ClassID:

201624

H01F19/04 - CPC Classification

Classification description:

Fixed transformers or mutual inductances of the signal type Transformers or mutual inductances suitable for handling frequencies considerably beyond the audio range

Sub-classes:
Recent Application in this class:
#1
20260058052
2026-02-26

TRANSFORMER STRUCTURE

#2
20260011482
2026-01-08

TRANSFORMER

#3
20250364991
2025-11-27

GATE DRIVER, INSULATION MODULE, LOW-VOLTAGE CIRCUIT UNIT, AND HIGH-VOLTAGE CIRCUIT UNIT

#4
20250323643
2025-10-16

GATE DRIVER, INSULATION MODULE, LOW-VOLTAGE CIRCUIT UNIT, AND HIGH-VOLTAGE CIRCUIT UNIT

#5
20250266200
2025-08-21

TRANSFORMER STRUCTURE

#6
20240385224
2024-11-21

LOCKING CURRENT TRANSFORMER

#7
20240333238
2024-10-03

TRANSFORMER AND RADIO FREQUENCY MODULE

#8
20240212926
2024-06-27

TRANSFORMER STRUCTURE

#9
20240153691
2024-05-09

Isolating transformer

#10
20240036081
2024-02-01

CURRENT TRANSFORMER WITH CALIBRATION INFORMATION

#11
20230370064
2023-11-16

GATE DRIVER, INSULATION MODULE, LOW-VOLTAGE CIRCUIT UNIT, AND HIGH-VOLTAGE CIRCUIT UNIT

#12
20230361773
2023-11-09

GATE DRIVER, INSULATION MODULE, LOW-VOLTAGE CIRCUIT UNIT, AND HIGH-VOLTAGE CIRCUIT UNIT

#13
20230170897
2023-06-01

High-voltage power supply device

#14
20230154674
2023-05-18

Transformer structure

#15
20230081587
2023-03-16

Locking current transformer

#16
20220122757
2022-04-21

TRANSFORMER-BASED MATCHING NETWORK FOR ENHANCED IC DESIGN FLEXIBILITY

#17
20220093319
2022-03-24

MAGNETIC MODULE AND ELECTRICAL CONNECTOR INCLUDING THE MAGNETIC MODULE

#18
20220052657
2022-02-17

RF power amplifier with balun transformer

#19
20220013282
2022-01-13

Coil component

#20
20210104349
2021-04-08

Integrated transformer

#21
20210011057
2021-01-14

Current transformer with calibration information

#22
20210011056
2021-01-14

Current transformer with self-adjusting cores

#23
20200395158
2020-12-17

Switching transformers and electronic devices including the same

#24
20200366310
2020-11-19

Digital-to-analog converter

#25
20200266513
2020-08-20

Enhanced air core transmission lines and transformers

#26
20200105460
2020-04-02

Semiconductor element

#27
20200105459
2020-04-02

Semiconductor element

#28
20200075232
2020-03-05

Transformer structure

#29
20200075214
2020-03-05

Fractional transformer

#30
20190385781
2019-12-19

Ultra-high coupling factor monolithic transformers for integrated differential radio frequency amplifiers in system-on-chip devices

#31
20190245507
2019-08-08

Broadband power amplifier and matching network for multi-band millimeter-wave 5G communication

#32
20190237238
2019-08-01

Transformer structure

#33
20190229677
2019-07-25

Semiconductor device and method

#34
20190228896
2019-07-25

Isolating transformer

#35
20190221362
2019-07-18

Magnetic structures for low leakage inductance and very high efficiency

#36
20190214185
2019-07-11

Stacking inductor device

#37
20190207579
2019-07-04

High-power radio-frequency spiral-coil filter

#38
20190199401
2019-06-27

Electromagnetic emission detection, transceiver and system

#39
20190172628
2019-06-06

Balun and method for manufacturing same

#40
20190172621
2019-06-06

Isolated coupling structure

#41
20190149112
2019-05-16

Monolithic microwave integrated circuit having an overlay transformer and low impedance transmission lines

#42
20190096574
2019-03-28

High speed data transformer for patient isolation barrier

#43
20190051440
2019-02-14

High-frequency transformer and phase shifter

#44
20180350506
2018-12-06

Coil component and method of changing frequency characteristic thereof

#45
20180335461
2018-11-22

Two wire power and serial communication

#46
20180299519
2018-10-18

Magnetic resonance signal detector grid assemblies for magnetic resonance imaging

#47
20180241345
2018-08-23

Semiconductor Device and Method

#48
20180233264
2018-08-16

Coupled coils with lower far field radiation and higher noise immunity

#49
20180212296
2018-07-26

RF transceiver and RF transmitter of the same

#50
20180211755
2018-07-26

Common mode choke coil and electronic apparatus

#51
20180183396
2018-06-28

Monolithic microwave integrated circuit having an overlay transformer and low impedance transmission lines

#52
20180145653
2018-05-24

Coil device

#53
20180137967
2018-05-17

High Frequency Transformer

#54
20180131325
2018-05-10

Coupling structure for inductive device

#55
20180130595
2018-05-10

Inductor and method of manufacturing the same

#56
20180082778
2018-03-22

Broadside-coupled transformer

#57
20180062678
2018-03-01

Galvanic isolation circuit, corresponding system and method

#58
20180040413
2018-02-08

Semiconductor element

#59
20170346444
2017-11-30

Semiconductor device and method

#60
20170345539
2017-11-30

Inductance element, high-frequency transformer element, impedance conversion element, and antenna device

#61
20170336192
2017-11-23

Linear inductive position sensor for an angle measurement of a mechanical component in rotation

#62
20170330679
2017-11-16

Transformer for an electric connector

#63
20170301455
2017-10-19

Differential mode filter

#64
20170278623
2017-09-28

Coupled inductor structures

#65
20170257064
2017-09-07

Semiconductor device and method

#66
20170201223
2017-07-13

Integrated circuit fields canceller system

#67
20170194085
2017-07-06

Coil component and circuit board having the same

#68
20170169935
2017-06-15

Common mode choke coil

#69
20170149407
2017-05-25

IMPEDANCE MATCHING TRANSFORMER FOR HIGH-FREQUENCY TRANSMISSION LINE

#70
20170148560
2017-05-25

Coil component and board having the same

#71
20170133142
2017-05-11

Circuit protection device having noise filters

#72
20170117079
2017-04-27

Helical stacked integrated transformer and inductor

#73
20170076855
2017-03-16

Monolithic wideband trifilar transformer

#74
20170040967
2017-02-09

Transformer and wireless communication apparatus

#75
20170033737
2017-02-02

Coupling structure for inductive device

#76
20170032882
2017-02-02

Coil component and method of manufacturing the same

#77
20170032878
2017-02-02

Field regulator

#78
20170025212
2017-01-26

Inductive component and method for producing an inductive component

#79
20160380621
2016-12-29

Compact high voltage RF generator using a self-resonant inductor

#80
20160379744
2016-12-29

Coupling element for differential hybrid coupler

#81
20160149543
2016-05-26

Linear row array integrated power combiner for RF power amplifiers

#82
20160027571
2016-01-28

Ultra-high coupling factor monolithic transformers for integrated differential radio frequency amplifiers in system-on-chip devices

#83
20160021454
2016-01-21

Speaker module, display device having a speaker module, audio adjustment system and control method thereof, and synchronization method for playing multi-language sound

#84
20160020745
2016-01-21

Two-stage noise filter and electronic device including the same

#85
20150371759
2015-12-24

High efficiency on-chip 3D transformer structure

#86
20150318107
2015-11-05

Compact impedance transformer

#87
20150310980
2015-10-29

Integrated stacked transformer

#88
20150270054
2015-09-24

Integrated stacked transformer

#89
20150241529
2015-08-27

Loop coil with integrated balun for MR applications

#90
20150194253
2015-07-09

Device for delivering galvanic isolated digital video at high frequencies

#91
20150180440
2015-06-25

Impedance transformation circuit and wireless communication apparatus

#92
20150180228
2015-06-25

Suppression of transients in communications across an isolation barrier

#93
20150178434
2015-06-25

Method of designing impedance transformation circuit

#94
20150162126
2015-06-11

Common mode choke coil and manufacturing method thereof

#95
20150155769
2015-06-04

METHOD OF DI/DT CURRENT SENSING

#96
20150070073
2015-03-12

Single-chip multi-domain galvanic isolation device and method

#97
20150028982
2015-01-29

High efficiency on-chip 3D transformer structure

#98
20150028979
2015-01-29

High efficiency on-chip 3D transformer structure

#99
20150024554
2015-01-22

Chip to package interface

#100
20150015356
2015-01-15

Compact magnetics assembly

#101
20140357208
2014-12-04

Radio frequency transmitter, power combiners and wireless communication unit therefor

#102
20140357206
2014-12-04

Radio frequency transmitter, power combiners and terminations therefor

#103
20140354371
2014-12-04

Radio frequency transmitter, power combiners and terminations therefor

#104
20140266505
2014-09-18

Device for EMC filtering on a printed circuit

#105
20140225699
2014-08-14

Transformer

#106
20140224998
2014-08-14

RF transformer

#107
20140176287
2014-06-26

Laminated common mode choke coil and high frequency component

#108
20140152398
2014-06-05

Multilayer power splitter

#109
20140138792
2014-05-22

Hybrid transformer structure on semiconductor devices

#110
20140125445
2014-05-08

Common mode filter and method of manufacturing the same

#111
20140104025
2014-04-17

High frequency transformer

#112
20140103736
2014-04-17

Signal transmission device and switching power supply

#113
20140098569
2014-04-10

Method and apparatus for digital isolation using planar magnetic circuits

#114
20140087673
2014-03-27

CMOS based TX/RX switch

#115
20140087672
2014-03-27

CMOS based RF antenna switch

#116
20140087671
2014-03-27

Radio frequency front end module circuit incorporating an efficient high linearity power amplifier

#117
20140085008
2014-03-27

Envelope tracking signal generator incorporating trim cell

#118
20140085006
2014-03-27

Efficient linear integrated power amplifier incorporating low and high power operating modes

#119
20140085002
2014-03-27

Two dimensional quad integrated power combiner for RF power amplifiers

#120
20140085001
2014-03-27

Linear row array integrated power combiner for RF power amplifiers

#121
20140084880
2014-03-27

DC-DC converter incorporating trim cell

#122
20140084700
2014-03-27

RF power amplifier splitter

#123
20140078014
2014-03-20

Antenna device and communication terminal apparatus

#124
20140070420
2014-03-13

Chip to package interface

#125
20140065980
2014-03-06

Impedance conversion circuit and communication terminal apparatus

#126
20140062817
2014-03-06

Impedance-matching switching circuit, antenna device, high-frequency power amplifying device, and communication terminal apparatus

#127
20140055209
2014-02-27

Front-end circuit and communication terminal apparatus

#128
20130335182
2013-12-19

Radio frequency transmission line transformer

#129
20130322657
2013-12-05

Parametric transducer system and related methods

#130
20130271240
2013-10-17

Through-hole via inductor in a high-frequency device

#131
20130181803
2013-07-18

Wideband multilayer transmission line transformer

#132
20130169402
2013-07-04

Compact planar VHF/UHF power impedance transformer

#133
20130147595
2013-06-13

COIL PARTS

#134
20130147592
2013-06-13

Coil parts and method of manufacturing the same

#135
20130127434
2013-05-23

Coupled Inductor Arrays And Associated Methods

#136
20130082814
2013-04-04

MULTI-WINDING MAGNETIC STRUCTURES

#137
20130044529
2013-02-21

Control system for a power supply having a first half-bridge leg and a second half-bridge leg

#138
20130043964
2013-02-21

High-frequency transformer

#139
20130010434
2013-01-10

Network device and communication module

#140
20130009741
2013-01-10

Integrated circuit transformer

#141
20120299682
2012-11-29

Symmetric differential inductor structure

#142
20120274434
2012-11-01

Integrated transformer

#143
20120274431
2012-11-01

Transformer having high degree of coupling, electronic circuit, and electronic device

#144
20120262177
2012-10-18

Balanced-to-unbalanced transformer for converting a symmetrical high-frequency signal into an asymmetrical high-frequency signal

#145
20120194403
2012-08-02

Integrated transformer with multiple transformation ratios

#146
20120154096
2012-06-21

Transformer

#147
20120148082
2012-06-14

Parametric transducers and related methods

#148
20120148070
2012-06-14

Parametric signal processing systems and methods

#149
20120147707
2012-06-14

Parametric transducer systems and related methods

#150
20120147578
2012-06-14

Radio-frequency packaging with reduced RF loss

#151
20120139640
2012-06-07

Bond wire transformer

#152
20120081203
2012-04-05

System and method for multiple band transmission

#153
20120081202
2012-04-05

High speed transformer

#154
20120068691
2012-03-22

Di/dt current sensing

#155
20120056680
2012-03-08

Three dimensional inductor, transformer and radio frequency amplifier

#156
20120001715
2012-01-05

Transformer assembly for a magnetic resonance imaging system

#157
20110304422
2011-12-15

Transformer assembly for a magnetic resonance imaging system

#158
20110279214
2011-11-17

High frequency semiconductor transformer

#159
20110278946
2011-11-17

Apparatus for providing power to a multipole in a mass spectrometer

#160
20110278917
2011-11-17

Apparatus and method for coupling RF and AC signals to provide power to a multipole in a mass spectrometer

#161
20110148542
2011-06-23

Transformer and method for using same

#162
20110109417
2011-05-12

POWER TRANSFORMER FOR RADIOFREQUENCY SIGNALS

#163
20110084765
2011-04-14

Three dimensional inductor and transformer

#164
20110050292
2011-03-03

Coreless printed-circuit-board (PCB) transformers and operating techniques therefor

#165
20110043316
2011-02-24

Overlapping compact multiple transformers

#166
20110037555
2011-02-17

Transformer-based circuit with compact and/or symmetrical layout design

#167
20100328011
2010-12-30

Mode-switching transformer

#168
20100321961
2010-12-23

Insulation transformer and key input circuit having the same

#169
20100301987
2010-12-02

MILLIMETER WAVE TRANSFORMER WITH A HIGH TRANSFORMATION FACTOR AND A LOW INSERTION LOSS

#170
20100295646
2010-11-25

Manufacture and use of planar embedded magnetics as discrete components and in integrated connectors

#171
20100277253
2010-11-04

RF signal combiner/splitter and related methods

#172
20100271160
2010-10-28

Balun transformer using a drum-shaped core

#173
20100270999
2010-10-28

Transformer power splitter having primary winding conductors magnetically coupled to secondary winding conductors and configured in topology including series connection and parallel connection

#174
20100259349
2010-10-14

Magnetic Film Enhanced Inductor

#175
20100253461
2010-10-07

Planar transformer with boards

#176
20100237974
2010-09-23

Impedance transformer and applications thereof

#177
20100214052
2010-08-26

Communications transformer

#178
20100146782
2010-06-17

MINIATURE CIRCUITRY AND INDUCTIVE COMPONENTS AND METHODS FOR MANUFACTURING SAME

#179
20100127814
2010-05-27

MINIATURE CIRCUITRY AND INDUCTIVE COMPONENTS AND METHODS FOR MANUFACTURING SAME

#180
20100068998
2010-03-18

Wireless interface

#181
20100039107
2010-02-18

MAGNETIC CARRIER MANIPULATION AND DETECTION USING A NANOMETER SCALE TRANSFORMER

#182
20100020448
2010-01-28

Galvanic isolator

#183
20090290332
2009-11-26

Lighting system

#184
20090251273
2009-10-08

Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components without requiring additional windings

#185
20090243782
2009-10-01

High voltage hold-off coil transducer

#186
20090219127
2009-09-03

Balun transformer using a drum-shaped core

#187
20090195324
2009-08-06

Balun transformer with improved harmonic suppression

#188
20090179724
2009-07-16

Power Inductor

#189
20090085705
2009-04-02

Transformer

#190
20090015364
2009-01-15

Miniature circuitry and inductive components and methods for manufacturing same

#191
20090002111
2009-01-01

Wideband planar transformer

#192
20080309429
2008-12-18

MONOLITHIC INTEGRATED INDUCTOR

#193
20080303621
2008-12-11

Common mode choke coil

#194
20080238211
2008-10-02

SOLID-STATE MICROSECOND CAPACITANCE CHARGER FOR HIGH VOLTAGE AND PULSED POWER

#195
20080136577
2008-06-12

Apparatus and method for winding an energy transfer element core

#196
20080062727
2008-03-13

Laminated balun transformer

#197
20080048816
2008-02-28

Inductor element and integrated electronic component

#198
20080017404
2008-01-24

Miniature circuitry and inductive components and methods for manufacturing same

#199
20070296537
2007-12-27

Impedance transformer and applications thereof

#200
20070294888
2007-12-27

Methods for manufacturing miniature circuitry and inductive components

#201
20070290783
2007-12-20

Miniature circuitry and inductive components and methods for manufacturing same

#202
20070279035
2007-12-06

Transformer for impedance-matching power output of RF amplifier to gas-laser discharge

#203
20070128821
2007-06-07

System and method for implementing transformer on package substrate

#204
20070126542
2007-06-07

Transformer

#205
20070090913
2007-04-26

Multi-loop type transformer

#206
20070035372
2007-02-15

Surface mount transformer

#207
20060284716
2006-12-21

Coil component

#208
20060276155
2006-12-07

Signal transmission arrangement having a transformer and a receiver circuit

#209
20060273418
2006-12-07

3-D inductor and transformer devices in MRAM embedded integrated circuits

#210
20060170527
2006-08-03

Integrated transformer structure and method of fabrication

#211
20060152322
2006-07-13

Miniature circuitry and inductive components and methods for manufacturing same

#212
20060087394
2006-04-27

Area efficient inductors

#213
20060081804
2006-04-20

Non-refillable valve

#214
20060055495
2006-03-16

Planar transformer

#215
20050168312
2005-08-04

Transformer

#216
20050156699
2005-07-21

Coreless printed-circuit-board (PCB) transformers and operating techniques therefor

#217
16599028
2020-10-27

Inductive radio frequency power sampler

#218
16369262
2020-03-31

Digital-to-analog converter

#219
16192223
2020-03-24

Resonant transmission line to deliver precision RF voltage

#220
16135238
2019-09-03

Wireless communication device with efficient broadband matching network and related methods