F28F11/02 - CPC Classification Index

ClassID:

162212 ⎘

F28F11/02 - CPC Classification

Classification description:

Arrangements for sealing leaky tubes and conduits using obturating elements, e.g. washers, inserted and operated independently of each other

Recent Application in this class:

20260132996

2026-05-14

CONNECTOR DEVICE

20250003543

2025-01-02

Expandable Tapered Pin Plug For Heat Exchangers and Air Cooled Heat Exchangers

20230235845

2023-07-27

Heat exchanger tube plug installation

20230184497

2023-06-15

Tube transition

20230040303

2023-02-09

Heat exchanger tube plug installation

20220381389

2022-12-01

Expandable tapered pin plug for heat exchangers and air cooled heat exchangers

20220290931

2022-09-15

Heat exchanger tube plug

20210018279

2021-01-21

Seal and a tubular heat exchanger using such seal

20200049431

2020-02-13

Plugging a heat exchanger tube

#10

20190310023

2019-10-10

MULTI-PROCESS DETACHABLE HEAT EXCHANGER AND DEDICATED HEAT EXCHANGE PLATE THEREOF

#11

20180142884

2018-05-24

Method of predicting wear on tubes of steam generator

#12

20170045311

2017-02-16

Replacement tube plug for heat exchanger

#13

20170023239

2017-01-26

Method of predicting wear on tubes of steam generator

#14

20160356487

2016-12-08

Enhanced device for piercing plugs in a steam generator

#15

20150300760

2015-10-22

Maximum expansion plug for heat exchanger tubes

#16

20150292822

2015-10-15

Device for closing inner tubes in a tubular heat exchanger

#17

20140263337

2014-09-18

Centrally threaded plug for heat exchanger tube and removal tool

#18

20140008045

2014-01-09

Heat exchanger pressure test shield

#19

20130199462

2013-08-08

Steam generator heating tube repair device and repair method

#20

20130192049

2013-08-01

System for plugging heat exchanging tubes

#21

20130186501

2013-07-25

Plug for heat-conducting tube, device for attaching plug for heat-conducting tube, and method for plugging heat conducting tube

#22

20120137517

2012-06-07

Method for marking tubes in a shell and tube heat exchanger

#23

20120118547

2012-05-17

Tube plug for a heat exchanger tube

#24

20110247786

2011-10-13

Heat exchanger maintenance technique

#25

20110240278

2011-10-06

Plug kit for pressured components

#26

20110240272

2011-10-06

Assembly for plugging a tube

#27

20110036547

2011-02-17

Plate heat exchanger

#28

20100223937

2010-09-09

Heat Exchanger Coupling Blocking Plug

#29

20100132823

2010-06-03

Insert tube and a system of insert tubes

#30

20090272465

2009-11-05

MEMORY METAL PLUG WITH EXTENDED SHAFT

#31

20090211094

2009-08-27

METHOD AND APPARATUS FOR INSTALLING NITINOL PLUG

#32

20080268389

2008-10-30

Insert Tube and a System of Insert Tubes

#33

20060191119

2006-08-31

Method for inspection and repair

#34

20060096736

2006-05-11

Flow through tube plug