ClassID:

201631

H01F21/04 - CPC Classification

Classification description:

Variable inductances or transformers of the signal type continuously variable, e.g. variometers by relative movement of turns or parts of windings

Recent Application in this class:
#1
20250149227
2025-05-08

ROTARY VARIABLE DIFFERENTIAL TRANSFORMER

#2
20240029933
2024-01-25

Adjustable inductor and method of using the same

#3
20230326647
2023-10-12

Rotary variable differential transformer

#4
20230079125
2023-03-16

Adjustable inductor and method of using the same

#5
20230050072
2023-02-16

Rotor for a hover-capable aircraft

#6
20210407722
2021-12-30

MAGNETIC SHELL AND MAGNETIC DEVICE

#7
20200403595
2020-12-24

Adjustable inductor and method of using the same

#8
20200373056
2020-11-26

Rotary variable differential transformer

#9
20200240813
2020-07-30

Redundant VDT with DC interface

#10
20190267175
2019-08-29

VDT with high permeability shield

#11
20190139691
2019-05-09

Inductance adjusting device

#12
20170331387
2017-11-16

System and method of implementing an electronic brushless variable transformer for providing a variable AC output

#13
20170330772
2017-11-16

Plasma processing apparatus

#14
20170092419
2017-03-30

Magnetically permeable core and an inductive power transfer coil arrangement

#15
20170089733
2017-03-30

Integrated micro actuator and LVDT for high precision position measurements

#16
20170019086
2017-01-19

Tunable reactance devices, and methods of making and using the same

#17
20160372247
2016-12-22

Variable inductance inductor and variable inductance inductor module

#18
20160191009
2016-06-30

Tunable resonator

#19
20160141099
2016-05-19

Method for manufacturing wireless power-transmitting device, and resonator

#20
20160093430
2016-03-31

Magnetic field distribution control apparatus

#21
20150270875
2015-09-24

Docking station for inductively charged portable electronic device

#22
20150042429
2015-02-12

Magnetic field distribution control apparatus

#23
20140375259
2014-12-25

Steering wheel and car using the steering wheel

#24
20140333260
2014-11-13

Charging coil system for a drop-in target device such as a toothbrush

#25
20140285138
2014-09-25

Device for inductive energy transfer

#26
20140176057
2014-06-26

System of securing a wide-range of devices during wireless charging

#27
20130314078
2013-11-28

Integrated micro actuator and LVDT for high precision position measurements

#28
20130049682
2013-02-28

Docking station for inductively charged portable electronic device

#29
20110167616
2011-07-14

Method for manufacturing tactile-sensitive material utilizing microcoils

#30
20100253454
2010-10-07

BALUN FOR MAGNETIC RESONANCE IMAGING

#31
20100213930
2010-08-26

Integrated micro actuator and IVDT for high precision position measurements

#32
20100164497
2010-07-01

Pre-adjustable SMD coils for high currents

#33
20100001827
2010-01-07

Transformer

#34
20090174014
2009-07-09

Micromechanical actuators comprising semiconductors on a group III nitride basis

#35
20090149933
2009-06-11

Implantable lead having a variable coil conductor pitch

#36
20090045820
2009-02-19

Tactile sensor utilizing microcoils with spiral shape

#37
20080122568
2008-05-29

Variable inductor

#38
20080007384
2008-01-10

Variable Inductor

#39
20070246594
2007-10-25

Constant frequency power supply

#40
20070236317
2007-10-11

Electronic device having helical resilient member serving as electric inductance element

#41
20070200559
2007-08-30

Precision position sensor using a nonmagnetic coil form

#42
20070182520
2007-08-09

Variable inductor element and mobile wireless apparatus

#43
20070176719
2007-08-02

Magnetically actuated microelectromechanical systems actuator

#44
20070148895
2007-06-28

Integrateable capacitors and microcoils and methods of making thereof

#45
20070145523
2007-06-28

Integrateable capacitors and microcoils and methods of making thereof

#46
20070115084
2007-05-24

Planar inductor using liquid metal MEMS technology

#47
20060290450
2006-12-28

Tunable micro electromechanical inductor

#48
20060202683
2006-09-14

Position sensing assembly with sychronizing capability

#49
20060192551
2006-08-31

Linear force detecting element formed without ferromagnetic materials which produces a resolution in a range of microns or less

#50
20060186878
2006-08-24

Linear variable differential transformers for high precision position measurements

#51
20060186877
2006-08-24

Linear variable differential transformers for high precision position measurements

#52
20060186876
2006-08-24

Linear variable differential transformers for high precision position measurements

#53
20060132258
2006-06-22

Method and apparatus for large ratio radio frequency variable inductor and use in radio frequency power matching systems

#54
20060097838
2006-05-11

Microwave tunable inductor and associated methods

#55
20060072224
2006-04-06

Magnetically actuated microelectromechanical systems actuator

#56
20050046420
2005-03-03

Method and system for adjusting the fundamental symmetric mode of coupled high temperature superconductor coils

#57
13797699
2015-02-24

Configurable transformer module