ClassID:

165305

G01F23/18 - 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 measurement of pressure Indicating, recording or alarm devices actuated electrically

Sub-classes:
Recent Application in this class:
#1
20260094140
2026-04-02

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

#2
20260069105
2026-03-12

DEBRIS BASKET INDICATOR SYSTEM

#3
20250352018
2025-11-20

DEBRIS BASKET INDICATOR SYSTEM

#4
20250328154
2025-10-23

WATER LEVEL DETECTION VIA PRESSURE SENSING DEVICE

#5
20250314519
2025-10-09

Vision Float

#6
20250297880
2025-09-25

FILL LEVEL SENSING DEVICES AND ADDITIVE MANUFACTURING APPARATUSES INCLUDING SAME

#7
20250270749
2025-08-28

PRESSURE SENSING ASSEMBLY FOR A WASHING MACHINE APPLIANCE

#8
20250228598
2025-07-17

METHODS FOR ESTIMATING AN AMOUNT OF CRYOGEN IN A VESSEL, AND RELATED DEVICES AND SYSTEMS

#9
20250189354
2025-06-12

APPARATUS, SYSTEM, AND METHOD OF PROVIDING A SOLIDS LEVEL MONITOR

#10
20250123136
2025-04-17

CONTAINER CONTENT MONITORING DEVICE AND SYSTEM

#11
20250102389
2025-03-27

PUMP INLET PRESSURE STABILIZER FOR MEASURING STORAGE TANK LIQUID LEVEL USING PRESSURE MEASUREMENT

#12
20250093195
2025-03-20

HYBRID INVENTORY MEASUREMENT SYSTEMS AND METHODS FOR TANK GAUGING

#13
20250085151
2025-03-13

CALIBRATION METHOD FOR A LIQUID SYSTEM

#14
20250067587
2025-02-27

REMOTE FLUID MONITORING DEVICE SYSTEM AND METHOD

#15
20250000165
2025-01-02

DEVICE AND METHOD FOR CHECKING FILL LEVEL OF A CARTRIDGE

#16
20240359807
2024-10-31

ENHANCED VEHICLE FUEL QUANTITY INDICATION SYSTEM

#17
20240288298
2024-08-29

TANK SYSTEM

#18
20240184315
2024-06-06

WATER LEVEL DETECTION VIA PRESSURE SENSING DEVICE

#19
20240183700
2024-06-06

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

#20
20240176824
2024-05-30

FEEDBACK FOR WATER CONSUMING APPLIANCE

#21
20240167865
2024-05-23

LEVEL AND/OR DENSITY SENSOR DEVICE FOR LIQUID VESSELS

#22
20240086884
2024-03-14

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

#23
20240077309
2024-03-07

PHYSICAL ACTIVITY USER INTERFACES

#24
20230354914
2023-11-09

Device and method for checking fill level of a cartridge

#25
20230294838
2023-09-21

NON-CONTACT AIRCRAFT FUEL TANK GAUGING SYSTEM AND METHOD

#26
20230266378
2023-08-24

Fault gas detection system for a liquid filled high voltage transformer

#27
20230130817
2023-04-27

THE FIBER BRAGG GRATING INTELLIGENT DEVICE AND METHOD FOR MONITORING COAL LEVEL IN BUNKER

#28
20230084664
2023-03-16

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

#29
20230083415
2023-03-16

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

#30
20230074219
2023-03-09

Sensor Module

#31
20230044547
2023-02-09

OPEN CHANNEL FLOW MONITORING APPARATUS

#32
20230024870
2023-01-26

Device and method for checking fill level of a cartridge

#33
20220412790
2022-12-29

Level sensor

#34
20220397440
2022-12-15

Apparatus and method for sensing water level

#35
20220316934
2022-10-06

Field device with display means for the visual representation of determined states, and method

#36
20220262501
2022-08-18

MANAGEMENT OF THE DISTRIBUTION OF GAS CYLINDERS IN A HOSPITAL FACILITY

#37
20220163367
2022-05-26

Device for determining a filling level of a liquid in a container

#38
20220155127
2022-05-19

Enabling access to data

#39
20220137650
2022-05-05

Automated tank systems and methods for use in oil and gas extraction operation

#40
20220074779
2022-03-10

NONINTRUSIVE VESSEL LEVEL MEASUREMENT

#41
20220058607
2022-02-24

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

#42
20220042867
2022-02-10

Sensor for detecting pressure, filling level, density, temperature, mass and/or flow rate including nanowires arranged on coupling section

#43
20220026935
2022-01-27

Water level detection via pressure sensing device

#44
20220011148
2022-01-13

Cryogenic fluid measurement

#45
20210357454
2021-11-18

Feedback for water consuming appliance

#46
20210325229
2021-10-21

STOCK TANK WATER LEVEL MEASURING APPARATUS AND SYSTEM FOR MONITORING THE APPARATUSES

#47
20210310848
2021-10-07

CLOSED TANK FILL LEVEL SENSOR

#48
20210255022
2021-08-19

Curb for measuring flood depth in urban area

#49
20210215526
2021-07-15

Level indicator with protective cover

#50
20210207987
2021-07-08

CHEMICALLY RESISTANT SUBMERSIBLE LIQUID LEVEL MEASUREMENT DEVICE

#51
20210199247
2021-07-01

Oxy-acetylene work apparatus and method for determining the operating time of said apparatus

#52
20210110368
2021-04-15

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

#53
20210108956
2021-04-15

Device and method for checking fill level of a cartridge

#54
20210108955
2021-04-15

Flood sensing system and method

#55
20210096017
2021-04-01

Articulating levers for fluid sensor assembly cap

#56
20210088371
2021-03-25

TANK VOLUME MONITORING USING SENSED FLUID PRESSURE

#57
20210072067
2021-03-11

APPARATUS, SYSTEM, AND METHOD OF PROVIDING A SOLIDS LEVEL MONITOR

#58
20210072066
2021-03-11

APPARATUS, SYSTEM, AND METHOD OF PROVIDING A CONTENT LEVEL MONITOR

#59
20210025398
2021-01-28

Device for detecting the level of a well/tank and electric immersion pump with the device

#60
20210002072
2021-01-07

METHOD FOR OPERATING A CONTAINER, AND CONTAINER

#61
20200256717
2020-08-13

Method and system for detecting volumetric parameters of liquid in a container

#62
20200248638
2020-08-06

Liquified gaseous fuel storage tank level calibration control system

#63
20200103386
2020-04-02

Self-contained sensor module for hazardous locations

#64
20200103299
2020-04-02

Pressure transducer assembly with atmospheric reference

#65
20200088560
2020-03-19

LEVEL SENSING FOR DISPENSER CANISTERS

#66
20200064175
2020-02-27

Liquid pressure and level sensor systems and sensors, methods, and applications therefor

#67
20200056919
2020-02-20

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

#68
20200033898
2020-01-30

Water level detection via pressure sensing device

#69
20200003217
2020-01-02

PUMP STATUS DISPLAY MODULE, PUMP SYSTEM USING SAME AND METHODS RELATING THERETO

#70
20190350188
2019-11-21

System and method for electronic fluid measurement

#71
20190343107
2019-11-14

System and method for electronic fluid measurement

#72
20190316951
2019-10-17

Tank multi-level measurement using through the air millimeter wave radar

#73
20190316950
2019-10-17

Apparatus and method for measuring level

#74
20190293509
2019-09-26

Means for implementing a method for detecting and compensating for a rapid temperature change in a pressure measuring cell

#75
20190285023
2019-09-19

Systems and methods for monitoring and controlling fuel systems

#76
20190234788
2019-08-01

Submersible level sensing with transducer and jacketed cable

#77
20190185806
2019-06-20

Level and/or density sensor device for liquid vessels

#78
20190162574
2019-05-30

Wireless liquid gauging system

#79
20190101427
2019-04-04

SUMP PUMP MONITOR

#80
20190087510
2019-03-21

Feedback for water consuming appliance

#81
20190086252
2019-03-21

Device for sensing the pressure of a medium

#82
20190086251
2019-03-21

METHOD OF DETERMINING A FILLING LEVEL

#83
20190049280
2019-02-14

Systems and methods for determining a fuel level measurement of a fuel tank using optical sensors

#84
20190041416
2019-02-07

Single-piece transfer arm structure for analytical instrumentation

#85
20190025108
2019-01-24

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

#86
20190025099
2019-01-24

Liquid level detection device of liquid supplying facility, liquid level detection method of liquid supplying facility, and liquid supplying facility having the liquid level detection device

#87
20190024297
2019-01-24

Water level sensing apparatus and method for controlling clothes treatment apparatus comprising same

#88
20190001045
2019-01-03

Extracorporeal circulation management device with blood level detection in a reservoir without a sensor

#89
20180372524
2018-12-27

System, device and method for monitoring the liquid volume in a hydration pack

#90
20180356271
2018-12-13

Method and apparatus for detecting the liquid level in a liquid reservoir

#91
20180345308
2018-12-06

Pressure-based method and system for measuring the density and height of a fluidized bed

#92
20180328309
2018-11-15

Systems and methods for monitoring and controlling fuel systems

#93
20180319587
2018-11-08

Cap for refillable tote

#94
20180299314
2018-10-18

Integrated sensor unit for fuel gauging

#95
20180292250
2018-10-11

Device and method for checking fill level of a cartridge

#96
20180283924
2018-10-04

Liquid level monitoring system

#97
20180216983
2018-08-02

SOLID STATE FUEL LEVEL SENSOR

#98
20180209426
2018-07-26

Sump pump remote monitoring systems and methods

#99
20180202890
2018-07-19

Apparatus for analyzing the performance of fluid distribution equipment

#100
20180120141
2018-05-03

Device, container and method for measuring liquid volume in container based on pressure sensing

#101
20180112824
2018-04-26

Differential pressure filling system and method for a dosing vessel

#102
20180106656
2018-04-19

System for automatic determination of liquid volume

#103
20180066973
2018-03-08

Sensor assembly and liquid level detection device

#104
20180052030
2018-02-22

Method and system for fluid level determination from pressure measurement

#105
20180052029
2018-02-22

Systems and methods for determining a fuel level measurement of a fuel tank using optical sensor

#106
20180010945
2018-01-11

Sensor detection of the presence of an air core in a fluid conductor, and the flow rate of the fluid in the conductor

#107
20170350743
2017-12-07

Physical quantity measuring device

#108
20170306608
2017-10-26

Methods, systems, and software for providing a blocked sewer alert

#109
20170303496
2017-10-26

Milk meter

#110
20170199070
2017-07-13

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

#111
20170167909
2017-06-15

Fuel tank pressure sensor rationality testing for plug-in hybrid electric vehicles

#112
20170145763
2017-05-25

Drilling Rig and Method of Operating It

#113
20170112062
2017-04-27

Pneumatic grain level sensor and method therefore

#114
20170089745
2017-03-30

COMPENSATED FLUID LEVEL TRANSMITTER

#115
20160312601
2016-10-27

Fluid level determination apparatus and method of determining a fluid level in a hydrocarbon well

#116
20160310657
2016-10-27

Apparatus for extracorporeal blood treatment and a control method therefor

#117
20160308471
2016-10-20

Strain gauge pump control switch

#118
20160161319
2016-06-09

Tank liquid depth measurement method using a pressure sensor

#119
20160150771
2016-06-02

System and method for electronic fluid measurement

#120
20150323371
2015-11-12

Apparatus and method for determining the depth of liquid in a drum

#121
20150322951
2015-11-12

Sump pump remote monitoring systems and methods

#122
20150316063
2015-11-05

Sump pump remote monitoring systems and methods

#123
20150298891
2015-10-22

Liner-based liquid storage and dispensing systems with empty detection capability

#124
20150276457
2015-10-01

System and methods for fuel level inference

#125
20150211909
2015-07-30

APPARATUS AND METHOD FOR DETERMINING THE DEPTH OF LIQUID IN A DRUM

#126
20150100253
2015-04-09

Aircraft fluid gauging techniques using pressure measurements and optical sensors

#127
20150082882
2015-03-26

SYSTEM FOR DETERMINING THE LEVEL OF A LIQUID IN A CONTAINER

#128
20150033846
2015-02-05

Vehicle orientation device and method

#129
20140354437
2014-12-04

Emergency equipment power sources

#130
20140347178
2014-11-27

Wading vehicle water level display

#131
20140331762
2014-11-13

Sensor device for detecting a liquid and method therefor

#132
20140324288
2014-10-30

Wading depth estimation for a vehicle

#133
20140305201
2014-10-16

Electronic liquid level sensing device and gauge for liquid-immersed power transformers, reactors and similar equipment

#134
20140288793
2014-09-25

Wading vehicle advisory speed display

#135
20140156126
2014-06-05

Vehicle control system

#136
20140152468
2014-06-05

Gas supply warning and communication system

#137
20140119947
2014-05-01

Sump pump remote monitoring systems and methods

#138
20140085066
2014-03-27

Wading vehicle water level display

#139
20140037464
2014-02-06

Strain gauge pump control switch

#140
20140017095
2014-01-16

Strain gauge pump control switch

#141
20130336090
2013-12-19

Ultrasonic wading detection for a vehicle

#142
20130325369
2013-12-05

Process variable transmitter system with analog communication

#143
20130307679
2013-11-21

Wading vehicle depth measurement apparatus

#144
20130276524
2013-10-24

Volume measurement of a liquid, method and device

#145
20130197777
2013-08-01

Systems and methods for monitoring and controlling fuel systems

#146
20130092851
2013-04-18

LIQUID LEVEL INDICATION DEVICE

#147
20130068044
2013-03-21

Method and apparatus for measuring liquid quantity in bulk containers

#148
20130061669
2013-03-14

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

#149
20130056112
2013-03-07

Liner-based liquid storage and dispensing systems with empty detection capability

#150
20130054159
2013-02-28

WIRELESS TANK LEVEL MONITORING SYSTEM

#151
20120325022
2012-12-27

PRESSURE SENSING LIQUID LEVEL SENDER

#152
20120192646
2012-08-02

Storage tank assembly and system for storing waste cooking oil

#153
20120167676
2012-07-05

Wireless fuel level sensor for a vehicle fuel tank

#154
20120097567
2012-04-26

Apparatuses and methods for managing liquid volume in a container

#155
20120078137
2012-03-29

Apparatus and method for bedside collection of body fluids and automatic volume level monitoring

#156
20120067133
2012-03-22

Pressure sensor configuration for pressurized tank

#157
20120041605
2012-02-16

Flow and scrubbing pressure control system and methods for surface treating apparatus

#158
20120011930
2012-01-19

Water temperature profile measurement apparatus

#159
20110265576
2011-11-03

UROFLOWMETER ATTACHABLE TO TOILET

#160
20110247423
2011-10-13

Measuring apparatus for determining a pressure difference

#161
20110227742
2011-09-22

Method for measuring remaining hydrogen capacity of hydrogen storage canister incorporating RFID device

#162
20110181426
2011-07-28

Wireless fuel level sensor for a vehicle fuel tank

#163
20110176792
2011-07-21

Storage tank assembly and system for storing waste cooking oil

#164
20110174070
2011-07-21

STORAGE TANK ASSEMBLY AND SYSTEM FOR STORING WASTE COOKING OIL

#165
20110156918
2011-06-30

System for monitoring oil level and detecting leaks in power transformers, reactors, current and potential transformers, high voltage bushings and the like

#166
20110100119
2011-05-05

Method and apparatus for measuring liquid quantity in bulk containers

#167
20110096633
2011-04-28

Portable diver apparatus, comprising a portable computing device and an add on diver device

#168
20110077876
2011-03-31

TAP FOR MOUNTING ON CONTAINER FOR FLUID AND METHOD FOR REGISTERING THE LEVEL OF FLUID IN SAID CONTAINER

#169
20110025512
2011-02-03

Device and method for measuring material level in bin using flexible resistant members

#170
20110000295
2011-01-06

REMOTE LEVEL GAUGE ADAPTED FOR LIQUID FUEL TANK

#171
20100307236
2010-12-09

Pressure sensor for an electric household appliance and associated method

#172
20100242594
2010-09-30

Bubble column type hydrocarbon synthesis reactor, and slurry level detecting method

#173
20100218601
2010-09-02

Multiphase-liquid level data logger

#174
20100161252
2010-06-24

System and method for measuring a level of a liquid in a container

#175
20100024542
2010-02-04

Hydrogen storage tank and method of using

#176
20100011854
2010-01-21

Sand level monitoring system

#177
20090314798
2009-12-24

Liner-based liquid storage and dispensing systems with empty detection capability

#178
20090272188
2009-11-05

Binary Liquid Analyzer For Storage Tank

#179
20090237239
2009-09-24

Emergency equipment power sources

#180
20090216477
2009-08-27

MEASURING APPARATUSES AND METHODS OF USING THEM

#181
20090211984
2009-08-27

Salt tank monitor

#182
20090165477
2009-07-02

FILL LEVEL MEASURING DEVICE AND METHOD FOR MEASURING THE FILL LEVEL OF LIQUID FOOD IN A CONTAINER

#183
20090162211
2009-06-25

Strain gauge pump control switch

#184
20090000671
2009-01-01

DISHWASHER WITH INTEGRATED LIQUID LEVEL DETECTOR

#185
20080271527
2008-11-06

Liquid level sensor with level alarm

#186
20080213874
2008-09-04

WEIGHT MEASUREMENTS OF LIQUIDS IN FLEXIBLE CONTAINERS

#187
20080134776
2008-06-12

PRESSURE AND LIQUID LEVEL SENSING SYSTEM FOR TANK CONTAINERS AND TANK VEHICLES

#188
20080036615
2008-02-14

Automated level indicator for liquids container

#189
20080022777
2008-01-31

Capacitive pressure sensor with a cantilever member

#190
20070251316
2007-11-01

Multiphase-liquid level data logger

#191
20070194981
2007-08-23

Redundant level measurement in radar level gauging system

#192
20070174013
2007-07-26

Measuring apparatuses and methods of using them

#193
20070012102
2007-01-18

Method and system for determining level of fuel

#194
20060266111
2006-11-30

Liquid measurement system having a plurality of differential pressure probes

#195
20060243345
2006-11-02

Will call wireless tank level monitoring system

#196
20060070438
2006-04-06

Apparatus and method for determining a liquid level in a steam drum

#197
20060053900
2006-03-16

Metering apparatus for fuel injector flow test

#198
20060033673
2006-02-16

Integral sealed antenna mount for cellular based monitors

#199
20060033631
2006-02-16

Pressure based battery powered wireless cellular liquid level tank monitor and level reporting system

#200
20060032548
2006-02-16

Integral in tank vent construction for pressure based level monitors

#201
20050126276
2005-06-16

Method, system and program product for monitoring rate of volume change of coolant within a cooling system

#202
20050115314
2005-06-02

Fuel level sensor

#203
20050104604
2005-05-19

Process and a circuit arrangement for evaluating a measuring capacitance

#204
20050016267
2005-01-27

Electronic level gauge

#205
18749954
2025-03-25

Multi-tank indirect liquid level measurement system and method for holding tanks in a recreational vehicle

#206
18665198
2025-11-18

Debris basket indicator system

#207
17813331
2023-11-28

Methods and algorithms for liquid level measurement

#208
17651724
2023-01-17

Smart and cloud connected detection mechanism and real-time internet of things (IoT) system management

#209
15686593
2018-08-21

Real-time water-level monitoring system for dumping site of open-pit coal mine, and methods of establishment and use of the same

#210
14518777
2016-06-28

Electronic liquid level sensing device and gauge for liquid-immersed power transformers, reactors and similar equipment