ClassID:

158210

F24F3/147 - CPC Classification

Classification description:

Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification with both heat and humidity transfer between supplied and exhausted air

Recent Application in this class:
#1
20260117994
2026-04-30

ADAPTIVE VENTILATION AND FILTRATION SYSTEM FOR A DUCTED HVAC SYSTEM

#2
20260049726
2026-02-19

AIR CONDITIONING MASS TRANSFER ASSEMBLIES WITH DIRECTED LIQUID DESICCANT FLOW

#3
20250290649
2025-09-18

HUMIDIFIER WITH A WATER MIST SPRAYING UNIT FOR USE WITH A FORCED-AIR HEATING SYSTEM

#4
20250290648
2025-09-18

AIR CIRCULATORY SYSTEM WITH ERV, HEATER, AND AIR CONDITION SYSTEM

#5
20250085005
2025-03-13

LIQUID-TO-AIR MEMBRANE ENERGY EXCHANGER

#6
20250067455
2025-02-27

System and Method for Controlling Ventilation Air of a Target Space

#7
20250012460
2025-01-09

HEAT MODULATION DEHUMIDIFICATION SYSTEM

#8
20240418397
2024-12-19

DUCT SYSTEM FOR HVAC SYSTEM OF AIR-SEALED BUILDING AND METHOD FOR CONDITIONING INTERNAL AIR THEREOF

#9
20240344718
2024-10-17

GAS HUMIDITY REDUCTION APPARATUS AND METHOD OF USING THE SAME

#10
20240328643
2024-10-03

AIR CONDITIONING SYSTEM USING THERMALLY RESPONSIVE LIQUID DESICCANTS

#11
20240219043
2024-07-04

HUMIDITY CONTROL APPARATUS OR ATMOSPHERIC WATER GENERATOR

#12
20240125490
2024-04-18

VENTILATION APPARATUS AND VENTILATION SYSTEM HAVING THE SAME

#13
20240117979
2024-04-11

INTEGRATED VENTILATION AND HEAT RECOVERY TERMINAL

#14
20240117978
2024-04-11

VENTILATOR

#15
20240110712
2024-04-04

Systems and methods for air dehumidification in an enclosed space

#16
20240027083
2024-01-25

DESICCANT ENHANCED EVAPORATIVE COOLING SYSTEMS AND METHODS

#17
20230392872
2023-12-07

LIQUID PANEL ASSEMBLY

#18
20230243526
2023-08-03

Enthalpy exchanger

#19
20230243525
2023-08-03

VAPOR-SELECTIVE NANOSTRUCTURED MEMBRANE HEAT EXCHANGERS FOR COOLING AND DEHUMIDIFICATION

#20
20230204235
2023-06-29

Heat modulation dehumidification system

#21
20230135260
2023-05-04

Air conditioning system

#22
20220390127
2022-12-08

Desiccant coated fan blade

#23
20220381453
2022-12-01

Fresh air conditioning system

#24
20220146215
2022-05-12

TOTAL HEAT EXCHANGING ELEMENT

#25
20220128260
2022-04-28

Cooling system using ejector and membrane

#26
20220113042
2022-04-14

AIR TREATMENT APPARATUS

#27
20220099390
2022-03-31

Systems and methods for a non-pressurized closed loop water sub-system

#28
20220003436
2022-01-06

Liquid-to-air membrane energy exchanger

#29
20220003435
2022-01-06

SYSTEMS AND METHODS FOR AIR DEHUMIDIFICATION IN AN ENCLOSED SPACE

#30
20210402356
2021-12-30

Enthalpy exchanger element, enthalpy exchanger comprising such elements and method for their production

#31
20210389001
2021-12-16

Method using spray ring in an enclosed air flow for purification

#32
20210381702
2021-12-09

Dry room and method for controlling same

#33
20210372644
2021-12-02

Air treatment device configured for cyclone flow and water contact

#34
20210372643
2021-12-02

Method for air treatment in a moving air flow vessel

#35
20210372642
2021-12-02

Air flow vessel and spray ring air purification device

#36
20210372641
2021-12-02

Cyclonic vessel air purification and humidity device

#37
20210332993
2021-10-28

Energy exchange system for conditioning air in an enclosed structure

#38
20210325059
2021-10-21

Air conditioner for paint booth

#39
20210316249
2021-10-14

Membrane device for water and energy exchange

#40
20210231384
2021-07-29

Liquid panel assembly

#41
20210190337
2021-06-24

Heat modulation dehumidification system

#42
20210172623
2021-06-10

INTELLIGENT DEHUMIDIFIER WITH DUAL COIL ENERGY EXCHANGER FOR HORITCULTURE ENVIRONMENT

#43
20210108807
2021-04-15

Enthalpy exchanger

#44
20210071883
2021-03-11

Integrated chilled beam / chiller direct outside air system unit

#45
20210063032
2021-03-04

INTEGRATED CHILLED BEAM / CHILLER DIRECT OUTSIDE AIR SYSTEM UNIT

#46
20210023502
2021-01-28

Humidity control element and method for using the same

#47
20210010759
2021-01-14

ENHANCED-EFFICIENCY ENERGY RECOVERY VENTILATION CORE

#48
20210003297
2021-01-07

GAS HUMIDITY REDUCTION APPARATUS AND METHOD OF USING THE SAME

#49
20200408427
2020-12-31

Hybrid humidity controller and air purifier

#50
20200363141
2020-11-19

Total heat exchange element paper and total heat exchange element

#51
20200326083
2020-10-15

Energy exchange apparatus for sensible and latent heat

#52
20200263895
2020-08-20

Ventilator

#53
20200173672
2020-06-04

Control system and method for a liquid desiccant air delivery system

#54
20200107467
2020-04-02

HVAC-less enclosure with temperature range augmenting recirculation system

#55
20200096241
2020-03-26

Rooftop liquid desiccant systems and methods

#56
20200096212
2020-03-26

Desiccant enhanced evaporative cooling systems and methods

#57
20200086269
2020-03-19

Air purifying system

#58
20200080786
2020-03-12

Evaporative cooling in additive manufactured heat exchangers

#59
20200049428
2020-02-13

FLUID CHANNELS HAVING PERFORMANCE ENHANCEMENT FEATURES AND DEVICES INCORPORATING SAME

#60
20200025410
2020-01-23

Air conditioning apparatus

#61
20200018495
2020-01-16

TEMPERATURE MODULATED DESICCANT EVAPORATIVE COOLER AND INDIRECT AND DIRECT EVAPORATIVE AIR CONDITIONING SYSTEMS, METHODS, AND APPARATUS

#62
20200011549
2020-01-09

ENERGY RECOVERY VENTILATOR WITH SELF-CONTAINED DEHUMIDIFICATION SYSTEM

#63
20200009500
2020-01-09

Membrane device for water and energy exchange

#64
20190338981
2019-11-07

Usage-side air-conditioning apparatus and air-conditioning apparatus provided with same

#65
20190285289
2019-09-19

COUNTER-FLOW ENERGY RECOVERY VENTILATOR (ERV) CORE

#66
20190283065
2019-09-19

Drying facility for painting

#67
20190257538
2019-08-22

Systems and methods for energy recovery of an HVAC system

#68
20190242595
2019-08-08

System, components, and methods for air, heat, and humidity exchanger

#69
20190226694
2019-07-25

Dehumidifying and energy recapture system

#70
20190212020
2019-07-11

LIQUID-TO-AIR MEMBRANE ENERGY EXCHANGER

#71
20190162429
2019-05-30

MEMBRANE HEAT AND MASS EXCHANGER AND METHODS OF MANUFACTURE

#72
20190137137
2019-05-09

RECUPERATOR FOR EXCHANGING ENERGY BETWEEN TWO AIR FLOWS

#73
20190093907
2019-03-28

Blended membranes for water vapor transport and methods for preparing same

#74
20190049187
2019-02-14

Evaporative cooling in additive manufactured heat exchangers

#75
20180363929
2018-12-20

Enthalpy exchanger

#76
20180259203
2018-09-13

Independent temperature and humidity processing air conditioning system driven by low-level thermal energy

#77
20180238567
2018-08-23

METHOD OF MAKING AND USING A MEMBRANE FOR HEAT AND MOISTURE EXCHANGE BETRWEEN GAS STREAMS

#78
20180224152
2018-08-09

Heat pipe air-conditioning apparatus using bypass passage

#79
20180187918
2018-07-05

Three-fluid liquid to air membrane energy exchanger

#80
20180180308
2018-06-28

Harvesting energy from humidity fluctuations

#81
20180180307
2018-06-28

Latent and sensible cooling membrane heat pump

#82
20180156476
2018-06-07

Integrated chilled beam / chiller direct outside air system unit

#83
20180112927
2018-04-26

Exchanger element for passenger compartment and passenger compartment equipped with such an exchanger element

#84
20180087786
2018-03-29

ENERGY MANAGEMENT APPARATUS, SYSTEM AND METHOD

#85
20180087785
2018-03-29

Humidity management device and method

#86
20180045430
2018-02-15

ENERGY RECOVERY ASSEMBLY, ENERGY RECOVERY VENTILATION SYSTEM COMPRISING AN ENERGY RECOVERY ASSEMBLY AND METHOD OF OPERATION FOR SAME

#87
20180045423
2018-02-15

Combined systems for utilization of waste heat

#88
20180015425
2018-01-18

Enthalpy exchanger element, enthalpy exchanger comprising such elements and method for their production

#89
20170370609
2017-12-28

Enthalpy Heat Exchanger

#90
20170370598
2017-12-28

Heat and mass transfer devices with wettable layers for forming falling films

#91
20170363305
2017-12-21

HEAT AND MASS TRANSFER DEVICES WITH WETTABLE LAYERS FOR FORMING FALLING FILMS

#92
20170356661
2017-12-14

Air conditioning with recovery wheel, passive dehumidification wheel, cooling coil, and secondary direct-expansion circuit

#93
20170350655
2017-12-07

Cylindrical air to air heat exchanger

#94
20170284696
2017-10-05

Direct expansion air conditioning system with separate outdoor air latent cooling and return air sensible cooling arrangements

#95
20170248332
2017-08-31

Geothermal Heating, Cooling, and Dehumidification Ventilation System

#96
20170241655
2017-08-24

Liquid panel assembly

#97
20170227300
2017-08-10

Heat exchange element

#98
20170211826
2017-07-27

Enthalpy exchanger including stacked networks and selectively permeable membranes

#99
20170205091
2017-07-20

A METHOD FOR DEHUMIDIFICATION OF AIR AND SYSTEM THERETO

#100
20170198926
2017-07-13

HUMIDITY CONTROL APPARATUS

#101
20170191715
2017-07-06

Outdoor unit for heat recovery VRF air conditioning system and heat recovery VRF air conditioning system

#102
20170184317
2017-06-29

Blended membranes for water vapor transport and methods for preparing same

#103
20170138630
2017-05-18

HEAT EXCHANGER AND VENTILATOR

#104
20170108231
2017-04-20

Air-conditioning and ventilation apparatus

#105
20170099785
2017-04-13

Controlled agricultural system with energy wheel for treating recirculating air and method of using same

#106
20170074530
2017-03-16

Indirect Evaporative Cooler Using Membrane-Contained, Liquid Desiccant for Dehumidification

#107
20170045257
2017-02-16

Heat exchange assembly in an air to air heat exchanger

#108
20170010007
2017-01-12

Dehumidification system

#109
20170010006
2017-01-12

DEHUMIDIFICATION SYSTEM

#110
20160377302
2016-12-29

FLEXIBLE LIQUID DESICCANT HEAT AND MASS TRANSFER PANELS WITH A HYDROPHILIC LAYER

#111
20160370021
2016-12-22

Energy recovery ventilation control system

#112
20160339380
2016-11-24

LIQUID DESICCANT REGENERATION SYSTEM, SYSTEMS INCLUDING THE SAME, AND METHODS OF OPERATING THE SAME

#113
20160322655
2016-11-03

Moisture exchanger and fuel cell arrangement comprising same

#114
20160305673
2016-10-20

METHOD AND DEVICE FOR THE CONCURRENT TRANSFER OF HEAT AND MOISTURE BETWEEN AT LEAST TWO DIFFERENT GS STREAMS

#115
20160290725
2016-10-06

Counter current heat exchange module

#116
20160290666
2016-10-06

Energy exchange system for conditioning air in an enclosed structure

#117
20160290664
2016-10-06

Counter-flow energy recovery ventilator (ERV) core

#118
20160258637
2016-09-08

ARCHITECTURAL HEAT AND MOISTURE EXCHANGE

#119
20160252262
2016-09-01

SYSTEM AND METHOD FOR AIR HANDLING AND AIR CONDITIONING

#120
20160178224
2016-06-23

CONDITIONING SYSTEM OF THE FREE COOLING TYPE FOR ENVIRONMENTS AND PARTICULARLY FOR COMPUTING CENTERS, METHOD OF OPERATION OF SUCH SYSTEM, AND APPARATUS FOR CARRYING OUT SUCH METHOD

#121
20160161131
2016-06-09

Enthalpy Exchanger Element And Method For The Production

#122
20160131373
2016-05-12

ARCHITECTURAL HEAT AND MOISTURE EXCHANGE

#123
20160123609
2016-05-05

Partition member for total heat exchange element, total heat exchange element using this member, and total heat exchange type ventilation device

#124
20160109143
2016-04-21

DEVICE AND METHOD FOR EXTRACTING VARIOUS COMPONENTS FROM AMBIENT AIR OR FROM A VAPOR-GAS MIXTURE, AND A SYSTEM FOR COOLING AIR, HEATING AIR, DESALINATION OF WATER AND/OR PURIFICATION OF WATER

#125
20160109142
2016-04-21

Rainscreen with integrated heat and moisture exchanger

#126
20160091214
2016-03-31

Nested heat transfer system

#127
20160084512
2016-03-24

Liquid-to-air membrane energy exchanger

#128
20160069575
2016-03-10

Natatorium dehumidifier

#129
20160054012
2016-02-25

Liquid to air membrane energy exchangers

#130
20150362202
2015-12-17

Air conditioning device

#131
20150338140
2015-11-26

Rooftop liquid desiccant systems and methods

#132
20150300665
2015-10-22

Humidification device

#133
20150260419
2015-09-17

Hydraulic device and evaporative system with such a hydraulic device

#134
20150241076
2015-08-27

Humidity control and ventilation device

#135
20150233589
2015-08-20

Liquid desiccant regeneration system, systems including the same, and methods of operating the same

#136
20150233588
2015-08-20

HEAT AND MASS TRANSFER DEVICE AND SYSTEMS INCLUDING THE SAME

#137
20150219346
2015-08-06

Humidifier and air-conditioning apparatus with humidifier

#138
20150198390
2015-07-16

Partitioning member for total heat exchange element, total heat exchange element and total heat exchange ventilator using the partitioning member for total heat exchange element

#139
20150128625
2015-05-14

Temperature modulated desiccant evaporative cooler and indirect and direct evaporative air conditioning systems, methods, and apparatus

#140
20150075747
2015-03-19

FLEXIBLE HEAT AND MOISTURE TRANSFER SYSTEM

#141
20150034283
2015-02-05

Architectural heat and moisture exchange

#142
20140374929
2014-12-25

Humidity control module and humidity control apparatus

#143
20140342132
2014-11-20

Cross-pleated membrane cartridges, and method and apparatus for making cross-pleated membrane cartridges

#144
20140326433
2014-11-06

Indirect evaporative cooler using membrane-contained, liquid desiccant for dehumidification

#145
20140326432
2014-11-06

COUNTER-FLOW ENERGY RECOVERY VENTILATOR (ERV) CORE

#146
20140260367
2014-09-18

Control system and method for a liquid desiccant air delivery system

#147
20140165637
2014-06-19

Coupled air-conditioning device

#148
20140116645
2014-05-01

Method And Device For Regulating The Temperature And Relative Humidity In A Building

#149
20140069571
2014-03-13

Cross-pleated membrane cartridges, and method and apparatus for making cross-pleated membrane cartridges

#150
20140054013
2014-02-27

Liquid panel assembly

#151
20140041830
2014-02-13

HEAT AND MOISTURE TRANSFER APPARATUS INTEGRATED INTO AN EXTERIOR PARTITION

#152
20140033924
2014-02-06

HEAT AND/OR MOISTURE EXCHANGE ELEMENT

#153
20140014289
2014-01-16

ENHANCED-EFFICIENCY ENERGY RECOVERY VENTILATION CORE

#154
20130303074
2013-11-14

Ventilation system

#155
20130281001
2013-10-24

Ventilation device

#156
20130233514
2013-09-12

Dual air flow exchanger with enhanced heat and humidity transfers

#157
20130186121
2013-07-25

Liquid-to-air membrane energy exchanger

#158
20130168046
2013-07-04

Double flow-circuit heat exchange device for periodic positive and reverse directional pumping using a bidirectional pump

#159
20130126123
2013-05-23

ARCHITECTURAL HEAT AND MOISTURE EXCHANGE

#160
20130105104
2013-05-02

Energy recovery ventilation control system

#161
20130056177
2013-03-07

Energy exchange system for conditioning air in an enclosed structure

#162
20130032318
2013-02-07

Counter current heat exchange module

#163
20130020049
2013-01-24

ARCHITECTURAL HEAT AND MOISTURE EXCHANGE

#164
20120255705
2012-10-11

METHOD AND AN APPARATUS IN A VENTILATION SYSTEM

#165
20120193820
2012-08-02

Cross-pleated membrane cartridges, and method and apparatus for making cross-pleated membrane cartridges

#166
20120174612
2012-07-12

Computer Room Air Conditioner With Pre-Cooler

#167
20120085112
2012-04-12

Heat pump humidifier and dehumidifier system and method

#168
20120047923
2012-03-01

Heat pump humidifier and dehumidifier system and method

#169
20120023988
2012-02-02

DESICCANT AIR-CONDITIONING SYSTEM

#170
20120012290
2012-01-19

ARCHITECTURAL HEAT AND MOISTURE EXCHANGE

#171
20110283720
2011-11-24

HEAT DISSIPATION SYSTEM WITH HYGROSCOPIC WORKING FLUID

#172
20110214446
2011-09-08

Desiccant air conditioner

#173
20110185752
2011-08-04

METHOD AND DEVICE FOR PREPARING AIR TO BE SUPPLIED TO A ROOM TO A DESIRED TEMPERATURE AND A DESIRED HUMIDITY

#174
20110146961
2011-06-23

Method of manufacturing total heat exchange element and total heat exchange element

#175
20110108256
2011-05-12

Total heat exchanging element and total heat exchanger

#176
20110073290
2011-03-31

Heat exchanger for dehumidifier using liquid desiccant and dehumidifier using liquid desiccant having the same

#177
20100319370
2010-12-23

Indirect evaporative cooler using membrane-contained, liquid desiccant for dehumidification

#178
20100257885
2010-10-14

HUMIDITY CONTROL APPARATUS

#179
20100181690
2010-07-22

Humidity controller

#180
20100170292
2010-07-08

Humidity controller

#181
20100170280
2010-07-08

HUMIDITY CONTROLLER

#182
20100139901
2010-06-10

Heat exchanger element and heat exchanger

#183
20100122805
2010-05-20

Double flow-circuit heat exchange device for periodic positive and reverse directional pumping

#184
20100101764
2010-04-29

Double flow-circuit heat exchange device for periodic positive and reverse directional pumping

#185
20100089558
2010-04-15

Total heat exchanging element and total heat exchanger

#186
20100084483
2010-04-08

System and method for controlling temperature and humidity of a controlled space

#187
20100032145
2010-02-11

HEAT CONDUCTION UNIT WITH IMPROVED LAMINAR

#188
20100018683
2010-01-28

Double flow-circuit heat exchange device for periodic positive and reverse directional pumping

#189
20100018393
2010-01-28

HUMIDIFICATION EXCHANGER WITH A CLEANING SYSTEM

#190
20090193974
2009-08-06

Cross-pleated membrane cartridges, and method and apparatus for making cross-pleated membrane cartridges

#191
20090126898
2009-05-21

Sorption paper and method of producing sorption paper

#192
20090126370
2009-05-21

Thermoelectric heat pump for heat and energy recovery ventilation

#193
20090071638
2009-03-19

Heat exchanger

#194
20090032228
2009-02-05

Recuperative climate conditioning system

#195
20080307803
2008-12-18

Humidity control and air conditioning

#196
20080230206
2008-09-25

Energy recovery and humidity control

#197
20080210412
2008-09-04

Heat exchanger

#198
20080141859
2008-06-19

Method for dehumidifying room air

#199
20080127658
2008-06-05

Dehumidification cooling apparatus for an indoor sports facility

#200
20080105418
2008-05-08

Heat Exchange Element and Heat Exchange Ventilator Including the Same

#201
20080085437
2008-04-10

Pleated heat and humidity exchanger with flow field elements

#202
20080047699
2008-02-28

Total heat exchanging element

#203
20080034966
2008-02-14

Versatile dehumidification process and apparatus

#204
20080011466
2008-01-17

Micro-cycle energy transfer systems and methods

#205
20070144351
2007-06-28

Heat exchanging unit

#206
20070089608
2007-04-26

Humidity controller apparatus

#207
20070084591
2007-04-19

Device for moisture exchange between gas flows

#208
20060270335
2006-11-30

TOTAL HEAT EXCHANGER AND VENTILATION SYSTEM USING THE SAME

#209
20060236713
2006-10-26

TOTAL HEAT EXCHANGE AIR CONDITIONER

#210
20060207429
2006-09-21

Humidity control apparatus

#211
20060179862
2006-08-17

Humidity control device

#212
20060168813
2006-08-03

Heat exchanger and heat exchange ventilator

#213
20060130508
2006-06-22

Total heat exchanger

#214
20060113070
2006-06-01

Heat exchanger of ventilating system

#215
20060090650
2006-05-04

Membrane, method of making same and heat exchanger furnished with said membrane

#216
20060011331
2006-01-19

Heat exchanger of ventilating system

#217
20050158198
2005-07-21

Micro-cycle energy transfer systems and methods

#218
20050082045
2005-04-21

Total heat exchanging element

#219
20050072303
2005-04-07

Device for dehumidifying room air

#220
17178020
2025-03-18

Air conditioner with selectively activated coil segments for increased dehumidification and efficiency

#221
16881308
2022-05-17

Dual-wheel HVAC system and method having improved dew point control

#222
15264914
2017-04-25

Liquid desiccant HVAC system

#223
13507728
2015-08-11

Elimination of fog formation during ambient air regasification of liquefied natural gas

#224
13482779
2016-03-08

Managing data center airflow