ClassID:

201722

H01F27/402 - CPC Classification

Classification description:

Details of transformers or inductances, in general; Structural association with built-in electric component, e.g. fuse Association of measuring or protective means

Sub-classes:
Recent Application in this class:
#1
20260140147
2026-05-21

HIGH-BANDWIDTH CURRENT-sensing EXTRACTION- COIL SENSOR

#2
20260094758
2026-04-02

TRANSFORMER APPARATUS

#3
20260056236
2026-02-26

NTERFACE TEST DEVICE WITH LOW POWER SWITCH

#4
20260045408
2026-02-12

CORE ASSEMBLIES FOR MAGNETIC SATURATION DETECTOR WITHOUT REQUIREMENT FOR DC BIAS CURRENT

#5
20260020209
2026-01-15

AN ELECTROSTATIC SHIELDING ELEMENT, AN ELECTROSTATIC SHIELDING ARRANGEMENT AND A TRANSFORMER ARRANGEMENT COMPRISING THE ELECTROSTATIC SHIELDING ARRANGEMENT

#6
20250378990
2025-12-11

TECHNOLOGIES FOR PREVENTING THE EXPLOSION OF ELECTRICAL TRANSFORMERS

#7
20250369819
2025-12-04

LEAK DETECTION IN TRANSFORMERS

#8
20250342993
2025-11-06

SUPERCONDUCTOR MAGNET SYSTEMS AND METHODS FOR GENERATING MAGNETIC FIELDS

#9
20250292984
2025-09-18

CURRENT LIMITING FUSE ASSEMBLY, TRANSFORMER ASSEMBLY COMPRISING A CURRENT LIMITING FUSE ASSEMBLY, AND SHIELDING ARRANGEMENT CONFIGURED TO ELECTRICALLY AND MECHANICALLY SHIELD A CURRENT LIMITING FUSE

#10
20250283787
2025-09-11

Dissolved Gas Analysis System and Method

#11
20250182959
2025-06-05

OPTICALLY INDICATING THERMAL ADVISORY

#12
20250172635
2025-05-29

SYSTEM COMPRISING A TRANSFORMER

#13
20250167661
2025-05-22

SEMICONDUCTOR TRANSFORMER AND MODULAR HIGH-VOLTAGE POWER DEVICE

#14
20250167588
2025-05-22

TRANSFORMER MONITORING MANAGEMENT SYSTEM

#15
20250149238
2025-05-08

SYSTEMS AND METHODS FOR VARIABLE DIFFERENTIAL TRANSFORMERS SECONDARIES WITH SINGLE RAIL BIAS

#16
20250095912
2025-03-20

Wireless Power Transfer Thin Profile Coil Assembly

#17
20250095911
2025-03-20

FUSE TRIPPING ACCELERATION ARRANGEMENT, CURRENT TRANSFORMER ARRANGEMENT AND ENERGY STORAGE SYSTEM

#18
20250093224
2025-03-20

MONITORING SYSTEM TO DETECT FLUID LEAKS IN AN ELECTRICAL APPARATUS

#19
20250014813
2025-01-09

REACTOR, CONVERTER, AND POWER CONVERSION DEVICE

#20
20250014806
2025-01-09

COMMON MODE FILTERING DEVICE AND CHARGING SYSTEM FOR ELECTRIC OR HYBRID VEHICLES

#21
20240412921
2024-12-12

ENHANCED TRANSFORMER FAULT FORECASTING BASED ON DISSOLVED GASES CONCENTRATION AND THEIR RATE OF CHANGE

#22
20240387101
2024-11-21

Ballistic Cape and Array System and Method Using Indexed Column Vector

#23
20240379274
2024-11-14

TRANSFORMER

#24
20240355524
2024-10-24

Universal Cap for Arrester Brackets

#25
20240288512
2024-08-29

Transformer Diagnostics System

#26
20240258024
2024-08-01

WIRELESS TRANSMISSIONS THROUGH A TRANSFORMER TANK

#27
20240242881
2024-07-18

INTEGRATED MAGNETIC ELEMENT

#28
20240234025
2024-07-11

Inductor with Temperature Detection

#29
20240145165
2024-05-02

CURRENT TRANSFORMER WITH IMPROVED PERFORMANCE

#30
20240120149
2024-04-11

A COIL UNIT, AND ASSOCIATED METHODS

#31
20230395317
2023-12-07

MULTI-COIL INDUCTION APPARATUS

#32
20230386724
2023-11-30

TEMPERATURE INSENSITIVE INDUCTOR

#33
20230326651
2023-10-12

HOUSING PART, ELECTRICAL SYSTEM AND OPERATING METHOD

#34
20230317366
2023-10-05

Composite electronic component

#35
20230317352
2023-10-05

ELECTRONIC COMPONENT

#36
20230296694
2023-09-21

OPTICAL SENSING METHODS AND SYSTEMS FOR TRANSFORMERS, AND THE CONSTRUCTION THEREOF

#37
20230290566
2023-09-14

High voltage instrument transformer and method for partial discharge recognition

#38
20230273270
2023-08-31

Method for determining the overload capacity of a high-voltage device

#39
20230266378
2023-08-24

Fault gas detection system for a liquid filled high voltage transformer

#40
20230238198
2023-07-27

External switch coupler for pad-mounted transformers

#41
20230221383
2023-07-13

Method for The Networked Monitoring of At Least One Transformer

#42
20230178297
2023-06-08

Electromagnetic device equipped with at least one wireless sensor

#43
20230170137
2023-06-01

Embedded temperature sensor solution for power inductor

#44
20230147165
2023-05-11

WIRELESS TRANSMISSIONS THROUGH A TRANSFORMER TANK

#45
20230144327
2023-05-11

DISTRIBUTION TRANSFORMER SYSTEM AND METHODS THEREOF

#46
20230131583
2023-04-27

METHOD AND SYSTEM FOR BREATHER HEALTH ASSESSMENT FOR A TRANSFORMER BREATHER

#47
20230124638
2023-04-20

Wireless power transmission apparatus

#48
20230049051
2023-02-16

Inductor device that can resist external interference and adjust inductance value and quality factor of inductor

#49
20230014981
2023-01-19

Equipment and method for identifying a fault in the windings of a distribution transformer

#50
20230011472
2023-01-12

TRANSFORMER ARRANGEMENT AND METHOD FOR ELECTRICALLY CONNECTING AND DISCONNECTING A TRANSFORMER

#51
20230006436
2023-01-05

Protective relay and method for detecting disconnection of protective relay

#52
20220359117
2022-11-10

CORE ASSEMBLIES FOR MAGNETIC SATURATION DETECTOR WITHOUT REQUIREMENT FOR DC BIAS

#53
20220344093
2022-10-27

Transformer arrangement

#54
20220328233
2022-10-13

Electric transformer assembly, method for determining a thermal state of an electric transformer, and determination device

#55
20220302738
2022-09-22

ADAPTER AND CHARGING METHOD

#56
20220275790
2022-09-01

Wind turbine transformer system

#57
20220271527
2022-08-25

Transformer overcurrent protection

#58
20220270841
2022-08-25

Electrical assembly comprising blown fuse indication system

#59
20220262562
2022-08-18

Transformer monitor

#60
20220254565
2022-08-11

Control system for transformer protection system

#61
20220254564
2022-08-11

METHOD FOR MEASURING A QUANTITY OF LIQUID IN A LIQUID-INSULATED ELECTRICAL COMPONENT, LIQUID-INSULATED ELECTRICAL COMPONENT AND RAILROAD VEHICLE HAVING THE SAME

#62
20220223338
2022-07-14

Isolation apparatus and method of a fault segment in a transformer loop

#63
20220181076
2022-06-09

Inductor temperature sensor

#64
20220148800
2022-05-12

Distribution transformer monitor

#65
20220148799
2022-05-12

Alert system for transformer

#66
20220102049
2022-03-31

Electric transformer assembly, method for determining a thermal state of an electric transformer, and determination device

#67
20220102048
2022-03-31

Static electrical device assembly comprising heat exchanger system

#68
20220037924
2022-02-03

Efficiency gains through magnetic field management

#69
20220021203
2022-01-20

Apparatus and method for determining transformer state based on correction of dissolved gas data

#70
20220003828
2022-01-06

Smart current transformer system

#71
20210319948
2021-10-14

Expandable turret for electrical equipment

#72
20210304957
2021-09-30

Wound component

#73
20210270797
2021-09-02

Systems and methods for dissolved gas analysis

#74
20210265106
2021-08-26

Fuse block mounting bracket for transformer

#75
20210257144
2021-08-19

COOLING ARRANGEMENT FOR A HIGH VOLTAGE POWER DEVICE

#76
20210241971
2021-08-05

Sensformer

#77
20210217565
2021-07-15

External switch coupler for pad-mounted transformers

#78
20210190604
2021-06-24

Continuously transposed cable with an integrated sensing device

#79
20210175007
2021-06-10

Measuring method and high-voltage transducer with clean air

#80
20210159691
2021-05-27

Systems and methods for improving restricted earth fault protection

#81
20210142941
2021-05-13

Power monitoring and distributing systems

#82
20210131876
2021-05-06

Apparatus, system and method for temperature measurement for dry-type transformer

#83
20210123970
2021-04-29

Circuit containing a transformer and corresponding method

#84
20210118610
2021-04-22

Integrated magnetic element

#85
20210109164
2021-04-15

Equipment failure detection in an electric power system

#86
20210104846
2021-04-08

Power connector with integrated power monitoring

#87
20210065970
2021-03-04

System for sensor utilization in a transformer cooling circuit

#88
20210048319
2021-02-18

Integrated ball screw linear actuator

#89
20210043373
2021-02-11

Distribution transformer system and methods thereof

#90
20210020360
2021-01-21

Internal thermal fault diagnosis method of oil-immersed transformer based on deep convolutional neural network and image segmentation

#91
20210020355
2021-01-21

Dissolved gas analysis devices, systems, and methods

#92
20210018554
2021-01-21

Transformer assembly with medium frequency transformers

#93
20200411233
2020-12-31

Temperature based fluid level estimation in an electrical device

#94
20200393521
2020-12-17

Smart grid distribution transformer

#95
20200381175
2020-12-03

Static electric induction apparatus comprising a winding and a sensor system for monitoring the temperature in the winding

#96
20200378836
2020-12-03

Wound electrical component with printed electronics sensor

#97
20200321772
2020-10-08

Network service and transformer safety protector

#98
20200318933
2020-10-08

BULLET-PROOF ELECTRICAL DEVICE

#99
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

#100
20200312538
2020-10-01

Method for determining the overload capacity of a high-voltage device

#101
20200258661
2020-08-13

Electrical device having an insertable high-voltage bushing

#102
20200217903
2020-07-09

Optical sensing methods and systems for power applications, and the construction thereof

#103
20200212667
2020-07-02

Irrigation controller having transformer with resettable fuse

#104
20200211761
2020-07-02

Dissolved gas analysis devices, systems, and methods

#105
20200203054
2020-06-25

POWER SUPPLY PLATFORM SUPPORTING INTEGRATED TRANSFORMER AND DISCONNECT

#106
20200176175
2020-06-04

Reactor

#107
20200176169
2020-06-04

Two part clamping and suspension mechanism for a split toroidal current transformer

#108
20200168393
2020-05-28

Wireless power transfer thin profile coil assembly

#109
20200153229
2020-05-14

System for detecting and limiting the effects of loss of insulation of an electrical transformer

#110
20200126716
2020-04-23

Reactor

#111
20200114393
2020-04-16

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

#112
20200111595
2020-04-09

Losses reduction for electrical power distribution

#113
20200098513
2020-03-26

Systems and methods for monitoring components in a power transformer or the like

#114
20200090861
2020-03-19

Saturation prevention of current transformer

#115
20200058439
2020-02-20

Hardened inductive device and systems and methods for protecting the inductive device from catastrophic events

#116
20200033280
2020-01-30

Transformer hydrogen gas monitoring system, device, and method

#117
20200018783
2020-01-16

Method and device for determining capacitive component parameters

#118
20190378649
2019-12-12

Hardened inductive device and systems and methods for protecting the inductive device from catastrophic events

#119
20190378648
2019-12-12

Transformer power management controllers and transformer power management methods

#120
20190358728
2019-11-28

Method and Apparatus for Providing Auxiliary and Welding Type Power With Thermal Protection

#121
20190355513
2019-11-21

Explosion-proof inductive voltage transformer

#122
20190319025
2019-10-17

ESD protection element

#123
20190318862
2019-10-17

Electrical device having a plurality of cooling units

#124
20190312513
2019-10-10

Magnetic sensing scheme for voltage regulator circuit

#125
20190304657
2019-10-03

ELECTRIC TRANSFORMER

#126
20190287718
2019-09-19

Phase and zero-sequence current sensing modules mounted together on a cable bushing

#127
20190280437
2019-09-12

Power connector with integrated power monitoring

#128
20190272948
2019-09-05

Coil component

#129
20190259521
2019-08-22

Electrical device having encapsulated spaces cooled with different intensity

#130
20190241087
2019-08-08

Thermal feedback for power transfer optimization

#131
20190214178
2019-07-11

Losses reduction for electrical power distribution

#132
20190206605
2019-07-04

Cover for a distribution transformer filled with a dielectric liquid

#133
20190204269
2019-07-04

Inductive humidity sensor and method

#134
20190195697
2019-06-27

THERMOMETER

#135
20190173275
2019-06-06

Voltage transformer

#136
20190156998
2019-05-23

Current transformer module and power supply device including the same

#137
20190148063
2019-05-16

COMPLEX ELECTRONIC COMPONENT

#138
20190148054
2019-05-16

Thermal management system for vehicle power inductor assembly

#139
20190140611
2019-05-09

Filter with inductive capacitive reactor for installed units

#140
20190131064
2019-05-02

Energy saving device with inductive capacitive reactor for high amperage uses

#141
20190113369
2019-04-18

Resin impregnation detection device, coil for rotating machine, and method for impregnating and molding resin of coil for rotating machine

#142
20190097278
2019-03-28

Method and electronic device for detecting battery swelling

#143
20190081517
2019-03-14

SENSOR MODULES FOR WIRELESS CHARGING MATS

#144
20190081473
2019-03-14

Control method for protecting primary windings of wind turbine transformers

#145
20190072437
2019-03-07

Distributed sensing of electromagnetic components using optical fiber based methods

#146
20190066902
2019-02-28

Press-clamp with clamping force sensor for electric transformer winding

#147
20190057810
2019-02-21

Reactor

#148
20190051443
2019-02-14

Transformer systems and methods for operating a transformer system

#149
20190043663
2019-02-07

Folded MRI safe coil assembly

#150
20190041446
2019-02-07

Optical sensing methods and systems for transformers, and the construction thereof

#151
20190027304
2019-01-24

REACTOR

#152
20190019614
2019-01-17

Reactor having temperature sensor attached to terminal base unit

#153
20190013144
2019-01-10

Reactor

#154
20190008535
2019-01-10

Sound wave treatment device

#155
20180366268
2018-12-20

Reactor having iron cores and coils

#156
20180350515
2018-12-06

Electric equipment

#157
20180348283
2018-12-06

Method, system and assembly for determining a reduction of remaining service lifetime of an electrical device during a specific time period of operation of the electrical device

#158
20180323004
2018-11-08

Self-clamping structure for solving short-circuit resistance problem of amorphous alloy transformers

#159
20180315546
2018-11-01

Transformer system and system for measuring pressure in a transformer tank

#160
20180261372
2018-09-13

Current converter with interchangeable head

#161
20180259451
2018-09-13

Dissolved gas analysis devices, systems, and methods

#162
20180217196
2018-08-02

Method for classifying the status of the winding clamping of a power transformer

#163
20180191146
2018-07-05

Thermal protector

#164
20180182527
2018-06-28

Device

#165
20180143236
2018-05-24

Switch apparatus, test apparatus and method for operating a switch apparatus for a measuring device for a transformer

#166
20180128673
2018-05-10

Enhanced optical condition monitoring system for power transformer and method for operating power transformer

#167
20180114630
2018-04-26

Electrical device with dynamic winding pressing

#168
20180095041
2018-04-05

Optical sensing system for determining hydrogen partial pressure

#169
20180061562
2018-03-01

INDUCTOR AND PROTECTION CIRCUIT

#170
20180059087
2018-03-01

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

#171
20170372837
2017-12-28

Attractor for PMA wireless charging type wireless power reception module and manufacturing method therefor, and wireless power reception module having same

#172
20170370794
2017-12-28

Rapid pressure rise detection and management system

#173
20170368946
2017-12-28

Power reception apparatus, vehicle, and detection method

#174
20170352476
2017-12-07

Reactor

#175
20170346279
2017-11-30

Complex electronic component

#176
20170338035
2017-11-23

Coiled elements comprising a temperature measuring device

#177
20170336461
2017-11-23

INTERNAL TRANSFORMER COMPOSITE-DEFECT FUZZY DIAGNOSTIC METHOD BASED ON GAS DISSOLVED IN OIL

#178
20170331233
2017-11-16

Power connector with integrated power monitoring

#179
20170307449
2017-10-26

Magnetic based temperature sensing for electrical transmission line

#180
20170278627
2017-09-28

EXTERNALLY MOUNTED FUSE BOX ON A LIQUID-FILLED TRANSFORMER AND METHOD FOR SERVICING

#181
20170278626
2017-09-28

Composite electronic component

#182
20170184457
2017-06-29

Reactor

#183
20170141548
2017-05-18

Subsea power distribution device and system

#184
20170133836
2017-05-11

Method and system for protecting transformers from internal fire

#185
20170125143
2017-05-04

Chip resistor and methods of producing the same

#186
20170104367
2017-04-13

SYSTEMS AND METHODS FOR AN ELECTRICAL POWER CONNECTOR

#187
20170101918
2017-04-13

Fan cooled ignition coil method and apparatus

#188
20170076842
2017-03-16

Chip component and method of producing the same

#189
20170047734
2017-02-16

Docking module for a current transformer for preventing overvoltages and a current transformer having a docking module

#190
20170045556
2017-02-16

Energy monitoring current transformer enclosure

#191
20170030420
2017-02-02

Electromagnetic clutch and method for manufacturing same

#192
20170026018
2017-01-26

Noise filter implementation structure

#193
20170012458
2017-01-12

Wireless charging board and wireless charging device

#194
20170011612
2017-01-12

System and method for monitoring and controlling a transformer

#195
20160370416
2016-12-22

Method, system and assembly for determining a reduction of remaining service lifetime of an electrical device during a specific time period of operation of the electrical device

#196
20160351327
2016-12-01

ESD protection device and common mode choke coil with built-in ESD protection device

#197
20160334245
2016-11-17

Variable differential transformer position sensor with a trapezoidal primary coil

#198
20160285312
2016-09-29

Wireless power alignment guide

#199
20160282500
2016-09-29

Sensor and method for foreign object detection in induction electric charger

#200
20160247622
2016-08-25

Fault tolerant subsea transformer

#201
20160217941
2016-07-28

Externally mounted fuse box on a liquid-filled transformer and method for servicing

#202
20160217921
2016-07-28

Reactor

#203
20160148742
2016-05-26

Burst protector for high-voltage device

#204
20160129520
2016-05-12

Method and apparatus for providing auxiliary and welding type power with thermal protection

#205
20160124024
2016-05-05

Self-correcting current transformer system

#206
20160118186
2016-04-28

Hardened inductive device and systems and methods for protecting the inductive device from catastrophic events

#207
20160099102
2016-04-07

ELECTRONIC COMPONENT

#208
20160069750
2016-03-10

Thermal well for transformer and methods

#209
20160064953
2016-03-03

Power feeding device and power receiving device for contactless power transmission

#210
20160064142
2016-03-03

TRANSFORMER WITH INTEGRATED FLUID FLOW SENSOR

#211
20160055965
2016-02-25

Stationary Induction Electric Machine

#212
20160055964
2016-02-25

COMMON MODE FILTER AND MANUFACTURING METHOD THEREOF

#213
20160047765
2016-02-18

Method and apparatus for leakage monitoring for oil-immersed electrical transformers

#214
20160016478
2016-01-21

Foreign matter detection device and method for wireless power supply device

#215
20160012965
2016-01-14

Sensing a switching-power-supply phase current

#216
20160011614
2016-01-14

Sensing a switching-power-supply phase current

#217
20150377940
2015-12-31

Coil architecture for inductive sensors

#218
20150348701
2015-12-03

Conductivity and impedance sensor

#219
20150332844
2015-11-19

Inductor and converter having the same

#220
20150325359
2015-11-12

Analytical instrument inductors and methods for manufacturing same

#221
20150310982
2015-10-29

Method for producing a coil and electronic device

#222
20150294784
2015-10-15

Power transmission coil

#223
20150287525
2015-10-08

Reactor, converter, and power conversion device

#224
20150279553
2015-10-01

System and method for tuning transformers

#225
20150279542
2015-10-01

Current converter with interchangeable head

#226
20150272471
2015-10-01

Devices and methods for detection of slippage of magnetic coupling in implantable medical devices

#227
20150270699
2015-09-24

Transformer protection system

#228
20150241249
2015-08-27

SENSOR SYSTEM FOR DETECTING POSITION OF TARGET MEMBER

#229
20150235759
2015-08-20

High voltage transformer having a sensor system, method for monitoring physical characteristic variables of a high voltage transformer and sensor system for monitoring physical characteristic variables

#230
20150219695
2015-08-06

Power inductor and method for implementing shunting measurement through inductor winding

#231
20150206650
2015-07-23

Current transformer having an automatic short-circuit device

#232
20150162119
2015-06-11

Coil and manufacturing method for same, and reactor

#233
20150145530
2015-05-28

Coil unit and apparatus for detecting foreign matter

#234
20150028827
2015-01-29

Transformer core flux control for power management

#235
20150007635
2015-01-08

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

#236
20140375406
2014-12-25

Circuit protection device and method of manufacturing the same

#237
20140368965
2014-12-18

Chip component and method of producing the same

#238
20140368059
2014-12-18

TRANSFORMER, ELECTRONIC APPARATUS, AND METHOD FOR CONTROLLING TRANSFORMER

#239
20140347153
2014-11-27

Power-electronic-type fault current limiter using magnetic turn-off principle

#240
20140292459
2014-10-02

Magnetic device having integrated current sensing element and methods of assembling same

#241
20140292458
2014-10-02

Magnetic device having integrated current sensing element and methods of assembling same

#242
20140292456
2014-10-02

Reactor

#243
20140273261
2014-09-18

Sensor assembly and method for sensing status condition of electrical equipment

#244
20140232384
2014-08-21

Magnetic core flux sensor

#245
20140232383
2014-08-21

Magnetic core flux sensor

#246
20140167785
2014-06-19

Method and apparatus to detect and measure current and transfer charge

#247
20140133204
2014-05-15

Reactor, converter, and power converter apparatus

#248
20140133054
2014-05-15

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

#249
20140091895
2014-04-03

Disconnector for electric power equipment filled with dielectric liquid

#250
20140085041
2014-03-27

Reactor

#251
20140085026
2014-03-27

Reactor, converter, and power converter apparatus

#252
20140049880
2014-02-20

Temperature sensing system for power electronic device

#253
20140049262
2014-02-20

Apparatus and method for safe state retention

#254
20140036958
2014-02-06

Hybrid mechanical and electrical transformer monitor

#255
20140035709
2014-02-06

Dry transformer heater

#256
20140022085
2014-01-23

Method and apparatus of sensing and indicating an open current transformer secondary

#257
20140002222
2014-01-02

Clamping force sensor assembly for monitoring transformer degradation

#258
20130328553
2013-12-12

Devices and methods for detection of slippage of magnetic coupling in implantable medical devices

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Clamping force sensor assembly for monitoring transformer degradation

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Thermal modelling of a transformer

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Portable transformer with safety interlock

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Test arrangement for AC testing of electrical high voltage components

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Transformer and transformer device

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Current sensor with laminated magnetic core

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