ClassID:

152826

F16L9/18 - CPC Classification

Classification description:

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

Sub-classes:
Recent Application in this class:
#1
20260043497
2026-02-12

Multi-layer pipe and method of manufacturing a multi-layer pipe

#2
20260036243
2026-02-05

VACUUM-INSULATED PIPE ASSEMBLY

#3
20260029078
2026-01-29

Transfer Line Module with Integrated Sensors

#4
20260002459
2026-01-01

SILENCER

#5
20250283558
2025-09-11

TRIPLE-WALLED CONDUIT, AIRCRAFT COMPRISING AT LEAST ONE SUCH TRIPLE-WALLED CONDUIT

#6
20250137571
2025-05-01

Thermal Insulation System for Exhaust Gas Temperature Management

#7
20250033788
2025-01-30

DOUBLE-WALL PIPE FOR AN AIRCRAFT FUEL SYSTEM

#8
20240410235
2024-12-12

MANUFACTURING METHODS FOR DUAL CONCENTRIC TUBING

#9
20240301984
2024-09-12

VACUUM-INSULATED DOUBLE-WALL PIPING FOR TRANSPORTING CRYOGENIC FLUID

#10
20240295281
2024-09-05

COUPLING FOR A DOUBLE-WALLED PIPE WITH LOW HEAT INGRESS

#11
20240288099
2024-08-29

A METHOD OF MANUFACTURING A DOUBLE-WALLED ELBOW PIPE SEGMENT, A PIPE ASSEMBLY

#12
20240218945
2024-07-04

PIPELINE ASSEMBLY AND MANUFACTURING METHOD THEREFOR

#13
20240183467
2024-06-06

LARGE-DIAMETER THIN-WALL SPIRAL WELDED PIPE AND METHOD FOR MANUFACTURING SAME

#14
20240175527
2024-05-30

AIRCRAFT PIPEWORK ASSEMBLY

#15
20240167606
2024-05-23

TESTABLE TERMINATION FITTING

#16
20240060580
2024-02-22

BIODEGRADABLE IRRIGATION PIPE

#17
20240060579
2024-02-22

Exhaust pipe accessory and uses thereof

#18
20240059423
2024-02-22

FLUID TRANSPORT DEVICE AND METHOD FOR ASSEMBLING AND DISASSEMBLING A FLUID TRANSPORT DEVICE

#19
20240044440
2024-02-08

Manufacture of Pipe-in-Pipe Assemblies

#20
20230400125
2023-12-14

METHOD AND APPARATUS FOR ACHIEVING ZERO EMISSIONS OF GASEOUS SUBSTANCES IN RTP PIPELINES AND CONDUITS

#21
20230383884
2023-11-30

SYSTEM TO CONVEY A FLUID

#22
20230358357
2023-11-09

THERMAL INSULATION PIPE

#23
20230302751
2023-09-28

Monitoring Cable Integrity During Pipeline Manufacture

#24
20230294510
2023-09-21

Fuel line safety protection system

#25
20230105113
2023-04-06

Testable termination fitting

#26
20230073632
2023-03-09

METHOD AND SYSTEM FOR TRANSPORTING HYDROGEN GAS VIA A PIPELINE

#27
20230025308
2023-01-26

Fuel piping, fuel piping connecting structure, and method for manufacturing fuel piping

#28
20230022292
2023-01-26

Spooling and Installing Trace-Heated Pipelines of Pipe-in-Pipe Configuration

#29
20230011161
2023-01-12

Mitigation of Buckling in Subsea Pipe-in-Pipe Systems

#30
20230003456
2023-01-05

Double pipe for heat exchanger

#31
20220373109
2022-11-24

Double-wall spiral welded pipe and manufacturing method thereof

#32
20220357050
2022-11-10

Pre-fabricated grease duct system

#33
20220341513
2022-10-27

Bioinert piping

#34
20220325827
2022-10-13

Water circulation pipeline, control box and massage water pool

#35
20220266323
2022-08-25

Double walled tube segment and method for producing said tube segment

#36
20220259882
2022-08-18

MODULAR TUBE AND METHOD OF MANUFACTURING

#37
20220205858
2022-06-30

Pipeline utilizing thick-matter pump for determining a pressure and/or a wall thickness simply, durably and reliably

#38
20220186590
2022-06-16

Nozzle for water choking

#39
20220162916
2022-05-26

Manufacturing methods for dual concentric tubing

#40
20220090710
2022-03-24

Exhaust pipe accessory and uses thereof

#41
20220090709
2022-03-24

DUAL-WALLED FLUID TRANSPORTATION SYSTEMS AND RELATED METHODS

#42
20220090708
2022-03-24

Tubing component having a cladding of fillet weld, and method for producing a tubing component

#43
20220082197
2022-03-17

Intelligent and durable buried drainage pipe and a method of separation and transmission

#44
20220057023
2022-02-24

Double pipe and method for manufacturing same

#45
20210404588
2021-12-30

Coaxial tubing systems with securable spacers

#46
20210356067
2021-11-18

Method of manufacturing spacers for pipe-in-pipe systems and spacer for a pipe-in-pipe structure

#47
20210291880
2021-09-23

TUBE SEGMENT FOR EVACUATED TUBE TRANSPORT SYSTEM

#48
20210270405
2021-09-02

Conduits for transporting fluids and methods of fabricating the same

#49
20210215289
2021-07-15

Modular heat insulation structure for pipelines

#50
20210202121
2021-07-01

Flow Mixing T-Unit of Reactor Volume Control System

#51
20210190249
2021-06-24

System and method for heating a conduit

#52
20210146418
2021-05-20

Tube structure and a method for manufacturing a tube structure

#53
20210116056
2021-04-22

Crimp fittings and systems, kits, and methods incorporating the same

#54
20210087482
2021-03-25

Pipe structure, gasification combined cycle power generation device, and pipe structure assembly method

#55
20210010979
2021-01-14

Inline cycle fuse

#56
20210010619
2021-01-14

Long tubular pipe comprising a separating member and methods for mounting and bending such a pipe

#57
20200406326
2020-12-31

Robot for straightening double thin-wall section pipe with undesirably shaped cavities

#58
20200400266
2020-12-24

Insulation of pipe-in-pipe systems

#59
20200384850
2020-12-10

Assembly for an urea tank system

#60
20200370749
2020-11-26

Cross compatible adapter for chimney sections with different outer diameters

#61
20200331623
2020-10-22

Aircraft motive flow line

#62
20200318777
2020-10-08

Decompression heat-insulating pipe structure

#63
20200256213
2020-08-13

Fluid transfer assembly for rotational equipment

#64
20200248845
2020-08-06

Dual pipe

#65
20200224813
2020-07-16

Electric-resistance-welded stainless clad steel pipe or tube

#66
20200220340
2020-07-09

Thermal-insulated multi-walled pipe for superconducting power transmission and laying method therefor

#67
20200217442
2020-07-09

Cable management apparatus and system

#68
20200200329
2020-06-25

Pipe apparatus, pipe system, and method of detecting a leak in a conduit

#69
20200200318
2020-06-25

Conduits for transporting fluids

#70
20200166281
2020-05-28

Double pipe and method for manufacturing same

#71
20200103173
2020-04-02

Heat exchanger for quenching reaction gas

#72
20200088690
2020-03-19

Inline cycle fuse

#73
20200049297
2020-02-13

Triple pipe heating device of easy installation for heating exhaust gas in semiconductor and LCD manufacturing process

#74
20200041063
2020-02-06

Tubing for brake and fuel systems incorporating graphene impregnated polyamides

#75
20200017231
2020-01-16

Heated pipe for liquid flows

#76
20200011454
2020-01-09

Tube structure with a protected sensor and method for manufacturing a tube structure with a protected sensor

#77
20190293301
2019-09-26

Pre-fabricated grease duct system

#78
20190291155
2019-09-26

Tubular element to transfer abrasive materials, in particular concrete, and method to make it

#79
20190271412
2019-09-05

Reelable pipe

#80
20190257105
2019-08-22

ADAPTER FOR POOL CLEANING SYSTEM

#81
20190242289
2019-08-08

Heat insulating pipe system and processing system

#82
20190219218
2019-07-18

Method of producing electric-resistance-welded stainless clad steel pipe or tube

#83
20190184437
2019-06-20

Clad welded pipe or tube and method of producing same

#84
20190107341
2019-04-11

Double pipe

#85
20190100079
2019-04-04

Internal heat exchanger double-tube structure of air conditioning system having alternative refrigerant applied thereto

#86
20190086083
2019-03-21

Duct assembly including helicoidal structure and gas turbine combustor including the same

#87
20190041067
2019-02-07

Water systems

#88
20180356009
2018-12-13

Method for manufacturing a tube of metal as well as a tube of metal

#89
20180313471
2018-11-01

COMPOSITE PIPE COMPRISED OF A CARRIER PIPE AND AT LEAST ONE PROTECTIVE PIPE, AND METHOD FOR THE PRODUCTION THEREOF

#90
20180259111
2018-09-13

Segment of pipe-in-pipe pipeline and the use of an acoustic transducer measurement system for the reduced pressure annulus

#91
20180231170
2018-08-16

Decompression heat-insulating pipe structure

#92
20180224053
2018-08-09

Decompression heat-insulating pipe structure

#93
20180187982
2018-07-05

Tube assembly

#94
20180149550
2018-05-31

Monitoring system and method for a multiple-walled fluid system

#95
20180087694
2018-03-29

Subsea pipe-in-pipe structures

#96
20180087327
2018-03-29

Termination bulkheads for subsea pipe-in-pipe systems

#97
20180080582
2018-03-22

Double-walled pipe

#98
20180072513
2018-03-15

Pipe for conveying abrasive materials such as concrete, apparatus and method for producing said pipe

#99
20180066789
2018-03-08

High Thermal Efficiency Tube for Conveying Fluids

#100
20180066773
2018-03-08

Piping system with leak detection

#101
20180051841
2018-02-22

Venting system for lined pipe

#102
20180051539
2018-02-22

Sealing arrangements for subsea pipe-in-pipe systems

#103
20180044748
2018-02-15

Steel material for composite pressure vessel liner and steel pipe or tube for composite pressure vessel liner

#104
20180038520
2018-02-08

Anti-slide device for the self-centering of an inner tube inside an outer tube of an element of unit length of a subsea pipeline for transporting fluids

#105
20180031164
2018-02-01

Subsea pipe-in-pipe structures

#106
20180023767
2018-01-25

Sealing arrangements for subsea pipe-in-pipe systems

#107
20170356590
2017-12-14

Pipe arrangement with support sections on the outer pipe

#108
20170350867
2017-12-07

Inline cycle fuse

#109
20170350540
2017-12-07

Double walled tube and manufacture thereof

#110
20170336007
2017-11-23

Shrouded pipe

#111
20170335997
2017-11-23

Shrouded pipe

#112
20170332700
2017-11-23

Methods of manufacturing a double-walled tube

#113
20170321824
2017-11-09

Method of manufacturing an insulated flowpath assembly

#114
20170307112
2017-10-26

Low temperature fluid dual structure pipe and low temperature fluid dual structure storage tank

#115
20170299837
2017-10-19

Optical fiber cable installation in a pressure sewerage

#116
20170267368
2017-09-21

Fuel pipe of aircraft and aircraft

#117
20170261131
2017-09-14

Polymer compositions

#118
20170259644
2017-09-14

Nested HVAC lines

#119
20170114559
2017-04-27

Adapter for pool cleaning system

#120
20170074446
2017-03-16

Submarine or buried piping and pipelines insulated with liquids

#121
20170059079
2017-03-02

Insulated fluid conduit

#122
20170023158
2017-01-26

Chemical dispense system with reduced contamination

#123
20160327188
2016-11-10

Dual walled titanium tubing and methods of manufacturing the tubing

#124
20160312924
2016-10-27

Double-walled pipe with integrated heating capability for an aircraft or spacecraft

#125
20160228997
2016-08-11

Dual walled titanium tubing and methods of manufacturing the tubing

#126
20160221244
2016-08-04

System and method of inspecting inner smooth wall of corrugated dual wall pipe

#127
20160199914
2016-07-14

OBJECT PRODUCTION

#128
20160178111
2016-06-23

Insulation system

#129
20160138749
2016-05-19

Electrically heated fluid transportation pipe

#130
20160109053
2016-04-21

Pipe section

#131
20160089835
2016-03-31

System and method for positioning at least one spacer in a longitudinal pipe

#132
20160061362
2016-03-03

DUCTING APPARATUS

#133
20160018027
2016-01-21

Coilable dual wall corrugated pipe and related method

#134
20160003556
2016-01-07

Tube assembly

#135
20160003380
2016-01-07

Insulated flowpath assembly

#136
20150369481
2015-12-24

CHIMNEY PIPE, EXHAUST GAS SYSTEM AND METHOD FOR PRODUCING AN EXHAUST GAS SYSTEM HAVING SUCH A CHIMNEY PIPE

#137
20150369413
2015-12-24

Double wall tube bolted flange fitting

#138
20150369400
2015-12-24

Double wall tube assemblies

#139
20150338010
2015-11-26

Thermally insulated and heated double-walled pipe segment for fitting by screw fastening, and a method of implementing such a pipe segment

#140
20150337994
2015-11-26

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

#141
20150322820
2015-11-12

Shrouded conduit for arranging a fluid flowpath

#142
20150316179
2015-11-05

COMPOSITE TUBULAR STRUCTURES

#143
20150267937
2015-09-24

Fire-rated modular duct assembly suitable for exhausting flammable or hazardous gases, vapours and other materials

#144
20150198267
2015-07-16

System and method for a pipe assembly

#145
20150175468
2015-06-25

Mold assembly with concentric tubes for leakproof supply of fluid and vacuum

#146
20150173321
2015-06-25

Conduit and a method of cleaning a conduit

#147
20150159783
2015-06-11

Pipe material

#148
20150144681
2015-05-28

Method for making corrosion resistant fluid conducting parts

#149
20150129076
2015-05-14

FUEL SUPPLY ROUTING ASSEMBLY FOR ENGINE TO DETECT FUEL LEAKAGE

#150
20150053820
2015-02-26

Line System for an Aircraft and Aircraft with a Line System

#151
20150053297
2015-02-26

CONTAINER WAND ASSEMBLY

#152
20150013953
2015-01-15

FLUID CONDUIT SYSTEMS

#153
20150013139
2015-01-15

Spacer

#154
20150010356
2015-01-08

Fluid spill containment, location, and real time notification device with cable based sensor

#155
20140363597
2014-12-11

Duct with electrically conductive coating

#156
20140270624
2014-09-18

Method for installing a sensing cable along a pipeline

#157
20140224334
2014-08-14

Chemical dispense system with reduced contamination

#158
20140202571
2014-07-24

Optical fiber cable installation in a pressure sewerage

#159
20140196808
2014-07-17

Supply system for a liquid

#160
20140182733
2014-07-03

Extruded multiwall tubular structure

#161
20140182706
2014-07-03

Fluid spill containment, location, and real time notification device and system

#162
20140116561
2014-05-01

Gas distribution assembly

#163
20140116556
2014-05-01

Pipe-in-pipe apparatus including an engineered pipe

#164
20140110050
2014-04-24

INSULATION SYSTEM AND METHOD OF APPLICATION THEREOF

#165
20140034179
2014-02-06

INSULATION SYSTEM AND METHOD OF APPLICATION THEREOF

#166
20140001037
2014-01-02

WINDPIPE FOR VACUUM COATING DEVICE AND VACUUM COATING DEVICE USING THE WINDPIPE

#167
20130340970
2013-12-26

Collection of oil floating on a water surface by contact with a cold surface

#168
20130312865
2013-11-28

Double-wall pipe and production process

#169
20130277959
2013-10-24

Connector

#170
20130264918
2013-10-10

Housing and method of making same

#171
20130195557
2013-08-01

Method of manufacturing a mechanically lined pipe

#172
20130186498
2013-07-25

Internally heated fluid transfer pipes with internal helical heating ribs

#173
20130186142
2013-07-25

Conduit structure for molten glass, vacuum degassing apparatus, vacuum degassing method for molten glass and process for producing glass products employing said conduit structure

#174
20130181439
2013-07-18

Seal assembly for nested dual drill pipe

#175
20130181438
2013-07-18

Structure for a nested dual drill pipe joint

#176
20130174934
2013-07-11

Fire-rated modular duct assembly suitable for exhausting flammable or hazardous gases, vapours and other materials

#177
20130087238
2013-04-11

DOUBLE-WALLED FLUID TRANSPORT PIPE, INSTALLATION OF SUCH A PIPE, AND AIRCRAFT COMPRISING SUCH A PIPE

#178
20130081734
2013-04-04

Electrostatic bonding of coaxial tubing

#179
20130070889
2013-03-21

Double-walled tube with interface gap and production method therefor

#180
20130025687
2013-01-31

Water self-shutoff tubular

#181
20130011620
2013-01-10

Hollow profile used in the manufacture of a pipe

#182
20130000747
2013-01-03

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

#183
20120305088
2012-12-06

Conduit and a method of cleaning a conduit

#184
20120273169
2012-11-01

Pipe having variable cross section

#185
20120192984
2012-08-02

Double layer conduit

#186
20120138183
2012-06-07

Method for manufacturing rigid tubular pipes having double casing, and facility dedicated to manufacture of said pipes

#187
20120104172
2012-05-03

Fuel line in an aircraft

#188
20120049509
2012-03-01

SECONDARY CONTAINED CSST PIPE AND FITTING ASSEMBLY

#189
20120031616
2012-02-09

Cylindrical Truss Structure Reinforced Pipe

#190
20110214847
2011-09-08

DOUBLE PIPE AND HEAT EXCHANGER HAVING THE SAME

#191
20110163534
2011-07-07

SOLAR HOT WATER STORAGE SYSTEM AND DUAL PASSAGEWAY FITTING ASSEMBLY

#192
20110125142
2011-05-26

CRYOSURGICAL PROBE WITH VACUUM INSULATION TUBE ASSEMBLY

#193
20110120576
2011-05-26

Fluid transfer device having leak indication and method of making same

#194
20110101676
2011-05-05

Pipe stalk and method of assembling a pipeline therefrom

#195
20110098995
2011-04-28

Method for designing concentric axis double hot gas duct for very high temperature reactor

#196
20110073208
2011-03-31

Double-wall pipe, method of manufacturing the same and refrigerant cycle device provided with the same

#197
20110031741
2011-02-10

Apparatus and method for sealing collars of double-wall bellows and double-wall bellows so obtained that can be fitted with crack monitoring

#198
20100313987
2010-12-16

Liquefied natural gas pipeline with near zero coefficient of thermal expansion

#199
20100285327
2010-11-11

Corrosion resistant fluid conducting parts, methods of making corrosion resistant fluid conducting parts and equipment and parts replacement methods utilizing corrosion resistant fluid conducting parts

#200
20100282353
2010-11-11

Coaxial Pipe Element In Which The Inner Pipe Is Under Strees, And A Method Of Fabrication

#201
20100230953
2010-09-16

Coaxial pipe element

#202
20100175689
2010-07-15

Catalyzed hot gas heating system for pipes

#203
20100175687
2010-07-15

Catalyzed hot gas heating system for concentrated solar power generation systems

#204
20100107639
2010-05-06

Fuel nozzle assembly for use with a gas turbine engine and method of assembling same

#205
20100101676
2010-04-29

Composite tubing

#206
20100096037
2010-04-22

Multi-tubular fluid transfer conduit

#207
20100086365
2010-04-08

System and method for deployment of a cold water pipe

#208
20100064988
2010-03-18

Steam generator for sodium cooled fast reactor, heat transfer tubes thereof, and leak detection unit for heat transfer tube thereof

#209
20100037974
2010-02-18

Duct section, system and method for constructing same

#210
20100018599
2010-01-28

Double wall duct system

#211
20100012217
2010-01-21

Embedded metallic tubes with compression fit and method for manufacturing the same

#212
20090301596
2009-12-10

INSULATION FOR PIPE-IN-PIPE SYSTEMS

#213
20090197031
2009-08-06

Aircraft conduit

#214
20090142138
2009-06-04

Pipe structure and methods of laying and use of a pipeline including such a pipe structure

#215
20090084457
2009-04-02

Transfer pipe of dried concentrate and breakage detecting method of transfer pipe

#216
20090025815
2009-01-29

Pipeline and Method for Manufacturing That Pipeline

#217
20090000681
2009-01-01

REINFORCED DOUBLE-WALLED PIPE AND MANUFACTURING METHOD

#218
20080315578
2008-12-25

Junction part for coaxial pipe elements, and a method of joining together coaxial pipe elements

#219
20080314469
2008-12-25

Double wall pipe

#220
20080149210
2008-06-26

Light and reinforced undersea coaxial pipe element

#221
20080147055
2008-06-19

Cryosurgical probe with vacuum insulation tube assembly

#222
20080057249
2008-03-06

Ribbed core multi-wall structure

#223
20080030023
2008-02-07

Compound tube and method of producing the same

#224
20080014812
2008-01-17

Buoyancy Control Systems for Tubes

#225
20070256682
2007-11-08

Gasket-less vent pipe coupling

#226
20070246117
2007-10-25

Method of manufacturing double pipe

#227
20070209730
2007-09-13

Sub-sea pipe-in-pipe riser/production system

#228
20070193676
2007-08-23

Method for producing a highly rigid composite material roller

#229
20070125439
2007-06-07

Composite tubing

#230
20070082215
2007-04-12

Double walled metal tube, metal band and strip, and method of coating a metal strip

#231
20070081928
2007-04-12

Component of an exhaust gas system

#232
20070052229
2007-03-08

Double containment pressure termination fitting for dissimilar materials

#233
20070034274
2007-02-15

Extrusion apparatus

#234
20060213566
2006-09-28

VACUUM INSULATED EXHAUST SYSTEM

#235
20060196568
2006-09-07

Flexible, compression resistant and highly insulating systems

#236
20060174468
2006-08-10

Method of manufacturing double pipe

#237
20060171781
2006-08-03

Pipeline trench system and method of construction

#238
20060156530
2006-07-20

Method for manufacturing a double walled pipeline

#239
20060112556
2006-06-01

Method and apparatus of manufacturing grooved pipe, and structure thereof

#240
20060108791
2006-05-25

Semiconductor apparatuses and pipe supports thereof

#241
20060096744
2006-05-11

Double-wall pipe, method of manufacturing the same and refrigerant cycle device provided with the same

#242
20060096314
2006-05-11

Double-wall pipe and refrigerant cycle device using the same

#243
20060084331
2006-04-20

Buoyancy control systems for tubes

#244
20060062229
2006-03-23

Terminal adapter device capable of performing IEEE1394-to-Ethernet conversion

#245
20060061100
2006-03-23

Connector assembly for corrosive gas supply pipe

#246
20060027628
2006-02-09

Corrosion resistant fluid conducting parts, methods of making corrosion resistant fluid conducting parts and equipment and parts replacement methods utilizing corrosion resistant fluid conducting parts

#247
20050277347
2005-12-15

Buoyancy control systems for tubes

#248
20050264003
2005-12-01

Pipe joint assembly

#249
20050257833
2005-11-24

Contained pipeline system with brine filled interstitial space and method for detecting leakage in same

#250
20050212285
2005-09-29

Dual-walled piping system and methods

#251
20050200084
2005-09-15

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

#252
20050167982
2005-08-04

Corrugated plastic pipe sections having flanged ends and structurally tight joints thereof

#253
20050166666
2005-08-04

Piping structure having leak detection function and leak detector

#254
20050155390
2005-07-21

Apparatus for manufacturing porous glass preform for optical fiber

#255
20050155352
2005-07-21

Gas turbine multiple sectioned exhaust duct

#256
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

#257
20050089707
2005-04-28

Shaped contoured crushable structural members and methods for making the same

#258
20050054228
2005-03-10

Mid-line connector and method for pipe-in-pipe electrical heating

#259
20050042034
2005-02-24

Pipeline trench system and method of encasing for spill containment

#260
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