ClassID:

159751

F25D21/006 - CPC Classification

Classification description:

Defrosting; Preventing frosting; Removing condensed or defrost water; Defroster control with electronic control circuits

Recent Application in this class:
#1
20260126236
2026-05-07

SMART FREEZING APPLIANCE WITH DEFROSTING COMPARTMENT

#2
20260118051
2026-04-30

PET FEEDER, TEMPERATURE CONTROL METHOD THEREOF AND COMPUTER-READABLE STORAGE MEDIUM

#3
20260098678
2026-04-09

REFRIGERATOR

#4
20260063343
2026-03-05

Demand Defrost

#5
20260002725
2026-01-01

PREDICTIVE DEFROSTING FOR BEVERAGE STORES

#6
20250305751
2025-10-02

REFRIGERATOR COMPRISING TRANSPARENT DOOR WITH ATTACHED FILM HEATER

#7
20250290685
2025-09-18

REFRIGERATOR AND CONTROL METHOD THEREOF

#8
20250277766
2025-09-04

SENSING FROST AND ICE ACCUMULATION USING CAPACITANCE

#9
20250271203
2025-08-28

REFRIGERATOR APPLIANCE WITH CONDENSATION MITIGATION FEATURES

#10
20250271199
2025-08-28

DEFROST FAN CONTROL

#11
20250257927
2025-08-14

METHODS OF CONTROLLING A SUPPLY OF ELECTRICAL POWER AND ELECTRICAL SYSTEMS

#12
20250216144
2025-07-03

COOLING APPARATUS AND OPERATING METHOD THEREOF

#13
20250180272
2025-06-05

ADJUSTABLE AIR FLOW SYSTEM FOR A REFRIGERATOR APPLIANCE

#14
20250109901
2025-04-03

SENSOR ARRAY FOR SMART FROST DIAGNOSTICS

#15
20250067499
2025-02-27

EVAPORATION TRAY FOR REFRIGERATOR CONDENSATION WATER

#16
20240410636
2024-12-12

Method and a system for preventing a freeze event using refrigerant temperature

#17
20240344755
2024-10-17

Glass Heat Zone Control

#18
20240328702
2024-10-03

FROST SENSOR, DEFROST SYSTEM, AND DEFROST METHODS

#19
20240315325
2024-09-26

REMOTE MONITORING OF PERISHABLE TRADE ITEMS IN ENVIRONMENTALLY-CONTROLLED STORAGE CONTAINERS

#20
20240280312
2024-08-22

ACCESSIBLE COOLING ENVIRONMENT

#21
20240280302
2024-08-22

Demand Defrost

#22
20240085088
2024-03-14

REFRIGERATOR

#23
20240019191
2024-01-18

ELECTRONIC DEVICE AND CONTROLLING METHOD OF ELECTRONIC DEVICE

#24
20240019190
2024-01-18

REFRIGERATOR

#25
20240019189
2024-01-18

REFRIGERATOR

#26
20230413385
2023-12-21

HEATING DEVICE AND CONTROL METHOD THEREOF

#27
20230408168
2023-12-21

Hot gas defrost using fluid from high pressure tank

#28
20230408167
2023-12-21

Hot gas defrost using low temperature compressor discharge gas and auxiliary flash tank

#29
20230384018
2023-11-30

COLD STORAGE

#30
20230358460
2023-11-09

Carbon dioxide heat pump evaporator

#31
20230349625
2023-11-02

Systems and methods of operating refrigerator appliances

#32
20230304724
2023-09-28

Defrosting control system, defrosting control method, and recording medium

#33
20230288124
2023-09-14

REFRIGERATOR

#34
20230280082
2023-09-07

Method and Apparatus for Determining Freezer Status

#35
20230204276
2023-06-29

Refrigeration cycle apparatus

#36
20230194144
2023-06-22

REFRIGERATOR

#37
20230175758
2023-06-08

REFRIGERATOR

#38
20230106953
2023-04-06

PROPER DEICING END DETECTION AND DEFROST CYCLE OPTIMIZATION

#39
20220397331
2022-12-15

METHOD OF CONTROLLING AIR-COOLING DEVICE AND AIR-COOLING DEVICE

#40
20220283109
2022-09-08

SENSING FROST AND ICE ACCUMULATION USING CAPACITANCE

#41
20220260301
2022-08-18

Defrost control method in a refrigeration installation and associated control device

#42
20220252326
2022-08-11

Defrosting control method, central controller and heating system

#43
20220236001
2022-07-28

Refrigerator and deep freezing compartment defrost operation

#44
20220235993
2022-07-28

INDUCTION HEATING APPARATUS AND METHOD FOR CONTROLLING INDUCTION HEATING APPARATUS

#45
20220187007
2022-06-16

Transportation refrigeration unit with adaptive defrost

#46
20220090841
2022-03-24

Refrigerator and control method, device and system thereof

#47
20220026134
2022-01-27

Refrigerator

#48
20220011036
2022-01-13

CONTROL METHOD AND DEVICE FOR REFRIGERATOR, AND REFRIGERATOR

#49
20210400179
2021-12-23

SENSOR SYSTEM WITH CLEANING AND HEATING

#50
20210396451
2021-12-23

Defrost cycle control assembly in a heat pump

#51
20210348834
2021-11-11

Freezer case with variable superheat setpoints

#52
20210333039
2021-10-28

Air conditioner system and method to control defrosting using camera and sensor data

#53
20210325103
2021-10-21

REFRIGERATOR

#54
20210282455
2021-09-16

Remote monitoring of perishable trade items in environmentally-controlled storage containers

#55
20210239384
2021-08-05

Refrigerator

#56
20210177052
2021-06-17

Monitoring perishable items in humidity-controlled environments

#57
20210148625
2021-05-20

Refrigerator

#58
20210140701
2021-05-13

Controlled defrost for chilled environments

#59
20210071932
2021-03-11

Adaptive defrost activation method

#60
20210071931
2021-03-11

Refrigerator and controlling method for the same

#61
20210055035
2021-02-25

AIR-COOLED REFRIGERATOR, AND CONTROL METHOD, CONTROL SYSTEM AND CONTROLLER FOR DEFROSTING THEREOF

#62
20210055034
2021-02-25

REFRIGERATOR AND CONTROLLING METHOD THE SAME

#63
20210025639
2021-01-28

Refrigerator and method for controlling the same

#64
20210010738
2021-01-14

REFRIGERATOR AND METHOD FOR CONTROLLING SAME

#65
20200408458
2020-12-31

System and method for defrosting/ de-icing an air-conditioner

#66
20200400366
2020-12-24

Method and system for controlling the defrost cycle of a vapor compression system for increased energy efficiency

#67
20200370815
2020-11-26

REFRIGERATOR

#68
20200309444
2020-10-01

Defrost cycle control assembly in a heat pump

#69
20200300533
2020-09-24

Refrigerator

#70
20200278146
2020-09-03

Air-conditioning apparatus

#71
20200256609
2020-08-13

System for transport refrigeration control of multiple compartments

#72
20200254848
2020-08-13

Heat pump secondary coolant loop heat exchanger defrost system for a motor vehicle

#73
20200224960
2020-07-16

Multifunctional radio frequency systems and methods for UV sterilization, air purification, and defrost operations

#74
20200224951
2020-07-16

Refrigerator

#75
20200217572
2020-07-09

Ice maker

#76
20200208900
2020-07-02

Methods and systems for energy efficient defrost of a transport climate control system evaporator

#77
20200173708
2020-06-04

Refrigerator and control method thereof

#78
20200166269
2020-05-28

Refrigerator and method of controlling the same

#79
20200141625
2020-05-07

Method and apparatus for determining freezer status

#80
20200116417
2020-04-16

Thawing method for thawing device

#81
20200018526
2020-01-16

Refrigerator

#82
20200003480
2020-01-02

Method for controlling defrost in refrigeration systems

#83
20200003478
2020-01-02

Refrigerator and controlling method thereof

#84
20190390873
2019-12-26

Heat pump apparatus and method for installing the same

#85
20190376700
2019-12-12

In-wall dehumidifier control system

#86
20190360739
2019-11-28

Distributed control system for thermal snow melt and freeze protection systems

#87
20190331397
2019-10-31

Target material sensing using resonant circuit with sensing capacitor and electrical isolation

#88
20190323761
2019-10-24

Dehumidifying Device with Temperature Control

#89
20190285330
2019-09-19

Method and system for reducing moisture content of a cooling compartment

#90
20190277534
2019-09-12

Refrigeration cycle apparatus

#91
20190257567
2019-08-22

System and method of controlling refrigerator and freezer units to reduce consumed energy

#92
20190234677
2019-08-01

Freezer dehumidification system

#93
20190234676
2019-08-01

Coil heating systems for heat pump systems

#94
20190219326
2019-07-18

Predictive maintenance of refrigeration cases

#95
20190195550
2019-06-27

Refrigeration apparatus

#96
20190186803
2019-06-20

Refrigerator

#97
20190154321
2019-05-23

Refrigeration cycle apparatus

#98
20190145693
2019-05-16

Controlled defrost for refrigeration systems

#99
20190120539
2019-04-25

Intelligent voltage control for electric heat and defrost in transport refrigeration system

#100
20190101325
2019-04-04

Multifunctional radio frequency systems and methods for UV sterilization, air purification, and defrost operations

#101
20190092129
2019-03-28

Return air intake grille de-icing method

#102
20190072320
2019-03-07

Predictive maintenance of refrigeration cases

#103
20190072310
2019-03-07

Refrigerator

#104
20190064097
2019-02-28

Sensing frost and ice accumulation using capacitance

#105
20190003760
2019-01-03

METHOD FOR DEFROSTING A HEAT PUMP

#106
20180347890
2018-12-06

Method for operating a cooling unit and cooling unit configuration for an aircraft

#107
20180340729
2018-11-29

Cold storage health monitoring system

#108
20180328646
2018-11-15

Timer for a cooling appliance

#109
20180313596
2018-11-01

Refrigerator and method for controlling the same

#110
20180292121
2018-10-11

Refrigerator

#111
20180292119
2018-10-11

Refrigerator

#112
20180259240
2018-09-13

Vehicle heat management device

#113
20180238614
2018-08-23

Refrigerator with sabbath mode

#114
20180216869
2018-08-02

DEFROST INDICATOR

#115
20180209717
2018-07-26

Method and apparatus for enhanced off-cycle defrost

#116
20180209697
2018-07-26

Refrigeration cycle device

#117
20180172331
2018-06-21

Refrigerator having compartments cooled to different internal temperatures

#118
20180164019
2018-06-14

METHOD FOR CONTROLLING DEFROST OPERATION OF A REFRIGERATION SYSTEM

#119
20180142929
2018-05-24

Method and system for monitoring refrigeration system

#120
20180128535
2018-05-10

Supplemental cooling system load control using random start of first defrost cycle

#121
20180112907
2018-04-26

Automatic air defrost system

#122
20180106532
2018-04-19

Cold Storage Health Monitoring System

#123
20180094849
2018-04-05

High-frequency self-defrosting evaporator coil

#124
20180045453
2018-02-15

Defrost control using fan data

#125
20180023885
2018-01-25

Refrigerator

#126
20170336130
2017-11-23

HOT LIQUID WASH DEFROSTING METHODS AND SYSTEMS

#127
20170299251
2017-10-19

Cooling device comprising a thawing compartment and the control method thereof

#128
20170211871
2017-07-27

Sealed System and a Method For Defrosting an Evaporator

#129
20170191733
2017-07-06

Method for operating a fan within a refrigerator appliance

#130
20170191732
2017-07-06

Defrost control using fan data

#131
20170184333
2017-06-29

Method of deciding when to terminate a defrosting cycle within a refrigerated container

#132
20170146278
2017-05-25

REMOVAL OF AN ACCUMULATED FROZEN SUBSTANCE FROM A COOLING UNIT

#133
20170038125
2017-02-09

Air conditioner and defrosting operation method therefor

#134
20170030628
2017-02-02

System and method of controlling refrigerator and freezer units to reduce consumed energy

#135
20160370095
2016-12-22

Refrigerator and method of controlling the same

#136
20160305702
2016-10-20

Heat pump system and operation method therefor

#137
20160258668
2016-09-08

Defrost control using fan data

#138
20160245573
2016-08-25

Frozen beverage machine control system and method

#139
20160238301
2016-08-18

Defrost learning algorithm based on time of defrost state operation

#140
20160209099
2016-07-21

De-icing control in a vapor compression heat pump system

#141
20160161165
2016-06-09

Air-conditioning system using control of number of compressors based on predetermined frequency ranges

#142
20160123649
2016-05-05

Defrosting apparatus, refrigerator including the same, and control method thereof

#143
20160116203
2016-04-28

Scheduling defrost events and linking refrigeration circuits in a refrigeration system

#144
20160084566
2016-03-24

Refrigerator and controlling method thereof

#145
20160084565
2016-03-24

REFRIGERATOR APPLIANCE AND METHOD OF OPERATING A REFRIGERATOR APPLIANCE

#146
20160061504
2016-03-03

Variable speed compressor control with sound-controlled defrost mode

#147
20160033193
2016-02-04

Heat pump system for vehicle and method of controlling the same

#148
20160025403
2016-01-28

TEMPERATURE REGULATING SYSTEM AND METHOD OF DEICING THE TEMPERATURE REGULATING SYSTEM

#149
20150362247
2015-12-17

DEFROST APPLIANCE

#150
20150292789
2015-10-15

Air-conditioning apparatus providing defrosting without suspending a heating operation

#151
20150285552
2015-10-08

REFRIGERATOR APPLIANCE AND A METHOD FOR DEFROSTING A FOOD ITEM

#152
20150285551
2015-10-08

Merchandiser including frame heaters

#153
20150267957
2015-09-24

Air conditioner with two injection circuits and method of controlling the air conditioner

#154
20150247663
2015-09-03

Apparatus for defrosting evaporator in refrigeration system using infrared emitting diode sensor

#155
20150241111
2015-08-27

Electric Heat Defrost Alogrithm

#156
20150219385
2015-08-06

Refrigeration device having automatic defrosting and method for operating a refrigeration device of this type

#157
20150211779
2015-07-30

System and Method of Protecting an HVAC System

#158
20150184925
2015-07-02

Air conditioner and control method of air conditioner

#159
20150184924
2015-07-02

HEAT PUMP CONTROLLER FOR USE IN MULTIPLE TYPES OF HEAT EXCHANGE SYSTEMS

#160
20150184923
2015-07-02

REFRIGERATOR FOR PREVENTING AND/OR REDUCING CONDENSATION AND METHOD FOR CONTROLLING SAME

#161
20150184921
2015-07-02

Heat pump controller with user-selectable defrost modes and reversing valve energizing modes

#162
20150089966
2015-04-02

Using weather data in heat pump defrost control

#163
20150033774
2015-02-05

Systems and methods for potable water production

#164
20150027144
2015-01-29

Air conditioner and control method thereof

#165
20150013354
2015-01-15

Hot liquid wash defrosting methods and systems

#166
20140283538
2014-09-25

Method and apparatus for initiating coil defrost in a refrigeration system evaporator

#167
20140260362
2014-09-18

Heat exchanger, heat recovery ventilator including the same, and method for defrosting and checking operations thereof

#168
20140230473
2014-08-21

Air-conditioning apparatus

#169
20140165630
2014-06-19

Method for controlling defrost operation of a refrigeration system

#170
20140165629
2014-06-19

Method for controlling the defrost of an evaporator in a refrigeration appliance

#171
20140157800
2014-06-12

Refrigerator and method for operating the same

#172
20140150477
2014-06-05

Defrost control using fan data

#173
20140123690
2014-05-08

METHOD FOR IMPROVING EFFICIENCY OF A REFRIGERATOR APPLIANCE DURING A DEFROST CYCLE

#174
20140053581
2014-02-27

Cooling apparatus and control method thereof

#175
20140041404
2014-02-13

Air conditioner for vehicle

#176
20140033744
2014-02-06

Cooling apparatus and control method thereof

#177
20130305749
2013-11-21

Demand side management enabling of electro mechanically controlled refrigerators and refrigeration systems

#178
20130239596
2013-09-19

Air conditioner and method of controlling the same

#179
20130178997
2013-07-11

Energy-savings control system for showcases, refrigerators and freezers

#180
20130118195
2013-05-16

Self-diagnosing transport refrigerating apparatus

#181
20130086928
2013-04-11

Refrigerator and control method thereof

#182
20130081416
2013-04-04

Refrigerator

#183
20130081415
2013-04-04

REFRIGERATOR AND CONTROLLING METHOD THEREOF

#184
20130042638
2013-02-21

Refrigerator and controlling method thereof

#185
20130025303
2013-01-31

Refrigerator and control method thereof

#186
20120204582
2012-08-16

Apparatus for managing operation of freezing machine

#187
20120198863
2012-08-09

Variable power defrost heater

#188
20120102986
2012-05-03

Reverse cycle defrost method and apparatus

#189
20120055181
2012-03-08

Cooling system and defrosting control method thereof

#190
20120055179
2012-03-08

DSM defrost during high demand

#191
20120047922
2012-03-01

Direct cooling refrigerator and control method thereof

#192
20120047921
2012-03-01

DSM ENABLING OF ELECTRO MECHANICALLY CONTROLLED REFRIGERATION SYSTEMS

#193
20120042667
2012-02-23

MICROPROCESSOR CONTROLLED DEFROST TERMINATION

#194
20120031985
2012-02-09

FAULT TOLERANT APPLIANCE

#195
20120029719
2012-02-02

DSM enabling of electro mechanically controlled refrigeration systems

#196
20120023974
2012-02-02

REFRIGERATOR AND METHOD FOR CONTROLLING THE SAME

#197
20120011883
2012-01-19

Cooling apparatus and refrigerator having the same

#198
20110209489
2011-09-01

Heat pump defrost control

#199
20110185756
2011-08-04

Air-conditioning apparatus

#200
20110132921
2011-06-09

VENDING MACHINE IMPROVEMENT

#201
20110132019
2011-06-09

Heat pump apparatus

#202
20110088415
2011-04-21

Adaptive defrost controller for a refrigeration device

#203
20110079027
2011-04-07

Removal of an accumulated frozen substance from a cooling unit

#204
20110067423
2011-03-24

Defrost timer for refrigerator and refrigerator

#205
20110036105
2011-02-17

Method for defrost control of a refrigerator and refrigerator which uses this method

#206
20100242506
2010-09-30

EVAPORATOR FAN MOTOR CONTROL IN A REFRIGERATED MERCHANDISER

#207
20100205984
2010-08-19

Integrated Refrigerating/Freezing System and Defrost Method

#208
20100154443
2010-06-24

Control method of refrigerator

#209
20100089081
2010-04-15

VENDING MACHINE AND METHOD FOR DEFROSTING

#210
20100070083
2010-03-18

CONTROL METHOD OF REFRIGERATOR

#211
20100024452
2010-02-04

MICRO-CHANNEL EVAPORATOR WITH FROST DETECTION AND CONTROL

#212
20090210102
2009-08-20

Method for controlling temperature in a refrigeration system

#213
20090152287
2009-06-18

Vending machine improvement

#214
20090145144
2009-06-11

Controller and control method for refrigerating system

#215
20090113902
2009-05-07

Control method for a refrigerator

#216
20090090114
2009-04-09

Refrigeration control device to reduce power consumption of a refrigeration appliance

#217
20080223049
2008-09-18

Adaptive defrost control for frozen product dispensers

#218
20080168783
2008-07-17

Air conditioner having an ice melting operation terminated on the basis of refrigerant temperature and pressure

#219
20080092569
2008-04-24

COOLING UNIT WITH MULTI-PARAMETER DEFROST CONTROL

#220
20070295015
2007-12-27

Method and apparatus for affecting defrost operations for a refrigeration system

#221
20070234748
2007-10-11

System and method for determining defrost power delivered by a defrost heater

#222
20070209376
2007-09-13

Method for controlling a refrigeration appliance

#223
20070209375
2007-09-13

Adaptive defrost control circuit with relay power saving feature

#224
20070130974
2007-06-14

Air conditioner defrost system

#225
20070125103
2007-06-07

Electronic defrost timer for mechanical refregerator

#226
20070033962
2007-02-15

Refrigerator and control method thereof

#227
20070033955
2007-02-15

Electrically controlled defrost and expansion valve apparatus

#228
20060248904
2006-11-09

Temperature control system and method of operating the same

#229
20060243722
2006-11-02

Method for power regulation of a defroster heater and refrigeration device with integrated defroster heating

#230
20060242982
2006-11-02

Defrost system for a refrigeration device

#231
20060242973
2006-11-02

Refrigeration device and operating method for the same

#232
20060232907
2006-10-19

Wide input voltage range relay drive circuit for universal defrost timer

#233
20060230768
2006-10-19

Universal defrost timer

#234
20050241324
2005-11-03

Defrosting method for air conditioner

#235
20050183427
2005-08-25

Adaptive defrost method

#236
20050115252
2005-06-02

Defrosting

#237
20050086955
2005-04-28

Reduced energy refrigerator defrost method and apparatus

#238
20050011206
2005-01-20

Electrically controlled defrost and expansion valve apparatus

#239
16427759
2022-11-08

Freezers and operating methods using adaptive defrost

#240
15813219
2018-12-25

Refrigerator appliance having a defrost chamber

#241
15677403
2019-01-22

Deicing system for air compressor aftercooler

#242
15059546
2016-10-04

System for defrost termination