ClassID:

201628

H01F21/00 - CPC Classification

Classification description:

Variable inductances or transformers of the signal type

Sub-classes:
Recent Application in this class:
#1
20260074102
2026-03-12

SUPERCONDUCTING TUNABLE INDUCTANCE

#2
20250104894
2025-03-27

DOWNSIZED VARIABLE INDUCTOR

#3
20230370040
2023-11-16

Variable circuit

#4
20230238165
2023-07-27

Automatic calibration system and method for passive low-power voltage transformer

#5
20210375516
2021-12-02

SUPERCONDUCTING TUNABLE INDUCTANCE

#6
20200067561
2020-02-27

Inductor circuit and wireless communication devices

#7
20200028536
2020-01-23

Inductor circuit and wireless communication devices

#8
20190198214
2019-06-27

REACTOR

#9
20160379752
2016-12-29

Variable inductor and wireless communication device including variable device for conversion of a baseband signal to a radio frequency (RF) range

#10
20160189855
2016-06-30

Network transformer and producing method thereof

#11
20160172982
2016-06-16

Equations for an LLC converter having increased power output capabilities

#12
20160141089
2016-05-19

Multilayer inductor

#13
20150288170
2015-10-08

Passive fault current limiter for wind power applications

#14
20150279553
2015-10-01

System and method for tuning transformers

#15
20150145628
2015-05-28

Printed circuit board

#16
20150061660
2015-03-05

Sensor device having inductors for detecting power flowing through a power line

#17
20140152412
2014-06-05

High-power variable inductor and filter employing same

#18
20140138792
2014-05-22

Hybrid transformer structure on semiconductor devices

#19
20140104288
2014-04-17

THROUGH SUBSTRATE VIA INDUCTORS

#20
20140104284
2014-04-17

THROUGH SUBSTRATE VIA INDUCTORS

#21
20140015508
2014-01-16

Inductor that switches between coupled and decoupled states

#22
20110241437
2011-10-06

Wireless power transmission system

#23
20110204473
2011-08-25

Voltage-controlled semiconductor inductor and method

#24
20100253457
2010-10-07

METHOD FOR CONTROLLING MOVABLE INDUCTOR BY USING MAGNETISM AND DEVICE THEREOF

#25
20090189680
2009-07-30

Voltage-controlled semiconductor inductor and method

#26
20080119363
2008-05-22

Use of superconductor components in thin layers as variable inductance and devices including said components and corresponding control method

#27
20070164837
2007-07-19

Tunable-inductance thin-layered superconductor components, method for the production thereof and devices including said components

#28
20070046412
2007-03-01

Voltage-controlled semiconductor inductor and method

#29
20050258507
2005-11-24

Spiral inductor with electrically controllable resistivity of silicon substrate layer

#30
20050171619
2005-08-04

Real time electronic parameter control

#31
20050062573
2005-03-24

Non-contact magnetically variable differential transformer

#32
16728109
2020-08-04

Switch-type phase shifter