ClassID:

165064

G01F1/50 - 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 Correcting or compensating means

Recent Application in this class:
#1
20260140521
2026-05-21

FLOW RATE CONTROL SYSTEM AND FLOW RATE CONTROL METHOD

#2
20260118147
2026-04-30

TECHNIQUES FOR UNIVERSALLY DETECTING OR MITIGATING FLUID FLOW MEASUREMENT ERRORS

#3
20260092797
2026-04-02

Venturi Flow Meter for Moisture-Saturated Compressed Air

#4
20260090689
2026-04-02

METHOD OF DETERMINING AN AIRFLOW RATE THROUGH A MOTOR ASSEMBLY OF AN AIR-MOVING DEVICE

#5
20260049856
2026-02-19

Cost Effective Pressure Sensors for Gas Meters

#6
20250334434
2025-10-30

Mass Flow Meter And Mass Flow Controller Having The Same

#7
20250327688
2025-10-23

MEASURE GRID GAS PRESSURE BY THE RESIDENTIAL GAS METER

#8
20250283742
2025-09-11

FLOWMETER WITH CONDITIONING ORIFICE PLATE

#9
20250238043
2025-07-24

Methods and Apparatus for Reporting Inlet Pressure in Mass Flow Controllers

#10
20250035471
2025-01-30

METHOD FOR MEASURING OF THE FLOW RATE OF A PUMP

#11
20240344856
2024-10-17

FLOWMETER FOR TWO-PHASE FLUID

#12
20240302192
2024-09-12

Amplified Pitot Flow Meter

#13
20240263978
2024-08-08

MEASURE GRID GAS PRESSURE BY THE RESIDENTIAL GAS METER

#14
20240255327
2024-08-01

APPARATUS FOR MEASURING A FLUID

#15
20240201713
2024-06-20

Method and apparatus for mass flow control

#16
20230288240
2023-09-14

Method for determining the mass flow in an internal combustion engine

#17
20230167550
2023-06-01

DIVERTLESS GAS-DOSING

#18
20230152136
2023-05-18

Determining fluid flow across rotary pump

#19
20230105634
2023-04-06

Multiphase Flowmeter

#20
20230041634
2023-02-09

Cost Effective Pressure Sensors for Gas Meters

#21
20230034399
2023-02-02

SUBSTRATE PROCESSING SYSTEM AND METHOD OF PROCESSING SUBSTRATE

#22
20230028225
2023-01-26

METHOD FOR MEASURING THE FLOW OF A LIQUID MEDIUM HAVING VARIABLE GAS CONTENT ON THE BASIS OF A DIFFERENTIAL-PRESSURE MEASUREMENT

#23
20230022150
2023-01-26

Method for operating a flow measuring point for media having at least one liquid phase

#24
20220373371
2022-11-24

Monitoring a disturbing variable of a measuring device system by monitoring an error velocity of the measuring device system

#25
20220244082
2022-08-04

Flow measurement method based on dynamic optimization of three pressure sensors

#26
20220090948
2022-03-24

TWO AND THREE-DIMENSIONAL MODEL BASED CORRECTION OF ELBOW TAP FLOW MEASUREMENT

#27
20220065677
2022-03-03

Wide range flow measuring device having two Coriolis meters arranged in series and a bypass line to bypass the second Coriolis meter

#28
20210263540
2021-08-26

Method and apparatus for measuring gas flow

#29
20210096013
2021-04-01

Systems and Methods for Reference Volume for Flow Calibration

#30
20210080313
2021-03-18

Mass flow verification based on rate of pressure decay

#31
20200393279
2020-12-17

Method for determining a volumetric and/or mass flow rate

#32
20200309576
2020-10-01

Fluid control arrangement for a medical device

#33
20200278226
2020-09-03

Flow rate calculation system, flow rate calculation system program, flow rate calculation method, and flow rate calculation device

#34
20200278225
2020-09-03

Flow rate measurement apparatus and method for more accurately measuring gas flow to a substrate processing system

#35
20200256713
2020-08-13

SYSTEM FOR SHUTTING-OFF FLUID FLOW AND MEASURING FLUID FLOW RATE

#36
20200132535
2020-04-30

System and method for metering fluid flow

#37
20200049542
2020-02-13

System and method for remote metering station sensor calibration and verification

#38
20190339725
2019-11-07

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

#39
20190293476
2019-09-26

Methods, systems, and apparatus for mass flow verification based on rate of pressure decay

#40
20190285442
2019-09-19

Handheld digital manometer

#41
20190227577
2019-07-25

Pressure type flow rate control device, and flow rate calculating method and flow rate control method for same

#42
20190226899
2019-07-25

Method of operating a liquid-level transmitter device and implementation thereof

#43
20190212176
2019-07-11

Method of determining flow rate of a gas in a substrate processing system

#44
20190204133
2019-07-04

Variable Restriction for Flow Measurement

#45
20190204128
2019-07-04

Apparatus and methods for self-correcting pressure based mass flow controller

#46
20190204127
2019-07-04

Systems and methods for reference volume for flow calibration

#47
20190033897
2019-01-31

Air flow measurement using pressure sensors

#48
20190024655
2019-01-24

Systems and methods for pump slip sensing

#49
20190017855
2019-01-17

Gas supply device capable of measuring flow rate, flowmeter, and flow rate measuring method

#50
20180317633
2018-11-08

Method, system and apparatus for dispensing products for a personal care service, instructing on providing a personal care treatment service, and selecting a personal care service

#51
20180283914
2018-10-04

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

#52
20180275697
2018-09-27

Method For Controlling A Conditioning Unit And Consumption Measuring Device Having Such A Conditioning Unit

#53
20180274956
2018-09-27

Apparatus and method for creating inferential process flow measurements using flow restrictor and upstream and downstream pressure measurements

#54
20180173250
2018-06-21

Assembly installable in an air conditioning and/or heating system, air conditioning and/or heating system comprising the assembly and method of controlling the assembly

#55
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

#56
20180142658
2018-05-24

Device for measuring the injection rate, method for producing a device of said type, and measuring method

#57
20180113011
2018-04-26

Differential pressure sensor, and filtration device used therewith

#58
20180106648
2018-04-19

Subsea flow meter assembly

#59
20180104434
2018-04-19

Flow member

#60
20180073902
2018-03-15

Method for assessing and managing sensor uncertainties in a virtual flow meter

#61
20170350737
2017-12-07

Flow sensor

#62
20170312473
2017-11-02

Modular flow cassette

#63
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

#64
20170205261
2017-07-20

Physical-quantity detection device

#65
20170191863
2017-07-06

ECONOMICAL ENVIRONMENTAL CONTROL SYSTEM (ECS) SMART VENTURI

#66
20170060143
2017-03-02

Method and apparatus for pressure-based flow measurement in non-critical flow conditions

#67
20170023393
2017-01-26

Correction of natural gas flow calculations for the effects of water vapor

#68
20160370808
2016-12-22

Pressure type flow control system with flow monitoring

#69
20160313153
2016-10-27

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

#70
20160282880
2016-09-29

Flow control device equipped with flow monitor

#71
20160281708
2016-09-29

System for measuring temporally resolved through-flow processes of fluids

#72
20160256074
2016-09-08

Flow sensor

#73
20160245684
2016-08-25

Method and apparatus for accurately measuring individual components of a multiphase fluid using separately measured Reynolds number

#74
20160238422
2016-08-18

Method and apparatus for accurately measuring individual components of a multiphase fluid using separately measured reynolds number and emulsion type of liquid phase

#75
20160195415
2016-07-07

Absolute and differential pressure transducer

#76
20160178417
2016-06-23

method and apparatus for checking a pressure-based mass flow sensor in an air delivery system for an internal combustion engine

#77
20150346006
2015-12-03

Flowmeter for measuring flow of a process fluid through a conduit including upstream and downstream process variable sensors mounted on the pitot tube

#78
20150316571
2015-11-05

Fluid sample system and method

#79
20150316402
2015-11-05

Apparatus and method for accurately measuring flow of a multi-component mixture having scale buildup

#80
20150276443
2015-10-01

Device and method for estimating a flow of gas in an enclosure maintained at reduced pressure in relation to the gas

#81
20150253170
2015-09-10

Zero point drift compensating flowmeter

#82
20150173488
2015-06-25

Method, system and apparatus for dispensing products for a personal care service, instructing on providing a personal care treatment service, and selecting a personal care service

#83
20150096386
2015-04-09

Measuring device for determining the volumetric flow rate of glue in a gluing device

#84
20150082903
2015-03-26

Multivariable process fluid transmitter for high pressure applications

#85
20150073292
2015-03-12

Flow sensor

#86
20150000664
2015-01-01

Modular flow cassette

#87
20150000655
2015-01-01

Flow sensor

#88
20140371926
2014-12-18

Pressure compensated flow rate controller with BTU meter

#89
20140331783
2014-11-13

Multiphase flowmeter

#90
20140260658
2014-09-18

Flowmeter for measuring flow of a process fluid through a conduit including process variable sensors mounted on a pitot tube

#91
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

#92
20140208833
2014-07-31

Flow sensor

#93
20140182692
2014-07-03

Pressure type flow control system with flow monitoring

#94
20140069209
2014-03-13

Angled port differential pressure flow meter

#95
20130312421
2013-11-28

FUEL CONTROL SYSTEM FOR A GAS TURBINE ENGINE

#96
20130298696
2013-11-14

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

#97
20130220026
2013-08-29

Flow measurement unit

#98
20130096850
2013-04-18

Method or determining an absolute flow rate of a volume or mass flow

#99
20130008264
2013-01-10

Fluid flow rate measurement method including two pitot tubes, a differential pressure sensor, and a microcontroller

#100
20120318383
2012-12-20

Flow rate measuring device and flow rate controller

#101
20120305113
2012-12-06

Water meter

#102
20120226449
2012-09-06

Flow sensing device with temperature compensation

#103
20120222494
2012-09-06

Differential pressure based flow measurement

#104
20120185102
2012-07-19

Pressure compensated flow rate controller with BTU meter

#105
20120166125
2012-06-28

Method for in-situ calibrating a differential pressure plus sonar flow meter system using dry gas conditions

#106
20120059602
2012-03-08

Method for field-measuring fluid flow meters

#107
20120006119
2012-01-12

Differential pressure transmitter with complimentary dual absolute pressure sensors

#108
20110313704
2011-12-22

Physical quantity sensor

#109
20110248043
2011-10-13

Fluid flow measuring and proportional fluid flow control device

#110
20110247703
2011-10-13

DIFFERENTIAL FLOW SIGNAL AMPLIFICATION

#111
20110238373
2011-09-29

In-flight pitot-static calibration

#112
20110224603
2011-09-15

Device and method for determining at least one flow parameter

#113
20110154242
2011-06-23

FLOW DIFFERENTIAL PRESSURE MODULE

#114
20110139902
2011-06-16

System and method for swirl generation

#115
20110100136
2011-05-05

Method of dynamically correcting flow rate measurements

#116
20110083515
2011-04-14

Flow measuring apparatus including a deflectable membrane applied to a constriction

#117
20110040485
2011-02-17

Method of measuring multi-phase fluid flow downhole

#118
20100242622
2010-09-30

Arrangement for improving accuracy of pressure measurement and flow sensor

#119
20100241367
2010-09-23

Sensor, Program Storage Unit, Control Unit, and Promgram Storage Medium

#120
20100229967
2010-09-16

Mass flow controller verifying system, verifying method and verifying program

#121
20100193056
2010-08-05

Flowmeter and flow-rate controller

#122
20100193051
2010-08-05

Differential-pressure flowmeter and flow-rate controller

#123
20100126261
2010-05-27

Method for measuring the instantaneous flow of an injector for gaseous fuels

#124
20100106433
2010-04-29

Multivariable process fluid flow device with fast response flow calculation

#125
20100083770
2010-04-08

PROCESS AND DEVICE FOR CONTINUOUS MEASUREMENT OF A DYNAMIC FLUID CONSUMPTION

#126
20100070240
2010-03-18

Diagnostic mechanism in differential pressure type mass flow controller

#127
20090292484
2009-11-26

Multivariable process fluid flow device with energy flow calculation

#128
20090266175
2009-10-29

Apparatus and method for characterizing two phase fluid flow

#129
20090250059
2009-10-08

Flow sensor

#130
20090217752
2009-09-03

Sensor unit having a measuring probe and a housing part with sensors and a computing unit integrated in the housing part

#131
20090216477
2009-08-27

MEASURING APPARATUSES AND METHODS OF USING THEM

#132
20090211372
2009-08-27

Ram pressure probe having two ducts and a differential pressure increasing element

#133
20090113985
2009-05-07

Fluid flow measuring and proportional fluid flow control device

#134
20090093774
2009-04-09

AMBULATORY PUMP WITH INTELLIGENT FLOW CONTROL

#135
20090071241
2009-03-19

Air flow measurement

#136
20090019943
2009-01-22

Gas flow rate verification unit

#137
20080300792
2008-12-04

Method of measuring gas flow

#138
20080208504
2008-08-28

Impulse line-clogging detecting unit and impulse line-clogging detecting method

#139
20080177484
2008-07-24

Advanced transmitter isolation feature

#140
20080148867
2008-06-26

Flow measurement apparatus

#141
20080141757
2008-06-19

Onboard method of determining EGR flow rate

#142
20080110281
2008-05-15

Flow meter for bitumen froth pipelines

#143
20080033901
2008-02-07

Fluid flow measuring and proportional fluid flow control device

#144
20080011821
2008-01-17

Method and System of Determining Orifice Plate Parameters

#145
20080000306
2008-01-03

Method and apparatus for measuring multi-streams and multi-phase flow

#146
20070271043
2007-11-22

Method and system for generating an uncertainty value

#147
20070193369
2007-08-23

Multiphasic overreading correction in a process variable transmitter

#148
20070192047
2007-08-16

Unsteady flow meter

#149
20070174013
2007-07-26

Measuring apparatuses and methods of using them

#150
20070010968
2007-01-11

Dedicated process diagnostic device

#151
20060288799
2006-12-28

Software correction method and apparatus for a variable orifice flow meter

#152
20060285335
2006-12-21

Method of accurately controlling a cooling process of a high power lamp

#153
20060236781
2006-10-26

Differential pressure type flowmeter and differential pressure type flow controller

#154
20060225710
2006-10-12

Method and device for estimating the inlet air flow in a combustion chamber of a cylinder of an internal combustion engine

#155
20060225482
2006-10-12

Exhaust volume measurement device

#156
20060162466
2006-07-27

Fluid flow measuring and proportional fluid flow control device

#157
20060144163
2006-07-06

Gas flow measuring device

#158
20060074570
2006-04-06

Electronic gas flow measurement and recording device

#159
20060036404
2006-02-16

Process variable transmitter with diagnostics

#160
20050234634
2005-10-20

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

#161
20050125190
2005-06-09

Multivariable transmitter and computation processing method of the same

#162
20050080550
2005-04-14

Method and apparatus for measuring exhaust gas flow rate and it's application system for analyzing the exhaust gases from an engine

#163
18671890
2025-09-02

Adjustable venturi for multiphase flowmeter

#164
17222224
2023-03-14

Airflow measurement device for airflow measuring

#165
14012996
2014-06-24

System for remotely monitoring a tensioner and providing an alarm for anticipated failure and maintenance

#166
14012987
2014-06-24

System for remotely monitoring a site for anticipated failure and maintenance with a plurality of controls

#167
14012981
2014-06-24

Method for remotely monitoring a site for anticipated failure and maintenance with a plurality of controls