ClassID:

162095

F28F1/36 - CPC Classification

Classification description:

Tubular elements; Assemblies of tubular elements; Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely the means being helically wound fins or wire spirals

Recent Application in this class:
#1
20250257908
2025-08-14

HEAT UTILIZATION SYSTEM AND HEAT GENERATING DEVICE

#2
20250164190
2025-05-22

THERMAL CAPACITY OF ELLIPTICALLY FINNED HEAT EXCHANGER

#3
20250146767
2025-05-08

HEAT EXCHANGER WITH HELICAL BAFFLES

#4
20240102739
2024-03-28

THERMAL CAPACITY OF ELLIPTICALLY FINNED HEAT EXCHANGER

#5
20240035718
2024-02-01

Enhanced tube for direct expansion evaporators

#6
20230400264
2023-12-14

Metal heat exchanger tube

#7
20230392871
2023-12-07

TUBE BUNDLE HEAT EXCHANGER

#8
20230358484
2023-11-09

FLUID COOLERS, HEAT EXCHANGERS, SEAL ASSEMBLIES AND SYSTEMS INCLUDING FLUID COOLERS OR HEAT EXCHANGERS AND RELATED METHODS

#9
20230341193
2023-10-26

Metal heat exchanger tube

#10
20230013985
2023-01-19

Eddy fluid heat exchange device

#11
20220364800
2022-11-17

Asymmetric flow path topology

#12
20220357113
2022-11-10

HEAT TRANSFER EQUIPMENT

#13
20220316824
2022-10-06

FINNED TUBE AND METHOD OF MANUFACTURING THE SAME

#14
20220307775
2022-09-29

Heat exchanger and manufacturing method thereof

#15
20220168844
2022-06-02

METHOD AND APPARATUS FOR MANUFACTURING FINNED TUBES

#16
20220146214
2022-05-12

Heat Transfer Tube

#17
20220132867
2022-05-05

Hood with condenser for commercial oven, particularly combination steam-convection oven

#18
20220026113
2022-01-27

Heat utilization system and heat generating device

#19
20210231378
2021-07-29

Radial configuration for heat exchanger core

#20
20210180870
2021-06-17

HEAT EXCHANGER COMPONENT WITH VARYING TWIST ANGLE

#21
20210146419
2021-05-20

METHOD AND APPARATUS FOR MAKING FIN TUBE

#22
20210080195
2021-03-18

Asymmetric flow path topology

#23
20210041184
2021-02-11

Fluid coolers, heat exchangers, seal assemblies and systems including fluid coolers or heat exchangers and related methods

#24
20210033351
2021-02-04

SHELL AND TUBE HEAT EXCHANGER, FINNED TUBES FOR SUCH HEAT EXCHANGER AND CORRESPONDING METHOD

#25
20210008492
2021-01-14

Drying and filtering device

#26
20200395159
2020-12-17

Flow-guiding rod, bushing and converter transformer system

#27
20200300548
2020-09-24

EVAPORATIVE HEAT EXCHANGE APPARATUS WITH FINNED ELLIPTICAL TUBE COIL ASSEMBLY

#28
20200248972
2020-08-06

Hygienic heat exchanger

#29
20200132377
2020-04-30

THERMAL CAPACITY OF ELLIPTICALLY FINNED HEAT EXCHANGER

#30
20190353428
2019-11-21

ANNULAR HEAT EXCHANGER

#31
20190346213
2019-11-14

Heat transfer surface

#32
20190145718
2019-05-16

Heat exchanger tube

#33
20190145717
2019-05-16

Heat exchanger tube

#34
20190137192
2019-05-09

Heat recovery apparatus and method

#35
20190128622
2019-05-02

Heat transfer tube and cracking furnace using the same

#36
20190120567
2019-04-25

Heat exchanger tube

#37
20190120560
2019-04-25

Counter flow heat exchanger

#38
20190106636
2019-04-11

Cooler for carbon-based feedstock processing system

#39
20190100079
2019-04-04

Internal heat exchanger double-tube structure of air conditioning system having alternative refrigerant applied thereto

#40
20190086083
2019-03-21

Duct assembly including helicoidal structure and gas turbine combustor including the same

#41
20190039115
2019-02-07

Device and method for forming inside three-dimensional finned tube by multi-edge ploughing and extruding

#42
20190033010
2019-01-31

Condenser tubes with additional flank structure

#43
20190017746
2019-01-17

Spiral finned condenser

#44
20190011190
2019-01-10

Counterflow helical heat exchanger

#45
20190011189
2019-01-10

Counterflow helical heat exchanger

#46
20180372427
2018-12-27

SHELL AND TUBE HEAT EXCHANGER, FINNED TUBES FOR SUCH HEAT EXCHANGER AND CORRESPONDING METHOD

#47
20180345353
2018-12-06

3D printed heat exchanger

#48
20180320976
2018-11-08

INTEGRAL HEAT EXCHANGER

#49
20180187983
2018-07-05

Heat transfer surface

#50
20180172361
2018-06-21

HEAT EXCHANGER

#51
20180106551
2018-04-19

Heat Exchanger for a Device that Produces Combustible Product Gas from Carbon-Containing Input Materials

#52
20180100614
2018-04-12

Cable

#53
20180100108
2018-04-12

Gas conditioning process and system for extracting a condensable vapour from a supplied gas

#54
20180080582
2018-03-22

Double-walled pipe

#55
20180045467
2018-02-15

Double pipe heat exchanger and method of manufacturing the same

#56
20180003443
2018-01-04

EVAPORATIVE HEAT EXCHANGE APPARATUS WITH FINNED ELLIPTICAL TUBE COIL ASSEMBLY

#57
20170307300
2017-10-26

RE-DIRECTION OF VAPOR FLOW ACROSS TUBULAR CONDENSERS

#58
20170299280
2017-10-19

Tri-piece thermal energy body heat exchanger having multi-layer pipeline and transferring heat to exterior through outer periphery of pipeline

#59
20170198973
2017-07-13

Thermal capacity of elliptically finned heat exchanger

#60
20170131039
2017-05-11

Mixed louver spiral fin

#61
20170122666
2017-05-04

INTEGRAL HEAT EXCHANGER

#62
20170108289
2017-04-20

HEAT EXCHANGER AND A METHOD FOR FORMING A HEAT EXCHANGER

#63
20170108279
2017-04-20

Heat exchanger with multiple flow tubes for fluid circulation

#64
20170074600
2017-03-16

Spiral louver shaped condenser with multilayer spatial structure

#65
20170051955
2017-02-23

Cooling system with pressure control

#66
20170045275
2017-02-16

Heat exchanger

#67
20170038158
2017-02-09

HEAT EXCHANGER AND A SYSTEM FOR RECOVERY OF THERMAL ENERGY FROM WASTE WATER

#68
20170016677
2017-01-19

Heat exchanger and method for manufacturing same

#69
20160341456
2016-11-24

EVAPORATOR AND A METHOD FOR FORMING AN EVAPORATOR

#70
20160305717
2016-10-20

Metal heat exchanger tube

#71
20160298910
2016-10-13

THERMAL ENERGY STORAGE DEVICE

#72
20160273840
2016-09-22

TUBE HEAT EXCHANGER WITH OPTIMIZED THERMO-HYDRAULIC CHARACTERISTICS

#73
20160215219
2016-07-28

Cooler for carbon-based feedstock processing system

#74
20160131040
2016-05-12

Heat exchanger having a coaxial or concentric tube construction

#75
20160116222
2016-04-28

Heat exchanger with interconnected fluid transfer members

#76
20160069619
2016-03-10

Hygienic heat exchanger

#77
20150300745
2015-10-22

COUNTERFLOW HELICAL HEAT EXCHANGER

#78
20150292814
2015-10-15

EVAPORATOR AND A METHOD FOR FORMING AN EVAPORATOR

#79
20150136361
2015-05-21

Heat transfer using flexible fluid conduit

#80
20150114610
2015-04-30

Ammonia heat exchanger unit and system

#81
20150114609
2015-04-30

Heat transfer tube and cracking furnace using the same

#82
20150007964
2015-01-08

Re-direction of vapor flow across tubular condensers

#83
20140284036
2014-09-25

Condenser tubes with additional flank structure

#84
20140245768
2014-09-04

Co-fired absorption system generator

#85
20140245717
2014-09-04

Device for heating a fluid

#86
20140224464
2014-08-14

ENHANCED CONDENSATION HEAT-TRANSFER TUBE

#87
20140165558
2014-06-19

Heat exchanger

#88
20140124181
2014-05-08

Coil tube heat exchanger for a tankless hot water system

#89
20140124180
2014-05-08

Coil tube heat exchanger for a tankless hot water system

#90
20140083667
2014-03-27

Tri-piece thermal energy body heat exchanger having multi-layer pipeline and transferring heat to exterior through outer periphery of pipeline

#91
20140076293
2014-03-20

Heat exchanger

#92
20140076292
2014-03-20

Heat exchanger

#93
20140020867
2014-01-23

Thermal transfer device with spiral fluid pathways

#94
20130206379
2013-08-15

Air conditioner

#95
20130199761
2013-08-08

Heat-exchange apparatus for insertion into a storage tank, and mounting components therefor

#96
20130075064
2013-03-28

Heat Exchanger

#97
20120325443
2012-12-27

Tube Type Heat Exchanger and Manufacturing Method of the Same

#98
20120305227
2012-12-06

FIN AND TUBE HEAT EXCHANGER

#99
20120247734
2012-10-04

Elongated counter-flow heat exchanger for heat recovery

#100
20120211210
2012-08-23

COAXIAL-FLOW HEAT TRANSFER STRUCTURE

#101
20120160465
2012-06-28

HEAT EXCHANGER

#102
20120159945
2012-06-28

Stirling engine

#103
20120159944
2012-06-28

Stirling engine and method of removing impurities in a heat-transfer tube group in a power device or a power-generating device which uses a stirling engine

#104
20120111552
2012-05-10

FINNED TUBE HEAT EXCHANGER

#105
20120111551
2012-05-10

Finned tube for evaporation and condensation

#106
20120097380
2012-04-26

HEAT EXCHANGER

#107
20120047940
2012-03-01

LOW CHARGE HEAT EXCHANGER IN A SEALED REFRIGERATION SYSTEM

#108
20120012292
2012-01-19

EVAPORATIVE HEAT EXCHANGE APPARATUS WITH FINNED ELLIPTICAL TUBE COIL ASSEMBLY

#109
20110272123
2011-11-10

Spiral heat exchanger for hydrodesulfurizer feedstock

#110
20110139416
2011-06-16

Internal Heat Exchanger for Air Conditioning System of Motor Vehicle and Such a Circuit

#111
20110138849
2011-06-16

Cooling Device

#112
20110132590
2011-06-09

HELICALLY WOUND FINNED TUBES FOR HEAT EXCHANGERS AND IMPROVED METHOD FOR SECURING FINS AT THE ENDS OF THE TUBES

#113
20110108238
2011-05-12

High-efficiency enhanced boiler

#114
20110100593
2011-05-05

Hybrid heat exchange apparatus

#115
20110056663
2011-03-10

Shell-and-Tube Heat Exchanger

#116
20110041781
2011-02-24

Coil tube heat exchanger for a tankless hot water system

#117
20110027145
2011-02-03

Gasket, reactor using the same for spiral sealing and manufacturing method thereof

#118
20110000650
2011-01-06

INDIRECT HEAT EXCHANGE DEVICE AND METHOD OF EXCHANGING HEAT

#119
20100319378
2010-12-23

Hot-water storage type hot-water supply device and hot-water storage type heating and hot-water supply device

#120
20100314092
2010-12-16

HEAT TRANSFER TUBE

#121
20100288480
2010-11-18

Metallic heat exchanger tube

#122
20100282587
2010-11-11

Apparatus and method for pyrolysis of organic waste

#123
20100282456
2010-11-11

FINNED TUBE HEAT EXCHANGER

#124
20100276122
2010-11-04

Re-direction of vapor flow across tubular condensers

#125
20100270013
2010-10-28

TURN-FIN TUBE, MANUFACTURING APPARATUS OF THE TURN-FIN TUBE, MANUFACTURING METHOD OF THE TURN-FIN TUBE AND TURN-FIN TYPE HEAT EXCHANGER USING THE TURN-FIN TUBE

#126
20100258264
2010-10-14

THERMAL TRANSFER APPARATUS, SYSTEM AND METHOD

#127
20100218533
2010-09-02

Air conditioner with internally grooved heat exchanger tubes optimized for an indoor heat exchanger and an outdoor heat exchanger

#128
20100101089
2010-04-29

Handling spine fin coils, winders, reels, shapers and/or processing spine fin and transition tube splicing and rework

#129
20090314481
2009-12-24

HEAT EXCHANGER WITH COOLING FINS

#130
20090308051
2009-12-17

HEAT EXCHANGER TUBE AND AIR-TO-AIR INTERCOOLER

#131
20090266531
2009-10-29

Heat Sink and Method of Manufacturing the Same

#132
20090260792
2009-10-22

Tube with fins having wings

#133
20090260784
2009-10-22

Heat Exchanger and Method of Forming a Heat Exchanger

#134
20090250200
2009-10-08

Coaxial-flow heat transfer structures for use in diverse applications

#135
20090242184
2009-10-01

Spiral Tube Fin Heat Exchanger

#136
20090229807
2009-09-17

Evaporator tube with optimized undercuts on the groove base

#137
20090229806
2009-09-17

Enhanced heat transfer tube and manufacture method thereof

#138
20090166019
2009-07-02

Double-wall-tube heat exchanger

#139
20090159248
2009-06-25

Heat exchanger, heat exchanger tube and methods of making and using same

#140
20090008069
2009-01-08

FINNED TUBE WITH STEPPED PEAKS

#141
20080236803
2008-10-02

FINNED TUBE WITH INDENTATIONS

#142
20080235950
2008-10-02

CONDENSING TUBE WITH CORRUGATED FINS

#143
20080209933
2008-09-04

System for exchanging heat within an environment using a coaxial-flow heat exchanging structure with helically-finned tubing

#144
20080209899
2008-09-04

Exhaust gas treating method

#145
20080196876
2008-08-21

Finned tube for condensation and evaporation

#146
20080164016
2008-07-10

Condenser of refrigerator

#147
20080023180
2008-01-31

Air cooled heat exchanger with enhanced heat transfer coefficient fins

#148
20080000620
2008-01-03

Heat exchanger

#149
20070131396
2007-06-14

Condensing heat-exchange copper tube for an flooded type electrical refrigeration unit

#150
20070119576
2007-05-31

Heat exchanger with modified tube surface feature

#151
20070051506
2007-03-08

TURN FIN CONDENSER

#152
20070017243
2007-01-25

Coaxial-flow heat transfer structures for use in diverse applications

#153
20060201180
2006-09-14

Coaxial-flow heat transfer system employing a coaxial-flow heat transfer structure having a helically-arranged fin structure disposed along an outer flow channel for constantly rotating an aqueous-based heat transfer fluid flowing therewithin so as to improve heat transfer with geological environments

#154
20060201179
2006-09-14

Coaxial-flow heat transfer system employing a coaxial-flow heat transfer structure having a helically-arranged fin structure disposed along an outer flow channel for constantly rotating an aqueous-based heat transfer fluid flowing therewithin so as to improve heat transfer with geological environments

#155
20060162342
2006-07-27

Thermoelectric heat transfer system

#156
20060081364
2006-04-20

External ribbed furnace tubes

#157
20060081362
2006-04-20

Finned tubular heat exchanger

#158
20060026835
2006-02-09

Heat exchanger fins and method for fabricating fins particularly suitable for stirling engines

#159
20060008394
2006-01-12

Exhaust gas treating apparatus

#160
20050269069
2005-12-08

Heat transfer apparatus with enhanced micro-channel heat transfer tubing

#161
20050150640
2005-07-14

Double-tube apparatus for use in a heat exchanger and method of using the same

#162
20050133202
2005-06-23

Heat exchanger, combination with heat exchanger and method of manufacturing the heat exchanger

#163
20050082051
2005-04-21

Heat conduction pipe externally covered with fin member

#164
20050005432
2005-01-13

Finned tube with vortex generators for a heat exchanger