E04F17/02 - CPC Classification Index

ClassID:

131131 ⎘

E04F17/02 - CPC Classification

Classification description:

Vertical ducts; Channels, e.g. for drainage for carrying away waste gases, e.g. flue gases ; Building elements specially designed therefor, e.g. shaped bricks or sets thereof

Sub-classes:

E04F17/023 » {made of masonry, concrete or other stone-like material; Insulating measures and joints therefor} 1
E04F17/026 » {Exterior cladding, e.g. of chimney parts extending above the roof; Rain covers for chimney tops without draught-inducing aspects } 12

Recent Application in this class:

20260055829

2026-02-26

Wall Thimble Alignment Trim and Wall Thimble Assembly Having an Alignment Trim for a Chimney

20220364356

2022-11-17

SYSTEMS, METHODS AND MACHINE READABLE PROGRAMS FOR MEASURING, RECORDING, AND ACCESSING DATA FOR IMPROVED SELECTION OF CLOTHING

20210071412

2021-03-11

DEVICES AND METHODS TO PROVIDE AIR CIRCULATION SPACE PROXIMATE TO INSULATION MATERIAL

20200255612

2020-08-13

Phenol-furan resin composition

20200011072

2020-01-09

Exhaust gas discharge device for fire engine in fire station

20190376279

2019-12-12

DEVICES AND METHODS TO PROVIDE AIR CIRCULATION TO INSULATION MATERIAL

20190257094

2019-08-22

Building based on large-space structure and freestanding external envelope as well as construction method

20170299204

2017-10-19

Building structure for a multi-story building

20170176002

2017-06-22

Portable chimney system

#10

20150308683

2015-10-29

Device and Method Relating to the Installation of a Liner in a Chimney or Flue

#11

20130160885

2013-06-27

Inflatable device for blocking chimney flues or other ducts

#12

20120039018

2012-02-16

Device for discharging an explosive gas

#13

20110136423

2011-06-09

Large Diameter FRP Flues In Large Diameter Chimneys

#14

20110000154

2011-01-06

Sealing system

#15

20090314376

2009-12-24

MODULAR CONDUIT STRUCTURE AND METHOD OF MAKING SAME

#16

20070298700

2007-12-27

Exhaust gas stack

#17

20070084036

2007-04-19

END-WISE CONNECTION OF SECOND CHIMNEY COMPONENTS AND METHOD THEREFOR

#18

20060123724

2006-06-15

Device and method to provide air circulation space proximate to insulation material

#19

20050029805

2005-02-10

End-wise connection of second chimney components and method therefor