ClassID:

165388

G01F23/74 - 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 floats of the free float type without mechanical transmission elements using magnetically actuated indicating means for sensing changes in level only at discrete points

Recent Application in this class:
#1
20260133065
2026-05-14

CONTAINER LEVEL DETECTOR

#2
20240375812
2024-11-14

LEVEL READER DEVICE, LEVEL READER SYSTEM AND PACKAGE PRODUCING MACHINE COMPRISING THE LEVEL READER SYSTEM

#3
20240188739
2024-06-13

WIRELESS DRINK CONTAINER FOR MONITORING HYDRATION

#4
20230024079
2023-01-26

Device for the treatment of fluid mixtures

#5
20220268618
2022-08-25

Water leak/water flow detection system

#6
20220163369
2022-05-26

Tank maintenance access chamber

#7
20210289964
2021-09-23

Wireless drink container for monitoring hydration

#8
20210275846
2021-09-09

Adaptable suppression tank level sensor

#9
20210270663
2021-09-02

Adjustable liquid level indicators

#10
20210239510
2021-08-05

Validation of fluid level sensors

#11
20210088373
2021-03-25

DETECTOR DEVICE FOR DETECTING LIQUID SUCKED FROM A CONTAINER

#12
20210053547
2021-02-25

Method for the functional testing of a fluid level warning indicator

#13
20200363254
2020-11-19

Fluid level gauge or reservoir with built-in light source

#14
20200328036
2020-10-15

Interchangeable coolant sensor for vehicle applications and methods of manufacture and use thereof

#15
20200271506
2020-08-27

Full charge notification device of urea water tank for vehicle

#16
20200264032
2020-08-20

Unit for detecting the filling level of a liquid in a container, braking system, and method

#17
20200232840
2020-07-23

Level sensor assembly

#18
20200217707
2020-07-09

Fluid level sensor, fluid reserviour, and methods for sensing a fluid level

#19
20190301919
2019-10-03

UNIPOLAR RESISTIVE LADDER SENSOR

#20
20190274456
2019-09-12

Wireless drink container for monitoring hydration

#21
20190195672
2019-06-27

Fluid level gauge or reservoir with built-in light source

#22
20190184956
2019-06-20

Reservoir tank and vehicle brake apparatus

#23
20190170562
2019-06-06

Liquid level detection method and liquid level sensor

#24
20190161035
2019-05-30

Washer fluid tank with magnetically responsive sensors

#25
20190159341
2019-05-23

Electronic system comprising an intermediate printed circuit board for a fluid property sensor and fluid property sensor

#26
20190154466
2019-05-23

MAGNETIC FIELD GENERATOR AND POSITION SENSING ASSEMBLY

#27
20190056256
2019-02-21

Tank maintenance access chamber

#28
20190041252
2019-02-07

Liquid-surface detection device

#29
20190033118
2019-01-31

Multi-channel fluid level sensor

#30
20180348311
2018-12-06

Temperature compensation for magnetic field sensing devices and a magnetic field sensing device using the same

#31
20180209387
2018-07-26

Fuel filter

#32
20180202854
2018-07-19

Magnetic level indicator

#33
20180136031
2018-05-17

Multi-probe sender and tank having the same

#34
20180120143
2018-05-03

Float liquid level meter indicator

#35
20180111147
2018-04-26

Systems and methods for a material sensor for a material tank

#36
20180099857
2018-04-12

Refrigerator with automatic liquid dispenser

#37
20180058905
2018-03-01

Liquid level detection device

#38
20180050898
2018-02-22

Refrigerator with automatic liquid dispenser

#39
20180011498
2018-01-11

Liquid level control module and apparatus comprising same

#40
20170340147
2017-11-30

Wireless drink container for monitoring hydration

#41
20170314985
2017-11-02

Method and system for monitoring a state

#42
20170241806
2017-08-24

Magnetic field generator and position sensing assembly

#43
20170160123
2017-06-08

Continuous liquid level measurement detector for closed metal containers

#44
20170137277
2017-05-18

Refrigerator with automatic liquid dispenser

#45
20170074715
2017-03-16

Measuring device and method for measuring the level of a liquid in a container

#46
20160215910
2016-07-28

Universal mounting head construction for liquid level transducers and the like

#47
20160123791
2016-05-05

Magnetic float liquid level detector with vertically reversible attachment

#48
20160103010
2016-04-14

Magnet float liquid level detector with guided locking case

#49
20150355014
2015-12-10

Digital liquid-level sensor having at least one tunneling magnetoresistance switch

#50
20150261227
2015-09-17

Tank monitor control device

#51
20150253179
2015-09-10

Magnetic level gauge indicator with ultra-wide viewing angle

#52
20150153214
2015-06-04

Liquid level measuring device

#53
20150147190
2015-05-28

Test and monitoring system for a sump pump installation operable from a remote location

#54
20150143900
2015-05-28

Test and monitoring system for a sump pump installation having a self-monitoring liquid level sensing module

#55
20150143897
2015-05-28

Battery-powered backup power system for a sump pump installation

#56
20150143896
2015-05-28

Test and monitoring system for a sump pump installation including trend analysis of pump performance

#57
20150143895
2015-05-28

Test and monitoring system for a sump pump installation having a variable test cycle time out

#58
20150143894
2015-05-28

Test and monitoring system for a sump pump installation having a self-monitoring valve module for admitting water to the sump pit

#59
20150143893
2015-05-28

Test and monitoring system for a battery-powered DC pump installation

#60
20150068301
2015-03-12

Dual measurement liquid level transducer

#61
20150032391
2015-01-29

Control apparatus for detecting a variation of a fluid level in a tank

#62
20150013646
2015-01-15

Multifunctional fluid level and quality sensing device

#63
20140345977
2014-11-27

Fluid level detection device with stabilizer

#64
20140230543
2014-08-21

Two wire temperature and fluid level limit switch

#65
20140008296
2014-01-09

SEPTIC TANK MONITORING SYSTEM

#66
20130327625
2013-12-12

Magnetic float switch

#67
20130271120
2013-10-17

Position measuring system and associated measuring method for detecting an indicated position of a linearly movable guide element

#68
20130160871
2013-06-27

Variable orientation fluid level sensor with optional slosh guard

#69
20130063278
2013-03-14

Utility network management system

#70
20130049743
2013-02-28

FLOAT POSITION SENSOR

#71
20130037138
2013-02-14

System to detect anomalous fluids in an SCR system

#72
20130030677
2013-01-31

DRIVE SYSTEM WITH AN APPARATUS FOR INTERRUPTING THE OPERATION IN THE CASE OF AN IMMINENT LACK OF OPERATING MEDIUM

#73
20130006548
2013-01-03

Method for determining a fluid level in an internal combustion engine fluid tank

#74
20120279295
2012-11-08

Fuel senders and methods of assembling fuel senders

#75
20120269310
2012-10-25

Dynamic port for measuring reactor coolant pump bearing oil level

#76
20120199008
2012-08-09

Drip filter coffee maker

#77
20120116695
2012-05-10

Liquid level measuring system and method

#78
20120056749
2012-03-08

Vapor resistant tank level alarm system

#79
20110271754
2011-11-10

Liquid Level Transducer with Heating Unit

#80
20110239758
2011-10-06

METHOD FOR OPTIMIZING THE SWITCHING BEHAVIOUR OF A VESSEL WARNING DEVICE OF AN EQUALIZING VESSEL AND EQUALIZING VESSEL FOR A HYDRAULIC MOTOR VEHICLE BRAKE SYSTEM HAVING A VESSEL WARNING DEVICE WITH OPTIMIZED SWITCHING

#81
20110220227
2011-09-15

Auxiliary tank and mains water supply system

#82
20110185686
2011-08-04

Packaging and filling machine

#83
20110138907
2011-06-16

Multi-level liquid level magnetic sensor

#84
20110099955
2011-05-05

Packaging and filling machine

#85
20100329411
2010-12-30

Dynamic port for measuring reactor coolant pump bearing oil level

#86
20100307237
2010-12-09

FLUID LEVEL SENSOR

#87
20100288777
2010-11-18

Filter Coffee Maker

#88
20100218601
2010-09-02

Multiphase-liquid level data logger

#89
20100210155
2010-08-19

Water jet propulsion watercraft

#90
20100175718
2010-07-15

APPARATUS AND ASSOCIATED METHOD FOR CONTROLLING A WASHING FLUID LEVEL IN A DISHWASHER

#91
20100163468
2010-07-01

WATER TREATMENT APPARATUS

#92
20100132455
2010-06-03

Liquid Level Measuring Apparatus

#93
20100059344
2010-03-11

LIQUID LEVEL SENSOR

#94
20100044163
2010-02-25

Equalizing container for a hydraulic motor vehicle brake system

#95
20100043543
2010-02-25

Fuel sender with reed switch and latching magnets

#96
20100024544
2010-02-04

Liquid level detection apparatus for engine oil

#97
20100006484
2010-01-14

Vehicle Water Flow Level System with Display and Memory Controllers

#98
20090206176
2009-08-20

Fail-safe method and apparatus for aspirating and/or dispensing liquids in automated laboratory instruments

#99
20090195374
2009-08-06

Oil level detecting device

#100
20090134167
2009-05-28

One-piece molded brake fluid reservoir

#101
20090078507
2009-03-26

Lubrication system level control

#102
20090074616
2009-03-19

SPECIMEN ANALYZER AND LIQUID SUCTION ASSEMBLY

#103
20080202599
2008-08-28

Fuel level measurement and run time interpolation

#104
20080110256
2008-05-15

Level meter

#105
20070289994
2007-12-20

Container system

#106
20070284230
2007-12-13

Reservoir assembly

#107
20070283754
2007-12-13

Device for monitoring the level of a container

#108
20070251316
2007-11-01

Multiphase-liquid level data logger

#109
20070245824
2007-10-25

Liquid monitoring apparatus and method of using same for containers

#110
20070194941
2007-08-23

Oil level detection device for internal combustion engine

#111
20070171627
2007-07-26

Luminous container with magnetic charger

#112
20070058956
2007-03-15

Vapor-emitting device with an active end of use indicator

#113
20070058955
2007-03-15

VAPOR-EMITTING DEVICE WITH A SOLAR-POWERED, ACTIVE END OF USE INDICATOR

#114
20060207313
2006-09-21

Method of and apparatus for measuring a level of liquid in a reservoir, and apparatus for forming a layer on a substrate comprising a liquid level detector

#115
20060090552
2006-05-04

Fuel level measurement and run time interpolation

#116
20050268715
2005-12-08

Level sending unit with flexible sensor board for monitoring the liquid level in containers and storage tanks

#117
20050155427
2005-07-21

Low fluid level detector system

#118
20050126276
2005-06-16

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

#119
20050109105
2005-05-26

Liquid level indicator using lights

#120
20050062594
2005-03-24

Fuel overflow alarm system

#121
20050056092
2005-03-17

Liquid level indicator using lights

#122
13483528
2016-12-06

Liquid level transmitter utilizing low cost, capacitive, absolute encoders