ClassID:

157011

F23L9/02 - CPC Classification

Classification description:

Passages or apertures for delivering secondary air for completing combustion of fuel  by discharging the air above the fire

Recent Application in this class:
#1
20250383148
2025-12-18

BURNER APPARATUS

#2
20250320997
2025-10-16

HVAC BURNER ASSEMBLY AND A METHOD THEREOF

#3
20250297736
2025-09-25

TUBULAR SUPPLY DEVICE, A HEAT GENERATING PLANT AND A METHOD

#4
20250052420
2025-02-13

BURNER AND COMBUSTION FURNACE

#5
20250052419
2025-02-13

BURNER AND COMBUSTION FURNACE

#6
20240353098
2024-10-24

GAS-FIRED BURNER, IN PARTICULAR FOR A DRYING DRUM OF AN ASPHALT MIXING PLANT

#7
20240288156
2024-08-29

NON-GAS FIRE PIT

#8
20240247808
2024-07-25

BIOMASS STOVE WITH WARMED SECONDARY COMBUSTION AIR

#9
20240175606
2024-05-30

FURNACE

#10
20230258334
2023-08-17

Non-Complex, Naturally Aspirated, Increased Efficiency, Reduced Smoke, Reduced Creosote Combustion Chamber Utilizing Wood, Wood Products, and/or other solid Organic Materials as Fuel.

#11
20230258329
2023-08-17

BIOMASS BURNER AND CORRESPONDING BIOMASS COMBUSTION METHOD

#12
20230047390
2023-02-16

Atmosphere-adjustable multi-staged swirl ammonia burner

#13
20220373178
2022-11-24

COMBUSTION CHAMBER AND GAS APPARATUS

#14
20220228742
2022-07-21

INCINERATION PLANT FOR SOLID MATERIAL AND METHOD FOR REPLACING ITS NOZZLE INSERT

#15
20210063019
2021-03-04

Forced primary and forced secondary air biomass internal combustion top-lid updraft cook stove

#16
20210048188
2021-02-18

Non-gas fire pit

#17
20200309415
2020-10-01

Furnace

#18
20200271311
2020-08-27

Dynamic heat release calculation for improved feedback control of solid-fuel-based combustion processes

#19
20190323705
2019-10-24

Over fire arrangement and method

#20
20190316772
2019-10-17

Portable combustion/pyrolization system with first and second air sources

#21
20190162403
2019-05-30

Solid fuel burner

#22
20190078775
2019-03-14

Combustor for various types of solid fuels

#23
20190063745
2019-02-28

COMBUSTION PLANT AND METHOD FOR OPERATING A COMBUSTION PLANT

#24
20190049122
2019-02-14

Furnace

#25
20180306439
2018-10-25

Hybrid combustion apparatus using pyrolysis of water and combustion air

#26
20180306435
2018-10-25

COMBUSTOR

#27
20180094806
2018-04-05

Evaporation type burner

#28
20180058724
2018-03-01

Furnace

#29
20180058687
2018-03-01

Overfire air system for low nitrogen oxide tangentially fired boiler

#30
20170254535
2017-09-07

Apparatus and method for improving campfire heat distribution and airflow

#31
20170146245
2017-05-25

FIRE GRATE FOR ENHANCED COMBUSTION WITH VERTICAL AND HORIZONTAL EXPANSION SLEEVES

#32
20160146463
2016-05-26

Combustion device

#33
20150267916
2015-09-24

Fossil-fuel power generation system assisted by waste incineration

#34
20150040885
2015-02-12

Mobile heating device operated with liquid fuel

#35
20140308620
2014-10-16

Pulverized coal fired boiler with wall-attachment secondary air and grid overfire air

#36
20140234787
2014-08-21

Mixed fuel vacuum burner-reactor

#37
20140212825
2014-07-31

Oxy-combustion coupled firing and recirculation system

#38
20140196637
2014-07-17

Combustion system

#39
20130305968
2013-11-21

Burner device for high-temperature air combustion

#40
20130276681
2013-10-24

Burner

#41
20120244479
2012-09-27

Combustion System Using Recycled Flue Gas to Boost Overfire Air

#42
20120174838
2012-07-12

Combustion Apparatus

#43
20120148961
2012-06-14

Method and arrangement for optimising combustion conditions in a fluidised-bed boiler

#44
20110239916
2011-10-06

DEVICE FOR GENERATING AND TRANSMITTING HEAT CAPABLE OF OPERATING WITH FUEL IN ANY PHYSICAL STATE AND COMBUSTION FLAME

#45
20110117505
2011-05-19

Tertiary air addition to solid waste-fired furnaces for NOx control

#46
20110100272
2011-05-05

Vortex incinerator

#47
20110005511
2011-01-13

Fire grate for enhanced combustion with vertical and horizontal expansion sleeves

#48
20100236501
2010-09-23

REHEAT BOILER AND GAS TEMPERATURE CONTROLLING METHOD OF REHEAT BOILER

#49
20100212556
2010-08-26

Systems for staged combustion of air and fuel

#50
20100203461
2010-08-12

COMBUSTION SYSTEMS AND PROCESSES FOR BURNING FOSSIL FUEL WITH REDUCED EMISSIONS

#51
20100143852
2010-06-10

Regulating overfire air in a boiler using an overfire air tube damper

#52
20100101557
2010-04-29

Cooking top

#53
20100083883
2010-04-08

Solid Fuel Boiler Assembly

#54
20100031858
2010-02-11

Pulverized Coal Boiler

#55
20090272302
2009-11-05

Apparatus for combustion of biofuels

#56
20090260582
2009-10-22

Boiler furnace to avoid thermal NOx

#57
20090145344
2009-06-11

Boiler producing steam from flue gases under optimized conditions

#58
20090087805
2009-04-02

In-Furnace Gas Injection Port

#59
20090084346
2009-04-02

GAS FLOW INJECTOR AND METHOD OF INJECTING GAS INTO A COMBUSTION SYSTEM

#60
20090020048
2009-01-22

Method for reducing nitrogen oxide on the primary side in a two-stage combustion process

#61
20080289617
2008-11-27

Gas heating appliance

#62
20080283039
2008-11-20

Overfire air tube damper for boiler and method for regulating overfire air

#63
20080282948
2008-11-20

Boiler and Method for Operating a Boiler

#64
20080236459
2008-10-02

Recovery boiler combustion air system with intermediate air ports vertically aligned with multiple levels of tertiary air ports

#65
20080223265
2008-09-18

Secondary air flow biasing apparatus and method for circulating fluidized bed boiler systems

#66
20080149010
2008-06-26

TERTIARY AIR ADDITION TO SOLID WASTE-FIRED FURNACES FOR NOX CONTROL

#67
20080041357
2008-02-21

Combustion apparatus for solid fuel

#68
20070272226
2007-11-29

Afterburner Device for Fireplaces

#69
20070215023
2007-09-20

Method and apparatus for a simplified primary air system for improving fluid flow and gas mixing in recovery boilers

#70
20070186828
2007-08-16

Boiler furnace that avoids thermal NOx

#71
20070145032
2007-06-28

Cooking appliance

#72
20070089733
2007-04-26

Wood-burning boiler

#73
20070062424
2007-03-22

Apparatus and Method for Enhancing Heat and Mass Transfer

#74
20060199126
2006-09-07

Gas phase thermal unit

#75
20060140825
2006-06-29

Apparatus and method for optimizing exhaust gas burn out in combustion plants

#76
20050166867
2005-08-04

Re-oriented over fire air ports for reduction of NO production from pulverized coal-fired burners

#77
20050056195
2005-03-17

Method and apparatus for improving combustion in recovery boilers