ClassID:

152822

F16L9/153 - CPC Classification

Classification description:

Rigid pipes; Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and concrete with or without reinforcement

Recent Application in this class:
#1
20260002612
2026-01-01

Method for Refurbishing Pre-Stressed Concrete Cylinder Pipe and Refurbished Pre-Stressed Concrete Cylinder Pipe

#2
20220333718
2022-10-20

Ultra-high performance fibre-reinforced concrete pipe for pressurized fluid transport

#3
20210180726
2021-06-17

Carbon steel-concrete/cement mortar-stainless steel composite submarine pipeline

#4
20170298729
2017-10-19

Integrated jacking pipes

#5
20160375465
2016-12-29

Method and apparatus for coating a pipe

#6
20160356413
2016-12-08

Large-aperture spiral welded steel pipe with metal linings and manufacturing method thereof

#7
20160319962
2016-11-03

Underground steel-concrete structure pipeline with spiral composite reinforcement ring on inner wall and manufacturing method thereof

#8
20160009597
2016-01-14

Corrosion protection for cast iron pipes and method for producing same

#9
20150330535
2015-11-19

Liner for concrete article

#10
20100171301
2010-07-08

Multiwall pipe lip seal joint

#11
20090103984
2009-04-23

Gas subsea transmission system and submersible suspension pressure-equaliser pipeline

#12
20080313907
2008-12-25

Method for reinforcing a metal tubular structure

#13
20080191470
2008-08-14

Pipe Bend, and Method of Making a Pipe Bend

#14
20070215267
2007-09-20

Joint fill composition and method

#15
20050246995
2005-11-10

Method of reinforcing an embedded cylindrical pipe

#16
20050236061
2005-10-27

Sandwich pipes for ultra-deep waters

#17
18924432
2025-05-06

Method for refurbishing pre-stressed concrete cylinder pipe and refurbished pre-stressed concrete cylinder pipe

#18
17461480
2023-01-17

Pre-stressed concrete pipe

#19
15649531
2018-11-06

Multi-layer removable duct liners