ClassID:

201654

H01F27/12 - CPC Classification

Classification description:

Details of transformers or inductances, in general; Cooling ; Ventilating; Liquid cooling Oil cooling

Sub-classes:
Recent Application in this class:
#1
20260122835
2026-04-30

AN AIRFLOW GENERATOR

#2
20260120936
2026-04-30

SYSTEM INCLUDING A TRANSFORMER

#3
20260120935
2026-04-30

HEAT GENERATING ELECTRIC COMPONENT TANK

#4
20260113868
2026-04-23

A TRANSFORMER ARRANGEMENT

#5
20260112537
2026-04-23

VIBRATION REDUCTION UNIT AND TRANSFORMER COMPRISING SAME

#6
20260009584
2026-01-08

COOLING ARRANGEMENT AND METHOD FOR COOLING AT LEAST ONE OIL-TO-AIR EXTERNAL HEAT EXCHANGER

#7
20250378990
2025-12-11

TECHNOLOGIES FOR PREVENTING THE EXPLOSION OF ELECTRICAL TRANSFORMERS

#8
20250251357
2025-08-07

Detecting Damage to a Bladder in an Oil Reservoir of a Power Transformer

#9
20250054675
2025-02-13

HELICOIDAL GUIDE FOR THE COOLING OF A MEDIUM-FREQUENCY TRANSFORMER

#10
20240421568
2024-12-19

Subsea substation system with one enclosure having separate thermal zones

#11
20240420880
2024-12-19

STATIC ELECTRIC INDUCTION DEVICE AND OPERATING METHOD

#12
20240371562
2024-11-07

COOLING ARRANGEMENT AND METHOD FOR COOLING AT LEAST ONE OIL-TO-AIR EXTERNAL HEAT EXCHANGER

#13
20240321501
2024-09-26

END COIL COOLING DEVICE

#14
20240282498
2024-08-22

VARIABLE VOLTAGE INDUCTOR WITH DIRECT LIQUID COOLING

#15
20240234006
2024-07-11

CORRUGATED RADIATOR FOR TRANSFORMER

#16
20240136104
2024-04-25

CORRUGATED RADIATOR FOR TRANSFORMER

#17
20240087791
2024-03-14

Electric device comprising liquidfilled tank and cable box with current measuring device

#18
20230326651
2023-10-12

HOUSING PART, ELECTRICAL SYSTEM AND OPERATING METHOD

#19
20230317365
2023-10-05

POWER TRANSFORMER

#20
20230314094
2023-10-05

ELECTRIC ARRANGEMENT, PANEL AND HEAT EXCHANGER

#21
20230245811
2023-08-03

POWER INDUCTOR WITH VARIABLE WIDTH AIR GAP

#22
20230197335
2023-06-22

Assembly for automatic tap adjustment of a power transformer using load tap changer and a method and support assembly for mounting the same

#23
20230178297
2023-06-08

Electromagnetic device equipped with at least one wireless sensor

#24
20230142063
2023-05-11

LIQUID/FLUID COOLING SYSTEMS FOR HIGH POWER-DENSITY (HPD) TRANSFORMERS

#25
20230137863
2023-05-04

POWER INDUCTOR WITH INTERNAL COOLING PASSAGES

#26
20230133073
2023-05-04

Insulator having internal cooling channels

#27
20230108465
2023-04-06

Power inductor with cooling guide

#28
20230026099
2023-01-26

System and method of determining age of a transformer

#29
20220348812
2022-11-03

TRANSFORMER POWER ENHANCEMENT

#30
20220277883
2022-09-01

TANK FOR A LIQUID-FILLED SHELL TRANSFORMER OR SHELL REACTOR

#31
20220157507
2022-05-19

Variable voltage inductor with direct liquid cooling

#32
20220076882
2022-03-10

Reducing ageing of an insulation material of a winding, in particular of an oil-impregnated high-voltage device

#33
20220068541
2022-03-03

Temperature regulation of an inductor assembly

#34
20220037072
2022-02-03

Stationary induction apparatus

#35
20220019937
2022-01-20

APPARATUS AND METHOD FOR PREDICTING TRANSFORMER STATE IN CONSIDERATION OF WHETHER OIL FILTERING IS PERFORMED

#36
20210366648
2021-11-25

A COIL ASSEMBLY FOR USE IN A COMMON MODE CHOKE

#37
20210350966
2021-11-11

Low-profile transformer and related components, systems, and methods

#38
20210287844
2021-09-16

Transformer with integrated cooling

#39
20210270797
2021-09-02

Systems and methods for dissolved gas analysis

#40
20210225583
2021-07-22

On-load tap changer head and on-load tap changer having an on-load tap changer head

#41
20210166856
2021-06-03

THERMALLY INSULATED RADIATOR ELEMENT

#42
20210123797
2021-04-29

Fiber optic sensing system for grid-based assets

#43
20210121797
2021-04-29

System for preventing gas bubbles in oil flow to enter a high-voltage device and a method for preventing gas bubbles to enter a high-voltage device

#44
20210110956
2021-04-15

Transformer radiator

#45
20210104347
2021-04-08

Housing, Which Contains A Cooling Liquid, Of An Electric Device

#46
20210065958
2021-03-04

Power inductor with variable width air gap

#47
20210063496
2021-03-04

System and method of determining age of a transformer

#48
20210057124
2021-02-25

ENZYMATICALLY-DEGUMMED OIL AND USES THEREOF

#49
20210050146
2021-02-18

Method and device for insulation of high-voltage generator tank

#50
20210050139
2021-02-18

Electric device with pressing plates for clamping a magnetizable core

#51
20210050138
2021-02-18

Hybrid thermal management of electronics

#52
20210020355
2021-01-21

Dissolved gas analysis devices, systems, and methods

#53
20210005345
2021-01-07

USE OF A MIXTURE AS DIELECTRIC FLUID

#54
20200393521
2020-12-17

Smart grid distribution transformer

#55
20200388430
2020-12-10

Non-liquid immersed transformers with improved coil cooling

#56
20200355668
2020-11-12

Device, system, and method for analyzing transformer oil

#57
20200343033
2020-10-29

Transportable power transformer unit

#58
20200335267
2020-10-22

Polyamide electrical insulation for use in liquid filled transformers

#59
20200317237
2020-10-08

ELECTRICAL DEVICE FOR CONNECTION TO A HIGH-VOLTAGE SUPPLY SYSTEM, AND METHOD FOR DETECTING A FAULT OF A COMPONENT OF THE ELECTRICAL DEVICE

#60
20200279670
2020-09-03

Dielectric fluid comprising fatty acid esters

#61
20200258669
2020-08-13

METHOD FOR SERVICING A TRANSFORMER AND TRANSFORMER ARRANGEMENT

#62
20200211761
2020-07-02

Dissolved gas analysis devices, systems, and methods

#63
20200203066
2020-06-25

Assembly for connection to a high-voltage system with adjustable impedance

#64
20200135378
2020-04-30

Thermal management of high power inductors

#65
20200114393
2020-04-16

System for detecting an object approaching and/or impacting electrical equipment

#66
20200032919
2020-01-30

Rapid depressurization and explosion prevention system for electrical transformers

#67
20200013535
2020-01-09

TRANSFORMER OIL, TRANSFORMER OIL EVALUATION METHOD, AND TRANSFORMER OIL EVALUATION APPARATUS

#68
20190362876
2019-11-28

Electrical equipment with rupture oil deflector

#69
20190304673
2019-10-03

System and method for transformer control

#70
20190304657
2019-10-03

ELECTRIC TRANSFORMER

#71
20190287689
2019-09-19

Systems and methods for inspecting a machine

#72
20190287688
2019-09-19

Liquid tank inspection including device for launching submersible

#73
20190286146
2019-09-19

Submersible inspection device and wireless communication with a base station

#74
20190259521
2019-08-22

Electrical device having encapsulated spaces cooled with different intensity

#75
20190257812
2019-08-22

Method of estimating overheating temperature of oil-immersed electric appliance

#76
20190206605
2019-07-04

Cover for a distribution transformer filled with a dielectric liquid

#77
20190172632
2019-06-06

Method and device for insulation of high-voltage generator tank

#78
20190120683
2019-04-25

Liquid level indicating device and liquid-cooled electric appliance

#79
20190088411
2019-03-21

Three-phase transformer

#80
20190088399
2019-03-21

Liquid cooled magnetic element

#81
20190056446
2019-02-21

METHOD AND SYSTEM FOR ASSESSMENT OF FAULT SEVERITY, RISK EXPOSURE, AND GASSING STATUS FOR LIQUID-FILLED HIGH-VOLTAGE APPARATUS

#82
20190051443
2019-02-14

Transformer systems and methods for operating a transformer system

#83
20190027292
2019-01-24

Transformer with temperature-dependent cooling function

#84
20180366921
2018-12-20

Bullet-resistant electrical installation

#85
20180358160
2018-12-13

Stationary induction apparatus

#86
20180301279
2018-10-18

Intra-tank under-oil vacuum primary switches for medium voltage transformer applications

#87
20180294068
2018-10-11

Enzymatically-degummed oil and uses thereof

#88
20180268981
2018-09-20

METHOD AND SYSTEM FOR CONTROLLING COOLING SYSTEM OF POWER EQUIPMENT

#89
20180259451
2018-09-13

Dissolved gas analysis devices, systems, and methods

#90
20180259444
2018-09-13

Dissolved gas analysis devices, systems, and methods

#91
20180247753
2018-08-30

Combined subsea transformer and compensating HV reactor

#92
20180233274
2018-08-16

POLYAMIDE ELECTRICAL INSULATION FOR USE IN LIQUID FILLED TRANSFORMERS

#93
20180233271
2018-08-16

Transformer with integrated cooling

#94
20180204670
2018-07-19

Stationary induction apparatus

#95
20180166209
2018-06-14

Stationary induction apparatus

#96
20180143176
2018-05-24

Diagnosis method for internal fault of oil-immersed electric apparatus

#97
20180114630
2018-04-26

Electrical device with dynamic winding pressing

#98
20180114626
2018-04-26

Transformer with heated radiator member

#99
20180095041
2018-04-05

Optical sensing system for determining hydrogen partial pressure

#100
20180075963
2018-03-15

Traction transformer

#101
20180059087
2018-03-01

Bi-directional oil-flow adapter for attaching to a valve-controlled port of a transformer

#102
20170352465
2017-12-07

Cooling fan variable-frequency control system for a power transformer

#103
20170338033
2017-11-23

PULSE POWER MODULE

#104
20170336243
2017-11-23

Electrical device with a housing holding insulation oil and a sensor and method of monitoring the device

#105
20170330670
2017-11-16

Liquid cooled magnetic element

#106
20170316864
2017-11-02

Replacement transformer with modular construction

#107
20170316862
2017-11-02

Transformer with insertable high voltage conductor

#108
20170316861
2017-11-02

Transformer with hinged cooling module

#109
20170288572
2017-10-05

Oil type phase shift transformer for medium voltage inverter system

#110
20170279251
2017-09-28

Bullet-resistant electrical installation

#111
20170234762
2017-08-17

Leakage oil detector system and method

#112
20170200555
2017-07-13

Polyamide electrical insulation for use in liquid filled transformers

#113
20170148565
2017-05-25

Method and device for insulation of high-voltage generator tank

#114
20170089879
2017-03-30

Apparatus for measuring dissolved gas and oil immersed transformer having the same

#115
20170084375
2017-03-23

Temperature regulation of an inductor assembly

#116
20170032890
2017-02-02

Power transmission transformer with a noise inhibiting function

#117
20160322151
2016-11-03

Device comprising a high voltage apparatus including a fluid and equipment for detecting one or more physical properties of the fluid

#118
20160300655
2016-10-13

Site Replacement Of Internal Saturable Reactors Of A Rectifier Power Transformer

#119
20160293314
2016-10-06

Method to optimize operation of a transformer cooling system, the corresponding system and a method to determine the VFD capacity

#120
20160285354
2016-09-29

Distributed gap inductor potting apparatus and method of use thereof

#121
20160268035
2016-09-15

VEHICLE-MOUNTED TRANSFORMER

#122
20160247628
2016-08-25

Subsea transformer with seawater high resistance ground

#123
20160247621
2016-08-25

Stationary induction electric apparatus

#124
20160196915
2016-07-07

Isolation transformer, and X-ray generating apparatus and radiography system including the same

#125
20160195891
2016-07-07

METHODS AND SYSTEMS OF FIELD UPGRADEABLE TRANSFORMERS

#126
20160190950
2016-06-30

METHODS AND SYSTEMS OF FIELD UPGRADEABLE TRANSFORMERS

#127
20160129979
2016-05-12

Transformer in-situ inspection vehicle with a cage hull

#128
20160072284
2016-03-10

Subsea power distribution device and system

#129
20160020015
2016-01-21

High-voltage, high-frequency and high-power transformer

#130
20160005522
2016-01-07

Profiling transformer of power system

#131
20150376534
2015-12-31

Electrical discharge machining comprising the use of estolide compositions

#132
20150325332
2015-11-12

Enzymatically-degummed oil and uses thereof

#133
20150321534
2015-11-12

In-vehicle cooling device

#134
20150279509
2015-10-01

Oil-oil bushing and oil transformer

#135
20150243428
2015-08-27

METHODS AND SYSTEMS OF FIELD UPGRADEABLE TRANSFORMERS

#136
20150213940
2015-07-30

Static apparatus

#137
20150061803
2015-03-05

Transformer chamber for a wind turbine

#138
20150055298
2015-02-26

Self-cooling energy saver

#139
20150020572
2015-01-22

Method for diagnosing internal fault of oil-immersed transformer through composition ratio of dissolved gas in oil

#140
20150015355
2015-01-15

Oil-filled transformer switching frame

#141
20150014224
2015-01-15

High gradient, oil-cooled iron removal device with inner circulation

#142
20150007635
2015-01-08

Method for diagnosing internal fault of oil-immersed transformer through content ratios of dissolved gases

#143
20140354387
2014-12-04

Oil transformer insulation module

#144
20140327506
2014-11-06

OIL TRANSFORMER

#145
20140231726
2014-08-21

Method for suppressing copper sulfide generation in oil-filled electrical equipment

#146
20140225697
2014-08-14

High voltage insulation system and a high voltage inductive device comprising such an insulation system

#147
20140184371
2014-07-03

INSULATING MATERIAL CONTAINING POLY(PHENYLENE-1,3,4-OXADIAZOLE)

#148
20140133054
2014-05-15

SAFETY APPARATUS AND MONITORING METHOD FOR A POWER TRANSFORMER, AND RELATED POWER TRANSFORMER

#149
20140132382
2014-05-15

Inductor assembly

#150
20140132379
2014-05-15

INTEGRATED INDUCTOR ASSEMBLY

#151
20140132378
2014-05-15

Temperature regulation of an inductor assembly

#152
20140035710
2014-02-06

Fluid insulated high voltage coil

#153
20140022039
2014-01-23

Polyamide electrical insulation for use in liquid filled transformers

#154
20130340246
2013-12-26

Dielectric fluids comprising estolide compounds and methods of making and using the same

#155
20130319078
2013-12-05

Sealing apparatus for electrical apparatus oil sampler and conditioner for solid state sensors

#156
20130285781
2013-10-31

NANO DIELECTRIC FLUIDS

#157
20130058070
2013-03-07

Transformer chamber for a wind turbine, wind turbine structure component, wind turbine, and method for assembling a wind turbine

#158
20130026764
2013-01-31

Transformer for Wind Power Generation and Wind Power Generation System

#159
20130015415
2013-01-17

Heat-dissipating compositions comprising estolide compounds

#160
20120161912
2012-06-28

Stationary induction apparatus

#161
20120119505
2012-05-17

Transformer for Wind Power Station and/or Wind Power Generating Facilities Installed with Transformer for Wind Power Station

#162
20120099277
2012-04-26

Electric equipment in which heat being dissipated through superficial temperature maintaining member and exchanging fluid

#163
20120092110
2012-04-19

OIL TRANSFORMER INSULATION MODULE

#164
20120013427
2012-01-19

Transformer

#165
20120001712
2012-01-05

TRANSFORMERS

#166
20110309902
2011-12-22

Electric transformer with improved cooling system

#167
20110284530
2011-11-24

Double-wing pad-mounted transformer tank

#168
20110227685
2011-09-22

TRANSFORMER ASSEMBLY

#169
20110227683
2011-09-22

Induction device

#170
20110205007
2011-08-25

Transformer device

#171
20110140820
2011-06-16

Hyper-cooled liquid-filled transformer

#172
20110043999
2011-02-24

Apparatus and arrangement for housing voltage conditioning and filtering circuitry components for an electrostatic precipitator

#173
20110037550
2011-02-17

Solid insulation for fluid-filled transformer and method of fabrication thereof

#174
20100294562
2010-11-25

Electrical conductor for a high-current bushing

#175
20100109883
2010-05-06

Temperature monitoring system for power transformers submerged in oil

#176
20100012297
2010-01-21

Cooling system for large power transformers

#177
20090261933
2009-10-22

Vehicle transformer

#178
20090231075
2009-09-17

Oil cooling system, particularly for transformers feeding traction electric motors, transformer with said system and method for determining the cooling fluid flow in a cooling system

#179
20090180514
2009-07-16

TRANSFORMER AND A METHOD OF MONITORING AN OPERATION PROPERTY OF THE TRANSFORMER

#180
20090072940
2009-03-19

System for preventing rupture of transformer tank

#181
20080314077
2008-12-25

Cooler For Transformer Using Generation Cycle

#182
20080294297
2008-11-27

Control method for cooling an industrial plant

#183
20080164966
2008-07-10

Electrical component with a cooling circuit for underwater operation

#184
20070158341
2007-07-12

Transformer assembly for microwave oven, method for manufacturing the same, and microwave oven having the same

#185
20070102180
2007-05-10

Modular tank coupled to a self-assembly cabinet for ground level transformers

#186
20050247706
2005-11-10

Microwave oven

#187
18468604
2023-12-19

Immersion-cooled inductors in DC-to-DC converters and methods of operating thereof

#188
15782152
2019-02-26

Liquid containment device for bushing in liquid filled transformer

#189
15483361
2020-12-08

System, method and apparatus for transformer cooling