ClassID:

156821

F23J2213/202 - CPC Classification

Classification description:

Chimneys or flues; Joints; Connections between duct or stack sections

Recent Application in this class:
#1
20250290630
2025-09-18

JOINT SEAL SYSTEM & METHOD

#2
20250216073
2025-07-03

Joint Seal System & Method

#3
20240288163
2024-08-29

Joint Seal System & Method

#4
20230194084
2023-06-22

Joint seal system and method

#5
20220298953
2022-09-22

Device for safely re-directing carbon monoxide exhaust from generators

#6
20220178537
2022-06-09

Joint Seal System & Method

#7
20220034507
2022-02-03

Apparatus, methods, and systems for providing a modular tubular exhaust

#8
20200378598
2020-12-03

CROSS COMPATIBLE ADAPTER FOR CHIMNEY SECTIONS WITH COMMON OUTER DIAMETERS

#9
20200370749
2020-11-26

Cross compatible adapter for chimney sections with different outer diameters

#10
20200362998
2020-11-19

Joint Seal System & Method

#11
20190170350
2019-06-06

Joint seal system and method

#12
20190017701
2019-01-17

Piping connection unit, air supply or exhaust tube, and combustion apparatus

#13
20190011126
2019-01-10

Apparatus and method for progressive reduction of flue gas

#14
20180245718
2018-08-30

Flexible chimney hose liner

#15
20180195720
2018-07-12

Air supply and exhaust adapter for combustion apparatus

#16
20170130960
2017-05-11

Exhaust adapter, exhaust structure for water heater, and method for installing exhaust adapter

#17
20170074436
2017-03-16

Joint seal system and method

#18
20160003475
2016-01-07

Adapter for a flue gas outlet

#19
20150369481
2015-12-24

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

#20
20150354733
2015-12-10

Flexible chimney hose liner

#21
20150061284
2015-03-05

Expansion joint spring clip

#22
20150056903
2015-02-26

Exhaust adapter, exhaust structure for water heater, and method for installing exhaust adapter

#23
20130200612
2013-08-08

Compensator for connecting pipes for dust-laden flue gas

#24
20130139696
2013-06-06

Multi-directional outlet transition and hood

#25
20130130606
2013-05-23

SWIVEL CONNECTOR FOR CHIMNEY SHIELD AND METHOD OF MAKING THE SAME

#26
20120138044
2012-06-07

GAS VENT PIPE AND LOCKING SYSTEM

#27
20110193341
2011-08-11

Securing device of a fluid line connection

#28
20100178860
2010-07-15

Positive pressure pipe coupling

#29
20100163017
2010-07-01

STOVES

#30
20100104989
2010-04-29

BURNER ARRANGEMENT

#31
20100007139
2010-01-14

COUPLER FOR CONNECTING METAL AND PLASTIC PIPES

#32
20090253359
2009-10-08

Tent chimney and mounted stove

#33
20090191802
2009-07-30

Chimney duct

#34
20080072892
2008-03-27

CATCH FOR CONDENSATES

#35
20080007055
2008-01-10

Supply and exhaust pipe

#36
20070257487
2007-11-08

Exhaust system interlocking mechanism

#37
20070256682
2007-11-08

Gasket-less vent pipe coupling

#38
20070221195
2007-09-27

Coupling for direct venting system

#39
20070084036
2007-04-19

END-WISE CONNECTION OF SECOND CHIMNEY COMPONENTS AND METHOD THEREFOR

#40
20070057509
2007-03-15

Vent lock

#41
20060249142
2006-11-09

Pipe coupling for a venting system

#42
20050155209
2005-07-21

Positive pipe interlock

#43
20050153647
2005-07-14

Flues for industrial chimneys

#44
20050029805
2005-02-10

End-wise connection of second chimney components and method therefor