ClassID:

165383

G01F23/686 - 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 electrically actuated indicating means using opto-electrically actuated indicating means

Recent Application in this class:
#1
20260079039
2026-03-19

LIQUID LEVEL DETECTOR SYSTEM

#2
20260035170
2026-02-05

SYSTEM FOR MONITORING A FLOATING ROOF OF A STORAGE TANK

#3
20250375074
2025-12-11

Liquid Level Detection Apparatus, Sewage Tank Having Liquid Level Detection Apparatus, and Cleaning Device

#4
20230280203
2023-09-07

System and method to measure mud level in a wellbore annulus

#5
20230083515
2023-03-16

INCUBATION CASSETTE AND MICROPLATE FOR REDUCING FLUID EVAPORATION OUT OF WELLS OF A MICROPLATE

#6
20220228983
2022-07-21

LIQUID SENSOR AND HYDRAULIC UNIT

#7
20220163367
2022-05-26

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

#8
20210364336
2021-11-25

System and method to measure mud level in a wellbore annulus

#9
20210239510
2021-08-05

Validation of fluid level sensors

#10
20200355540
2020-11-12

Sensor arrangements, sensor systems, and methods for determining height of liquids in tanks

#11
20200340848
2020-10-29

Tank gauging and inventory management system

#12
20190204136
2019-07-04

Hydrogen peroxide reservoir assembly including a float position sensor for determining liquid level

#13
20180153129
2018-06-07

Milk meter

#14
20180128669
2018-05-10

Indication type level indicator including total reflection prism

#15
20130030677
2013-01-31

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

#16
20110232380
2011-09-29

SYSTEMS, METHOD AND DEVICES FOR MONITORING FLUIDS

#17
20110156917
2011-06-30

Electronic device and method for monitoring water level

#18
20100163567
2010-07-01

WATER INTAKE AMOUNT MANAGEMENT DEVICE

#19
20090277264
2009-11-12

Assembly for measuring the specific gravity and level of a liquid

#20
20080019874
2008-01-24

Systems, method and devices for monitoring fluids

#21
20080011970
2008-01-17

Optical non-contact sensor for detecting material level in a container

#22
20070236914
2007-10-11

Float activated optical switch

#23
20060174971
2006-08-10

Method and system for refuelling

#24
20060117847
2006-06-08

Liquid quantity sensing device

#25
20060110292
2006-05-25

Systems, method and devices for monitoring fluids

#26
20050007253
2005-01-13

Oil tank sight glass monitor

#27
19068439
2025-08-19

Water level detection method, device, equipment, storage medium and system