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blasting (80757) 80757
heating (80757) 80757
lighting (80757) 80757
mechanical engineering (80757) 80757
weapons (80757) 80757
combustion apparatus (80562) 80562
combustion processes (80562) 80562
air supply (80558) 80558
draught-inducing (80558) 80558
supplying non-combustible liquid or gas (80558) 80558
general tagging of cross-sectional technologies spanning over several sections of the ipc (27384) 27384
general tagging of new technological developments (27384) 27384
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (27384) 27384
technologies or applications for mitigation or adaptation againstclimate change (26245) 26245
reduction of greenhouse gas [ghg] emissions, related to energygeneration, transmission or distribution (24457) 24457
air (14972) 14972
methodsor apparatus for combustion using fluid fuelor solid fuel suspended in (14971) 14971
flues (13433) 13433
removal or treatment of combustion products or combustionresidues (13433) 13433
burners (13160) 13160
consuming waste products by combustion (11683) 11683
cremation furnaces (11683) 11683
ranges (11069) 11069
ventilating (11069) 11069
chemistry (7142) 7142
metallurgy (7142) 7142
performing operations (6808) 6808
transporting (6808) 6808
fluid heaters, e.g. water or air heaters, having heatgenerating means, in general (6121) 6121
regulating or controlling combustion (5901) 5901
methods or apparatus for combustion using only solid fuel (5559) 5559
physical or chemical processes or apparatus in general (4775) 4775
heat exchange in general (4632) 4632
furnaces (4267) 4267
kilns (4267) 4267
ovens (4267) 4267
retorts (4267) 4267
casings, linings, walls or doors specially adapted forcombustion chambers, e.g. firebridges (4216) 4216
details of combustion chambers, not otherwise providedfor (4216) 4216
devices for deflecting air, flames or combustion products incombustion chambers (4216) 4216
safety arrangements specially adapted for combustionapparatus (4216) 4216
steam generation (3978) 3978
separation (3685) 3685
heat-exchange apparatus, not provided for in another subclass,in which the heat-exchange media do not come into direct contact (3534) 3534
feeding fuel to combustion apparatus (3478) 3478
methods of steam generation (3403) 3403
steam boilers (3403) 3403
combustion engines (3368) 3368
hot-gas or combustion-product engine plants (3368) 3368
details or accessories of furnaces, kilns, ovens, or retorts,in so far as they are of kinds occurring in more than one kindof furnace (3334) 3334
climate change mitigation technologies in the production orprocessing of goods (3253) 3253
engine plants in general (2417) 2417
machines or engines in general (2417) 2417
steam engines (2417) 2417
domestic stoves or ranges for solid fuels (2307) 2307
technical subjects covered by former uspc (2138) 2138
furnaces, kilns, ovens, or retorts in general (2116) 2116
open sintering or like apparatus (2116) 2116
air intakes for jet-propulsion plants (2111) 2111
controlling fuel supply in air-breathing jet-propulsion plants (2111) 2111
gas-turbine plants (2111) 2111
generating combustion products of high pressure or highvelocity, e.g. gas-turbine combustion chambers (1962) 1962
fuels (1957) 1957
lubricants (1957) 1957
peat (1957) 1957
petroleum, gas or coke industries (1957) 1957
technical gases containing carbon monoxide (1957) 1957
engineering elements and units (1915) 1915
general measures for producing and maintaining effectivefunctioning of machines or installations (1915) 1915
thermal insulation in general (1915) 1915
details of heat-exchange and heat-transfer apparatus, ofgeneral application (1780) 1780
cleaning or raking grates (1653) 1653
grates (1653) 1653
details of domestic stoves or ranges, of general application (1588) 1588
other domestic stoves or ranges (1588) 1588
engine plants not otherwise provided for (1549) 1549
engines using special working fluids or cycles (1549) 1549
steam accumulators (1549) 1549
steam engine plants (1549) 1549
inorganic chemistry (1526) 1526
air-conditioning, air-humidification, ventilation, use of aircurrents for screening (1524) 1524
compounds thereof (1487) 1487
non-metallic elements (1467) 1467
glass (1463) 1463
mineral or slag wool (1463) 1463
manufacture, shaping, or supplementary processes (1462) 1462
metallurgy of iron (1352) 1352
chemical or physical processes, e.g. catalysis or colloidchemistry (1210) 1210
their relevant apparatus (1210) 1210
actuating-floats (1164) 1164
cocks (1164) 1164
devices for venting or aerating (1164) 1164
taps (1164) 1164
valves (1164) 1164
technical subjects covered by former us classification (1147) 1147
technical subjects covered by former uspc cross-reference artcollections [xracs] and digests (1033) 1033
fixed constructions (970) 970
carburetting air or other gases (966) 966
production of producer gas, water-gas, synthesis gas fromsolid carbonaceous material, or mixtures containing these gases (966) 966
climate change mitigation technologies related to buildings,e.g. housing, house appliances or related end-userapplications (943) 943
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Chinese (11264) 11264
German (9868) 9868
Korean (2062) 2062
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Russian (1303) 1303
Spanish (1167) 1167
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Finnish (728) 728
Italian (723) 723
Portuguese (574) 574
Polish (467) 467
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Dutch (323) 323
Czech (194) 194
Ukrainian (102) 102
Hungarian (71) 71
Turkish (62) 62
Romanian (46) 46
Slovenian (35) 35
Greek (29) 29
Lithuanian (29) 29
Indonesian (26) 26
Slovak (25) 25
Serbian (21) 21
Bulgarian (16) 16
Croatian (14) 14
Estonian (13) 13
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12/2019
A gas flare for burning waste gas comprises a stack with an upper chimney space, a lower combustion chamber, and a burner having one or more flame outlets positioned in the combustion chamber... 
MECHANICAL ENGINEERING | SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS | WEAPONS | BLASTING | AIR SUPPLY | DRAUGHT-INDUCING | COMBUSTION PROCESSES | CREMATION FURNACES | CONSUMING WASTE PRODUCTS BY COMBUSTION | HEATING | LIGHTING | COMBUSTION APPARATUS
Patent
12/2019
A gas flare for burning waste gas comprises a stack with an upper chimney space, a lower combustion chamber, and a burner having one or more flame outlets positioned in the combustion chamber... 
MECHANICAL ENGINEERING | SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS | WEAPONS | BLASTING | AIR SUPPLY | COMBUSTION PROCESSES | CREMATION FURNACES | CONSUMING WASTE PRODUCTS BY COMBUSTION | HEATING | LIGHTING | COMBUSTION APPARATUS | DRAUGHT-INDUCING | BURNERS
Patent
01/2020
Sistema de combustion liquida de gas GLP en un motor, la estrategia se basa en mantener el gas GLP en estado liquido al momento de inyectarse dentro de un motor... 
MECHANICAL ENGINEERING | SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS | WEAPONS | BLASTING | AIR SUPPLY | DRAUGHT-INDUCING | COMBUSTION PROCESSES | HEATING | LIGHTING | COMBUSTION APPARATUS
Patent
12/2019
A gas boiler intake system (1) includes an air intake (2), a gas intake (3) and a Venturi (4). The air intake (2) is arranged adjacent to the gas intake... 
MECHANICAL ENGINEERING | SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS | WEAPONS | BLASTING | AIR SUPPLY | DRAUGHT-INDUCING | COMBUSTION PROCESSES | HEATING | BURNERS | LIGHTING | COMBUSTION APPARATUS
Patent
08/2019
The present invention relates to a connecting structure for controlling a blade used in a damper of an exhaust gas desulfurizer... 
MECHANICAL ENGINEERING | SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS | WEAPONS | BLASTING | AIR SUPPLY | DRAUGHT-INDUCING | COMBUSTION PROCESSES | HEATING | LIGHTING | COMBUSTION APPARATUS
Patent
09/2018
The present invention provides a gas preheating apparatus capable of increasing heat efficiency of an air preheater... 
MECHANICAL ENGINEERING | SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS | WEAPONS | BLASTING | AIR SUPPLY | DRAUGHT-INDUCING | COMBUSTION PROCESSES | HEATING | LIGHTING | COMBUSTION APPARATUS
Patent
03/2020
A fire an inner chamber wall circumscribing and defining an inner chamber. A plurality of primary air apertures defined through the inner chamber wall at a... 
MECHANICAL ENGINEERING | SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS | WEAPONS | BLASTING | AIR SUPPLY | COMBUSTION PROCESSES | HEATING | LIGHTING | DOMESTIC STOVES OR RANGES FOR SOLID FUELS | COMBUSTION APPARATUS | RANGES | METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL | DRAUGHT-INDUCING | VENTILATING
Patent
04/2020
Thermochemical regeneration is enhanced by injecting fuel gas to entrain recycled flue gas that passes out of a regenerator to form a mixture that is impelled into the other regenerator. La... 
MECHANICAL ENGINEERING | SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS | WEAPONS | BLASTING | AIR SUPPLY | COMBUSTION PROCESSES | HEATING | LIGHTING | COMBUSTION APPARATUS | GLASS | METALLURGY | DRAUGHT-INDUCING | MINERAL OR SLAG WOOL | CHEMISTRY | MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
Patent
04/2020
Systems and methods for controlling an exhaust gas fan system. The control system may control one or more components of the exhaust system to optimize system performance and improve energy efficiency... 
MECHANICAL ENGINEERING | SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS | WEAPONS | BLASTING | AIR SUPPLY | COMBUSTION PROCESSES | HEATING | LIGHTING | COMBUSTION APPARATUS | RANGES | DRAUGHT-INDUCING | VENTILATING | AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING
Patent
04/2020
A special distribution of nozzles in the flue gas outlet and their alignment make it possible to guide the flue gas along a wavy line... 
MECHANICAL ENGINEERING | SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS | WEAPONS | BLASTING | AIR SUPPLY | DRAUGHT-INDUCING | COMBUSTION PROCESSES | HEATING | LIGHTING | COMBUSTION APPARATUS
Patent
04/2020
The invention relates to a safety terminal element (1) for facilitating the unidirectional flow of a medium, particularly for discharging flue gases and for preventing flue gas backdrafting... 
MECHANICAL ENGINEERING | SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS | WEAPONS | BLASTING | AIR SUPPLY | DRAUGHT-INDUCING | COMBUSTION PROCESSES | HEATING | LIGHTING | COMBUSTION APPARATUS
Patent
01/2020
A compensations duct assembly [100] is described that provides a gas tight connection between a backpass of a furnace and an air preheater pipe [10... 
MECHANICAL ENGINEERING | SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS | WEAPONS | BLASTING | AIR SUPPLY | DRAUGHT-INDUCING | FLUES | COMBUSTION PROCESSES | HEATING | LIGHTING | COMBUSTION APPARATUS | REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTIONRESIDUES
Patent
02/2020
A combustion system is capable of using a petroleum pitch fuel, and is provided with a burner having a fuel supply pipe where a flame stabilizing plate is... 
MECHANICAL ENGINEERING | SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS | WEAPONS | BLASTING | AIR SUPPLY | DRAUGHT-INDUCING | COMBUSTION PROCESSES | HEATING | LIGHTING | COMBUSTION APPARATUS
Patent
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