LEVEL SENSOR

#4
20250353018
2025-11-20

METHOD FOR CAPACITIVE FLUID LEVEL DETECTION

#5
20250318580
2025-10-16

AEROSOL GENERATING DEVICE COMPRISING A LEVEL SENSOR

#6
20250314609
2025-10-09

SENSOR

#7
20250271291
2025-08-28

FLUID MEASURING RESERVOIR FOR BREAST PUMPS

#8
20250244027
2025-07-31

DEHUMIDIFIER APPLIANCE AND METHODS FOR DETECTING WATER LEVELS WITHIN A DEHUMIDIFIER APPLIANCE

#9
20250164426
2025-05-22

COMPENSATED CONDUCTIVITY DETERMINATION

#10
20250160429
2025-05-22

ELECTRONIC VAPING SYSTEM

#11
20250107736
2025-04-03

URINARY EVENT DETECTION, TRACKING, AND ANALYSIS

#12
20250041878
2025-02-06

A CENTRIFUGAL SEPARATOR AND AN INTERFACE LEVEL SENSOR

#13
20240344446
2024-10-17

SYSTEMS AND METHODS FOR DETERMINING WATER DEPTH AND EXPLOSIVE DEPTH IN BLASTHOLES

#14
20240335148
2024-10-10

WIRELESS STICKER TYPE ANTENNA FOR REMOTE SENSING OF URINE ACTIVITY

#15
20240207567
2024-06-27

RESPIRATORY GAS HUMIDIFICATION SYSTEM

#16
20240172981
2024-05-30

UROFLOWMETER

#17
20240108265
2024-04-04

Urinary event detection, tracking, and analysis

#18
20240060809
2024-02-22

HOUSING FOR CAPACITIVE LIQUID LEVEL SENSOR

#19
20230381784
2023-11-30

METHOD FOR CAPACITIVE FLUID LEVEL DETECTION

#20
20230211930
2023-07-06

Device for reminding and measuring material level inside a material container

#21
20230204401
2023-06-29

MAGNETICALLY INDUCTIVE FLOW MEASURING DEVICE AND METHOD FOR DETERMINING A FILL LEVEL

#22
20230184575
2023-06-15

SYSTEMS AND METHODS FOR DETECTING FILL-LEVELS IN CROP TRANSPORT RECEPTACLES USING CAPACITANCE-BASED SENSOR ASSEMBLIES

#23
20230168114
2023-06-01

Magnetically inductive flow measuring device and method for determining a fill level

#24
20230125762
2023-04-27

Detecting foam in a bioreactor plant

#25
20230083415
2023-03-16

Apparatus, system, and method of providing a content level monitor

#26
20230062056
2023-03-02

WATER SUPPLY DEVICE IN CABINET

#27
20230053372
2023-02-23

Container load quality monitoring and feedback system

#28
20230046866
2023-02-16

Methods of improving accuracy and precision of droplet metering using an on-actuator reservoir as the fluid input

#29
20220176442
2022-06-09

Method and measuring instrument for measurement of the casting level in a mould

#30
20220146243
2022-05-12

Systems and methods for determining water depth and explosive depth in blastholes

#31
20220136868
2022-05-05

Reduced-width inductive position sensor

#32
20220042858
2022-02-10

High voltage system comprising a temperature distribution determining device

#33
20210337878
2021-11-04

Electronic vaping system

#34
20210251295
2021-08-19

AEROSOL-GENERATING SYSTEM WITH ELECTRODES

#35
20210220601
2021-07-22

RESPIRATORY GAS HUMIDIFICATION SYSTEM

#36
20210146369
2021-05-20

Receptacle holders, systems, and methods for capacitive fluid level detection

#37
20210116291
2021-04-22

IoT system for returnable asset containing cryogenic liquid

#38
20210094735
2021-04-01

Device for reminding and measuring material level inside a material container

#39
20210094308
2021-04-01

PHYSICAL QUANTITY DETECTION DEVICE AND PRINTING APPARATUS

#40
20210077769
2021-03-18

Systems and method for an inductive anesthetic agent level sensor

#41
20200398290
2020-12-24

Methods of improving accuracy and precision of droplet metering using an on-actuator reservoir as the fluid input

#42
20200376850
2020-12-03

Method for operating a printing material processing machine by applying a varnish consumption prediction

#43
20200319011
2020-10-08

Capacitive fringe field oil level sensor with integrated humidity and temperature sensing

#44
20200209042
2020-07-02

Method and apparatus for determining a fill level of a storage container

#45
20200168927
2020-05-28

Method of outputting a water level of a capacitive level sensor for a water trap of a fuel cell system

#46
20200158554
2020-05-21

Method for process monitoring

#47
20200132532
2020-04-30

Wiring interface for fluid sensors

#48
20200124461
2020-04-23

Method for determining a process variable with a classifier for selecting a measuring method

#49
20200103456
2020-04-02

MEASUREMENT METHOD, DIAGNOSTIC DEVICE FOR DIAGNOSING TRANSMISSION LINE, DETECTION DEVICE, AND LINEAR SENSOR DEVICE

#50
20200096377
2020-03-26

Portable fluid level monitoring device and method

#51
20200024117
2020-01-23

Device for filling a container with a filling product

#52
20200011724
2020-01-09

Method for calculating a linearization curve for determining the fill level in a container and the use of a mobile end device for said method

#53
20200003602
2020-01-02

Fouling mitigation and measuring vessel with container fill sensor

#54
20190365308
2019-12-05

Urinary event detection, tracking, and analysis

#55
20190365307
2019-12-05

Uroflowmeter

#56
20190365306
2019-12-05

Testing device for a uroflowmeter

#57
20190293471
2019-09-26

Impedance limit switch for reducing EMC radiation

#58
20190293329
2019-09-26

Liquid level detection device and refrigeration cycle apparatus

#59
20190283894
2019-09-19

Fluid characterization system with integrated density compensation

#60
20190265093
2019-08-29

Impedance sensor and method for its operation

#61
20190227020
2019-07-25

Electrostatic capacitance detection device and power conversion apparatus

#62
20190186979
2019-06-20

LIQUID LEVEL MEASURING DEVICE

#63
20190107549
2019-04-11

Automated analyzer

#64
20190086353
2019-03-21

Method for detecting water in diesel fuel filters and water sensor for carrying out said method

#65
20190060923
2019-02-28

Methods of improving accuracy and precision of droplet metering using an on-actuator reservoir as the fluid input

#66
20190060577
2019-02-28

SMART SYRINGE

#67
20190056257
2019-02-21

METHOD FOR DETERMINING DENSITY OF A MEDIUM IN A TANK OF A HYBRID TANK MEASUREMENT SYSTEM

#68
20190041071
2019-02-07

Dehumidifier

#69
20180364089
2018-12-20

System for measuring level of a precursor in a container

#70
20180356267
2018-12-13

Magnetic-inductive flowmeter and method for operating a magnetic-inductive flowmeter

#71
20180348035
2018-12-06

Stratified flow multiphase flowmeter

#72
20180326661
2018-11-15

Non-contact level sensing for low dielectric constant inks

#73
20180321074
2018-11-08

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

#74
20180321073
2018-11-08

Oil level sensor tank for turbine engine

#75
20180313683
2018-11-01

Method and device for detecting a fluid contacting

#76
20180313675
2018-11-01

Liquid level sensor with improved removability

#77
20180304640
2018-10-25

Print head ink supply

#78
20180297318
2018-10-18

Composite tube with an embedded stranded wire and method for making the same

#79
20180292249
2018-10-11

Complementary apparatus for measuring urea water level

#80
20180214660
2018-08-02

Respiratory gas humidification system

#81
20180148276
2018-05-31

Systems, methods, and apparatus for crop input variety selection

#82
20180143060
2018-05-24

Structural unit for arrangement at a hydraulic fluid tank of a jet engine

#83
20180120142
2018-05-03

Wiring interface for fluid sensors

#84
20180095046
2018-04-05

Sensor for detecting a state of a fluid within a microfluidic plate, system for controlling a preparation of a sample including a fluid and method for detecting a state of a fluid within a microfluidic plate

#85
20180052031
2018-02-22

Capacitive fluid level sensor for rapid response

#86
20180031591
2018-02-01

Automatic analyzer and computer-readable recording medium storing program

#87
20180010947
2018-01-11

Body of level gauge with electrical lead extending therethrough

#88
20170370757
2017-12-28

Method for calculating a linearization curve for determining the fill level in a container the use of a mobile end device for said method

#89
20170363458
2017-12-21

Electric wave type biosensor

#90
20170328761
2017-11-16

Printed level sensor

#91
20170327949
2017-11-16

Liquid level indicator and liquid raw material vaporization feeder

#92
20170322067
2017-11-09

DEVICE AND METHOD FOR DETECTING WATER LEVEL OF WATER TRAP IN FUEL CELL

#93
20170307429
2017-10-26

Measuring arrangement

#94
20170279167
2017-09-28

Liquid level sensor for battery monitoring systems

#95
20170252683
2017-09-07

Clean-side water-separating filter element having bayonet connection, and fuel filter having a filter element of this type

#96
20170234715
2017-08-17

SENSOR SYSTEMS AND METHODS

#97
20170231278
2017-08-17

Aerosol-generating system with electrodes

#98
20170199070
2017-07-13

CYLINDER FOR PRESSURISED LIQUEFIED GAS AND A METHOD OF CALCULATING THE LIQUID VOLUME

#99
20170191861
2017-07-06

Sensor for detecting the level of a medium

#100
20170184436
2017-06-29

METHOD OF OPERATING A SENSOR ASSEMBLY FOR A FLUID TANK OF A MOTOR VEHICLE, AND CORRESPONDING SENSOR ASSEMBLY

#101
20170159970
2017-06-08

In-line heater

#102
20170144449
2017-05-25

Method and device for detecting ink leakage in an inkjet printing machine

#103
20170138976
2017-05-18

Systems and methods for detecting a liquid level

#104
20170138776
2017-05-18

Comparative fuel-level detection system

#105
20170122163
2017-05-04

Method of operating a fluid container arrangement, and fluid container arrangement

#106
20170115153
2017-04-27

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

#107
20170108209
2017-04-20

EVAPORATOR

#108
20170043095
2017-02-16

Multifunctional sensor

#109
20160377587
2016-12-29

Integrated active fuel characteristic sensor

#110
20160356637
2016-12-08

SENSOR TO DETECT CLOGGED DRAIN IN FREEZE/THAW APPLICATIONS

#111
20160349095
2016-12-01

Liquid level sensor measuring a characteristic indicative of inductive coupling

#112
20160349094
2016-12-01

Magnetic actuated contact using a coil system

#113
20160223381
2016-08-04

Limit level switch comprising an integrated position sensor

#114
20160202104
2016-07-14

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

#115
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

#116
20160187179
2016-06-30

Sealed head construction for liquid level transducers

#117
20160180690
2016-06-23

Device for reminding and measuring material level inside a material container

#118
20160175859
2016-06-23

Methods of improving accuracy and precision of droplet metering using an on-actuator reservoir as the fluid input

#119
20160154410
2016-06-02

Monitoring system and method

#120
20160149395
2016-05-26

LIQUID LEVEL CONTROL SWITCH DEVICE AND THE CONTROL CIRCUIT THEREOF

#121
20160146659
2016-05-26

Liquid consumption tracker

#122
20160121359
2016-05-05

Adhesive dispensing device having optimized reservoir and capacitive level sensor

#123
20160116322
2016-04-28

Method for monitoring at least one media-specific property of a medium

#124
20160074891
2016-03-17

Pitch-based control for sprayers and sprayer operations

#125
20160054165
2016-02-25

Liquid level measuring device

#126
20160041021
2016-02-11

CAPACITIVE LIQUID LEVEL DETECTION DEVICE

#127
20160033318
2016-02-04

Eddy current mold level measuring device and mold level measuring method

#128
20160025545
2016-01-28

Liquid consumption tracker

#129
20160003662
2016-01-07

Systems and methods for remotely measuring a liquid level using time-domain reflectometry (TDR)

#130
20150323372
2015-11-12

Temperature compensated transmission line based liquid level sensing apparatus and method

#131
20150260563
2015-09-17

Structural unit for arrangement on a hydraulic fluid tank of a jet engine

#132
20150242660
2015-08-27

Point of sale inductive systems and methods

#133
20150204709
2015-07-23

Multi-layer wireless sensor construct for use at electrically-conductive material surfaces

#134
20150168200
2015-06-18

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

#135
20150052995
2015-02-26

Water level sensor and heat exchanger sterilizing and humidifying apparatus having the same

#136
20150042482
2015-02-12

Non-battery operated container alert system

#137
20150040659
2015-02-12

CAPACITIVE FLUID LEVEL DETECTION SENSOR

#138
20150033847
2015-02-05

Non-invasive radio frequency liquid level and volume detection system and method using phase shift

#139
20150027204
2015-01-29

Respiratory gas humidification system

#140
20140366625
2014-12-18

Level measurements in metallurgical vessels

#141
20140352429
2014-12-04

Electrostatic capacitance fluid level sensor

#142
20140352428
2014-12-04

LIQUID PROPERTY DETECTING DEVICE

#143
20140331763
2014-11-13

Fuel level measurement using in-tank measuring system

#144
20140318236
2014-10-30

Liquid level detection system for a driveline component

#145
20140305194
2014-10-16

System for measurement of fluid levels in multi-phase fluids

#146
20140260600
2014-09-18

Liquid modulated antenna

#147
20140223992
2014-08-14

Apparatus and method for volume and mass estimation of a multiphase fluid stored at cryogenic temperatures

#148
20140123774
2014-05-08

Automatic analyzer

#149
20140104079
2014-04-17

Fuel tank monitoring system

#150
20140090451
2014-04-03

Systems and methods for measuring an interface level in a multi-phase fluid composition

#151
20140062461
2014-03-06

Liquid level detectors

#152
20130333466
2013-12-19

Probe Unit

#153
20130248525
2013-09-26

Liquid level detecting device and fuel tank structure

#154
20130209334
2013-08-15

System and method including analytical units

#155
20130196422
2013-08-01

Reaction vessel

#156
20130147465
2013-06-13

Device to detect the level of liquid metal in a casting apparatus and relative method

#157
20130143199
2013-06-06

System and method for controlling thermal cycler modules

#158
20130142711
2013-06-06

Reagent cartridge

#159
20130137164
2013-05-30

System and method including thermal cycler modules

#160
20130137110
2013-05-30

System and method including analytical units

#161
20130137109
2013-05-30

System and method including multiple processing lanes executing processing protocols

#162
20130137087
2013-05-30

SYSTEM AND METHOD INCLUDING ANALYTICAL UNITS

#163
20130136670
2013-05-30

Pipettor including compliant coupling

#164
20130132006
2013-05-23

System and method including analytical units

#165
20130130369
2013-05-23

Assay cartridge with reaction well

#166
20130125645
2013-05-23

FLEXIBLE FLUID LEVEL SENSOR

#167
20130061669
2013-03-14

Level detector for measuring foam and aerated slurry level in a wet flue gas desulfurization absorber tower

#168
20130038337
2013-02-14

Measurements in metallurgical vessels

#169
20120323503
2012-12-20

Measuring apparatus, control apparatus and measuring device for fill-level measuring

#170
20120291541
2012-11-22

DIGITAL FIELD-INDUCTION WATER-LEVEL INTELLIGENT SENSING SYSTEM AND ITS IMPLEMENTATION METHOD

#171
20120268139
2012-10-25

DEVICE FOR DETECTING A LEVEL

#172
20120253706
2012-10-04

System and method for monitoring liquid level in containers/reservoirs

#173
20120232471
2012-09-13

Non-invasive radio frequency medical fluid level and volume detection system and method

#174
20120227484
2012-09-13

Non-invasive radio frequency liquid level and volume detection system using phase shift

#175
20120168973
2012-07-05

Water level sensor and heat exchanger sterilizing and humidifying apparatus having the same

#176
20120167678
2012-07-05

HTA fluid level and fluid type measurement

#177
20120048011
2012-03-01

Sensor and method for measuring the surface level of a liquid phase metal

#178
20110259960
2011-10-27

Point of sale inductive systems and methods

#179
20110259953
2011-10-27

Point of sale inductive systems and methods

#180
20110234246
2011-09-29

Structural determination apparatus and method

#181
20110138787
2011-06-16

LIQUID REDUCTANT DOSING RESERVOIR AND METHOD FOR ITS MANUFACTURE

#182
20100313653
2010-12-16

Admittance meter for monitoring a medium

#183
20100295562
2010-11-25

Method, liquid supply unit, and measurement device for a level indicator

#184
20100263458
2010-10-21

SELF CONTAINED INLINE FIELD EFFECT FLUID DETECTION

#185
20100259416
2010-10-14

Method of determining a level of a fluid in a well

#186
20100193182
2010-08-05

Method of optimizing production of a well

#187
20100193177
2010-08-05

Fluid level sensor

#188
20100141285
2010-06-10

Apparatus for determining and/or monitoring a process variable

#189
20100106446
2010-04-29

Attribute sensing processes

#190
20100101317
2010-04-29

LID BASED AMOUNT SENSOR

#191
20100005880
2010-01-14

Apparatus for determining and/or monitoring a process variable

#192
20090293610
2009-12-03

Flexible guided wave level meter probe

#193
20090158842
2009-06-25

HTA fluid level and fluid type measurement

#194
20090090179
2009-04-09

Sensor with polymer substrate for use in corrosive liquids

#195
20090000374
2009-01-01

Method and apparatus to reject electrical interference in a capacitive liquid level sensor system

#196
20080229820
2008-09-25

Capacitive Gauge

#197
20080202745
2008-08-28

Fluid level sensing device and methods of using same

#198
20080184795
2008-08-07

Wireless sensing system for non-invasive monitoring of attributes of contents in a container

#199
20080184793
2008-08-07

POWDER LEVEL SENSOR UNIT FOR SPRAY COATING POWDER

#200
20080156801
2008-07-03

VESSEL HAVING LIQUID METERING APPARATUS

#201
20080028867
2008-02-07

State detection device

#202
20080011287
2008-01-17

Sensors with Integrated Generation of Solar Energy

#203
20070176334
2007-08-02

Apparatus for determination of an interface of a slag layer

#204
20070137315
2007-06-21

Method and apparatus to reject electrical interference in a capacitive liquid level sensor system

#205
20070079653
2007-04-12

Method and apparatus for detecting liquid levels in liquid-storage containers

#206
20070000321
2007-01-04

System and method for sensing the level and composition of liquid in a fuel tank

#207
20060243871
2006-11-02

Fixing system for a measuring device for monitoring and/or determination of a filling level

#208
20060225500
2006-10-12

Mechanical self-cleaning probe via bi-metallic or shape memory

#209
20060167644
2006-07-27

Field device and method for calibrating a field device

#210
20060152225
2006-07-13

Conductance control for detecting foam and/or an unstable fluid line

#211
20060124740
2006-06-15

Magnetic field response measurement acquisition system

#212
20060096396
2006-05-11

Methods and systems for determining a position of a probe

#213
20050223796
2005-10-13

"THE SEE LEVEL" An apparatus for monitoring the changing levels of fluid in a preexisting container at a remote location. (An Intelligent Dip Stick)

#214
20050092080
2005-05-05

Method and apparatus to reject electrical interference in a capacitive liquid level sensor system

#215
20050007239
2005-01-13

Magnetic field response measurement acquisition system

#216
17328742
2022-10-11

Method and apparatus for validating a capacitive fuel level sensor

#217
14174100
2016-07-26

Rising water alarms

#218
13709227
2015-11-10

Liquid level detection device