ClassID:

152814

F16L9/121 - CPC Classification

Classification description:

Rigid pipes of plastics with or without reinforcement with three layers

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

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

#2
20260036227
2026-02-05

MULTI-LAYERED PIPE

#3
20250361956
2025-11-27

PIPE FOR A CRYOGENIC FLUID, PIPE ASSEMBLY, AND AEROSPACE SYSTEM WITH PIPE

#4
20250257821
2025-08-14

Multilayer Tube

#5
20250010535
2025-01-09

LOW PERMEATION STRUCTURES FROM RECYCLED COMPOSITE MATERIAL

#6
20240418299
2024-12-19

MULTI-LAYERED PIPE

#7
20240344640
2024-10-17

AIR BRAKE TUBE

#8
20240263722
2024-08-08

MULTILAYER POLYARYLENE SULFIDE TUBES

#9
20240255075
2024-08-01

RESIN RICH POLYUREA-BASED INTEGRATED EXTERNAL LAYER FOR REINFORCED THERMOSETTING RESIN PIPING PROTECTION

#10
20240218945
2024-07-04

PIPELINE ASSEMBLY AND MANUFACTURING METHOD THEREFOR

#11
20230313915
2023-10-05

AIRCRAFT AIR DUCT PIPE COMPRISING AT LEAST ONE PIPE COUPLING AND METHOD OF MANUFACTURING SAID PIPE

#12
20230304611
2023-09-28

ANTI-HYDROGEN EMBRITTLEMENT WIRE REINFORCED COMPOSITE PIPE

#13
20230304610
2023-09-28

Multilayer tube for automotive applications

#14
20230213137
2023-07-06

COMPRESSED SHEETS WITH HIGH STRETCHABILITY

#15
20230130880
2023-04-27

Resin rich polyurea-based integrated external layer for reinforced thermosetting resin piping protection

#16
20220243471
2022-08-04

Reinforced structural component for resisting tensile loading and providing impact resistance

#17
20220074524
2022-03-10

Fuel pipe and fuel conveyance method using same

#18
20220065369
2022-03-03

Cross-linked polyethylene type a (PEX-A) pipe

#19
20220041849
2022-02-10

Composites having a thermoplastic matrix

#20
20210348702
2021-11-11

MULTILAYER TUBE

#21
20210324977
2021-10-21

PIPING FOR ULTRA-PURE WATER AND MULTI-LAYER TUBE

#22
20210213712
2021-07-15

Layered body and tube

#23
20210199224
2021-07-01

Fibre reinforced polymer tube

#24
20210018117
2021-01-21

Pipe structure having a foam core

#25
20200400251
2020-12-24

Multilayer composite pipe and pipe assemblies including reflective insulation

#26
20200355313
2020-11-12

Insulating inserts for field joints of coated rigid pipelines

#27
20200200299
2020-06-25

TUBULAR BODY AND METHOD FOR MANUFACTURING TUBULAR BODY

#28
20200116271
2020-04-16

Reinforcement band for irrigation valve

#29
20200041063
2020-02-06

Tubing for brake and fuel systems incorporating graphene impregnated polyamides

#30
20190271432
2019-09-05

Field joint arrangement for a pipeline and protecting method thereof

#31
20190092481
2019-03-28

AIR CONDITIONING PIPE AND PRODUCTION METHOD

#32
20190024840
2019-01-24

Composite article

#33
20190024839
2019-01-24

Composite article

#34
20190024838
2019-01-24

Composite article

#35
20190017647
2019-01-17

Composite article

#36
20180312679
2018-11-01

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

#37
20180274712
2018-09-27

Insulating inserts for field joints of coated rigid pipelines

#38
20180147753
2018-05-31

METHOD FOR PRODUCING A MULTILAYER PIPE CONTAINING MICROFIBERS, AND SUCH A PIPE

#39
20180119849
2018-05-03

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

#40
20180031164
2018-02-01

Subsea pipe-in-pipe structures

#41
20180003058
2018-01-04

VENTILATION DUCT

#42
20170368805
2017-12-28

Multilayered tube for transporting liquid medicine and polyamide resin composition

#43
20170350551
2017-12-07

Method for protecting field joint arrangement for a pipeline

#44
20170336001
2017-11-23

Pipe with an outer wrap

#45
20170299089
2017-10-19

POLYURETHANE-POLYETHYLENE DELAMINATION RESISTANT TUBING WITH GAS BARRIER PROPERTIES

#46
20170274603
2017-09-28

Fiber-reinforced member and method for manufacturing same

#47
20170030492
2017-02-02

Wear-heat-resistant anti-bacterial anti-fouling steel wire framed pipe and manufacturing method thereof

#48
20160363251
2016-12-15

Double-wall pipe with a heat insulating layer and a plastic outer pipe thereof

#49
20160290534
2016-10-06

Method for manufacturing a reinforced composite pipe

#50
20160273499
2016-09-22

Multilayered motor vehicle pipeline

#51
20160238165
2016-08-18

High pressure pipe and use thereof

#52
20160178091
2016-06-23

Composite tubing and method for making and using same

#53
20160033058
2016-02-04

Method of producing a composite pipe and such a composite pipe

#54
20160018047
2016-01-21

Thermally insulated corrugated conduit

#55
20150219250
2015-08-06

Compositions for coating pipe

#56
20150217333
2015-08-06

Methods for coating pipe

#57
20150096667
2015-04-09

Composite pipe and method of manufacture

#58
20150075663
2015-03-19

PIPE AND METHOD FOR MANUFACTURING PIPE

#59
20140363597
2014-12-11

Duct with electrically conductive coating

#60
20140295118
2014-10-02

Metallized polyethylene laminates

#61
20140246110
2014-09-04

Layered tube and layer for use in same

#62
20140151937
2014-06-05

Production method of plastic pipe in layers

#63
20140020784
2014-01-23

PROCESS FOR THE CONTINUOUS PRODUCTION OF FOAMS IN PIPES

#64
20130248043
2013-09-26

STRUCTURAL TUBE COMPRISING A FIBRE REINFORCED POLYMER

#65
20130190723
2013-07-25

Polyurethane-polyethylene delamination resistant tubing with gas barrier properties

#66
20130186469
2013-07-25

MULTI-LAYERED TUBING

#67
20130056108
2013-03-07

Method of producing a composite pipe and such a composite pipe

#68
20120241547
2012-09-27

Method for handling a fiber reinforced plastic tube, and combination of such tube wound on a reel

#69
20120073683
2012-03-29

METHOD FOR PRODUCING A MOLDED PART, AND A MOLDED PART THUS PRODUCED

#70
20110041947
2011-02-24

Composite pipe and method of manufacture

#71
20110023985
2011-02-03

Multilayer tube, particularly for industrial systems for the production and/or treatment of chemical compounds and the like

#72
20100084037
2010-04-08

METHODS AND COMPOSITIONS FOR COATING PIPE

#73
20100035116
2010-02-11

FLUOROPOLYMER/EVOH/PPA MULTILAYER PIPE FOR CONVEYING HYDROGEN AND A FUEL CELL ELECTRICITY PRODUCTION ASSEMBLY INCLUDING SUCH A PIPE

#74
20090314376
2009-12-24

MODULAR CONDUIT STRUCTURE AND METHOD OF MAKING SAME

#75
20090272479
2009-11-05

Process for lining the interior surface of a metal pipe for conveying oil

#76
20090266437
2009-10-29

Coated pipes for conveying oil

#77
20080185065
2008-08-07

Multilayer Pipe

#78
20080011381
2008-01-17

Protective and Thermal Insulative Barrier

#79
20070261752
2007-11-15

MULTIPLE-LAYER FLUID FUEL APPARATUS

#80
20070259147
2007-11-08

Pipe

#81
20070231520
2007-10-04

Air brake line

#82
20060280889
2006-12-14

Tubular nylon alloy members for tubing and hose constructions

#83
20060275572
2006-12-07

Multilayer pipe for transporting water or gas

#84
20060169343
2006-08-03

Plastics pipe

#85
20060124191
2006-06-15

Plastics pipe

#86
20060083884
2006-04-20

Multilayer tube comprising po, adhesive, evoh, pa, and protection layers

#87
20060017281
2006-01-26

Coated pipes for conveying oil

#88
20060013980
2006-01-19

Plastics pipe

#89
20050257847
2005-11-24

Multi-layer duct for air distribution in air conditioning systems for vehicles, in particular aircrafts, and an element for fixing the duct to the structure of an aircraft

#90
20050208247
2005-09-22

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

#91
20050173012
2005-08-11

Coated pipes for conveying oil

#92
20050173011
2005-08-11

Multi-layer tubing having electrostatic dissipation for handling hydrocarbon fluids

#93
20050025920
2005-02-03

Thermoplastic multilayer composite in the form of a hollow body

#94
20050016609
2005-01-27

Multilayer pipe, in particular for an engine cooling circuit

#95
20050005989
2005-01-13

Cross-linked thermoplastic tubing