ClassID:

201629

H01F21/005 - CPC Classification

Classification description:

Variable inductances or transformers of the signal type Inductances without magnetic core

Recent Application in this class:
#1
20250218642
2025-07-03

ADJUSTABLE INDUCTOR, AND TRANSMISSION CIRCUIT FOR MAGNETIC RESONANCE

#2
20240145147
2024-05-02

THIN FILM INDUCTOR ELEMENT AND THIN FILM VARIABLE INDUCTOR ELEMENT

#3
20210211014
2021-07-08

Rotary connector module for device forming quasi three-dimentional image

#4
20210210270
2021-07-08

RESONANT ROTATING TRANSFORMER

#5
20190164371
2019-05-30

Coin detection antenna and coin processing device

#6
20190060953
2019-02-28

LOW-FREQUENCY SOUND SOURCE FOR UNDERWATER SOUND PROPAGATION RESEARCH AND CALIBRATION

#7
20170330772
2017-11-16

Plasma processing apparatus

#8
20170243687
2017-08-24

Low inter-winding capacitance coil form

#9
20160372247
2016-12-22

Variable inductance inductor and variable inductance inductor module

#10
20140210585
2014-07-31

Variable core electromagnetic device

#11
20130200969
2013-08-08

Multi-layer-multi-turn structure for tunable high efficiency inductors

#12
20130200968
2013-08-08

Multi-layer-multi-turn structure for high efficiency inductors

#13
20130199027
2013-08-08

Method for manufacture of multi-layer-multi-turn high efficiency inductors

#14
20130140672
2013-06-06

Variable inductor and semiconductor device using same

#15
20110260819
2011-10-27

CONTINUOUSLY TUNABLE INDUCTOR WITH VARIABLE RESISTORS

#16
20110018668
2011-01-27

Variable inductor with non-magnetic core and method of manufacture therefor

#17
20100123536
2010-05-20

TUNABLE CAPACITIVELY LOADED TRANSFORMER PROVIDING SWITCHED INDUCTANCE FOR RF/MICROWAVE INTEGRATED CIRCUITS

#18
20090251267
2009-10-08

Inductors and methods of operating inductors

#19
20090189725
2009-07-30

On-chip integrated voltage-controlled variable inductor, methods of making and tuning such variable inductors, and design structures integrating such variable inductors

#20
20080018424
2008-01-24

INDUCTIVE SENSOR

#21
20070115084
2007-05-24

Planar inductor using liquid metal MEMS technology

#22
20060097838
2006-05-11

Microwave tunable inductor and associated methods

#23
15684767
2018-12-04

Low-frequency sound source for underwater sound propagation research and calibration

#24
14086647
2016-04-19

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