Patents-Review.com
ClassID:

213974 ⎘

H01P1/20345 - CPC Classification

Classification description:

Auxiliary devices; Frequency-selective devices, e.g. filters; Filters for transverse electromagnetic waves; Strip line filters; Electromagnetic interstage coupling; Comb or interdigital filters Multilayer filters

Recent Application in this class:
#1
20260106361
2026-04-16

ELECTROMAGNETIC BANDGAP FILTER IMPLEMENTED IN PCB WITH THROUGH-HOLE VIAS

 #2
20260024903
2026-01-22

PHASE SHIFTER AND ELECTRONIC DEVICE

 #3
20250316877
2025-10-09

MULTI-LAYER WAVEGUIDE WITH METASURFACE, ARRANGEMENT, AND METHOD FOR PRODUCTION THEREOF

 #4
20240387969
2024-11-21

FILTER

 #5
20240304970
2024-09-12

MULTILAYERED FILTER DEVICE

 #6
20240297427
2024-09-05

PHASE SHIFTER AND ELECTRONIC DEVICE

 #7
20240146276
2024-05-02

FILTER DEVICE

 #8
20240074038
2024-02-29

MULTILAYER SUBSTRATE

 #9
20240072403
2024-02-29

DIELECTRIC FILTER

 #10
20240040693
2024-02-01

PRINTED WIRING BOARD, MULTILAYER RESONATOR, AND MULTILAYER FILTER

 #11
20240039136
2024-02-01

FILTER DEVICE AND RADIO-FREQUENCY FRONT-END CIRCUIT EQUIPPED WITH THE SAME

 #12
20230420818
2023-12-28

MULTI-LAYERED RESONATOR CIRCUIT STRUCTURE AND MULTI-LAYERED FILTER CIRCUIT STRUCTURE

 #13
20230318160
2023-10-05

MULTILAYER SUBSTRATE AND MANUFACTURING METHOD THEREFOR

 #14
20230282953
2023-09-07

MULTILAYERED FILTER DEVICE

 #15
20230253946
2023-08-10

FILTER DEVICE

 #16
20230223671
2023-07-13

MULTI-LAYER WAVEGUIDE WITH METASURFACE, ARRANGEMENT, AND METHOD FOR PRODUCTION THEREOF

 #17
20230216165
2023-07-06

FILTER DEVICE

 #18
20230188111
2023-06-15

Filter device and radio-frequency front-end circuit including the same

 #19
20230188110
2023-06-15

Filter device and radio-frequency front end circuit including the same

 #20
20230179167
2023-06-08

RESONANT DEVICE, FILTER, AND MODULE

 #21
20230179166
2023-06-08

RESONANT DEVICE AND FILTER

 #22
20230130049
2023-04-27

Multilayered filter device

 #23
20230127771
2023-04-27

Multilayered filter device

 #24
20230057594
2023-02-23

A ROLLED OR FOLDED FILTER

 #25
20220337215
2022-10-20

Band pass filter

 #26
20220311405
2022-09-29

Composite electronic component

 #27
20220216578
2022-07-07

Filter device and equivalent filter circuit thereof

 #28
20220131252
2022-04-28

High-frequency module including a laminated filter having alternating conductive and dielectric layers and a through hole extending through the filter for coupling to a transmission line

 #29
20220006170
2022-01-06

Filter

 #30
20210328317
2021-10-21

Multilayered filter device

 #31
20210305669
2021-09-30

Filter

 #32
20210159578
2021-05-27

Free-form dual dual-conductor integrated radio frequency media

 #33
20210124231
2021-04-29

Tunable radio-frequency device having electrochromic and electro-active materials

 #34
20210057143
2021-02-25

Filter circuits

 #35
20200344875
2020-10-29

Multilayer circuit board comprising serially connected signal lines and stubs disposed in different layers of the multilayer circuit board

 #36
20200313265
2020-10-01

Apparatus for radio frequency signals and method of manufacturing such apparatus

 #37
20200303798
2020-09-24

Multilayered filter device

 #38
20200203794
2020-06-25

LOW TEMPERATURE CO-FIRED CERAMIC FILTER

 #39
20200203793
2020-06-25

Low temperature co-fired ceramic band-pass filter

 #40
20200106148
2020-04-02

Band-pass filter

 #41
20200076033
2020-03-05

Filter assemblies, tuning elements and method of tuning a filter

 #42
20190199313
2019-06-27

Band-pass filter

 #43
20190198959
2019-06-27

Band-pass filter

 #44
20190173148
2019-06-06

Integrated circuit with capacitor in different layer than transmission line

 #45
20190157731
2019-05-23

Band-pass filter and control method thereof

 #46
20190097311
2019-03-28

Composite electronic component

 #47
20190044207
2019-02-07

Filter circuits having a resonator-based filter and a magnetically-coupled filter

 #48
20190007018
2019-01-03

Multilayer electronic component

 #49
20180331406
2018-11-15

Filter assemblies, tuning elements and method of tuning a filter

 #50
20180323485
2018-11-08

Miniature LTCC coupled stripline resonator filters for digital receivers

 #51
20180115295
2018-04-26

LC filter

 #52
20180102752
2018-04-12

High-frequency filter and high-frequency module

 #53
20170330824
2017-11-16

Signal transmission apparatus including semiconductor chips and signal isolator

 #54
20170288633
2017-10-05

High pass filter

 #55
20170264018
2017-09-14

Reconfigurable multi-band antenna with independent control

 #56
20170214123
2017-07-27

Antenna assistant device and electronic device including the same

 #57
20170200998
2017-07-13

Stacked filters

 #58
20170141752
2017-05-18

Radio-frequency (RF) component

 #59
20170141446
2017-05-18

Filter assemblies, tuning elements and method of tuning a filter

 #60
20170069943
2017-03-09

Multilayer microwave filter

 #61
20170034633
2017-02-02

Microstrip filter and microphone device using same

 #62
20160373085
2016-12-22

RF circuit with multiple-definition RF substrate and conductive material void under a bias line

 #63
20160336917
2016-11-17

Resonance device and filter including the same

 #64
20160301376
2016-10-13

Tunable bandpass filter for communication system

 #65
20160248140
2016-08-25

LTCC balun filter using two out-of-phase filtering circuits

 #66
20160218690
2016-07-28

Electronic component

 #67
20160211563
2016-07-21

Structure and electronic circuit

 #68
20160182003
2016-06-23

Impedance conversion circuit, antenna apparatus, and wireless communication apparatus

 #69
20160118951
2016-04-28

High frequency filter and high frequency module equipped with same

 #70
20160093937
2016-03-31

Common mode filter

 #71
20160072167
2016-03-10

Electromagnetic resonant coupler and high-frequency transmission device

 #72
20160065168
2016-03-03

Resonance coupler and transmission device

 #73
20160049713
2016-02-18

Stress relieved high power RF circuit

 #74
20150325900
2015-11-12

Flat cable high-frequency filter, flat cable high-frequency diplexer, and electronic device

 #75
20150295599
2015-10-15

Electromagnetic resonance coupler and transmission apparatus

 #76
20150289419
2015-10-08

High-frequency module

 #77
20150214611
2015-07-30

Antenna device and communication terminal apparatus

 #78
20150214594
2015-07-30

Bandpass filter and method of fabricating the same

 #79
20150155848
2015-06-04

High-frequency device and directional coupler

 #80
20150145617
2015-05-28

Common mode filter and method of manufacturing the same

 #81
20150116059
2015-04-30

Compact microstrip bandpass filter with multipath source-load coupling

 #82
20150091667
2015-04-02

Wideband impedance transformer

 #83
20150077197
2015-03-19

Hybrid resonators in multilayer substrates and filters based on these resonators

 #84
20150054599
2015-02-26

High frequency module

 #85
20140340175
2014-11-20

Signal transmission device, filter, and inter-substrate communication device

 #86
20140266505
2014-09-18

Device for EMC filtering on a printed circuit

 #87
20140240061
2014-08-28

Electronic component

 #88
20140203976
2014-07-24

Magnetic antenna, antenna device, and electronic apparatus

 #89
20140203891
2014-07-24

RF signal blocking device

 #90
20140159985
2014-06-12

Current breaker and wireless communication device having the same

 #91
20140077895
2014-03-20

High-frequency filter

 #92
20140049343
2014-02-20

Circuit substrate having noise suppression structure

 #93
20130271909
2013-10-17

Multi-pair differential lines printed circuit board common mode filter

 #94
20130250536
2013-09-26

Electronic device

 #95
20130249652
2013-09-26

Gigahertz common-mode filter for multi-layer planar structure

 #96
20130229241
2013-09-05

Multilayer band pass filter

 #97
20130214880
2013-08-22

Electronic component

 #98
20130200961
2013-08-08

Electrical double filter structure

 #99
20130194142
2013-08-01

Filter circuit

 #100
20130169382
2013-07-04

Common mode filter and method for manufacturing the same

 #101
20130154769
2013-06-20

Band-pass filter

 #102
20130154765
2013-06-20

Cross-coupled bandpass filter

 #103
20130120950
2013-05-16

Band-pass filter module and module substrate

 #104
20130009727
2013-01-10

Surface mountable multi-layer ceramic filter

 #105
20120319803
2012-12-20

Switchable band-pass filter

 #106
20120313733
2012-12-13

Planar filter assembly

 #107
20120313730
2012-12-13

Laminated bandpass filter

 #108
20120313729
2012-12-13

LC COMPOSITE COMPONENT AND STRUCTURE FOR MOUNTING LC COMPOSITE COMPONENT

 #109
20120280769
2012-11-08

Spin wave device

 #110
20120274431
2012-11-01

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

 #111
20120274420
2012-11-01

Filter circuit

 #112
20120262251
2012-10-18

Noise filtering circuit for suppressing EMI

 #113
20120249264
2012-10-04

Layered bandpass filter

 #114
20120249258
2012-10-04

ELECTRONIC COMPONENT

 #115
20120235773
2012-09-20

Signal transmission device, filter, and inter-substrate communication device

 #116
20120200369
2012-08-09

DC BLOCKING DEVICE BY USING IMPEDANCE MATCHING

 #117
20120161897
2012-06-28

Directional coupler

 #118
20120139814
2012-06-07

FREQUENCY STABILIZATION CIRCUIT, ANTENNA DEVICE, AND COMMUNICATION TERMINAL DEVICE

 #119
20120127049
2012-05-24

Frequency stabilization circuit, frequency stabilization device, antenna apparatus and communication terminal equipment, and impedance conversion element

 #120
20120119853
2012-05-17

Resonant elements designed vertically in a multilayer board and filters based on these elements

 #121
20120119852
2012-05-17

Multilayer band-pass filter

 #122
20120103675
2012-05-03

Laminated electronic devices with conical vias

 #123
20120092090
2012-04-19

Coupling structure for multi-layered chip filter, and multi-layered chip filter with the structure

 #124
20120075038
2012-03-29

WIRING SUBSTRATE, FILTER DEVICE AND PORTABLE EQUIPMENT

 #125
20120062343
2012-03-15

Signal transmission device, filter, and inter-substrate communication device

 #126
20120049981
2012-03-01

Signal transmission device, filter, and inter-substrate communication device

 #127
20120032760
2012-02-09

COMPACT PLANAR RESONATORS WITH Z-AXIS FOLDING

 #128
20120032758
2012-02-09

Electronic component

 #129
20110316652
2011-12-29

Multiband resonator and multiband-pass filter

 #130
20110309994
2011-12-22

Antenna device and communication terminal apparatus

 #131
20110309895
2011-12-22

MULTILAYER FILTER

 #132
20110298569
2011-12-08

Units for analog signal processing

 #133
20110279197
2011-11-17

Common mode filter

 #134
20110267156
2011-11-03

Stripline filter

 #135
20110237216
2011-09-29

Bandpass filter, and wireless communication module and wireless communication device using the bandpass filter

 #136
20110227673
2011-09-22

Ground structures in resonators for planar and folded distributed electromagnetic wave filters

 #137
20110193658
2011-08-11

Filter using a waveguide structure

 #138
20110186341
2011-08-04

STRUCTURE, ELECTRONIC DEVICE, AND CIRCUIT BOARD

 #139
20110181342
2011-07-28

High-frequency switch module

 #140
20110169588
2011-07-14

Branching filter, and wireless communication module and wireless communication device using same

 #141
20110148548
2011-06-23

Line filter formed on dielectric layers

 #142
20110140807
2011-06-16

High efficiency resonator for wireless power transmission

 #143
20110133860
2011-06-09

Bandpass filter, high-frequency device and communications apparatus

 #144
20110080235
2011-04-07

Bandpass filter and radio communication module and radio communication device using the same

 #145
20110074527
2011-03-31

Layered bandpass filter

 #146
20110074526
2011-03-31

Multilayer bandpass filter

 #147
20110074521
2011-03-31

Circuit configuration

 #148
20110069739
2011-03-24

Bandpass filter and radio communication module and radio communication device using the same

 #149
20110050364
2011-03-03

Printed multilayer filter methods and designs using extended CRLH (E-CRLH)

 #150
20110043304
2011-02-24

Left-handed resonator and left-handed filter using the same

 #151
20110037540
2011-02-17

Laminated filter

 #152
20110032052
2011-02-10

Harmonic suppression device

 #153
20110006857
2011-01-13

Complex resonator, bandpass filter, and diplexer, and wireless communication module and wireless communication device using same

 #154
20110000570
2011-01-06

Stacked conduit assembly and screw fastening method for conduit part

 #155
20100283557
2010-11-11

Multilayer bandpass filter

 #156
20100245155
2010-09-30

High-frequency transmission line connection structure, circuit board, high-frequency module, and radar device

 #157
20100219915
2010-09-02

Bandpass filter, and wireless communication module and wireless communication apparatus which employ the bandpass filter

 #158
20100214040
2010-08-26

Multilayer planar tunable filter

 #159
20100214039
2010-08-26

Filter

 #160
20100214037
2010-08-26

Filter with integrated loading capacitors

 #161
20100203859
2010-08-12

Bandpass filter, and radio communication module and radio communication device using same

 #162
20100194498
2010-08-05

Multilayer electronic component and multilayer electronic component manufacturing method

 #163
20100164651
2010-07-01

Bandpass filter with dual band response

 #164
20100124423
2010-05-20

Printed circuit board and optical transmission device

 #165
20100073109
2010-03-25

Filtering device and related wireless communication receiver

 #166
20100073108
2010-03-25

Laminated bandpass filter, high-frequency component and communications apparatus comprising them

 #167
20100039189
2010-02-18

Laminated band-pass filter having an even number of LC parallel resonators

 #168
20100033271
2010-02-11

Bandpass filter, wireless communication module and wireless communication device

 #169
20100033270
2010-02-11

Bandpass filter, wireless communication module and wireless communication device

 #170
20090322450
2009-12-31

Electromagnetic bandgap structure and printed circuit board

 #171
20090206959
2009-08-20

RF module

 #172
20090140827
2009-06-04

Bandpass filter and high frequency module using the same and radio communication device using them

 #173
20090134950
2009-05-28

Passive component

 #174
20090121807
2009-05-14

Electronic component

 #175
20090051460
2009-02-26

Module and passive part

 #176
20090033439
2009-02-05

MULTILAYER FILTER

 #177
20080272855
2008-11-06

Laminate type band pass filter and diplexer using the same

 #178
20080204163
2008-08-28

Multi-band circuit with first and second signal branches

 #179
20080192401
2008-08-14

Surge absorption circuit

 #180
20080100401
2008-05-01

Band pass filter

 #181
20080079517
2008-04-03

Stacked filter

 #182
20080048797
2008-02-28

High frequency component

 #183
20070279145
2007-12-06

Passive part

 #184
20070262833
2007-11-15

Band-pass filter element and high frequency module

 #185
20070205851
2007-09-06

Stacked resonator and filter

 #186
20070176712
2007-08-02

High frequency filter

 #187
20070171005
2007-07-26

Stacked resonator

 #188
20070164840
2007-07-19

High frequency filter

 #189
20070152780
2007-07-05

MINI MULTILAYER BAND-PASS FILTER HAVING A BALANCED TO UNBALANCED SIGNAL TRANSFORMING CAPABILITY

 #190
20070146101
2007-06-28

High frequency filter

 #191
20070120627
2007-05-31

Bandpass filter with multiple attenuation poles

 #192
20070109076
2007-05-17

Ball grid array filter

 #193
20070063789
2007-03-22

Compact multilayer circuit

 #194
20070024398
2007-02-01

Electronic device and filter

 #195
20070001786
2007-01-04

Multilayer band pass filter

 #196
20060255886
2006-11-16

Bandpass filter and wireless communications equipment using same

 #197
20060255885
2006-11-16

Bandpass filter, high-frequency module, and wireless communications equipment

 #198
20060203421
2006-09-14

Micro-electro-mechanical system (MEMS) capacitors, inductors, and related systems and methods

 #199
20060202778
2006-09-14

Pole-zero elements and related systems and methods

 #200
20060192637
2006-08-31

Passive component having stacked dielectric layers

 #201
20060181370
2006-08-17

Laminated filter with improved stop band attenuation

 #202
20060114634
2006-06-01

Surge absorption circuit

 #203
20060038638
2006-02-23

Dielectric filter

 #204
20060022773
2006-02-02

Filter, high-frequency module, communication device and filtering method

 #205
20050237131
2005-10-27

Filter using multilayer ceramic technology and structure thereof

 #206
20050236103
2005-10-27

Dielectric resonator, dielectric filter and method of producing the same, filter device combined to a transmit-receive antenna and communication apparatus using the same

 #207
20050200436
2005-09-15

Compact multilayer band-pass filter and method using interdigital capacitor

 #208
20050190017
2005-09-01

Filter circuit device and method of manufacturing the same

 #209
20050154110
2005-07-14

Composite dielectric material, composite dielectric substrate, prepreg, coated metal foil, molded sheet, composite magnetic substrate, substrate, double side metal foil-clad substrate, flame retardant substrate, polyvinylbenzyl ether resin composition, thermosetting polyvinylbenzyl ether resin composition, and method for preparing thermosetting polyvinylbenzyl ether resin composition

 #210
20050140471
2005-06-30

High frequency filter

 #211
20050130447
2005-06-16

Composite dielectric material, composite dielectric substrate, prepreg, coated metal foil, molded sheet, composite magnetic substrate, substrate, double side metal foil-clad substrate, flame retardant substrate, polyvinylbenzyl ether resin composition, and method for preparing thermosetting polyvinylbenzyl ether resin composition

 #212
20050130446
2005-06-16

Composite dielectric material, composite dielectric substrate, prepreg, coated metal foil, molded sheet, composite magnetic substrate, substrate, double side metal foil-clad substrate, flame retardant substrate, polyvinylbenzyl ether resin composition, thermosetting polyvinylbenzyl ether resin composition, and method for preparing thermosetting polyvinylbenzyl ether resin composition

 #213
20050052262
2005-03-10

Multi-layer band-pass filter

 #214
18101852
2026-01-13

EBG-based electronic filter using multi-layer and multi-cell structure

 #215
17482831
2023-02-07

Multi-layer bandpass filter