ClassID:

158660

F24H4/04 - CPC Classification

Classification description:

Fluid heaters characterised by the use of heat pumps; Water heaters Storage heaters

Recent Application in this class:
#1
20260126210
2026-05-07

WATER HEATER WITH MULTIPLE CONDENSERS

#2
20260110458
2026-04-23

WATER HEATER ENABLED TO RESPOND TO GRID CONDITIONS

#3
20260110456
2026-04-23

Jacket for Heat Pump Components of an Integrated Heat Pump Water Heater

#4
20260098659
2026-04-09

Heat Pump Assemblies for Water Heaters

#5
20260043586
2026-02-12

INTEGRATED SYSTEM FOR HEATING WATER

#6
20260043584
2026-02-12

INTEGRATED SYSTEM FOR HEATING WATER

#7
20260016193
2026-01-15

CONTROL METHOD OF HEAT PUMP SYSTEM AND HEAT PUMP SYSTEM

#8
20250383126
2025-12-18

HYBRID WATER HEATER SYSTEM AND METHODS OF USE

#9
20250354719
2025-11-20

WATER HEATING SYSTEM

#10
20250351782
2025-11-20

ENERGY AND HYDROMETRIC CONTROL OF HORTICULTURAL GREENHOUSES

#11
20250347444
2025-11-13

MACHINE LEARNING OF HEAT PUMP SYSTEM WATER USAGE PATTERNS FOR OPTIMIZED HEAT PUMP PERFORMANCE

#12
20250334351
2025-10-30

HEATING SYSTEM

#13
20250334296
2025-10-30

BLOWER ASSEMBLY FOR HEAT PUMP WATER HEATER SYSTEM

#14
20250297777
2025-09-25

AIR FUNNEL FOR A HEAT PUMP SYSTEM OF A WATER HEATER

#15
20250283634
2025-09-11

USE OF PHASE CHANGE MATERIALS TO STORE ENERGY FOR HEATING APPLICATIONS IN CHEMICAL PRODUCTION PROCESSES

#16
20250271175
2025-08-28

COMPACT AND CENTRALIZED HEAT PUMP WATER HEATER SKID PACKAGE

#17
20250271153
2025-08-28

Valve System and Methods

#18
20250237411
2025-07-24

EXPANSION SYSTEM AND HEAT PUMP INCORPORATING THE SAME

#19
20250230953
2025-07-17

MULTI-VOLTAGE WATER HEATER APPLIANCE

#20
20250224142
2025-07-10

AIR-TO-WATER HEAT PUMP WITH WATER-TO-WATER ALTERNATIVE AND ASSOCIATED METHODS

#21
20250216122
2025-07-03

HEAT PUMP APPARATUS AND HOT WATER SUPPLY SYSTEM

#22
20250216090
2025-07-03

THERMAL STORAGE SYSTEM AND INFORMATION PROCESSING APPARATUS

#23
20250198672
2025-06-19

MODULAR DE-SUPERHEATER AND WATER HEATER SYSTEM

#24
20250198657
2025-06-19

HEAT PUMP WATER FLOW CONTROL

#25
20250180250
2025-06-05

WATER HEATER

#26
20250180249
2025-06-05

WATER HEATER

#27
20250164148
2025-05-22

BENDABLE TABS FOR ATTACHING HEAT PUMP VENTING

#28
20250149015
2025-05-08

HEAT PUMP WATER HEATER MUFFLER

#29
20250146707
2025-05-08

HEAT PUMP WATER HEATER SOUND BAFFLE DEVICE

#30
20250146706
2025-05-08

TANK WATER HEATER AND WATER HEATING SYSTEM

#31
20250137689
2025-05-01

PREDICTIVE CONTROL FOR HEAT TRANSFER TO FLUIDS

#32
20250129971
2025-04-24

SYSTEM FOR HEATING WATER AND METHODS THEREOF

#33
20250116426
2025-04-10

APPARATUS AND METHODS FOR HEATING WATER WITH REFRIGERANT FROM AIR CONDITIONING SYSTEM

#34
20250109886
2025-04-03

MODULAR WATER HEATING AND TANK SYSTEM MANAGEMENT

#35
20250075943
2025-03-06

BATTERY-INTEGRATED WATER HEATER SYSTEM AND METHOD

#36
20250075941
2025-03-06

On-Demand Heat Pump Water Heater

#37
20250075940
2025-03-06

WATER HEATER APPLIANCE AND HEAT TRANSFER ASSEMBLY

#38
20250060131
2025-02-20

Shroud Structure

#39
20250035342
2025-01-30

HEAT STORAGE SYSTEM CONTROL DEVICE, HEAT STORAGE SYSTEM, HEAT STORAGE SYSTEM CONTROL METHOD , CONTROL PROGRAM, AND RECORDING MEDIUM

#40
20250027680
2025-01-23

INTEGRATED LIFTING HANDLE FOR A WATER HEATER APPLIANCE

#41
20250020345
2025-01-16

ENERGY MANAGEMENT SYSTEMS

#42
20250012483
2025-01-09

STORAGE TYPE HOT WATER SUPPLYING APPARATUS

#43
20250012457
2025-01-09

Systems and Methods for Controlling Hybrid Gas Water Heater Systems Including a Gas Valve

#44
20250012456
2025-01-09

Submerged Condensers and Heat Pump Water Heaters Including Same

#45
20250003637
2025-01-02

METHOD AND SYSTEM FOR IMPLEMENTING ADVANCED OPERATING MODES IN ELECTRIC RESISTANCE WATER HEATERS AND HEAT PUMP WATER HEATERS

#46
20240393012
2024-11-28

HEATING WATER

#47
20240392980
2024-11-28

Valve system and methods

#48
20240353126
2024-10-24

Double Hybrid Heat Pumps and Systems and Methods of Use and Operations

#49
20240328672
2024-10-03

HEAT PUMP WATER HEATER

#50
20240318869
2024-09-26

STORAGE TYPE HOT WATER SUPPLYING APPARATUS

#51
20240288187
2024-08-29

TEMPERATURE CONTROL SYSTEM COUPLED WITH HEAT PUMP WATER HEATER

#52
20240288178
2024-08-29

THERMOELECTRIC BATTERY SYSTEM AND METHODS THEREOF

#53
20240263837
2024-08-08

Providing domestic hot water from conventional residential split system heat pumps

#54
20240263836
2024-08-08

Systems and Methods for Duct-Free Heat Pump Water Heater

#55
20240240828
2024-07-18

Systems and Methods for Heating Water Using Heat Pump Water Heaters Having Natural Convection Evaporator Heat Exchangers

#56
20240230157
2024-07-11

STORAGE TYPE HEAT PUMP HOT WATER SUPPLYING APPARATUS

#57
20240230116
2024-07-11

DUAL FUNCTION WATER HEATER AND AIR-CONDITIONING UNIT

#58
20240200883
2024-06-20

HEATING SYSTEM

#59
20240200828
2024-06-20

Fan and Heat Pump Type Water Heater Using Same

#60
20240167701
2024-05-23

MODULAR HVAC-SHW SYSTEM AND A METHOD OF INTEGRATING THEREOF

#61
20240151433
2024-05-09

Control Method and Apparatus for Compression System, and Air Energy Heat Pump Water Heater

#62
20240151432
2024-05-09

HOT WATER HEATING DEVICE

#63
20240151431
2024-05-09

HOT WATER SUPPLY TANK

#64
20240142138
2024-05-02

COMBINED HEATING AND COOLING SYSTEM

#65
20240133588
2024-04-25

STORAGE TYPE HEAT PUMP HOT WATER SUPPLYING APPARATUS

#66
20240124747
2024-04-18

THERMAL BONDING FILM, METHOD FOR PRODUCING SAME, AND WATER TANK ADHESION STRUCTURE USING SAME FOR AIR-TO-WATER SOURCE HEAT PUMP

#67
20240117997
2024-04-11

SYSTEM FOR PRODUCING HOT OR COLD WATER

#68
20240102693
2024-03-28

HYBRID WATER HEATER

#69
20240085060
2024-03-14

MODULATING ENERGY USAGE BASED ON A CURRENT TARIFF IN A WATER PROVISION SYSTEM

#70
20240077231
2024-03-07

HEAT-PUMP WATER HEATER

#71
20240044549
2024-02-08

METHODS AND SYSTEMS AND APPARATUS TO SUPPORT REDUCED ENERGY AND WATER USAGE

#72
20240044547
2024-02-08

On-demand heat pump water heater

#73
20240044522
2024-02-08

METHODS AND SYSTEMS AND APPARATUS TO SUPPORT REDUCED ENERGY AND WATER USAGE

#74
20230375225
2023-11-23

PROVIDING DOMESTIC HOT WATER FROM CONVENTIONAL RESIDENTIAL SPLIT SYSTEM HEAT PUMPS

#75
20230228458
2023-07-20

HOT WATER SUPPLY APPARATUS

#76
20230228430
2023-07-20

Valve system and methods

#77
20230136851
2023-05-04

Retrofit hot water heat pump

#78
20230132393
2023-04-27

Air source heat pump system and defrosting control method thereof

#79
20230112157
2023-04-13

Method and system for implementing advanced operating modes in electric resistance water heaters and heat pump water heaters

#80
20230077758
2023-03-16

Heating system

#81
20230003435
2023-01-05

METHOD OF DEFROSTING A HEAT PUMP DEVICE AS WELL AS A HEAT PUMP DEVICE

#82
20230003395
2023-01-05

Heating system

#83
20220402327
2022-12-22

Integrated vehicular system for conditioning air and heating water

#84
20220373193
2022-11-24

Instantaneous hot water heat pump

#85
20220349631
2022-11-03

Double hybrid heat pumps and systems and methods of use and operations

#86
20220341628
2022-10-27

Providing domestic hot water from conventional residential split system heat pumps

#87
20220341600
2022-10-27

Heat pump water heater systems and methods thereto

#88
20220275951
2022-09-01

Valve system and methods

#89
20220235970
2022-07-28

Solar Heat Pump Water Heater

#90
20220228772
2022-07-21

HEAT STORAGE SYSTEM

#91
20220221199
2022-07-14

Heat pump system

#92
20220196251
2022-06-23

Device and method for converting solar PV energy into thermal energy storage using combined heat-pump and resistive heating elements in water heater

#93
20220186980
2022-06-16

Heating system

#94
20220163221
2022-05-26

Hybrid heat pump water heater systems and methods involving electric current, water temperature, and ambient temperature

#95
20220163219
2022-05-26

Submerged condensers and heat pump water heaters including same

#96
20220146157
2022-05-12

Air recirculation systems for heat pumps

#97
20220146147
2022-05-12

AIR HEATING AND POTABLE WATER SYSTEM HAVING A WATER HEATER AND A HYDRONIC AIR HANDLER

#98
20220120472
2022-04-21

AIR SOURCE HEAT PUMP SYSTEM AND DEFROSTING CONTROL METHOD THEREOF

#99
20220090822
2022-03-24

Hot water supply tank

#100
20220090803
2022-03-24

Integrated space conditioning and water heating systems and methods thereto

#101
20220074622
2022-03-10

SYNERGISTIC SYSTEM

#102
20220074602
2022-03-10

Heat distribution device

#103
20220042718
2022-02-10

Thermal storage system with coupled tanks

#104
20220042717
2022-02-10

Semi-open high-temperature heat pump system and working method thereof

#105
20220003456
2022-01-06

Hot water supply apparatus

#106
20210404714
2021-12-30

Multi-connected heat recovery air conditioning system and control method thereof

#107
20210372666
2021-12-02

Water tank mounting structure for ventilation treatment apparatus and ventilation treatment apparatus

#108
20210318038
2021-10-14

HEATING SYSTEM

#109
20210318027
2021-10-14

On-demand heat pump water heater

#110
20210316294
2021-10-14

Device and method for continuously producing catalysts based on low-temperature coprecipitation

#111
20210310695
2021-10-07

HEATER TANK FOR HEAT PUMP SYSTEM AND METHOD FOR CONTROLLING HEATER TANK

#112
20210231348
2021-07-29

Solar water heating system

#113
20210222911
2021-07-22

Liquid heater

#114
20210207848
2021-07-08

Cold-storage instantaneous heat pump water heater

#115
20210199343
2021-07-01

WATER HEATER CONTROLLED BY FREQUENCY REGULATION OF INVERTER

#116
20210108829
2021-04-15

Apparatus and methods for heating water with refrigerant from air conditioning system

#117
20210102712
2021-04-08

Heating system

#118
20210041143
2021-02-11

ELECTRIC WATER HEARING APPARATUS

#119
20200400319
2020-12-24

Hot water supply apparatus

#120
20200386444
2020-12-10

Hybrid water heater

#121
20200378651
2020-12-03

System and method for heating water

#122
20200326100
2020-10-15

Warm-water generating apparatus

#123
20200292207
2020-09-17

Valve system and methods

#124
20200191435
2020-06-18

OUTDOOR UNIT OF HEAT-PUMP HOT WATER DISPENSER

#125
20200124293
2020-04-23

Heat pump boiler

#126
20200003432
2020-01-02

Tank water heater assembly and transport assembly

#127
20190338963
2019-11-07

Water heater with a heat pump device and method for controlling a heat pump device

#128
20190299741
2019-10-03

Integrated vehicular system for conditioning air and heating water

#129
20190249901
2019-08-15

Apparatus for water temperature regulation

#130
20190249900
2019-08-15

Water thermoregulation device having an electric heat pump

#131
20190219303
2019-07-18

Hot water heating systems and related methods

#132
20190145634
2019-05-16

Hybrid heat pump water heaters

#133
20190128581
2019-05-02

HEAT PUMP UNIT AND MULTI-FUNCTIONAL MODE CONTROL METHOD

#134
20190128565
2019-05-02

Hybrid water heater

#135
20190107294
2019-04-11

Hot-water supply system, water heater, and control method for water heater

#136
20190086102
2019-03-21

Hot-water supply unit and hot-water supply system

#137
20180363947
2018-12-20

Using heat recovered from heat source to obtain high temperature hot water

#138
20180356134
2018-12-13

Integrated solar absorption heat pump system with evacuated tube solar collector

#139
20180340716
2018-11-29

Heat pump system with chilled water tank and photovoltaic thermal collector

#140
20180328596
2018-11-15

Heat pump hot water supply apparatus

#141
20180274793
2018-09-27

Water heater appliance with a cold water bypass

#142
20180252434
2018-09-06

Apparatus and methods for heating water with refrigerant from air conditioning system

#143
20180238561
2018-08-23

Heat pump water heater

#144
20180209689
2018-07-26

Heat utilizing apparatus

#145
20180195763
2018-07-12

Hot water heating system and related methods

#146
20180163991
2018-06-14

Water Heater Appliance

#147
20180156507
2018-06-07

GEOTHERMAL SYSTEM FOR HEATING WATER

#148
20180135885
2018-05-17

Water heater appliance

#149
20180119990
2018-05-03

Water mixing system for thermoregulating water

#150
20180094833
2018-04-05

WATER HEATER APPLIANCE

#151
20180058721
2018-03-01

Water heater distribution tube

#152
20180051909
2018-02-22

Sealed refrigeration system and appliance

#153
20180051908
2018-02-22

Integrated water heater

#154
20180017286
2018-01-18

Heat pump water heater appliance

#155
20180010822
2018-01-11

Apparatus and methods for heating water with refrigerant and phase change material

#156
20170314815
2017-11-02

Preheater for compressor

#157
20170314814
2017-11-02

Caloric Water Heater Appliance

#158
20170234576
2017-08-17

Air-conditioning and hot water supplying composite system

#159
20170219220
2017-08-03

Heat pump and heat exchanger heating system for a domestic hot water tank

#160
20170138649
2017-05-18

Integrated solar absorption heat pump system

#161
20170016631
2017-01-19

WATER HEATER APPLIANCE

#162
20170010052
2017-01-12

Method And Device For Charging A Stratified Thermal Energy Store

#163
20160348952
2016-12-01

Heat pump water heater appliance and an electronic mixing valve

#164
20160341449
2016-11-24

Electrochemical compressor utilizing a preheater

#165
20160320093
2016-11-03

Apparatus and methods for pre-heating water with air conditioning unit or heat pump

#166
20160273802
2016-09-22

Water heater with integrated sorption reactor

#167
20160265794
2016-09-15

Heat pump water heater and control method thereof

#168
20160231034
2016-08-11

WATER HEATER WITH INTEGRATED SORPTION REACTOR

#169
20160231021
2016-08-11

Sorption heat pump water heater

#170
20160195311
2016-07-07

Heat pump system, heat pump unit using the same, and method for controlling multiple functional modes thereof

#171
20160187043
2016-06-30

System and method for maintaining air temperature within a building HVAC system

#172
20160187036
2016-06-30

Heat recovery apparatus

#173
20160116191
2016-04-28

Refrigeration cycle device

#174
20160109156
2016-04-21

INTERNAL CONDENSER FOR HEAT PUMP WATER HEATER

#175
20160109155
2016-04-21

Heat pump water heater appliance

#176
20160109154
2016-04-21

TRANSITION MEMBER FOR HEAT PUMP APPLIANCE

#177
20160084534
2016-03-24

Electrochemical compressor based heating element and hybrid hot water heater employing same

#178
20160084525
2016-03-24

Heat pump water heater appliance

#179
20160069574
2016-03-10

HEAT PUMP WATER HEATER APPLIANCE AND A METHOD FOR OPERATING A HEAT PUMP WATER HEATER APPLIANCE

#180
20160061488
2016-03-03

Water heater appliance with an angled anode

#181
20160053469
2016-02-25

Apparatus, system and method for utilizing thermal energy

#182
20160040906
2016-02-11

HEAT PUMP WATER HEATER APPLIANCE

#183
20160010890
2016-01-14

Heat pump water heating system

#184
20160003486
2016-01-07

Hot water apparatus and failure notification method for hot water apparatus

#185
20150377496
2015-12-31

Heat pump water heater

#186
20150345806
2015-12-03

Hot and cold temperature supply device

#187
20150338129
2015-11-26

Water heating apparatus

#188
20150330662
2015-11-19

HEATING DEVICE AND METHOD FOR OPERATING THE SAME

#189
20150323223
2015-11-12

HEAT EXCHANGING DEVICE AND WATER HEATER USING THE SAME

#190
20150300658
2015-10-22

Endothermic base-mounted heat pump water heater

#191
20150276236
2015-10-01

IMPROVEMENTS TO THERMODYNAMIC SOLAR HEAT TRANSFER SYSTEMS

#192
20150253049
2015-09-10

Heat pump water heater appliance and a method for operating the same

#193
20150241087
2015-08-27

Gas-fired water heater with separable heat exchanger or detachably connected external water heater

#194
20150226453
2015-08-13

Heat pump water heater

#195
20150188388
2015-07-02

Facility for transforming heat energy

#196
20150184889
2015-07-02

Water heater appliance and a method for operating a water heater appliance

#197
20150159960
2015-06-11

Heating apparatus

#198
20150159913
2015-06-11

Hot water supply system

#199
20150159886
2015-06-11

HEAT PUMP WATER HEATER AND METHOD

#200
20150114316
2015-04-30

Heat pump water heater with heat utilization balance processor and heat utilization balance processor thereof

#201
20150040841
2015-02-12

SYSTEM AND METHOD FOR IMPROVING A WATER HEATING CYCLE IN A MULTI-PURPOSE HVAC SYSTEM

#202
20150000324
2015-01-01

Water tank and heat pump water heater comprising the same

#203
20140326004
2014-11-06

Method for managing a refrigerant charge in a multi-purpose HVAC system

#204
20140283540
2014-09-25

Heat pump water module with condensing coil in water storage tank

#205
20140263682
2014-09-18

Retrofit hot water system and method

#206
20140260392
2014-09-18

Apparatus and methods for heating water with refrigerant from air conditioning system

#207
20140260358
2014-09-18

Apparatus and methods for pre-heating water with air conditioning unit or heat pump

#208
20140161430
2014-06-12

System and method for operating a water heater using an auxiliary power source

#209
20140157814
2014-06-12

Heat pump water heater assembly

#210
20140156102
2014-06-05

DEVICE FOR THE HYBRID HEATING OF A FLUID OF A TANK

#211
20140027524
2014-01-30

Hot water supply system

#212
20130340690
2013-12-26

Water heater with centering thermal break support

#213
20130287373
2013-10-31

Endothermic base-mounted heat pump water heater

#214
20130205824
2013-08-15

Heat pump device

#215
20130205814
2013-08-15

Heat pump operation method and heat pump system

#216
20130202277
2013-08-08

Heated water energy storage system

#217
20130175160
2013-07-11

Electrolysis device and heat-pump-type water heater provided with same

#218
20130161404
2013-06-27

APPARATUS AND METHOD FOR HEATING WATER

#219
20130145788
2013-06-13

DEVICE FOR PREPARING HOT WATER BY RECOVERING HEAT FROM WASTE WATER

#220
20130047654
2013-02-28

HEAT PUMP HOT WATER APPARATUS

#221
20130044998
2013-02-21

Foam dam for appliance

#222
20130043252
2013-02-21

Water seepage abatement in water heaters

#223
20130042635
2013-02-21

HEAT PUMP WATER HEATER IN CONJUNCTION WITH GAS WATER HEATER

#224
20130031923
2013-02-07

Condenser coil holder for water heater

#225
20130025300
2013-01-31

Heat pump water heater

#226
20120312042
2012-12-13

HEAT PUMP BOILER AND CONTROL METHOD FOR THE SAME

#227
20120304677
2012-12-06

HEAT PUMP HYDRONIC HEATER

#228
20120261102
2012-10-18

Thermosyphon heat recovery

#229
20120255507
2012-10-11

Hot water supply system

#230
20120245739
2012-09-27

System and method for maintaining air temperature within a building HVAC system

#231
20120222631
2012-09-06

Gas-fired water heater with separable heat exchanger or detachably connected external water heater

#232
20120180511
2012-07-19

Energy system with a heat pump

#233
20120145095
2012-06-14

Residential heat pump water heater

#234
20120090559
2012-04-19

Economically-operated, dual-energy hot water supply system and method of operating the same

#235
20120067074
2012-03-22

SEPARABLE HEAT PUMP AND WATER HEATER

#236
20120060535
2012-03-15

HEAT PUMP WATER HEATER WITH EXTERNAL INLET TUBE

#237
20120060534
2012-03-15

HEAT PUMP WATER HEATER

#238
20120060521
2012-03-15

Transcritical heat pump water heater and method of operation

#239
20120055178
2012-03-08

HEAT PUMP APPARATUS AND METHOD FOR CONTROLLING REGULATING VALVE

#240
20120047930
2012-03-01

Dedicated dehumidifier and water heater

#241
20120023990
2012-02-02

Hybrid electric water heater with external discharge ducting

#242
20110284193
2011-11-24

HEAT EXCHANGER

#243
20110259560
2011-10-27

HOT WATER STORAGE TYPE HOT WATER SUPPLY DEVICE

#244
20110252820
2011-10-20

Heat Pump Water Heater

#245
20110239673
2011-10-06

Water heater containing a phase change material

#246
20110214444
2011-09-08

HEAT PUMP WATER HEATER

#247
20110203298
2011-08-25

Heat pump system and control method thereof

#248
20110197600
2011-08-18

Heat pump water heater and operating method thereof

#249
20110139259
2011-06-16

Storage hot water supplying apparatus, hot water supplying and space heating apparatus, operation control apparatus, operation control method, and operation control program

#250
20110107787
2011-05-12

Vertically arranged heat pump and method of manufacturing the vertically arranged heat pump

#251
20110061418
2011-03-17

HEAT PUMP TYPE HOT-WATER HEATER

#252
20110058795
2011-03-10

Heat pump water heater and associated control system

#253
20100281899
2010-11-11

Gas-fired heat pump water heater

#254
20100209084
2010-08-19

Residential heat pump water heater

#255
20100206869
2010-08-19

HEAT PUMP WATER HEATER CONTROL

#256
20100117843
2010-05-13

HEAT PUMP TYPE HOT WATER SUPPLY APPARATUS

#257
20100101767
2010-04-29

HEAT PUMP TYPE HOT WATER SUPPLY APPARATUS

#258
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