ClassID:

152827

F16L9/19 - CPC Classification

Classification description:

Rigid pipes; Double-walled pipes; Multi-channel pipes or pipe assemblies Multi-channel pipes or pipe assemblies

Recent Application in this class:
#1
20260139767
2026-05-21

BIOMIMETIC WATER STORAGE AND TRANSPORT SYSTEM ADAPTED FOR LOW OR ZERO GRAVITY ENVIRONMENTS

#2
20250354631
2025-11-20

FLUID ASSEMBLY

#3
20250178713
2025-06-05

Aircraft Wing With Multi-Tube Structure

#4
20250102084
2025-03-27

FLUID CONDUIT STRUCTURE AND APPLICATION METHOD THEREOF

#5
20240384817
2024-11-21

EXTRUDED, MULTI-HOLE-PIPE AND MANUFACTURING METHOD THEREOF

#6
20240361079
2024-10-31

COAXIAL TUBE ARRANGEMENT

#7
20240318749
2024-09-26

PLASTIC PIPE AND DEVICE FOR THE CONTINUOUS PRODUCTION OF A PIPE BASE BODY FOR A PLASTIC PIPE OF THIS TYPE

#8
20240301976
2024-09-12

PIPE END FITTING WITH IMPROVED VENTING

#9
20240191950
2024-06-13

LOW LOSS SENSIBLE HEAT STORAGE

#10
20240159331
2024-05-16

PLASTIC/FIBERGLASS VENT WITH FASTENER AND COMPRESSION LIMITER

#11
20240060593
2024-02-22

COATED PIPE SECTION AND METHOD FOR COATING A PIPE

#12
20230392477
2023-12-07

UMBILICAL

#13
20230271694
2023-08-31

Composite attachment coupler and components using same

#14
20230160501
2023-05-25

CRYOGENIC TURBOPUMP FEED LINE

#15
20230100622
2023-03-30

Flow control nozzles, method of manufacture and use thereof

#16
20230064641
2023-03-02

Coaxial tube arrangement

#17
20230053884
2023-02-23

SYSTEMS AND METHODS FOR DISTRICT HEATING AND COOLING

#18
20230049963
2023-02-16

LOCALIZED PRODUCT INJECTION SYSTEM AND METHODS FOR SAME

#19
20220243968
2022-08-04

Plate-type refrigerant pipe and refrigeration apparatus

#20
20220243858
2022-08-04

COATED PIPE SECTION AND METHOD FOR COATING A PIPE

#21
20220049655
2022-02-17

Composite spray bars

#22
20220049654
2022-02-17

Composite spray bars

#23
20220018230
2022-01-20

Heating of subsea pipelines

#24
20210381626
2021-12-09

Tube arrangement for the transport of tempering medium

#25
20210293362
2021-09-23

Pipe end fitting with improved venting

#26
20210207752
2021-07-08

Enhanced fluid deflection angle structures and methods for manufacturing

#27
20210071516
2021-03-11

Downhole tubing or umbilical with sensor and method for manufacturing it

#28
20210032943
2021-02-04

Composite dual channel drill pipes and method of manufacture

#29
20200332882
2020-10-22

Hydraulic clutch assemblies

#30
20200316848
2020-10-08

Method and system for producing a pre-insulated pipe, and pre-insulated pipe

#31
20200309287
2020-10-01

Integral fluid conduit

#32
20200263813
2020-08-20

LASER CLAD MANUFACTURING TECHNIQUES

#33
20200095937
2020-03-26

Composite spray bars

#34
20200095936
2020-03-26

Composite spray bars

#35
20200088324
2020-03-19

Bundle section of a pipe bundle for subsea installation

#36
20200011455
2020-01-09

DUCT ASSEMBLY AND METHOD OF FORMING

#37
20190341965
2019-11-07

Wave guide with fluid passages

#38
20190257105
2019-08-22

ADAPTER FOR POOL CLEANING SYSTEM

#39
20190242500
2019-08-08

Double skinned pipe assembly

#40
20190211949
2019-07-11

Additively manufactured tube array

#41
20190145564
2019-05-16

Pipe end fitting with improved venting

#42
20190145563
2019-05-16

Pipe end fitting with improved venting

#43
20190128992
2019-05-02

Ducts with information modules and methods of use and manufacture thereof

#44
20190120414
2019-04-25

DUCT ASSEMBLY HAVING INTERNAL NOISE REDUCTION FEATURES, THERMAL INSULATION AND LEAK DETECTION

#45
20190089137
2019-03-21

APPARATUS FOR DIVIDING A DUCT OR CONDUIT

#46
20190063047
2019-02-28

WATER PIPE STRUCTURE OF BASIN FAUCET

#47
20190041067
2019-02-07

Water systems

#48
20180371888
2018-12-27

Subsea processing of well fluids

#49
20180356021
2018-12-13

Cross-over fluid coupling

#50
20180294838
2018-10-11

Wave guide with fluid passages

#51
20180273186
2018-09-27

Environmental control system pack with an air supply manifold

#52
20180243973
2018-08-30

Method and system for producing a pre-insulated pipe, and pre-insulated pipe

#53
20180087694
2018-03-29

Subsea pipe-in-pipe structures

#54
20180087327
2018-03-29

Termination bulkheads for subsea pipe-in-pipe systems

#55
20180080582
2018-03-22

Double-walled pipe

#56
20180066773
2018-03-08

Piping system with leak detection

#57
20180058771
2018-03-01

Method of generating support structure of tube components to become functional features

#58
20180056777
2018-03-01

AUTOMOTIVE PIPE

#59
20180051831
2018-02-22

COMBINED-PIPELINE SYSTEMS

#60
20180051539
2018-02-22

Sealing arrangements for subsea pipe-in-pipe systems

#61
20180031164
2018-02-01

Subsea pipe-in-pipe structures

#62
20180023767
2018-01-25

Sealing arrangements for subsea pipe-in-pipe systems

#63
20170336154
2017-11-23

Heating and cooling system

#64
20170336007
2017-11-23

Shrouded pipe

#65
20170335997
2017-11-23

Shrouded pipe

#66
20170333170
2017-11-23

Self-cleaning suction device

#67
20170321497
2017-11-09

Multi-conduit coiled tubing assembly including pivotal clamping members

#68
20170314724
2017-11-02

Auto-fill two-layer two-half wear resistant elbow of concrete pump truck and manufacturing method thereof

#69
20170274444
2017-09-28

METHOD OF MANUFACTURING BIFURCATED PIPE AND BIFURCATED CONNECTOR FOR CONNECTING HOSES AND FUEL SUPPLY HOSE MANUFACTURED USING THE SAME

#70
20170254445
2017-09-07

Double skinned pipe assembly

#71
20170244228
2017-08-24

APPARATUS FOR DIVIDING A DUCT OR CONDUIT

#72
20170225377
2017-08-10

Process for forming a divided conduit

#73
20170219134
2017-08-03

Double-walled pipe element and method for producing a double-walled pipe element

#74
20170219124
2017-08-03

Ducts with information modules and methods of use and manufacture thereof

#75
20170198837
2017-07-13

Bent product

#76
20170169536
2017-06-15

CASED PIPELINE NETWORK FOR LEAKAGE CONTAINMENT AND CONSOLIDATED DEVELOPMENT OF A HIGH NUMBER OF PIPELINES WITH DIVERSIFIED LINE MANAGEMENT

#77
20170167639
2017-06-15

Carbon dioxide shielded natural gas line and method of using thereof

#78
20170159871
2017-06-08

Support element, corresponding cryogenic fluid circuit and corresponding method

#79
20170146152
2017-05-25

Towable subsea oil and gas production systems

#80
20170114559
2017-04-27

Adapter for pool cleaning system

#81
20170030498
2017-02-02

Openable corrugated hose, cable harness and method for producing an openable corrugated hose of this kind

#82
20170023158
2017-01-26

Chemical dispense system with reduced contamination

#83
20160319982
2016-11-03

Transfer line for cryogenic liquid

#84
20160319963
2016-11-03

Pump suction pipe assembly for high flow sewer bypass

#85
20160305667
2016-10-20

Thermally-coupled fuel manifold

#86
20160289946
2016-10-06

Apparatus for pressurized conveyance in gravity conduits

#87
20160286739
2016-10-06

Subsurface pressurized irrigation delivery system

#88
20160281896
2016-09-29

Double wall tube fitting with an integrated diagnostic port

#89
20160278895
2016-09-29

Self-cleaning suction device

#90
20160176536
2016-06-23

Foolproofing system for pipes by means of an obstacle inside a connector in an aircraft duct

#91
20160123537
2016-05-05

FLEXIBLE INTERFACE CLOSED CYCLE CRYOCAST WITH REMOTELY LOCATED POINT OF COOLING

#92
20160090718
2016-03-31

Inlet water pipe

#93
20160084138
2016-03-24

DUAL LAYER EXHAUST TIP

#94
20150345275
2015-12-03

Subsea processing of well fluids

#95
20150338601
2015-11-26

SPECIAL-SHAPE TUBE LAYING OPTICAL FIBER BUNDLES IN COMMUNICATION ROOM

#96
20150337994
2015-11-26

Pipe for a conveying line for conveying bulk material as well as device for leakage monitoring of a conveying line

#97
20150323106
2015-11-12

Tubular composite beams

#98
20150321923
2015-11-12

PIPE CONNECTOR FOR A WATER FILTER SYSTEM

#99
20150308425
2015-10-29

Power air compressor

#100
20150249330
2015-09-03

Divided conduit

#101
20150232319
2015-08-20

SYSTEM AND APPARATUS FOR DISTRIBUTING FUEL, AND METHOD THEREFOR

#102
20150226463
2015-08-13

Multiplex pipe and system for recovering steam from geothermal wells

#103
20150211418
2015-07-30

Fuel manifold and fuel injector arrangement

#104
20150129315
2015-05-14

Double wall flow tube for percussion tool

#105
20150028168
2015-01-29

Multi-Conduit Coiled Tubing Assembly

#106
20140373960
2014-12-25

Bi-channel coolant tube having crossover channels to allow coolant interaction

#107
20140326354
2014-11-06

Method and System for Solution Mining

#108
20140311612
2014-10-23

Tube module

#109
20140311578
2014-10-23

Connector with double lumen tube

#110
20140305529
2014-10-16

Additive layer manufacturing method for producing a three-dimensional object and three-dimensional object

#111
20140270739
2014-09-18

Pipe assembly and flow assurance system

#112
20140224334
2014-08-14

Chemical dispense system with reduced contamination

#113
20140202548
2014-07-24

Method for attenuating noise produced by pipes and pipe arrangement

#114
20140124077
2014-05-08

Pipeline for high pressure cryogenic applications

#115
20140116556
2014-05-01

Pipe-in-pipe apparatus including an engineered pipe

#116
20140116548
2014-05-01

Filling connector with integrated ventilation duct

#117
20140096857
2014-04-10

Pipe assembly for district heating network

#118
20140083550
2014-03-27

Process for lining metal pipelines

#119
20140008077
2014-01-09

Method and apparatus for evacuating hydrocarbons from a distressed well

#120
20140000722
2014-01-02

Tubing and Method for Manufacture

#121
20130299032
2013-11-14

Self-cleaning Suction Device

#122
20130299019
2013-11-14

Self-cleaning suction device

#123
20130291988
2013-11-07

Pipe end fitting with improved venting

#124
20130276436
2013-10-24

Tubing for a liquid medium that is to be conditioned

#125
20130240076
2013-09-19

PIPE ELEMENT FOR CONSTRUCTING A DOUBLE WALLED PIPELINE

#126
20130233432
2013-09-12

Exhaust device for work vehicle

#127
20130233431
2013-09-12

Exhaust device for work vehicle

#128
20130206269
2013-08-15

Honeycomb-Body-Based Fluidic Interconnectors and Methods

#129
20130199654
2013-08-08

Pipe made of synthetic resin having a plurality of internal tubes

#130
20130180616
2013-07-18

Double pipe and coupling structure for the pipe

#131
20130174932
2013-07-11

Outlet Pipe Structure of a Faucet

#132
20130133773
2013-05-30

Multi-hole insulation tube

#133
20130047489
2013-02-28

FISHING APPARATUS AND METHOD

#134
20130000747
2013-01-03

Double-skin nozzle system, junction system between two tube portions, and aircraft provided with such a system

#135
20120267146
2012-10-25

WIRE SEPARATOR SUITABLE FOR USE IN A CABLE SPLICE ENCLOSURE

#136
20120261062
2012-10-18

Process for forming a divided conduit

#137
20120247600
2012-10-04

Rotary die forming process and apparatus for fabricating multi-port tubes

#138
20120193069
2012-08-02

Multipipe conduit for geothermal heating and cooling systems

#139
20120186776
2012-07-26

Twisted conduit for geothermal heating and cooling systems

#140
20120160506
2012-06-28

Method and apparatus for evacuating hydrocarbons from a distressed well

#141
20120155813
2012-06-21

Composite spoolable tube

#142
20120132310
2012-05-31

COMPOSITE TUBULAR PARTS WITH COMPLEX SHAPES

#143
20110315690
2011-12-29

Fluid container

#144
20110232795
2011-09-29

Geothermal pipe system

#145
20110203766
2011-08-25

Twisted conduit for geothermal heating and cooling systems

#146
20110203765
2011-08-25

Multipipe conduit for geothermal heating and cooling systems

#147
20110147047
2011-06-23

Power umbilical

#148
20110120586
2011-05-26

Downhole recovery production tube system

#149
20110120576
2011-05-26

Fluid transfer device having leak indication and method of making same

#150
20110108143
2011-05-12

Self-cleaning suction device

#151
20110094615
2011-04-28

Modular exhaust tube system

#152
20110080035
2011-04-07

Method and system for solution mining

#153
20110056580
2011-03-10

Climate tube, particularly for airplanes

#154
20110042938
2011-02-24

MULTIPLE MATERIAL PIPING COMPONENT

#155
20100326113
2010-12-30

Tubular conduit

#156
20100247345
2010-09-30

Production tubing member with auxiliary conduit

#157
20100237154
2010-09-23

Shower arrangement

#158
20100212769
2010-08-26

Composite spoolable tube

#159
20100175689
2010-07-15

Catalyzed hot gas heating system for pipes

#160
20100175687
2010-07-15

Catalyzed hot gas heating system for concentrated solar power generation systems

#161
20100149754
2010-06-17

Air-based cooling for data center rack

#162
20100101676
2010-04-29

Composite tubing

#163
20100096037
2010-04-22

Multi-tubular fluid transfer conduit

#164
20100065141
2010-03-18

Tubing and method for manufacture

#165
20090309408
2009-12-17

Method and system for solution mining

#166
20090285634
2009-11-19

Method and apparatus for manufacture of a non-helical subsea umbilical

#167
20090255239
2009-10-15

Exhaust system with O2 sensor

#168
20090217991
2009-09-03

Pipe

#169
20090139596
2009-06-04

DUAL-CONTAINMENT PIPE CONTAINING FLUOROPOLYMER

#170
20090120522
2009-05-14

Fuel inlet with crescent shaped passage for gas turbine engines

#171
20090084518
2009-04-02

PIPE AND SYSTEM FOR UTILIZING LOW-ENERGY

#172
20090025814
2009-01-29

FLEXIBLE FLUID LINE AND METHOD FOR MANUFACTURING IT

#173
20080246277
2008-10-09

Multiple material piping component

#174
20080223471
2008-09-18

Hose with multiple passages

#175
20080178956
2008-07-31

Fluid distribution apparatus and method of use thereof

#176
20080134692
2008-06-12

Gas Transfer Hose

#177
20080113609
2008-05-15

Combined Supply and Exhaust Apparatus

#178
20080092964
2008-04-24

THREE-IN-ONE WATER-SUPPLY PIPE SYSTEM WITH ACCESSORIES

#179
20080072983
2008-03-27

Flat pipe suitable for variable flow capacity

#180
20080014812
2008-01-17

Buoyancy Control Systems for Tubes

#181
20080006337
2008-01-10

Dual containment systems, methods and kits

#182
20070241560
2007-10-18

Coaxial quick connector

#183
20070209727
2007-09-13

Inner-space-sectioned tubes and method for manufacturing the same

#184
20070125439
2007-06-07

Composite tubing

#185
20070113911
2007-05-24

Multi-lumen miniature ribbon tubing

#186
20070096611
2007-05-03

Multichannel flat tube for heat exchanger

#187
20070089875
2007-04-26

High pressure D-tube with enhanced through tube access

#188
20070014188
2007-01-18

Hydrodynamic static mixing apparatus for use thereof in transporting, conditioning and separating oil sands and the like

#189
20060289074
2006-12-28

Pipe with a canal in the pipe wall

#190
20060245989
2006-11-02

Monolithic pipe structure particularly suited for riser and pipeline uses

#191
20060236979
2006-10-26

Line system for fluids having volatile components

#192
20060213247
2006-09-28

Method of manufacturing a coiled tubing system

#193
20060174468
2006-08-10

Method of manufacturing double pipe

#194
20060112997
2006-06-01

Marine umbilical comprising hydrolysis resistant polyamides

#195
20060108792
2006-05-25

Pipe arrangement branching structure, method for working perforated pipe and method for working branch pipe

#196
20060084331
2006-04-20

Buoyancy control systems for tubes

#197
20060016502
2006-01-26

Umbilical filling

#198
20050277347
2005-12-15

Buoyancy control systems for tubes

#199
20050259941
2005-11-24

Fire resistant conduit insert for optical fiber cable

#200
20050233019
2005-10-20

Apparatus for making a multi-walled tubular structure

#201
20050200121
2005-09-15

Double pipe forked part structure and method of making the same

#202
20050200084
2005-09-15

Seal assembly for dividing an annular space in a double-walled pipeline

#203
20050132962
2005-06-23

Pipe structure, alignment apparatus, electron beam lithography apparatus, exposure apparatus, exposure apparatus maintenance method, semiconductor device manufacturing method, and semiconductor device manufacturing factory

#204
20050121094
2005-06-09

Composite spoolable tube

#205
20050089707
2005-04-28

Shaped contoured crushable structural members and methods for making the same

#206
20050085363
2005-04-21

Welded multi-chamber tube

#207
20050019597
2005-01-27

Coated contoured crushable structural members and methods for making the same

#208
20050007575
2005-01-13

Exposure apparatus

#209
20050005986
2005-01-13

Pipe insert and pipe assembly formed therewith

#210
17865045
2023-08-15

Forming method of nickel aluminum alloy tubular part with micro flow channels

#211
17529774
2023-09-26

Orbicular valvular conduit