Patents-Review.com
ClassID:

221129 ⎘

H03H2250/00 - CPC Classification

Classification description:

Indexing scheme relating to dual- or multi-band filters

Recent Application in this class:
#1
20250392279
2025-12-25

MULTI-BAND FILTER WITH SUPPRESSED SHEAR HORIZONTAL MODE

 #2
20250239994
2025-07-24

MULTI-BAND ACOUSTIC MULTIPLEXER FILTER CIRCUIT

 #3
20250167753
2025-05-22

METHOD, SYSTEM, AND APPARATUS FOR RESONATOR CIRCUITS AND MODULATING RESONATORS

 #4
20230253990
2023-08-10

MULTI-BAND INPUT STAGE OF RECEIVER WITH SELECTABLE THIRD HARMONIC FILTER

 #5
20230231529
2023-07-20

MULTI-BAND FILTER WITH SUPPRESSED SHEAR HORIZONTAL MODE

 #6
20230142184
2023-05-11

Method, system, and apparatus for resonator circuits and modulating resonators

 #7
20230107684
2023-04-06

ACOUSTIC WAVE FILTER WITH A COMMON GROUND NODE

 #8
20230105119
2023-04-06

MULTI BAND FILTER PACKAGE WITH A COMMON GROUND CONNECTION

 #9
20220311465
2022-09-29

Radio-frequency module and communication device

 #10
20210143854
2021-05-13

Radio-frequency module and communication device

 #11
20210099151
2021-04-01

Method, system, and apparatus for resonator circuits and modulating resonators

 #12
20200412398
2020-12-31

Radio-frequency module and communication device

 #13
20200106466
2020-04-02

Radio-frequency module and communication device

 #14
20190393853
2019-12-26

Method, system, and apparatus for resonator circuits and modulating resonators

 #15
20190140678
2019-05-09

Radio-frequency module and communication device

 #16
20180123628
2018-05-03

Radio-frequency module and communication device

 #17
20180123563
2018-05-03

Method, System, and Apparatus for Resonator Circuits and Modulating Resonators

 #18
20180054175
2018-02-22

Continuously tunable and highly reconfigurable multiband RF filter

 #19
20180019729
2018-01-18

High-frequency filter, front-end circuit, and communication device

 #20
20180006628
2018-01-04

Method, system, and apparatus for resonator circuits and modulating resonators

 #21
20170373663
2017-12-28

Acoustic wave device

 #22
20170346452
2017-11-30

Radio frequency filter, radio frequency front-end circuit, communication device, and design method for radio frequency filter

 #23
20170338851
2017-11-23

Switch module and radio-frequency module

 #24
20170302243
2017-10-19

Filter circuit, RF front end circuit, and communication apparatus

 #25
20170194993
2017-07-06

Radio-frequency module and communication device

 #26
20170141801
2017-05-18

Radio-frequency module and communication device

 #27
20170026019
2017-01-26

Coil component

 #28
20170005385
2017-01-05

Switch topology for switching filters multiplexers

 #29
20160329879
2016-11-10

Tunable filter devices and methods

 #30
20160322996
2016-11-03

Multiband filter for non-contiguous channel aggregation

 #31
20160301379
2016-10-13

Branching device

 #32
20160301376
2016-10-13

Tunable bandpass filter for communication system

 #33
20160294366
2016-10-06

MOS capacitors for variable capacitor arrays and methods of forming the same

 #34
20160268998
2016-09-15

Acoustic filter device with combined passband

 #35
20160173057
2016-06-16

Method, system, and apparatus for resonator circuits and modulating resonators

 #36
20160020750
2016-01-21

Method, system, and apparatus for resonator circuits and modulating resonators

 #37
20150304059
2015-10-22

Frequency multiplexer

 #38
20150130558
2015-05-14

Filter device and duplexer

 #39
20150084688
2015-03-26

Baseband processing circuitry

 #40
20150035599
2015-02-05

Power amplifier and distributed filter

 #41
20150035592
2015-02-05

Correction of the passband of an air gap transformer

 #42
20140340173
2014-11-20

Method, system, and apparatus for resonator circuits and modulating resonators

 #43
20140292442
2014-10-02

Switched band-pass filter

 #44
20140210569
2014-07-31

Module substrate and module

 #45
20140199956
2014-07-17

Tunable filter devices and methods

 #46
20140159833
2014-06-12

Elastic wave device

 #47
20130344835
2013-12-26

Mobile communication device

 #48
20130335172
2013-12-19

Acoustic wave filter

 #49
20130285862
2013-10-31

Reconfigurable multi-band filter

 #50
20130200961
2013-08-08

Electrical double filter structure

 #51
20130162374
2013-06-27

Tunable bandpass filter

 #52
20130069742
2013-03-21

Dual-band surface acoustic wave filter and composite high-frequency component

 #53
20120313731
2012-12-13

Method, system, and apparatus for resonator circuits and modulating resonators

 #54
20120200371
2012-08-09

Acoustic wave device and method for manufacturing the same

 #55
20120139658
2012-06-07

Imbalance detection and reduction for wideband balun

 #56
20110294454
2011-12-01

Programmable filter

 #57
20110260805
2011-10-27

Dual-track surface-wave filter

 #58
20110026507
2011-02-03

Filter circuit and receiver using the same

 #59
20110012692
2011-01-20

Current-input current-output reconfigurable passive reconstruction filter

 #60
20100188162
2010-07-29

Wideband divider

 #61
20100156562
2010-06-24

WIDEBAND VARIABLE FREQUENCY BAND PASS FILTER

 #62
20100127795
2010-05-27

Multiband filter

 #63
20100109475
2010-05-06

Surface acoustic wave element, surface acoustic wave device and methods for manufacturing the same

 #64
20100074550
2010-03-25

Multi format video filter design

 #65
20100048240
2010-02-25

Integrated radio frequency filters for multiband transceivers

 #66
20090273409
2009-11-05

Acoustic wave filter apparatus

 #67
20090273408
2009-11-05

Filter duplexer and communication device

 #68
20090180035
2009-07-16

FILTER ARRANGEMENT FOR A TUNER IN A BROADBAND RECEIVER

 #69
20090153263
2009-06-18

Modulized wave filter

 #70
20090085818
2009-04-02

Digitally tuned, integrated RF filters with enhanced linearity for multi-band radio applications

 #71
20090034504
2009-02-05

High-frequency component

 #72
20090033437
2009-02-05

Filter module and communication apparatus

 #73
20090002255
2009-01-01

Matching device and antenna matching circuit

 #74
20080315968
2008-12-25

High-frequency composite component

 #75
20080309435
2008-12-18

NOISE FILTER

 #76
20080224791
2008-09-18

Integrated balanced-unbalanced duplexer

 #77
20080157898
2008-07-03

Low-pass step attenuator

 #78
20080136560
2008-06-12

Multi band pass filters

 #79
20080122554
2008-05-29

Balanced/unbalanced filter module and communication apparatus

 #80
20080100372
2008-05-01

Filter of adjustable frequency response and method thereof

 #81
20080055017
2008-03-06

Hybrid low pass diplex filter

 #82
20080018414
2008-01-24

Elastic wave device and manufacturing method of the same

 #83
20070285187
2007-12-13

Semiconductor device interconnecting unit, semiconductor device and high-frequency module having a millimeter wave band

 #84
20070182510
2007-08-09

Multi-band filter module and method of fabricating the same

 #85
20070139138
2007-06-21

Switchable dual-band filter

 #86
20070123175
2007-05-31

High-frequency switch module

 #87
20070046399
2007-03-01

Saw resonator

 #88
20070035362
2007-02-15

High frequency composite component

 #89
20070013462
2007-01-18

Dual-band bandpass filter

 #90
20060268811
2006-11-30

Triplexer circuit

 #91
20060183456
2006-08-17

Semiconductor device, radio terminal device, and radio communication equipment

 #92
20060158281
2006-07-20

SAW ladder filter

 #93
20060063493
2006-03-23

Integrated radio frequency filters for multiband transceivers

 #94
20060028301
2006-02-09

Discrete inductor bank and LC filter

 #95
20050264466
2005-12-01

Matching unit and receiver apparatus using the same

 #96
20050264376
2005-12-01

Methods and apparatus for an improved discrete LC filter

 #97
20050206478
2005-09-22

Antenna duplexer

 #98
20050146397
2005-07-07

Surface acoustic wave device and electronic circuit device

 #99
20050012565
2005-01-20

Methods and apparatus for an improved discrete LC filter

 #100
20050001697
2005-01-06

Electronic filter assembly

 #101
16188647
2019-11-12

Power conversion system and filter therefor