ClassID:

213978

H01P1/20381 - CPC Classification

Classification description:

Auxiliary devices; Frequency-selective devices, e.g. filters; Filters for transverse electromagnetic waves; Strip line filters; Electromagnetic interstage coupling; Non-comb or non-interdigital filters Special shape resonators

Recent Application in this class:
#1
20260088481
2026-03-26

DISTRIBUTED ELEMENT RADIO FREQUENCY FILTER

#2
20250329908
2025-10-23

MILLIMETER-WAVE BANDPASS FILTER

#3
20250219618
2025-07-03

WIDEBAND FILTER WITH RESONATORS AND INDUCTORS

#4
20250192409
2025-06-12

FILTER FOR COMMUNICATION DEVICE

#5
20250167415
2025-05-22

ENHANCED BROADBAND RING RESONATOR FOR IMPROVED SPECTRAL SUPPRESSION

#6
20240250438
2024-07-25

Coupling Structure, Resonant Structure, Low-Frequency Radiation Unit, Antenna and Electromagnetic Boundary

#7
20240097300
2024-03-21

MULTI-BAND FILTER

#8
20230332958
2023-10-19

Sensors incorporated into tire plies to detect reversible deformation and/or temperature changes

#9
20230299450
2023-09-21

3D FILTER AND FABRICATION METHOD THEREOF

#10
20230198114
2023-06-22

Planar balun with non-uniform microstrip line width to improve S-parameter alignment

#11
20230066778
2023-03-02

Sensors incorporated into tire plies to detect reversible deformation and/or temperature changes

#12
20230057594
2023-02-23

A ROLLED OR FOLDED FILTER

#13
20230046599
2023-02-16

A MULTI CHANNEL FILTER FOR LOW ELECTRON TEMPERATURES

#14
20230006324
2023-01-05

Systems and methods for coupling a superconducting transmission line to an array of resonators

#15
20220285812
2022-09-08

Bandpass filter

#16
20220285811
2022-09-08

Bandpass filter

#17
20220278434
2022-09-01

Duplexers and related devices for 5G/6G and subsequent protocols and for mm-wave and terahertz applications

#18
20220271566
2022-08-25

Magnetoinductive wave control

#19
20220201844
2022-06-23

Dual-spiral common-mode filter

#20
20220123453
2022-04-21

Duplexers and related devices for 5G/6G and subsequent protocols and for mm-wave and terahertz applications

#21
20220029269
2022-01-27

Split ring resonator and communication device

#22
20210344094
2021-11-04

Single-layer cross-coupled filter

#23
20210293630
2021-09-23

Sensors incorporated into tire plies to detect reversible deformation and/or temperature changes

#24
20210257989
2021-08-19

Wideband filter with resonators and inductors

#25
20210057143
2021-02-25

Filter circuits

#26
20200411937
2020-12-31

Systems and methods for coupling a superconducting transmission line to an array of resonators

#27
20200266512
2020-08-20

Wideband filter with resonators and inductors

#28
20200196438
2020-06-18

Print circuit board, optical module, and optical transmission equipment

#29
20200127494
2020-04-23

MAGNETOINDUCTIVE WAVE CONTROL

#30
20200106148
2020-04-02

Band-pass filter

#31
20200028231
2020-01-23

Filtering dielectric resonator antennas including a loop feed structure for implementing radiation cancellation

#32
20190319330
2019-10-17

Superconducting resonator to limit vertical connections in planar quantum devices

#33
20190238110
2019-08-01

Common-mode filter

#34
20190237649
2019-08-01

Low loss architecture for superconducting qubit circuits

#35
20190214698
2019-07-11

Power distributing device

#36
20190199313
2019-06-27

Band-pass filter

#37
20190198959
2019-06-27

Band-pass filter

#38
20190165442
2019-05-30

Branch circuit

#39
20190148827
2019-05-16

Antenna arrangement

#40
20190131927
2019-05-02

SUNLIGHT RECEIVING DEVICE AND SUNLIGHT RECEIVING SYSTEM

#41
20190103645
2019-04-04

Bandstop filters with power-dependent stopband attenuation

#42
20190067772
2019-02-28

Tuneable band pass filter

#43
20190044491
2019-02-07

Magnetoinductive waveguide

#44
20190020092
2019-01-17

Filter circuit and frequency switching method

#45
20180342777
2018-11-29

Power distributing device

#46
20180331670
2018-11-15

Compact band pass filter

#47
20180294538
2018-10-11

Band-pass filtering structure and antenna housing

#48
20180177042
2018-06-21

Printed circuit board, optical module, and optical transmission equipment

#49
20180114041
2018-04-26

RFID tag and reader

#50
20180101787
2018-04-12

Quantum nondemolition microwave photon counter based on the cross-kerr nonlinearity of a josephson junction embedded in a superconducting circuit

#51
20170365905
2017-12-21

Transmission line structure having orthogonally oriented transmission line segments connected by vias extending through a substrate body

#52
20170271741
2017-09-21

Acoustic wave filter and duplexer

#53
20170237138
2017-08-17

Four-mode defected ground structure resonator

#54
20170237136
2017-08-17

Four-mode defected ground structure filter

#55
20170186710
2017-06-29

Glass interposer integrated high quality electronic components and systems

#56
20170091647
2017-03-30

Quantum nondemolition microwave photon counter based on the cross-Kerr nonlinearity of a Josephson junction embedded in a superconducting circuit

#57
20170089961
2017-03-30

Quantum nondemolition microwave photon counter based on the cross-Kerr nonlinearity of a Josephson junction embedded in a superconducting circuit

#58
20170062891
2017-03-02

Notch filter with arrow-shaped embedded open-circuited stub

#59
20160353574
2016-12-01

Microstrip band-pass filter having first and second trapezoidal shape coupling portions connected by a connection portion

#60
20160336633
2016-11-17

Micro bandpass filter

#61
20160294029
2016-10-06

Narrow-band filter having first and second resonators of different orders with resonant frequencies equal to a center frequency

#62
20160268663
2016-09-15

Filter characteristic tuning apparatus, tunable filter apparatus and control method for tunable filter apparatus

#63
20160254796
2016-09-01

Filter

#64
20160218689
2016-07-28

Waveguide

#65
20160149285
2016-05-26

Thin, flexible transmission line for band-pass signals

#66
20160126609
2016-05-05

Coupled slow-wave transmission lines

#67
20160126608
2016-05-05

Slow-wave transmission line formed in a multi-layer substrate

#68
20160126607
2016-05-05

Tunable slow-wave transmission line

#69
20160093937
2016-03-31

Common mode filter

#70
20160072170
2016-03-10

Harmonics suppression filter

#71
20160072167
2016-03-10

Electromagnetic resonant coupler and high-frequency transmission device

#72
20160056520
2016-02-25

Microwave filter

#73
20160028359
2016-01-28

Passive device cell and fabrication process thereof

#74
20150303542
2015-10-22

Tunable filter comprising a microstrip patch having symmetrical slots, asymmetrical feed lines and a plurality of diodes

#75
20150137908
2015-05-21

Acoustic wave filter and duplexer

#76
20150116059
2015-04-30

Compact microstrip bandpass filter with multipath source-load coupling

#77
20150022284
2015-01-22

Microstrip line filter

#78
20140375399
2014-12-25

Narrow band-pass filter with primary and secondary sets of resonators having out-of-band resonant frequencies that are different from each other

#79
20140292338
2014-10-02

Radio frequency resonator, radio frequency coil and magnetic resonance imaging apparatus

#80
20140235450
2014-08-21

Multi-tunable superconducting circuits

#81
20140232482
2014-08-21

Transmission line resonator, band-pass filter and branching filter

#82
20140218136
2014-08-07

Resonance coupler

#83
20140191827
2014-07-10

Wideband high frequency bandpass filter

#84
20140159834
2014-06-12

RF planar filter having resonator segments connected by adjustable electrical links

#85
20140132474
2014-05-15

Antenna

#86
20140091801
2014-04-03

Decoupling of split ring resonators in magnetic resonance tomography

#87
20140055208
2014-02-27

Resonator, multilayer board and electronic device

#88
20140022032
2014-01-23

Microwave resonator with impedance jump, notably for band-stop or band-pass microwave filters

#89
20130307644
2013-11-21

Tunable metamaterials

#90
20130307640
2013-11-21

Transmission line resonator, bandpass filter using transmission line resonator, multiplexer, balanced-to-unbalanced transformer, power divider, unbalanced-to-balanced transformer, frequency mixer, and balance-type filter

#91
20130265121
2013-10-10

Passive device cell and fabrication process thereof

#92
20130200959
2013-08-08

Microwave frequency tunable filtering balun

#93
20130187477
2013-07-25

Electromagnetic resonance coupler

#94
20130154765
2013-06-20

Cross-coupled bandpass filter

#95
20130088309
2013-04-11

RING RESONATOR AND FILTER HAVING THE SAME

#96
20130063228
2013-03-14

Reconfigurable bandpass filter based on a planar combline filter comprising varactor diodes

#97
20130057363
2013-03-07

Variable resonator, tunable bandwidth filter, and electric circuit device

#98
20130049903
2013-02-28

Artificial microstructure and metamaterial with the same

#99
20130049900
2013-02-28

Printed filtering antenna

#100
20130002374
2013-01-03

Variable resonator, variable bandwidth filter, and electric circuit device

#101
20120319803
2012-12-20

Switchable band-pass filter

#102
20120309316
2012-12-06

Common communications device

#103
20120274422
2012-11-01

Tunable bandpass filter

#104
20120235772
2012-09-20

Triple-mode microstrip filter

#105
20120169436
2012-07-05

Microwave filter

#106
20120139666
2012-06-07

Wideband high frequency bandpass filter

#107
20120098626
2012-04-26

DISTRIBUTED CONSTANT CIRCUIT

#108
20120098616
2012-04-26

Variable resonator, tunable filter, and electric circuit device

#109
20120075039
2012-03-29

Tuning bandwidth and center frequencies in a bandpass filter

#110
20120071109
2012-03-22

Harmonic control apparatus and related radio frequency devices and base stations

#111
20120062342
2012-03-15

MULTI BAND-PASS FILTER

#112
20120062341
2012-03-15

MICRO BAND-PASS FILTER

#113
20120049649
2012-03-01

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

#114
20110316653
2011-12-29

Tunable bandpass filter

#115
20110298563
2011-12-08

Printed circuit board

#116
20110281733
2011-11-17

Narrow band-pass filter having resonators grouped into primary and secondary sets of different order

#117
20110267156
2011-11-03

Stripline filter

#118
20110230356
2011-09-22

RF-properties-optimized compositions of (RE) BaCuOthin film superconductors

#119
20110187449
2011-08-04

Wideband analog lowpass filter

#120
20110150140
2011-06-23

Fractal curve based filter

#121
20110133849
2011-06-09

LOW PHASE NOISE VOLTAGE-CONTROLLED OSCILLATOR (VCO) USING HIGH QUALITY FACTOR METAMATERIAL TRANSMISSION LINES

#122
20110115574
2011-05-19

Variable resonator and variable filter

#123
20110068883
2011-03-24

Microstrip filter

#124
20110006861
2011-01-13

Liquid crystalline polymer and multilayer polymer-based passive signal processing components for RF/wireless multi-band applications

#125
20100301971
2010-12-02

Tunable metamaterials

#126
20100295634
2010-11-25

TUNABLE BANDPASS FILTER

#127
20100295633
2010-11-25

Electromagnetic bandgap pattern structure, method of manufacturing the same, and security product using the same

#128
20100277259
2010-11-04

Serial L-C resonator with three-dimensional structure and ultra-wide bandpass filter using the same

#129
20100271692
2010-10-28

Metamaterials with terahertz response and methods of making same

#130
20100265012
2010-10-21

Stripline filter and manufacturing method thereof

#131
20100244990
2010-09-30

Stripline filter

#132
20100201460
2010-08-12

Resonator and filter using the same

#133
20100182104
2010-07-22

STRIPLINE FILTER

#134
20100164652
2010-07-01

FILTER, COMMUNICATION MODULE, AND COMMUNICATION APPARATUS

#135
20100117766
2010-05-13

Capacitively loaded spurline filter

#136
20100117759
2010-05-13

Coplanar differential bi-strip delay line, higher-order differential filter and filtering antenna furnished with such a line

#137
20100105563
2010-04-29

Superconductive filter with plurality of resonator patterns formed on surface of dielectric substrate

#138
20100090782
2010-04-15

STRIP LINE FILTER

#139
20100079221
2010-04-01

Resonator and filter

#140
20100073109
2010-03-25

Filtering device and related wireless communication receiver

#141
20100073107
2010-03-25

MICRO-MINIATURE MONOLITHIC ELECTROMAGNETIC RESONATORS

#142
20100060403
2010-03-11

Dual inductance structure

#143
20100019988
2010-01-28

Frequency selective surface structure for filtering of single frequency band

#144
20100009854
2010-01-14

Superconducting filter with disk-shaped electrode pattern

#145
20090315647
2009-12-24

Dual mode generating line coupled to a dual mode ring resonator filter by half the length of the ring resonator

#146
20090237183
2009-09-24

Low-pass filter

#147
20090189716
2009-07-30

FILTER DEVICE WITH FINITE TRANSMISSION ZEROS

#148
20090174609
2009-07-09

Stripline-type composite right/left-handed transmission line or left-handed transmission line, and antenna that uses same

#149
20090160582
2009-06-25

Band-pass filter, high-frequency component, and communication apparatus

#150
20090085698
2009-04-02

Method and system for LOGEN based on harmonics using microstrip techniques

#151
20090066443
2009-03-12

Signal selecting device

#152
20090002101
2009-01-01

HIGH-PASS FILTER

#153
20080303607
2008-12-11

Balanced filter device

#154
20080297284
2008-12-04

Dual mode ring resonator filter with a dual mode generating line disposed inside the ring resonator

#155
20080266033
2008-10-30

High frequency filter having a solid circular shape resonance pattern with multiple input/output ports and an inter-port waveguide connecting corresponding output and input ports

#156
20080252400
2008-10-16

FILTER AND RADIO COMMUNICATION DEVICE USING THE SAME

#157
20080204169
2008-08-28

Variable resonator, tunable bandwidth filter, and electric circuit device

#158
20080204168
2008-08-28

Variable resonator, tunable filter, and electric circuit device

#159
20080167190
2008-07-10

Dual-mode superconductive filter having an opening pattern in a ground plane

#160
20080061909
2008-03-13

Variable resonator, variable bandwidth filter, and electric circuit device

#161
20080036557
2008-02-14

Compact bandpass filter for double conversion tuner

#162
20080024247
2008-01-31

Low-pass filter

#163
20080018421
2008-01-24

Superconducting filter device having disk resonators embedded in depressions of a substrate and method of producing the same

#164
20080011509
2008-01-17

Fractal and space-filling transmission lines, resonators, filters and passive network elements

#165
20070290771
2007-12-20

Grounding strategy for filter on planar substrate

#166
20070285193
2007-12-13

Bandpass filter

#167
20070262834
2007-11-15

Bandpass filter, electronic device including said bandpass filter, and method of producing a bandpass filter

#168
20070241842
2007-10-18

Superconductor filter

#169
20070236280
2007-10-11

Active bandpass filter

#170
20070232499
2007-10-04

Superconducting tunable filter having a patch resonator pattern tuned by a variable dielectric constant top plate

#171
20070229201
2007-10-04

FILTER CIRCUIT AND METHOD OF ADJUSTING CHARACTERISTICS THEREOF

#172
20070210874
2007-09-13

Superconductive filter capable of easily adjusting filter characteristic and filter characteristic adjusting method

#173
20070207748
2007-09-06

Antenna interface unit

#174
20070200650
2007-08-30

Dual channel band-pass filter

#175
20070171004
2007-07-26

Filter and radio communication apparatus using the same

#176
20070164841
2007-07-19

High-frequency filter

#177
20070146100
2007-06-28

Dual-band filter

#178
20070103261
2007-05-10

Variable resonator

#179
20070103260
2007-05-10

Low-pass filter

#180
20070090900
2007-04-26

Band-pass filter

#181
20070085108
2007-04-19

Liquid crystalline polymer and multilayer polymer-based passive signal processing components for RF/wireless multi-band applications

#182
20070069838
2007-03-29

Filter and radio communication device using the same

#183
20070052501
2007-03-08

Ring millimeter-wave filter having an embedded microstrip structure

#184
20070035358
2007-02-15

Dual mode filter based on smoothed contour resonators

#185
20070001787
2007-01-04

Filter circuit device having parallel connected resonator groups with cascade connected delay circuits and radio communication device formed therefrom

#186
20060276343
2006-12-07

Superconductive filter having U-type microstrip resonators with longer and shorter parallel sides

#187
20060229211
2006-10-12

RF-properties-optimized compositions of (RE)BaCuO thin film superconductors

#188
20060164188
2006-07-27

Planar filter, semiconductor device and radio unit

#189
20060125578
2006-06-15

Bandpass filter

#190
20060103494
2006-05-18

Electronically tunable comb-ring type RF filter

#191
20060091979
2006-05-04

Dual-band bandpass filter with stepped-impedance resonators

#192
20060087388
2006-04-27

Resonator

#193
20060077020
2006-04-13

Circuits and manufacturing configurations of compact band-pass filter

#194
20060071738
2006-04-06

Balanced filter device

#195
20060066420
2006-03-30

Dual mode band-pass filter

#196
20060061437
2006-03-23

Dual mode band-pass filter

#197
20060061436
2006-03-23

Dual mode band-pass filter

#198
20060055489
2006-03-16

Dual mode band-pass filter

#199
20060043580
2006-03-02

Bandpass filter within a multilayered low temperature co-fired ceramic substrate

#200
20060025309
2006-02-02

Microstrip filter including resonators having ends at different coupling distances

#201
20050285701
2005-12-29

Filter circuit

#202
20050261135
2005-11-24

Superconducting filter

#203
20050258919
2005-11-24

Skew-symmetrical defected ground structure for parallel-coupled line filters

#204
20050256010
2005-11-17

Superconducting filter device

#205
20050256008
2005-11-17

Superconducting filter device

#206
20050253671
2005-11-17

Filter

#207
20050248418
2005-11-10

Multi-band RF transceiver with passive reuse in organic substrates

#208
20050242905
2005-11-03

Filtering device and circuit module

#209
20050231304
2005-10-20

Integrated passive devices fabricated utilizing multi-layer, organic laminates

#210
20050190016
2005-09-01

Microstrip line parallel-coupled-resonator filter with open-and-short end

#211
20050184826
2005-08-25

Casing contained filter

#212
20050143263
2005-06-30

Process for making high temperature superconductor devices each having a line oriented in a spiral fashion

#213
20050140472
2005-06-30

Microstrip band pass filter using end-coupled SIRs

#214
20050128032
2005-06-16

Tunable planar capacitor

#215
20050107060
2005-05-19

Superconductive stripline filter utilizing one or more inter-resonator coupling members

#216
20050095998
2005-05-05

Tunable matching circuit

#217
20050094297
2005-05-05

Optical tunable filter and method for manufacturing the optical tunable filter

#218
20050093661
2005-05-05

Printed bandpass filter for a double conversion tuner

#219
20050088258
2005-04-28

Millimeter wave surface mount filter

#220
20050085200
2005-04-21

Tunable bandpass filter and method thereof

#221
20050077993
2005-04-14

High-frequency circuit

#222
20050068126
2005-03-31

Resonator and dielectric filter

#223
20050012572
2005-01-20

Microstrip line, resonator element, filter, high-frequency circuit and electronic device using the same

#224
20050009709
2005-01-13

Filter device having spiral resonators connected by a linear section

#225
20050007291
2005-01-13

System and method for impedance matching an antenna to sub-bands in a communication band

#226
20050007210
2005-01-13

Superconductor filter

#227
17306552
2022-03-29

Bandpass filter using triangular patch resonators