ClassID:

152819

F16L9/133 - CPC Classification

Classification description:

Rigid pipes of plastics with or without reinforcement the walls consisting of two layers

Recent Application in this class:
#1
20250361407
2025-11-27

PIPELINE MEMBER FOR ULTRAPURE WATER AND POLYETHYLENE-BASED RESIN COMPOSITION FOR PIPELINE MEMBER FOR ULTRAPURE WATER

#2
20250271083
2025-08-28

Coextruded Polyethylene Pipe and Methods of Making and Using Same

#3
20250198543
2025-06-19

DUCT ASSEMBLY, METHODS OF MANUFACTURE AND USE THEREOF

#4
20250144900
2025-05-08

FORMING DUCT STRUCTURE WITH OVERBRAIDED WOVEN FIBER SLEEVE

#5
20250010535
2025-01-09

LOW PERMEATION STRUCTURES FROM RECYCLED COMPOSITE MATERIAL

#6
20240344640
2024-10-17

AIR BRAKE TUBE

#7
20240271725
2024-08-15

HOLLOW COMPONENT, HOLLOW COMPONENT MANUFACTURING METHOD, AND HOLLOW COMPOMENT MANUFACTURING DEVICE

#8
20240227334
2024-07-11

Forming duct structure with overbraided woven fiber sleeve

#9
20240181722
2024-06-06

FORMING DUCT STRUCTURE WITH OVERBRAIDED WOVEN FIBER SLEEVE

#10
20240025105
2024-01-25

REINFORCED THERMOPLASTIC PIPE

#11
20230265959
2023-08-24

METHOD AND APPARATUS FOR REINFORCING PIPING AND INSTALLING A PIPE ADAPTER

#12
20230235114
2023-07-27

Chafe layer for a fluid conduit, fluid conduit, method for producing a fluid conduit and use of a polyurethane as a chafe layer and use of an ethylene copolymer as an additive

#13
20230220237
2023-07-13

UTILIZATION OF POLYUREA-BASED COATINGS IN ENHANCING STRUCTURAL INTEGRITY OF POLYETHYLENE (PE) / POLYPROPYLENE (PP) PIPES AND PIPE FITTINGS

#14
20230151223
2023-05-18

PIPELINE MEMBER FOR ULTRAPURE WATER AND POLYETHYLENE-BASED RESIN COMPOSITION FOR PIPELINE MEMBER FOR ULTRAPURE WATER

#15
20230039633
2023-02-09

Coextruded Polyethylene Pipe and Methods of Making and Using Same

#16
20220178474
2022-06-09

Pipes for carrying water

#17
20220018467
2022-01-20

MULTILAYER FUEL LINE

#18
20210396334
2021-12-23

PIPELINE FOR CONVEYING FLUIDS OR SOLIDS

#19
20210362464
2021-11-25

Structure, structure for vehicles, and air conditioning duct for vehicles

#20
20210324977
2021-10-21

PIPING FOR ULTRA-PURE WATER AND MULTI-LAYER TUBE

#21
20210252823
2021-08-19

Multilayer tube

#22
20200346426
2020-11-05

Dissipative peristaltic pump tubing

#23
20200339715
2020-10-29

PE-RT pipes and processes for making the same

#24
20200316830
2020-10-08

Composite connectors and methods of manufacturing the same

#25
20200240566
2020-07-30

Fitting for preventing distortion

#26
20200200298
2020-06-25

Multilayer water pipe for mining operations

#27
20200198203
2020-06-25

Fluid transport pipe and use thereof

#28
20200103056
2020-04-02

ELECTROSTATIC DISSIPATIVE FLUOROPOLYMER COMPOSITES AND ARTICLES FORMED THEREFROM

#29
20200096139
2020-03-26

Non-Bursting Pipe and Method of Manufacturing Same

#30
20200041063
2020-02-06

Tubing for brake and fuel systems incorporating graphene impregnated polyamides

#31
20190136032
2019-05-09

POLY(PHENYLENE ETHER) COMPOSITION, LINED PIPE AND INJECTION MOLDED ARTICLE PREPARED THEREFROM, AND METHOD OF CONTROLLING MICROBIAL GROWTH DURING WATER TRANSPORTATION AND STORAGE

#32
20190107228
2019-04-11

CONTINUOUS ON-SITE MANUFACTURED CONCRETE PIPE

#33
20190105856
2019-04-11

Hybrid polymer pipe and tile hybrid polymer

#34
20190011064
2019-01-10

Spiral-welded polymer products with a cellular wall and thermoplastic profile for its production

#35
20180328521
2018-11-15

METHOD FOR MANUFACTURING REINFORCED THERMOPLASTIC PIPES

#36
20180312679
2018-11-01

Insulated conduit including a fluoropolymer composition for use as a thermal insulation layer

#37
20180148596
2018-05-31

HIGH TEMPERATURE STABLE, ONE-PART, CURABLE THERMOSET COMPOSITIONS

#38
20180119849
2018-05-03

FIBRE-REINFORCED HOLLOW BODY FOR CHANNELLING MEDIA, IN PARTICULAR, CHEMICALLY AND/OR MECHANICALLY AGGRESSIVE MEDIA

#39
20170336000
2017-11-23

Pipe with an outer wrap

#40
20170241574
2017-08-24

Polymer-lined pipes and fittings with replaceable components

#41
20170219132
2017-08-03

Webless corrugated dual wall foundation drain and related method

#42
20170191585
2017-07-06

REINFORCED THERMOPLASTIC DUCTS AND THEIR MANUFACTURE

#43
20170082219
2017-03-23

Polymer-lined pipes and fittings with replaceable components

#44
20170058124
2017-03-02

Dynamically vulcanized polyarylene sulfide composition

#45
20160290534
2016-10-06

Method for manufacturing a reinforced composite pipe

#46
20160273499
2016-09-22

Multilayered motor vehicle pipeline

#47
20160214343
2016-07-28

Multi-layer tube

#48
20160109040
2016-04-21

Pipe Section having Polyarylene Sulfide Composition Barrier Layer

#49
20160052386
2016-02-25

Method for manufacturing a fuel tank or filling pipe and use thereof in a hybrid vehicle

#50
20160046059
2016-02-18

Extrusion blow molded tube

#51
20160033058
2016-02-04

Method of producing a composite pipe and such a composite pipe

#52
20160009597
2016-01-14

Corrosion protection for cast iron pipes and method for producing same

#53
20150367563
2015-12-24

SUBSTRATE WITH PROTECTIVE POLYVINYL CHLORIDE SLEEVE

#54
20150362097
2015-12-17

FOAM DUCT WITH CAPTURED INSERT FOR IMPROVED CONNECTABILITY

#55
20150059910
2015-03-05

PLASMA CVD APPARATUS, METHOD FOR FORMING FILM AND DLC-COATED PIPE

#56
20150000782
2015-01-01

POLYVINYL CHLORIDE - COMPOSITION, TUBE, CHANNEL OR CONTAINER, USE OF A PVC COMPOSITION AND USE OF A TUBE, OF A CHANNEL OR OF A CONTAINER

#57
20150000639
2015-01-01

MULTIPLE-LAYER FUEL LINE

#58
20140363597
2014-12-11

Duct with electrically conductive coating

#59
20140338816
2014-11-20

Ducting for a fluid transfer pipeline for an aircraft or spacecraft, method for producing same and aeronautical structure incorporating same

#60
20140338780
2014-11-20

COMPRESSED-AIR BRAKE LINE

#61
20140311606
2014-10-23

Method for filling a gap in the coating of a pipeline coated with a coating, preferably a thermo-insulating coating

#62
20140302266
2014-10-09

Polyolefin pipe with improved migration behaviour

#63
20140295118
2014-10-02

Metallized polyethylene laminates

#64
20140283940
2014-09-25

Extrudable multilayer tubing

#65
20140202572
2014-07-24

AIR-FLOW CHANNEL FOR A VENTILATION DEVICE OF A MOTOR VEHICLE, AND A METHOD FOR PRODUCING SAME

#66
20140127438
2014-05-08

STABILIZED HIGH-DENSITY POLYETHYLENE COMPOSITION WITH IMPROVED RESISTANCE TO DETERIORATION AND STABILIZER SYSTEM

#67
20140090738
2014-04-03

Rigid disposable flow path

#68
20140069546
2014-03-13

FIRE RETARDANT AND ANTI STATIC PIPE

#69
20140023812
2014-01-23

Composite waste and water transport elements and methods of manufacture for use on aircraft

#70
20130299034
2013-11-14

CONVEYING PIPE PART OF A PNEUMATIC MATERIAL CONVEYING SYSTEM AND A METHOD FOR FORMING A PIPE JOINT

#71
20130291993
2013-11-07

Pipe Section Having Unbonded Composite Barrier Layer

#72
20130291991
2013-11-07

Pipe section having polyarylene sulfide composition barrier layer

#73
20130284303
2013-10-31

Reinforcement methods for composite tube for fluid delivery system

#74
20130273290
2013-10-17

Dynamically vulcanized polyarylene sulfide composition

#75
20130269819
2013-10-17

Pipe section having bonded composite barrier layer

#76
20130263959
2013-10-10

Multi-layer cylindrical molded article

#77
20130255820
2013-10-03

Hollow article of variable wall structure density

#78
20130221001
2013-08-29

Resin-made fuel inlet pipe, and method for producing same

#79
20130056108
2013-03-07

Method of producing a composite pipe and such a composite pipe

#80
20120305083
2012-12-06

Co-extruded oxidation-resistant polyethylene pipe and method of manufacture

#81
20120227852
2012-09-13

Layer for Pipes Made of Multimodal Polyethylene Composition

#82
20120216903
2012-08-30

MULTI-LAYER TUBING AND METHOD FOR JOINING

#83
20120132310
2012-05-31

COMPOSITE TUBULAR PARTS WITH COMPLEX SHAPES

#84
20120090718
2012-04-19

Tube body for pressure transducer

#85
20120074028
2012-03-29

Fuel tank or filler pipe for this tank

#86
20120060962
2012-03-15

TUBE OR MOLDED TUBE ELEMENT

#87
20120000566
2012-01-05

RIGID DISPOSABLE FLOW PATH

#88
20110183095
2011-07-28

REFRIGERANT ADDUCTION HOLLOW ELEMENT IN A VEHICLE

#89
20110132478
2011-06-09

Industrial polyolefin piping system

#90
20110011558
2011-01-20

THERMAL CONDUCTIVITY PIPE FOR GEOTHERMAL APPLICATIONS

#91
20100307627
2010-12-09

MULTI-LAYER CYLINDRICAL MOLDED ARTICLE

#92
20100307626
2010-12-09

MULTI-LAYERED COEXTRUDED TUBE

#93
20100307625
2010-12-09

Multi-layered coextruded tube

#94
20100147446
2010-06-17

Ducting for a fluid transfer pipeline for an aircraft or spacecraft, method for producing same and aeronautical structure incorporating same

#95
20100071796
2010-03-25

Polyolefin multilayer pipe

#96
20100065144
2010-03-18

FIR anion fuel pipe for automobile and ship

#97
20090169788
2009-07-02

Impervious, chemically stable thermoplastic tubing and film

#98
20090090460
2009-04-09

Tie-layer materials, articles and methods for making and using same

#99
20090026757
2009-01-29

RISER ASSEMBLY AND METHOD OF ASSEMBLY THEREFOR

#100
20080317986
2008-12-25

Multi-layer composite comprising an EVOH layer and a protective layer

#101
20080187696
2008-08-07

Plastic hollow body, in particular plastic pipe

#102
20080047627
2008-02-28

AIR HANDLING SYSTEM DUCTWORK COMPONENT AND METHOD OF MANUFACTURE

#103
20070261752
2007-11-15

MULTIPLE-LAYER FLUID FUEL APPARATUS

#104
20070199608
2007-08-30

Dual-Layer Chemically-Inert Tubing and Machine

#105
20070122579
2007-05-31

Fibre-reinforced plastic tube

#106
20070051418
2007-03-08

MULTILAYER TUBES

#107
20060280890
2006-12-14

Impervious, chemically stable thermoplastic tubing and film

#108
20060275572
2006-12-07

Multilayer pipe for transporting water or gas

#109
20060093772
2006-05-04

Multilayered pipes comprising hydrolysis resistant polyamides

#110
20050244576
2005-11-03

Multilayer pipe and method for manufacturing one

#111
20050208247
2005-09-22

Flexible laminated plastic pipe having a chlorinated poly(vinyl chloride) hollow core

#112
20050161102
2005-07-28

Collapse tolerant flexible pipe and method of manufacturing same

#113
20050161101
2005-07-28

Highly kink-resistant corrugated tubing

#114
20050069702
2005-03-31

Resinous tube

#115
20050016609
2005-01-27

Multilayer pipe, in particular for an engine cooling circuit