ClassID:

165076

G01F1/661 - CPC Classification

Classification description:

Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters using light

Recent Application in this class:
#1
20260110616
2026-04-23

Automated Cell Sorting Stage and Methods For Using Same

#2
20260078686
2026-03-19

IN-FLIGHT MEASURED PROPULSION MASS FLOW AND THRUST ON AIRCRAFT

#3
20260071904
2026-03-12

GAS FLOW RATE ESTIMATION DEVICE, GAS FLOW RATE ESTIMATION METHOD, NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM STORING GAS FLOW RATE ESTIMATION PROGRAM, LEAKAGE GASDETECTION DEVICE, LEAKAGE GAS DETECTION METHOD, AND DETECTION DATA PROCESSING DEVICE

#4
20260029263
2026-01-29

BLOOD FLOW MEASUREMENT DEVICE

#5
20260024210
2026-01-22

Methods And Systems For Characterizing Fluids From A Patient

#6
20250347545
2025-11-13

Measuring System

#7
20250347543
2025-11-13

MIXED-PHASE FLUID MASS FLOW MEASUREMENT METHOD AND THROTTLING-TYPE PHOTON QUANTUM MIXED-PHASE FLOWMETER

#8
20250338815
2025-11-06

MILKING SYSTEM

#9
20250314509
2025-10-09

SYSTEM AND METHOD FOR SENSING ONE OR MORE FLUID FLOW PARAMETERS OF A FLUID WITHIN A PIPE

#10
20250264347
2025-08-21

MEASUREMENT DEVICE AND MEASUREMENT METHOD

#11
20250237636
2025-07-24

MILK MEASURING DEVICE

#12
20250207960
2025-06-26

WAIST-SHAPED THROTTLING PHOTON QUANTUM MISCIBLE PHASE FLOWMETER

#13
20250195746
2025-06-19

SYSTEM, METHOD, AND APPARATUS FOR MONITORING, REGULATING, OR CONTROLLING FLUID FLOW

#14
20250120342
2025-04-17

MATERIAL YIELD SENSOR ASSEMBLY AND METHOD OF MONITORING SAME

#15
20250043693
2025-02-06

IN-FLIGHT MEASURED PROPULSION MASS FLOW AND THRUST ON AIRCRAFT

#16
20250020585
2025-01-16

SYSTEM AND METHOD FOR OPEN-PATH SENSING OF A FLUID

#17
20240328843
2024-10-03

LIQUID PURIFICATION UNIT AND LIQUID PURIFICATION SYSTEM

#18
20240288291
2024-08-29

MEASUREMENT OF MULTI-PHASE WELLBORE FLUID

#19
20240273729
2024-08-15

Methods And Systems For Characterizing Fluids From A Patient

#20
20240176824
2024-05-30

FEEDBACK FOR WATER CONSUMING APPLIANCE

#21
20240109164
2024-04-04

MEMBRANE FAILURE DETECTION SYSTEM

#22
20240102835
2024-03-28

MACHINE LEARNING-BASED WELLBORE FLUID FLOW RATE PREDICTION

#23
20240049622
2024-02-15

SYSTEM AND METHOD FOR DETERMINING ROW CLEANER AGGRESSIVENESS OF A SEED-PLANTING IMPLEMENT

#24
20240044683
2024-02-08

FLOW IMAGING AND MONITORING FOR SYNCHRONIZED MANAGEMENT OF WIDE AREA DRAINAGE

#25
20240027244
2024-01-25

MEASUREMENT DEVICE, MEASUREMENT SYSTEM, NON-TRANSITORY COMPUTER-READABLE RECORDING MEDIUM, AND CALIBRATION METHOD FOR MEASUREMENT DEVICE

#26
20240011824
2024-01-11

Method and Apparatus for Optical Sensing

#27
20240011823
2024-01-11

Method and apparatus for optical sensing

#28
20240011808
2024-01-11

LASER DOPPLER VELOCIMETRY FLOW MEASUREMENT

#29
20230398293
2023-12-14

FLOW METER HAVING A VALVE

#30
20230392964
2023-12-07

ACOUSTIC DEVICES FOR MEASURING MULTI-PHASE WELLBORE FLUID

#31
20230366712
2023-11-16

MEASURING THE FLOW RATE OF FLUIDS WITH DIELECTRIC CONTRAST ANALYSIS

#32
20230354766
2023-11-09

MILK CHANNEL AND FEED INLET COUPLED THERETO, AND SYSTEM AND METHOD FOR CONSERVING WASH FLUID IN A WASHING PROCESS FOR CLEANING A MILKMETER SYSTEM

#33
20230349738
2023-11-02

MEASUREMENT DEVICE

#34
20230334669
2023-10-19

Methods and systems for characterizing fluids from a patient

#35
20230324297
2023-10-12

System and method for focusing color Schlieren diagnostics

#36
20230288239
2023-09-14

Measurement Of Fluid Flow Velocity With High Spatial And Temporal Resolution

#37
20230287766
2023-09-14

Production logging inversion based on LFDAS/DTS

#38
20230273056
2023-08-31

Ultrasonic flow meter assembly

#39
20230251119
2023-08-10

METHOD AND DEVICE FOR MEASURING A FLUX OF A HEAVY OIL-MISCIBLE PHASE FLUID

#40
20230243680
2023-08-03

MEASUREMENT MODULE AND MEASUREMENT DEVICE

#41
20230218820
2023-07-13

FLOW RATE MEASUREMENT AND CONTROL OF INFUSION DEVICES

#42
20230190121
2023-06-22

MEASUREMENT DEVICE AND ESTIMATION SYSTEM

#43
20230181818
2023-06-15

System, method, and apparatus for monitoring, regulating, or controlling fluid flow

#44
20230175874
2023-06-08

MEASUREMENT SYSTEM, MEASUREMENT MODULE, MEASUREMENT PROCESSING DEVICE, AND MEASUREMENT METHOD

#45
20230160730
2023-05-25

OPTICAL MEASUREMENT OF FLOW PARAMETERS

#46
20230160726
2023-05-25

MACHINE LOGIC MULTI-PHASE METERING USING DISTRIBUTED ACOUSTIC SENSING DATA

#47
20230111548
2023-04-13

Automated Cell Sorting Stage and Methods For Using Same

#48
20230043442
2023-02-09

Measurement system, measurement device, and measurement method to detect a direction in which fluid flows

#49
20230013891
2023-01-19

In-flight measured propulsion mass flow and thrust on aircraft

#50
20230012094
2023-01-12

SYSTEMS AND METHODS FOR FLUID SENSING USING PASSIVE FLOW

#51
20230003564
2023-01-05

Optical Device And Method For Measuring Flow Rate

#52
20220412927
2022-12-29

Regulating a detector flow of a field flow fractionator

#53
20220412784
2022-12-29

Measuring component concentrations of nonhomogeneous immiscible mixtures in multiphase flows using near-infrared (NIR) filter photometry

#54
20220390350
2022-12-08

METHOD AND SYSTEM FOR MEASURING FLOW AND COMPOSITION OF SINGLE AND MULTI-PHASE FLUIDS

#55
20220381594
2022-12-01

VOLUME FLOW MEASUREMENT OF MATERIAL USING 3D LIDAR

#56
20220376788
2022-11-24

LIGHT BASED CONTROL SYSTEM

#57
20220341319
2022-10-27

Wellbore tubular with local inner diameter variation

#58
20220327708
2022-10-13

Methods and systems for characterizing fluids from a patient

#59
20220290771
2022-09-15

Flow meter and related method

#60
20220283002
2022-09-08

APPARATUS FOR THE CONTINUOUS REMOTE MEASURING OF THE FLOWRATE OF WATER IN BULKHEAD-HOLDER OPENINGS FOR IRRIGATION

#61
20220268608
2022-08-25

Fluid measurement apparatus

#62
20220236164
2022-07-28

METHOD AND SYSTEMS FOR DETERMING DROP DELAY USING SCATTER SIGNALS ACROSS SPATIALLY SEPARATED LASERS

#63
20220214195
2022-07-07

FLOW RATE MEASURING DEVICE

#64
20220155116
2022-05-19

Optical fluid flow velocity measurement

#65
20220136344
2022-05-05

System and methods for the measurement of drilling mud flow in real-time

#66
20220057242
2022-02-24

Fluid Measurement Device

#67
20220039675
2022-02-10

MEASUREMENT DEVICE AND NON-TRANSITORY COMPUTER-READABLE RECORDING MEDIUM

#68
20220026460
2022-01-27

FLOW RATE SENSOR DEVICE AND FLOW RATE SENSOR DEVICE EQUIPPED WITH COVER

#69
20220026251
2022-01-27

Device and method for performing ultrasonic measurements of fluid properties

#70
20210401341
2021-12-30

Imaged-based uroflowmetry device

#71
20210399320
2021-12-23

DETERMINING THE MASS FLOW OF AN EXHAUST GAS CONSTITUENT OF A FUEL CELL

#72
20210381865
2021-12-09

Method and apparatus for assessing fluid flow

#73
20210381863
2021-12-09

Flow measurement by combining 3L echo with delta time-of-flight cross correlation

#74
20210372838
2021-12-02

Measuring the flow rate of fluids with dielectric contrast analysis

#75
20210365054
2021-11-25

Substrate liquid processing apparatus and substrate liquid processing method

#76
20210357454
2021-11-18

Feedback for water consuming appliance

#77
20210325238
2021-10-21

Method and apparatus for optical sensing

#78
20210293591
2021-09-23

Flow imaging and monitoring for synchronized management of wide area drainage

#79
20210239501
2021-08-05

MEASURING DEVICE AND MEASURING PROBE FOR A FLOWING FLUID

#80
20210238972
2021-08-05

Production logging inversion based on DAS/DTS

#81
20210236006
2021-08-05

OPTICAL MEASURING DEVICE

#82
20210127625
2021-05-06

Sampling apparatus for taking representative milk sample and method for taking representative milk samples

#83
20210125719
2021-04-29

System, method, and apparatus for monitoring, regulating, or controlling fluid flow

#84
20210116276
2021-04-22

Measuring component concentrations of nonhomogeneous immiscible mixtures in multiphase flows using near-infrared (NIR) filter photometry

#85
20210080389
2021-03-18

System and method for focusing color Schlieren diagnostics

#86
20210078027
2021-03-18

Liquid-dispensing system, apparatus and method

#87
20210072190
2021-03-11

Multi-phase flow-monitoring with an optical fiber distributed acoustic sensor

#88
20210062929
2021-03-04

Flow meter and related method

#89
20210041274
2021-02-11

Fluid measurement apparatus, fluid measurement method, and program

#90
20210033439
2021-02-04

Flow imaging and monitoring for synchronized management of wide area drainage

#91
20210033438
2021-02-04

Fluid measurement apparatus, fluid measurement method, and program

#92
20210025742
2021-01-28

Flow rate-velocity calculator, flow rate-velocity sensor device, flow rate device, and flow rate-velocity calculation method

#93
20210003433
2021-01-07

Regulating a detector flow of a field flow fractionator

#94
20200380684
2020-12-03

Methods and systems for characterizing fluids from a patient

#95
20200360604
2020-11-19

Gravity Infusion Control System

#96
20200347949
2020-11-05

Flow meier having a valve

#97
20200309662
2020-10-01

Liquid debris sensor and system

#98
20200284628
2020-09-10

Optical measurement apparatus, optical measurement method, computer program, and recording medium

#99
20200268303
2020-08-27

UROFLOWMETRY AND FECAL FLOWMETRY SYSTEM

#100
20200249058
2020-08-06

Device and method for monitoring material flow parameters along a passage

#101
20200218064
2020-07-09

Arrangement and method for disturbance correction for imaging flow measuring processes

#102
20200200577
2020-06-25

Method and apparatus for determining the absolute value of the flow velocity of a particle-transporting medium

#103
20200188586
2020-06-18

Flow rate measurement and control of infusion devices

#104
20200166390
2020-05-28

Containment system for sensing elements

#105
20200158545
2020-05-21

Automated set-up for cell sorting

#106
20200132528
2020-04-30

Measurement of fluid flow velocity with high spatial and temporal resolution

#107
20200081027
2020-03-12

Flow-through pipe adapter for optical flow measurement

#108
20200025305
2020-01-23

Flow meter

#109
20190390988
2019-12-26

Method and system for measuring steam mass flow

#110
20190338621
2019-11-07

Production logging inversion based on DAS/DTS

#111
20190331523
2019-10-31

Method and apparatus for optical sensing

#112
20190331511
2019-10-31

Sensor probe having a circuit housing fixable at a plurality of rotation positions

#113
20190293557
2019-09-26

Measuring apparatus

#114
20190293543
2019-09-26

Method and apparatus for measuring the properties of a liquid

#115
20190293464
2019-09-26

Structure of flow measurement sensor based on time-of-flight and method for installation thereof

#116
20190277753
2019-09-12

Systems and methods for multispectral imaging and gas detection using a scanning illuminator and optical sensor

#117
20190257678
2019-08-22

Spray pattern monitoring system

#118
20190226325
2019-07-25

Flow velocity meter and method of measuring flow velocity of a fluid

#119
20190195725
2019-06-27

Hydrocarbon leak imaging and quantification sensor

#120
20190176166
2019-06-13

Flotation method

#121
20190120673
2019-04-25

Optical flow meter for determining a flow rate of a liquid

#122
20190120672
2019-04-25

Fiber optical fabry-perot flow test device and test method with local bending diversion structure

#123
20190087510
2019-03-21

Feedback for water consuming appliance

#124
20190049029
2019-02-14

Flow meter and related method

#125
20180356440
2018-12-13

Laser radar device

#126
20180355872
2018-12-13

METER-TYPE MAGNETIC PUMP AND MEASURING MODULE THEREOF

#127
20180338690
2018-11-29

MEASURING DEVICE INCLUDING LIGHT SOURCE, PHOTODETECTOR, AND CONTROL CIRCUIT

#128
20180245957
2018-08-30

Optical fiber cable

#129
20180238726
2018-08-23

Flow imaging and monitoring for synchronized management of wide area drainage

#130
20180238169
2018-08-23

Real-time control of diverters

#131
20180231498
2018-08-16

Multi-phase flow-monitoring with an optical fiber distributed acoustic sensor

#132
20180224012
2018-08-09

Flow meter

#133
20180216979
2018-08-02

Monitoring of fluid flow in an open channel using an optical fibre sensor

#134
20180206465
2018-07-26

Mobile insect release system

#135
20180202846
2018-07-19

Automated set-up for cell sorting

#136
20180193559
2018-07-12

Dripping detection apparatus

#137
20180188167
2018-07-05

System and method for focusing color Schlieren diagnostics

#138
20180177945
2018-06-28

Flow rate measurement and control of infusion devices

#139
20180088054
2018-03-29

Detecting the presence of liquid in a high pressure gas pipeline

#140
20180045650
2018-02-15

Fiber optic system for measuring a multiphase flow

#141
20180038501
2018-02-08

Flow meter

#142
20180036755
2018-02-08

Liquid-dispensing system, apparatus and method

#143
20180031414
2018-02-01

Method and apparatus for optical sensing

#144
20180000364
2018-01-04

LIGHT-EMITTING ELEMENT, DETECTION DEVICE, AND PROCESSING APPARATUS

#145
20170336281
2017-11-23

Hydrocarbon leak imaging and quantification sensor

#146
20170336248
2017-11-23

Optical fiber vibration measurement system in multiphase flows with related method to monitor multiphase flows

#147
20170335988
2017-11-23

Flow metering using a difference image for liquid parameter estimation

#148
20170307650
2017-10-26

Apparatus for measuring fluid speed

#149
20170248453
2017-08-31

Sensor Unit for Measuring the Mass Flow of the Solid Phase of Biogenic Multi-Phase Flows and Fluidic Parameters of the Gaseous Phase

#150
20170234717
2017-08-17

Water amount measurement device and water amount monitoring system

#151
20170191363
2017-07-06

Distributed fiber optic monitoring of vibration to generate a noise log to determine characteristics of fluid flow

#152
20170175465
2017-06-22

Flow monitoring using distributed strain measurement

#153
20170146686
2017-05-25

Adaptive feedback for phase estimation and adjustment

#154
20170100888
2017-04-13

Additive manufacturing system and method for printing three-dimensional parts using velocimetry

#155
20170082484
2017-03-23

Method and apparatus for optical sensing

#156
20170082470
2017-03-23

Flow imaging and monitoring for synchronized management of wide area drainage

#157
20170082465
2017-03-23

Optical sensor and method of use

#158
20170082464
2017-03-23

Method and apparatus for optical sensing

#159
20170074750
2017-03-16

Measuring air flows along a wall

#160
20170052050
2017-02-23

Fluid inflow

#161
20170052049
2017-02-23

Fluid inflow

#162
20170010209
2017-01-12

Systems and methods for near-infrared based water cut monitoring in multiphase fluid flow

#163
20160335779
2016-11-17

Methods and systems for characterizing fluids from a patient

#164
20160327448
2016-11-10

Apparatus and method for non-intrusive off-body measurements in hypersonic flight experiments

#165
20160312553
2016-10-27

Non-contact flow rate measurement of fluid using surface feature image analysis

#166
20160258796
2016-09-08

Automated set-up for cell sorting

#167
20160258795
2016-09-08

Optical fiber cable

#168
20160231348
2016-08-11

Laser anemometry system and method

#169
20160216142
2016-07-28

Methods and apparatus to determine airflow conditions at an inlet of an engine

#170
20160216141
2016-07-28

Methods and apparatus for fluid flow measurement

#171
20160169712
2016-06-16

Method and apparatus for optical sensing

#172
20160153825
2016-06-02

Method and system for determining aerodynamic loads from downstream flow properties

#173
20160143211
2016-05-26

Wireless flow monitoring system for an air seeder

#174
20160131627
2016-05-12

Reaction carrier, measuring system and measuring method for determining gas and particle concentrations, and optical flow sensor

#175
20160131272
2016-05-12

Flow meter having a valve

#176
20160106152
2016-04-21

Electronic cigarette and air switch thereof

#177
20160073063
2016-03-10

Flow meter using a dynamic background image

#178
20160063353
2016-03-03

Flow metering using a difference image for liquid parameter estimation

#179
20160061641
2016-03-03

Flow meter having a background pattern with first and second portions

#180
20160055649
2016-02-25

Flow meter and related system and apparatus

#181
20160041452
2016-02-11

Optical device, lidar device and imaging device

#182
20160029942
2016-02-04

Devices, systems, and methods for obtaining and analyzing urine flow rate data using acoustics and software

#183
20160018247
2016-01-21

Oval gear meter

#184
20150330818
2015-11-19

Methods and apparatus for ultrasonic fluid flow measurement and fluid flow data analysis

#185
20150323559
2015-11-12

Method for determining the speed of a rotocraft relative to the surrounding air

#186
20150192436
2015-07-09

Optical sensor and method of use

#187
20150181800
2015-07-02

Sensor for air cart metering system

#188
20150177113
2015-06-25

Fine particle measurement device, and laminar flow monitoring method and fine particle analysis method in fine particle measurement device

#189
20150116696
2015-04-30

Method and system for determining a velocity of a relative movement between an object and a fluidal medium

#190
20150090049
2015-04-02

Flow imaging and monitoring for synchronized management of wide area drainage

#191
20140324366
2014-10-30

Systems and methods for analyzing flowback compositions in real time

#192
20140309795
2014-10-16

Automated set-up for cell sorting

#193
20140294041
2014-10-02

Method and system for determining flow distribution through a component

#194
20140245839
2014-09-04

Powder flow detection

#195
20140200838
2014-07-17

Water Saving Device

#196
20140069207
2014-03-13

METHODS AND APPARATUS FOR FLUID FLOW MEASUREMENT

#197
20140060203
2014-03-06

FLUID FLOW VELOCITY AND TEMPERATURE MEASUREMENT

#198
20140002640
2014-01-02

Flow rate measuring apparatus

#199
20130298635
2013-11-14

Techniques for distributed acoustic sensing

#200
20130228689
2013-09-05

Gas flow meter and method for measuring velocity of gas

#201
20130151188
2013-06-13

Method and system for non-invasively monitoring fluid flow in a subject

#202
20130146757
2013-06-13

Multi-channel infrared optical phase fraction meter

#203
20130094012
2013-04-18

METHOD AND APPARATUS FOR MEASURING THE FLOW VELOCITY BY MEANS OF A PLASMA

#204
20130090564
2013-04-11

Light detecting apparatus and fluid measuring apparatus

#205
20130088716
2013-04-11

Powder flow detection

#206
20130061688
2013-03-14

Fluid flow monitor

#207
20130044211
2013-02-21

SYSTEM FOR MEASURING A MULTIPHASE FLOW

#208
20130030722
2013-01-31

MOBILE FLOW RATE MEASURING SYSTEM AND METHOD

#209
20120323502
2012-12-20

Flow volume measurement device and flow velocity measurement device

#210
20120279313
2012-11-08

Fluid flow velocity and temperature measurement

#211
20120162639
2012-06-28

Optical sensor and method of use

#212
20120152032
2012-06-21

Drip monitor

#213
20120060615
2012-03-15

Method and apparatus for optical sensing

#214
20120002189
2012-01-05

APPARATUS FOR DETERMINING A FLOW PROPERTY OF A FLUID

#215
20110301899
2011-12-08

Method for calibrating a device for measuring phase fractions of polyphase fluid under flow conditions, measuring method, and related device

#216
20110247431
2011-10-13

Cartridge Flow Transducer

#217
20110116074
2011-05-19

Measurement of speed or vibration characteristics using a LIDAR device with heterodyne detection

#218
20100313674
2010-12-16

Apparatus and method for metering flare gas

#219
20100312500
2010-12-09

Array of Electromagnetic Radiation Sensors with On-Chip Processing Circuitry

#220
20100312499
2010-12-09

System for measuring liquid flow rates

#221
20100304010
2010-12-02

Powder feed rate sensor

#222
20100294917
2010-11-25

Apparatus and Methods for Imaging

#223
20100270464
2010-10-28

Methods and apparatus to optically determine velocities of downhole fluids

#224
20100218525
2010-09-02

Refrigerator

#225
20100134781
2010-06-03

System and method for motion based velocity discrimination for doppler velocimeters

#226
20100033711
2010-02-11

METHOD OF MEASURING PHYSICAL QUANTITY OF OBJECT TO BE MEASURED, AND METHOD OF CONTROLLING THE SAME

#227
20090321664
2009-12-31

Method for the continuous production of water-absorbent polymer particles

#228
20090314102
2009-12-24

Polarization based fiber optic downhole flowmeter

#229
20090302242
2009-12-10

Optical coupled sensors for harsh environments

#230
20090219507
2009-09-03

System and method for motion based velocity discrimination for doppler velocimeters

#231
20090219506
2009-09-03

Heterodyne laser doppler probe and measurement system using the same

#232
20090138215
2009-05-28

Photoacoustic doppler flow sensing and imaging

#233
20090103073
2009-04-23

Device and method for flow state observation

#234
20090033911
2009-02-05

Laser anemometry with improved eye safety

#235
20080225264
2008-09-18

Fiber optic flow sensing device and method

#236
20080200865
2008-08-21

Dialysis system having optical flowrate detection

#237
20080144003
2008-06-19

System for measuring non-volatile residue in ultra pure water

#238
20080135761
2008-06-12

Multi-channel infrared optical phase fraction meter

#239
20080088819
2008-04-17

Miniature opto-mechanical anemometer

#240
20080058647
2008-03-06

Means for Performing Measurements in a Vessel

#241
20080038674
2008-02-14

Composite polymer microfluidic control device

#242
20080031807
2008-02-07

Fine hollow powder, thin flaky titanium oxide powder obtained by pulverization of the fine hollow powder and processes for producing the same

#243
20080008645
2008-01-10

Fine hollow powder, thin flaky titanium oxide powder obtained by pulverization of the fine hollow powder and processes for producing the same

#244
20080003176
2008-01-03

Fine hollow powder, thin flaky titanium oxide powder obtained by pulverization of the fine hollow powder and processes for producing the same

#245
20070272309
2007-11-29

Composite Polymer Microfludic Control Device

#246
20070107512
2007-05-17

Flow state observation device and flow state observation method

#247
20070064218
2007-03-22

Optical flow meter for measuring gases and liquids in pipelines

#248
20060261295
2006-11-23

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