ClassID:

167021

G01M3/28 - CPC Classification

Classification description:

Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds

Sub-classes:
Recent Application in this class:
#1
20260133030
2026-05-14

GAS-MAPPING 3D IMAGER MEASUREMENT TECHNIQUES AND METHOD OF DATA PROCESSING

#2
20260118206
2026-04-30

ACOUSTIC EMISSIONS MONITORING OF HIGH PRESSURE SYSTEMS

#3
20260098780
2026-04-09

AUTOMATED VAPOR GENERATING MACHINE

#4
20260029296
2026-01-29

GAS DETECTION DEVICE, GAS SUPPLY SYSTEM, AND SUBSTRATE PROCESSING APPARATUS

#5
20250389535
2025-12-25

High-Sensitivity Gas-Mapping 3D Imager and Method ff Operation

#6
20250060271
2025-02-20

Methods And Apparatus For Checking Emitter Bonds In An Irrigation Drip Line

#7
20240075226
2024-03-07

SYSTEM AND METHOD FOR ACCURATE ESTIMATION OF INTENTIONAL AND UNINTENTIONAL LEAKS IN FLOW GENERATION SYSTEMS

#8
20240027003
2024-01-25

METHOD FOR PRODUCING A CONNECTION, AND CONNECTION DEVICE

#9
20230408364
2023-12-21

NEGATIVE PRESSURE WAVE MONITORING BASED LEAK DETECTION METHOD OF MULTIPATH PIPELINE NETWORK

#10
20230258525
2023-08-17

LOW TEMPERATURE PIPE SYSTEM TESTING

#11
20230243648
2023-08-03

HIGH-SENSITIVITY GAS-MAPPING 3D IMAGER AND METHOD OF OPERATION

#12
20230038473
2023-02-09

ACOUSTIC EMISSIONS MONITORING OF HIGH PRESSURE SYSTEMS

#13
20220412732
2022-12-29

GAS-MAPPING 3D IMAGER MEASUREMENT TECHNIQUES AND METHOD OF DATA PROCESSING

#14
20220404229
2022-12-22

Methods and apparatus for checking emitter bonds in an irrigation drip line

#15
20220349772
2022-11-03

Leakage detector

#16
20220349735
2022-11-03

Gas flow estimation method, hole diameter estimation method, gas flow rate estimation device, and hole diameter estimation device

#17
20220334022
2022-10-20

SYSTEMS AND METHODS FOR CALIBRATING A LEAK TEST MACHINE FOR A MANUFACTURING LINE

#18
20220057202
2022-02-24

High-sensitivity gas-mapping 3D imager and method of operation

#19
20220057048
2022-02-24

Method for detecting leaks in a gas network under pressure or under vacuum and gas network

#20
20220034745
2022-02-03

Leak detection system and inspection method for the system

#21
20210372094
2021-12-02

Pipeline pressure testing accounting for measurement uncertainties

#22
20210310894
2021-10-07

Leak Detection Device

#23
20210255055
2021-08-19

Monitoring system for detecting leakages during ventilation, and method

#24
20210148781
2021-05-20

Method for fluid measurement for a discrete area of a fluid supply network

#25
20210096037
2021-04-01

Method and system for predicting water leakage events in district-metered-area of water distribution network

#26
20210080339
2021-03-18

Acoustic emissions monitoring of high pressure systems

#27
20210060273
2021-03-04

System and method for accurate estimation of intentional and unintentional leaks in flow generation systems

#28
20210055153
2021-02-25

Water meter and systems

#29
20210010894
2021-01-14

Gas safety device

#30
20200378860
2020-12-03

System and method for water leak detection

#31
20200370990
2020-11-26

Gas leak monitoring system

#32
20200363246
2020-11-19

Method and system for fluid flow rate measurement

#33
20200284579
2020-09-10

CERTIFICATE AUTHORITY MASTER KEY TRACKING ON DISTRIBUTED LEDGER

#34
20200264067
2020-08-20

Fluid usage monitoring and control system

#35
20200240960
2020-07-30

Methods for liquid chromatography fluidic monitoring

#36
20200209096
2020-07-02

FLUID LEAK AND MICROLEAK DETECTOR AND PROCEDURE FOR DETECTING LEAKS AND MICROLEAKS

#37
20200191678
2020-06-18

Pressure-based flaw detection

#38
20200149883
2020-05-14

Gas-mapping 3D imager measurement techniques and method of data processing

#39
20200131745
2020-04-30

MONITORING SYSTEM AND WATER FILTER MAINTENANCE METHOD

#40
20200072661
2020-03-05

Vibration sensor for fluid leak detection

#41
20200054911
2020-02-20

Method and system for identifying flow in hydrant outlet

#42
20200032933
2020-01-30

Seal apparatus

#43
20190368909
2019-12-05

Method and system for fluid flow rate measurement

#44
20190368664
2019-12-05

In-pipe leak detection systems, devices, and methods

#45
20190346131
2019-11-14

Detection of leakage in recovery boiler

#46
20190339155
2019-11-07

Device, system, and method for detecting equipment leaks

#47
20190316985
2019-10-17

Methods and apparatus for checking emitter bonds in an irrigation drip line

#48
20190310159
2019-10-10

System for estimating water flows at the boundaries of a sub-network of a water distribution network

#49
20190285409
2019-09-19

High-sensitivity gas-mapping 3D imager and method of operation

#50
20190271611
2019-09-05

Method for testing for fluid leaks

#51
20190236219
2019-08-01

Systems and methods for modeling, analyzing, detecting, and monitoring fluid networks

#52
20190219391
2019-07-18

Certificate authority master key tracking on distributed ledger

#53
20190212177
2019-07-11

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

#54
20190195723
2019-06-27

Pipeline element leak detection system and method

#55
20190195721
2019-06-27

Systems and methods for modeling, analyzing, detecting, and monitoring fluid networks

#56
20190178748
2019-06-13

Apparatus and method for detecting leakage in hydrogen tank of hydrogen fuel cell vehicle

#57
20190170047
2019-06-06

STOP VALVE, SCR SYSTEM, AND METHOD FOR DETECTING LEAKS AND/OR IDENTIFYING VARIATIONS IN METERED AMOUNTS

#58
20190145077
2019-05-16

Pipe trench system

#59
20190135657
2019-05-09

Method, system and apparatus for monitoring and controlling water quality and flow

#60
20190120671
2019-04-25

Flow sensor

#61
20190094101
2019-03-28

LEAK SENSOR ASSEMBLIES AND SYSTEMS UTILIZING SAME

#62
20190025151
2019-01-24

Method and system for detecting leakage in fluid distribution networks

#63
20190025150
2019-01-24

System and method for water leak detection

#64
20180340916
2018-11-29

Methods for liquid chromatography fluidic monitoring

#65
20180275007
2018-09-27

Portable appliance testing apparatus

#66
20180231168
2018-08-16

Pipe lining leak testing methods and apparatus

#67
20180216932
2018-08-02

High-sensitivity gas-mapping 3D imager and method of operation

#68
20180202890
2018-07-19

Apparatus for analyzing the performance of fluid distribution equipment

#69
20180202585
2018-07-19

Apparatus for hydrostatic testing

#70
20180195927
2018-07-12

System and method for detecting a leak in an exhaust gas sampling apparatus

#71
20180182228
2018-06-28

System for detecting flow characteristics and activating automatic flow shutoff

#72
20180172543
2018-06-21

Leak detection tool

#73
20180164136
2018-06-14

Method and system for fluid flow rate measurement

#74
20180136076
2018-05-17

Water-leak state estimation system, method, and recording medium

#75
20180128706
2018-05-10

Water leakage detection system

#76
20180067011
2018-03-08

Liquid leak detection in a liquid distribution system

#77
20180058973
2018-03-01

Method for detecting a fluid leak in a turbomachine and fluid distribution system

#78
20180058436
2018-03-01

Diaphragm with edge seal

#79
20180045599
2018-02-15

Autonomous identification of an anomalous aqueous stream from an aqueous source feeding multiple independent streams and remediation directive determination thereof

#80
20180030685
2018-02-01

Pipe trench system

#81
20170312463
2017-11-02

System and method for accurate estimation of intentional and unintentional leaks in flow generation systems

#82
20170261396
2017-09-14

Fluid path inspection device and fluid path inspection method

#83
20170211600
2017-07-27

SYSTEM AND METHOD FOR HEATLH MONITORING OF SERVO-HYDRAULIC ACTUATORS

#84
20170184138
2017-06-29

SYSTEM AND METHOD FOR HEALTH MONITORING OF HYDRAULIC SYSTEMS

#85
20170097302
2017-04-06

High-sensitivity gas-mapping 3D imager and method of operation

#86
20170097274
2017-04-06

Gas-mapping 3D imager measurement techniques and method of data processing

#87
20170045415
2017-02-16

Aspirated sampling systems

#88
20170045414
2017-02-16

Fluid leakage detection system

#89
20170023433
2017-01-26

System and method for detecting microscopic leaks

#90
20160349142
2016-12-01

Pipeline element leak detection system and method

#91
20160334255
2016-11-17

Method and system for fluid flow rate measurement

#92
20160313208
2016-10-27

Method for testing for fluid leaks

#93
20160076965
2016-03-17

Methods and apparatus for checking emitter bonds in an irrigation drip line

#94
20160054193
2016-02-25

Drainage apparatus

#95
20160041061
2016-02-11

Engine ventilation system diagnostics using pressure measurement

#96
20150354347
2015-12-10

System and method for a benchmark pressure test

#97
20150354346
2015-12-10

System and method for a benchmark pressure test

#98
20150348395
2015-12-03

Pipe system, and pipe flow monitoring and alerting systems and methods

#99
20150323412
2015-11-12

TOILET WATER DAMAGE PROTECTION KIT AND METHOD

#100
20150285574
2015-10-08

Device, method and plate heat exchanger

#101
20150268125
2015-09-24

OIL DETECTION SENSOR MODULE FOR SENSING OIL LEAKAGE IN COOLANT SYSTEM

#102
20150166033
2015-06-18

Method for detecting leaks in a brake pressure line, under braking pressure, of a rail vehicle

#103
20150075259
2015-03-19

AUTOMATIC DETECTION OF LEAKS WITHIN AN IRRIGATION SYSTEM

#104
20150013436
2015-01-15

Diagnostic system for bulk well material handling plants

#105
20150007649
2015-01-08

Method for testing the tightness of cavities and device for decreasing convection and diffusion flow

#106
20140224026
2014-08-14

Pipeline monitoring unit and method

#107
20140174158
2014-06-26

Method for checking the leakproofness of safety valves

#108
20140060160
2014-03-06

Fuel system diagnostics

#109
20140053635
2014-02-27

Device and method for measuring the leakage rate from reference pressure lines onboard an aircraft

#110
20140049008
2014-02-20

Sensorized sealing system

#111
20140004433
2014-01-02

Fuel cell system with quick connect components

#112
20140000729
2014-01-02

Leak detection and control system and method

#113
20130333447
2013-12-19

LEAKAGE DETECTION

#114
20130332397
2013-12-12

Method for locating a leak in a fluid network

#115
20130312493
2013-11-28

Engine ventilation system diagnostics using pressure measurement

#116
20130291974
2013-11-07

Fluid leakage detection system

#117
20130192345
2013-08-01

Device for carrying out tests on at least one fluid circuit of an aircraft

#118
20130174650
2013-07-11

Method for detecting leaks, system and medical treating device

#119
20130145825
2013-06-13

Method for leak-testing and device for carrying out the method

#120
20130145615
2013-06-13

Detecting leaks in a fluid cooling system by sensing for a drop of fluid pressure in the system

#121
20120170610
2012-07-05

Method and system for detection of fluid invasion in an annular space of flexible pipe

#122
20110309780
2011-12-22

Seal leakage and seal oil contamination detection in generator

#123
20110308300
2011-12-22

Seal leakage and seal oil contamination detection in generator

#124
20110302995
2011-12-15

Wide range fluid leak detector and flow meter

#125
20110296901
2011-12-08

Hydrostatic tester

#126
20110185793
2011-08-04

Seal assembly with leak monitoring

#127
20110072888
2011-03-31

METHOD FOR LEAK DETECTION IN DOSING SYSTEM

#128
20110067773
2011-03-24

Dosing manifold assembly

#129
20110008687
2011-01-13

Method of operating a fuel cell system with bypass ports in a fuel processing assembly

#130
20100280769
2010-11-04

Method to determine connector leaks during testing

#131
20100045471
2010-02-25

Leak detection and control system and method

#132
20090299660
2009-12-03

Method and System to Identify Utility Leaks

#133
20090293581
2009-12-03

Leak detector

#134
20080216560
2008-09-11

Leak detecting apparatus

#135
20080188991
2008-08-07

FLUID SUPPLY MONITORING SYSTEM

#136
20080185050
2008-08-07

FLUID SUPPLY MONITORING SYSTEM

#137
20080185049
2008-08-07

FLUID SUPPLY MONITORING SYSTEM

#138
20080184781
2008-08-07

FLUID SUPPLY MONITORING SYSTEM

#139
20070209426
2007-09-13

System and method for determining duct leakage and fan flow efficiency

#140
20070196943
2007-08-23

Tightness test for disk bond connections and test structure for carrying out said method

#141
20060117838
2006-06-08

Deepwater seal test apparatus

#142
20050223780
2005-10-13

Pipeline leak-testing method

#143
18298920
2023-08-22

System and method for leak detection by flow matching

#144
17955963
2025-04-01

Systems and methods for detecting conditions of a fluid conduit

#145
17174403
2021-10-26

Bore and annulus monitoring pipe breach detection systems and methods

#146
16948349
2025-02-25

Gas detection systems and methods using survey area indicators

#147
16450970
2020-09-15

Gas detection systems and methods using search area indicators

#148
16450606
2019-11-05

Systems and methods for determining a survey area for gas leak detection

#149
16128025
2021-06-22

Systems and methods for detecting leaks in a compressed gas system

#150
15418367
2019-07-02

Gas Detection systems and methods using search area indicators

#151
13733857
2017-01-31

Gas detection systems and methods using search area indicators