ClassID:

165049

G01F1/36 - 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 using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction

Sub-classes:
Recent Application in this class:
#1
20260049852
2026-02-19

QUANTIFICATION OF LIQUID FLOW RATE AND CORRECTION OF GAS FLOW RATE IN THE PRESENCE OF LIQUID IN A GAS PIPELINE

#2
20260041029
2026-02-12

SYSTEMS AND METHODS FOR SELECTIVE MATERIAL PLACEMENT, SENSING, AND CONTROL

#3
20250321128
2025-10-16

FLOW RATE MEASUREMENT METHOD FOR SPIRAL THROTTLING COMPONENT

#4
20250244153
2025-07-31

FLOW SWITCH

#5
20250235353
2025-07-24

Determining Fluid Flow Rate in a Phacoemulsification Probe

#6
20250230878
2025-07-17

VALVE ELEMENT, METHOD FOR OPERATING THE VALVE ELEMENT, AND PROCESS VALVE

#7
20250224263
2025-07-10

SYSTEM FOR ELECTRONIC MEASUREMENT OF MILK IMBIBED BY AN INFANT

#8
20250207959
2025-06-26

PRESSURE FLOW RATE SENSOR, FLOW RATE CALCULATION DEVICE, FLOW RATE CALCULATION METHOD, FLOW RATE CALCULATION PROGRAM, AND FLUID CONTROL DEVICE

#9
20250180383
2025-06-05

ENERGY AUTONOMOUS GAS FLOW METER

#10
20250146851
2025-05-08

FLOW CONTROL SYSTEM, METHOD, AND APPARATUS

#11
20250146850
2025-05-08

INLINE VISCOSITY MEASURING METHOD AND AN ASSOCIATED INLINE VISCOSITY MEASURING DEVICE

#12
20250109975
2025-04-03

OBSTRUCTION COMPONENT FOR A PROCESS FLUID FLOW MEASUREMENT DEVICE

#13
20250052599
2025-02-13

GAS BASED FLOW SENSOR

#14
20250027806
2025-01-23

METHOD, DEVICE, STORAGE MEDIUM, AND ELECTRONIC EQUIPMENT FOR DETECTING PIPE WALL DIRT

#15
20250020495
2025-01-16

FLOW RATE CALCULATION DEVICE AND FLOW RATE CALCULATION METHOD

#16
20240401992
2024-12-05

CORRECTION OF GAS FLOW IN THE PRESENCE OF LIQUID IN A GAS PIPELINE

#17
20240369394
2024-11-07

High-detection accuracy differential flowmeter capable of being repeatedly disinfected

#18
20240271982
2024-08-15

TRANSMITTER MOUNTING BRACKET USING PROCESS FLANGE STUDS

#19
20240255341
2024-08-01

Flow metrology calibration for improved processing chamber matching in substrate processing systems

#20
20230349740
2023-11-02

Ultrasonic fluid meter incorporating two pressure sensors

#21
20230321370
2023-10-12

SYSTEMS AND METHODS FOR INHALER TESTING

#22
20230251158
2023-08-10

Ecoair valve with pneumatic solenoid to provide auto zero function for air velocity pressure sensor

#23
20230119021
2023-04-20

Energy correlation flow meters

#24
20220412783
2022-12-29

System and method for measuring fluid flow from a syringe

#25
20220390269
2022-12-08

Abnormality detection method for flow rate control device, and flow rate monitoring method

#26
20220381360
2022-12-01

Pilot-operated relief valve assembly

#27
20220349736
2022-11-03

AIR FLOW RATE MEASURING DEVICE

#28
20220334023
2022-10-20

QUANTITATIVE METHOD OF MEASURING LEAKAGE VOLUME

#29
20220333971
2022-10-20

Arrangement and method for identifying and correcting a faulty volumetric flow measurement

#30
20220316973
2022-10-06

Differential pressure sensor

#31
20220266417
2022-08-25

Cleaning liquid supply device, cleaning unit, and storage medium storing program

#32
20220240442
2022-08-04

SYSTEMS AND METHODS FOR SELECTIVE MATERIAL PLACEMENT, SENSING, AND CONTROL

#33
20220240441
2022-08-04

SYSTEMS AND METHODS FOR SELECTIVE MATERIAL PLACEMENT, SENSING, AND CONTROL

#34
20220228896
2022-07-21

Pressure control system, pressure control method, and pressure control program

#35
20220155111
2022-05-19

Energy autonomous gas flow meter

#36
20220128390
2022-04-28

Method and apparatus for measuring wet gas utilizing an augmented Coriolis flow meter

#37
20220082415
2022-03-17

MASS FLOW CONTROLLER

#38
20220049703
2022-02-17

Centrifugal pump unit

#39
20220003583
2022-01-06

Differential pressure metering apparatus for a flow restrictor pipe section

#40
20210404273
2021-12-30

Open channel flow from multiple pressure sensors

#41
20210325274
2021-10-21

Ecoair valve with pneumatic solenoid to provide auto zero function for air velocity pressure sensor

#42
20210325220
2021-10-21

Device for measuring mass flow rate of multiphase flow based on ray coincidence measurement

#43
20210293592
2021-09-23

Systems, methods, and apparatus to measure multiphase flows

#44
20210293590
2021-09-23

Liquid Measurement Device for a Tank

#45
20210262840
2021-08-26

Fluid flow rate measurement device

#46
20210223798
2021-07-22

Systems and methods for flow sensor back pressure adjustment for mass flow controller

#47
20210223797
2021-07-22

Systems and methods for flow sensor back pressure adjustment for mass flow controller

#48
20210187576
2021-06-24

Method of metal mask and manufacturing method of metal mask

#49
20210123789
2021-04-29

Real time flow rate meter

#50
20210101165
2021-04-08

Method for detection of fluid flow

#51
20210080981
2021-03-18

Valve assembly and system used to control flow rate of a fluid

#52
20210072060
2021-03-11

Real-time measurement of two-phase mass flow rate and enthalpy using pressure differential devices

#53
20210072013
2021-03-11

Boundary layer probe, measuring assembly, and method for determining a fluid flow

#54
20210062625
2021-03-04

Landfill gas extraction control system throttle

#55
20210048324
2021-02-18

Time-accurate CFD enhanced interpretation of strain-based flow measurement

#56
20210041281
2021-02-11

Device and method for air quantity recording

#57
20200400470
2020-12-24

Flow control system, method, and apparatus

#58
20200393443
2020-12-17

Gas constituent measuring apparatus

#59
20200332917
2020-10-22

Flow resistance insert and a flow rate measuring or flow rate control means

#60
20200319012
2020-10-08

Instrument calibration device and calibration method using same

#61
20200291970
2020-09-17

Method to automatically detect parameter for pressure dynamics control

#62
20200222917
2020-07-16

Portable multi-nozzle air flow meter

#63
20200209023
2020-07-02

Differential pressure measuring arrangement

#64
20200200579
2020-06-25

FLOW RATE MEASUREMENT DEVICE, GAS METER PROVIDED WITH FLOW RATE MEASUREMENT DEVICE, AND FLOW RATE MEASUREMENT DEVICE UNIT FOR GAS METER

#65
20200103042
2020-04-02

Pilot-operated relief valve assembly

#66
20200033895
2020-01-30

Pressure-type flow control device and flow control method

#67
20200018736
2020-01-16

Concentration detection method and pressure-type flow rate control device

#68
20200016640
2020-01-16

Landfill gas extraction control system throttle

#69
20190339725
2019-11-07

Methods and apparatus for multiple channel mass flow and ratio control systems

#70
20190316942
2019-10-17

METHODOLOGIES AND APPARATUS FOR THE RECOGNITION OF PRODUCTION TESTS STABILITY

#71
20190314951
2019-10-17

Cleaning liquid supply device, cleaning unit, and storage medium storing program

#72
20190286171
2019-09-19

Flow Measurement In Valves With Thermal Correction

#73
20190268692
2019-08-29

Acoustic protective cover assembly containing a retracted membrane material

#74
20190243392
2019-08-08

Method and apparatus for pulse gas delivery with isolation valves

#75
20190242741
2019-08-08

Systems and methods for finding and solving wet gas venturi meter problems in real-time

#76
20190228637
2019-07-25

Hydraulic accumulator health monitoring and remaining life system

#77
20190212177
2019-07-11

Method of detecting fluid flows, corresponding device and computer program product

#78
20190094055
2019-03-28

Determining flow rates of multiphase fluids

#79
20190024655
2019-01-24

Systems and methods for pump slip sensing

#80
20190011297
2019-01-10

Flow measuring device operating on the vortex counter principle

#81
20180356314
2018-12-13

Apparatus and method for sampling solids in pipeline fluid

#82
20180326738
2018-11-15

Device for measuring the flow rate and the viscosity of ink and use thereof in a printer

#83
20180319587
2018-11-08

Cap for refillable tote

#84
20180283914
2018-10-04

Pressure-based flow rate control device and malfunction detection method therefor

#85
20180264491
2018-09-20

FLUID DISPENSING SYSTEM AND METHOD

#86
20180259379
2018-09-13

Apparatus for inhaler testing

#87
20180246024
2018-08-30

Method and measuring apparatus for determining compressibility of a flowing fluid

#88
20180231407
2018-08-16

Supervised proportional metering device and methods for monitoring a metering pump

#89
20180216976
2018-08-02

Flow control system, method, and apparatus

#90
20180188700
2018-07-05

Apparatus for controlling flow and method of calibrating same

#91
20180164135
2018-06-14

Flow rate characteristic function identification method, flow rate characteristic function identification device, storage medium storing flow rate characteristic function identification program, and flow rate sensor or flow rate control device using them

#92
20180136021
2018-05-17

Pressure type flowmeter

#93
20180135570
2018-05-17

Pressure measurement apparatus for an engine

#94
20180128607
2018-05-10

Method to automatically detect the area ratio of an actuator

#95
20180128292
2018-05-10

Control strategy for hydraulic actuator with a pair of independent metering valves

#96
20180128290
2018-05-10

Method to automatically detect parameter for pressure dynamics control

#97
20180080692
2018-03-22

Refrigeration apparatus having leakage or charge deficiency determining feature

#98
20170364099
2017-12-21

FLOW CONTROL SYSTEM WITH BUILD-DOWN SYSTEM FLOW MONITORING

#99
20170350915
2017-12-07

Measurement of the flow velocity and the flow direction of gases and liquids

#100
20170350737
2017-12-07

Flow sensor

#101
20170322063
2017-11-09

Weight-based phase composition ratio determination

#102
20170315026
2017-11-02

Method and apparatus for the isokinetic sampling of a multiphase stream

#103
20170307432
2017-10-26

Fluid level monitor

#104
20170276563
2017-09-28

Pressure change measurement device, altitude measurement device, and pressure change measurement method

#105
20170234455
2017-08-17

Pressure type flow control system with flow monitoring, and method for detecting anomaly in fluid supply system and handling method at abnormal monitoring flow rate using the same

#106
20170219412
2017-08-03

METHOD AND A SYSTEM FOR METERING FLOW THROUGH A FLUID CONDUIT

#107
20170074816
2017-03-16

Electromagnetic steam energy/quality, flow, and fluid property sensor and method

#108
20170058664
2017-03-02

Electrical submersible pump flow meter

#109
20160370808
2016-12-22

Pressure type flow control system with flow monitoring

#110
20160313153
2016-10-27

Method and measuring assembly according to the differential pressure principle having a zero-point calibration

#111
20160305921
2016-10-20

Device and method for determining mixing ratios of flowing media

#112
20160273947
2016-09-22

Device for determining a property of a fluid and method of forming the same

#113
20160258791
2016-09-08

Measurement device for measuring airflow volume and ventilation resistance of wind-blowing apparatus

#114
20160256074
2016-09-08

Flow sensor

#115
20160245681
2016-08-25

MEMS thermal flow sensor with compensation for fluid composition

#116
20160242675
2016-08-25

Apparatus and method for detecting health deterioration

#117
20160223371
2016-08-04

Differential-pressure measuring assembly having effective-pressure lines and method for detecting plugged effective-pressure lines

#118
20160216713
2016-07-28

Flow control system, method, and apparatus

#119
20160187221
2016-06-30

Method for detecting a burst hose in a hydraulic system

#120
20160186889
2016-06-30

Discrete valve flow rate converter

#121
20160154405
2016-06-02

Systems and methods for damper performance diagnostics

#122
20160138582
2016-05-19

Systems and methods for supplying reduced pressure and measuring flow using a disc pump system

#123
20160054162
2016-02-25

Methodologies and apparatus for the recognition of production tests stability

#124
20160053905
2016-02-25

Refrigerant relief valve monitoring system and method

#125
20160052500
2016-02-25

Device and method for ascertaining at least one variable regarding a state of a brake fluid in a brake system of a vehicle

#126
20150355000
2015-12-10

Pressure-based airflow sensing in particle impactor systems

#127
20150346010
2015-12-03

Multi-tank material balance model

#128
20150219480
2015-08-06

Self-diagnosing differential pressure flow meter including a directed pressure port

#129
20150136248
2015-05-21

Flow control system with build-down system flow monitoring

#130
20150107369
2015-04-23

Method of, and apparatus for, measuring the mass flow rate of a gas

#131
20150073292
2015-03-12

Flow sensor

#132
20150057816
2015-02-26

Flow-control valve system and method

#133
20150000655
2015-01-01

Flow sensor

#134
20140305626
2014-10-16

Calculation of flow in an air system

#135
20140277773
2014-09-18

Systems and methods for damper performance diagnostics

#136
20140230911
2014-08-21

Pressure type flow control system with flow monitoring, and method for detecting anomaly in fluid supply system and handling method at abnormal monitoring flow rate using the same

#137
20140182692
2014-07-03

Pressure type flow control system with flow monitoring

#138
20140175316
2014-06-26

Manual balancing valve

#139
20140165734
2014-06-19

Amplifier-embedded pressure sensor

#140
20140150520
2014-06-05

System and method for measuring flow rates for individual petroleum wells in a well pad field

#141
20140069209
2014-03-13

Angled port differential pressure flow meter

#142
20140069208
2014-03-13

Self-diagnosing differential pressure flow meter

#143
20140060205
2014-03-06

Apparatus and method for measuring the flow-rate of different fluids present in multiphase streams

#144
20140033828
2014-02-06

Methods for verifying gas flow rates from a gas supply system into a plasma processing chamber

#145
20130319132
2013-12-05

Apparatus for Measuring at Least One Characteristic Value of a Multiphase Fluid Mixture

#146
20130319103
2013-12-05

Dual differential pressure multiphase flow meter

#147
20130298696
2013-11-14

Method and system for measuring fluid flow in bell nipples using pressure measurement

#148
20130247674
2013-09-26

Fluid flow testing system

#149
20130239545
2013-09-19

Rocket engine pressure sense line

#150
20130223979
2013-08-29

Systems and methods for supplying reduced pressure and measuring flow using a disc pump system

#151
20130220026
2013-08-29

Flow measurement unit

#152
20130111969
2013-05-09

Methods for retrofitting natural gas meters

#153
20130074604
2013-03-28

Process fluid pressure transmitter with separated sensor and sensor electronics

#154
20130047709
2013-02-28

Method of measuring flow properties of a multiphase fluid

#155
20130047706
2013-02-28

System and method for measuring a leakage area for constructing a smoke-ventilation apparatus

#156
20120318383
2012-12-20

Flow rate measuring device and flow rate controller

#157
20120260692
2012-10-18

Water flow measurement device

#158
20120234074
2012-09-20

Measurement device and method for determining a fluid fill level in a fuel tank

#159
20120226449
2012-09-06

Flow sensing device with temperature compensation

#160
20120222494
2012-09-06

Differential pressure based flow measurement

#161
20120216625
2012-08-30

System, method and apparatus for measuring multiphase flow

#162
20120186336
2012-07-26

Sensor assembly with hydrophobic filter

#163
20120180876
2012-07-19

Flow rate measuring mechanism, mass flow controller, and pressure sensor

#164
20120096949
2012-04-26

Beta ratio changer for flow measurement devices

#165
20120059602
2012-03-08

Method for field-measuring fluid flow meters

#166
20120035866
2012-02-09

Flow sensor with pressure output signal

#167
20120017688
2012-01-26

Drug delivery device and method

#168
20110270541
2011-11-03

AIR FLOW RATE SENSOR

#169
20110250051
2011-10-13

FC fan flow measurement system using a curved inlet cone and pressure sensor

#170
20110226053
2011-09-22

Flow sensor assembly with porous insert

#171
20110226052
2011-09-22

Sensor assembly with hydrophobic filter

#172
20110209560
2011-09-01

Substrate processing method, storage medium storing program for executing the same, substrate processing apparatus, and fault detection method for differential pressure flowmeter

#173
20110138928
2011-06-16

Method of measuring flow properties of a multiphase fluid

#174
20110106462
2011-05-05

Two-phase fluid flow measuring apparatus and process

#175
20110100362
2011-05-05

Pneumatic Shunt Resistance and Gas Mixer

#176
20110083515
2011-04-14

Flow measuring apparatus including a deflectable membrane applied to a constriction

#177
20110072911
2011-03-31

System and method for estimating EGR mass flow rates

#178
20110037598
2011-02-17

Sonic detection of flow state change for measurement stations

#179
20110022335
2011-01-27

REAL-TIME NON-STATIONARY FLOWMETER

#180
20110017325
2011-01-27

Three-valves manifold for differential pressure type flow meter

#181
20110011185
2011-01-20

Flowmeter and manifold therefor

#182
20100286931
2010-11-11

System, method and computer program for determining fluid flow rate using a pressure sensor and a thermal mass flow sensor

#183
20100284437
2010-11-11

Plug-in sensor for measuring at least one property of a fluid medium

#184
20100229967
2010-09-16

Mass flow controller verifying system, verifying method and verifying program

#185
20100218612
2010-09-02

Dual pressure sensor

#186
20100199780
2010-08-12

Method of Measuring Multiphase Flow

#187
20100171304
2010-07-08

Connection module and connector

#188
20100168599
2010-07-01

Respiratory component measurement system with indicating elements

#189
20100132339
2010-06-03

EXHAUST GAS SYSTEM

#190
20100065579
2010-03-18

Slideable flow metering devices and related methods

#191
20100065578
2010-03-18

Flow regulating stopcocks and related methods

#192
20100010755
2010-01-14

METHOD FOR DIAGNOSING AN IMPULSE LINE BLOCKAGE IN A PRESSURE TRASDUCER, AND PRESSURE TRANSDUCER

#193
20090326839
2009-12-31

Velocity-enhanced flow measurement

#194
20090306911
2009-12-10

Method and apparatus for making a water cut determination using a sequestered liquid-continuous stream

#195
20090293634
2009-12-03

Method of measuring multiphase flow using a multi-stage flow meter

#196
20090292399
2009-11-26

Method for detecting malfunction of valve on the downstream side of throttle mechanism of pressure type flow control apparatus

#197
20090250059
2009-10-08

Flow sensor

#198
20090211351
2009-08-27

Portable vehicle exhaust flow sensor

#199
20090171507
2009-07-02

Gasket type orifice and pressure type flow rate control apparatus for which the orifice is employed

#200
20090127483
2009-05-21

Fluid handling device with isolating chamber

#201
20090101217
2009-04-23

Flow-rate controller, and regulator unit and valve unit used for the same

#202
20090084164
2009-04-02

Filter monitor-flow meter combination sensor

#203
20090064795
2009-03-12

Steam meter

#204
20090049925
2009-02-26

Medium density measuring system

#205
20090038406
2009-02-12

Medium density measuring system

#206
20090038405
2009-02-12

Measuring system for a medium flowing in a process line

#207
20090013798
2009-01-15

Medium density measuring system

#208
20080300792
2008-12-04

Method of measuring gas flow

#209
20080283062
2008-11-20

Respiratory component measurement system including a sensor for detecting orientation or motion

#210
20080264181
2008-10-30

Flow sensor chip

#211
20080236298
2008-10-02

Wet gas metering using a differential pressure and a sonar based flow meter

#212
20080210316
2008-09-04

Module for a Gas System

#213
20080173085
2008-07-24

Method & apparatus for fluid flow rate and density measurement

#214
20080087107
2008-04-17

Particulate sampler and dilution gas flow device arrangement for an exhaust sampling system

#215
20080078236
2008-04-03

Adaptive learning method for clean particulate filter pressure drop

#216
20070281536
2007-12-06

CONNECTION MODULE AND CONNECTOR

#217
20070276603
2007-11-29

Detection of water breakthrough

#218
20070253774
2007-11-01

Control gates

#219
20070209442
2007-09-13

Apparatus for measuring differential pressure

#220
20070193369
2007-08-23

Multiphasic overreading correction in a process variable transmitter

#221
20070163362
2007-07-19

Wet gas indication using a process fluid differential pressure transmitter

#222
20070160879
2007-07-12

Methods for controlling fluid delivery in a micro fuel cell system

#223
20070088267
2007-04-19

Drug delivery device and method

#224
20070021935
2007-01-25

Methods for verifying gas flow rates from a gas supply system into a plasma processing chamber

#225
20070006744
2007-01-11

Wet gas metering using a differential pressure based flow meter with a sonar based flow meter

#226
20070006727
2007-01-11

System and method for optimizing a gas/liquid separation process

#227
20070006640
2007-01-11

Multi-phase flow measurement system having a fluid separator

#228
20060225482
2006-10-12

Exhaust volume measurement device

#229
20060117858
2006-06-08

Method for measuring average velocity pressure and system thereof

#230
20060086194
2006-04-27

Laminar flow meter or controller

#231
20060083592
2006-04-20

Control gates

#232
20060056915
2006-03-16

Flow measurement and control

#233
20060029848
2006-02-09

Method and system for controlling fluid delivery in a fuel cell

#234
20050257605
2005-11-24

Portable vehicle exhaust flow sensor

#235
20050234634
2005-10-20

Method for checking the operability of an ambient pressure sensor of an internal combustion engine

#236
20050178442
2005-08-18

Flow-measuring valve device and method

#237
20050038172
2005-02-17

Temperature sensing device for metering fluids

#238
15161482
2017-08-22

Variable cone flow meter