H03H9/6409 - CPC Classification Index

ClassID:

220800 ⎘

H03H9/6409 - CPC Classification

Classification description:

Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators; Filters using surface acoustic waves; Filters characterised by a particular frequency characteristic SAW notch filters

Recent Application in this class:

20260031792

2026-01-29

MULTILAYER PIEZOELECTRIC SUBSTRATE RESONATOR REFLECTOR STOPBAND SETTING

20240088867

2024-03-14

Acoustic wave resonator with multiple resonant frequencies

20220294413

2022-09-15

Hybrid signal filter

20220239281

2022-07-28

Electroacoustic filter including split resonator with detuning

20210119609

2021-04-22

Acoustic wave resonator with multiple resonant frequencies

20210058067

2021-02-25

Filter circuit with a notch filter

20200412333

2020-12-31

Extractor

20200389149

2020-12-10

Microfabricated notch filter

20200358424

2020-11-12

Acoustic wave filter with shunt resonator having multiple resonant frequencies

#10

20200136588

2020-04-30

Band pass filter having parallel connected notch filter circuits

#11

20200052675

2020-02-13

Acoustic wave device, filter, and composite filter device

#12

20190379353

2019-12-12

Extractor

#13

20190260355

2019-08-22

Tunable notch filter

#14

20190190495

2019-06-20

Reconfigurable microacoustic filter and duplexer comprising a reconfigurable microacoustic filter

#15

20190149131

2019-05-16

Multiplexer, high-frequency front-end circuit, and communication apparatus

#16

20180367121

2018-12-20

Band elimination filter and composite filter

#17

20180367118

2018-12-20

Miniature tunable filters

#18

20180302060

2018-10-18

Saw filter comprising an additional pole

#19

20180241373

2018-08-23

Elastic wave device

#20

20180131344

2018-05-10

Filter modules and filter arrays having inductive impedance

#21

20180123563

2018-05-03

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

#22

20180048292

2018-02-15

Dual passband radio frequency filter and communications device

#23

20180041190

2018-02-08

High frequency circuit and communication apparatus

#24

20170302252

2017-10-19

Dual passband radio frequency filter and communications device

#25

20170264270

2017-09-14

Notch filter

#26

20170244382

2017-08-24

High power and low loss acoustic filter

#27

20170163244

2017-06-08

Duplexer device

#28

20160352368

2016-12-01

Tunable notch filter

#29

20160056792

2016-02-25

Flip chip type saw band reject filter design

#30

20160028373

2016-01-28

High rejection surface acoustic wave duplexer

#31

20160020750

2016-01-21

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

#32

20150236390

2015-08-20

Miniature acoustic resonator-based filters and duplexers with cancellation methodology

#33

20150130680

2015-05-14

Duplexer and method for increasing the isolation between two filters

#34

20140218133

2014-08-07

Flip chip type saw band reject filter design

#35

20140145800

2014-05-29

Acoustic wave band reject filter

#36

20140145799

2014-05-29

Acoustic wave band reject filter

#37

20120313731

2012-12-13

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

#38

20120286892

2012-11-15

MEMS tunable notch filter frequency automatic control loop systems and methods

#39

20120235877

2012-09-20

BAND REJECT FILTERS

#40

20120204415

2012-08-16

Process for producing an acoustic device having a controlled-bandgap phononic crystal structure

#41

20120007475

2012-01-12

Construction element that operates with acoustic waves, and method for the manufacture thereof

#42

20110298565

2011-12-08

Device and method for cascading filters of different materials

#43

20110248795

2011-10-13

Band reject filters

#44

20110235557

2011-09-29

Self-matched band reject filter

#45

20110210805

2011-09-01

Duplexer and method for increasing the isolation between two filters

#46

20110187478

2011-08-04

Antenna matching circuit

#47

20110102107

2011-05-05

Filter, portable terminal and electronic component

#48

20110090026

2011-04-21

Band rejection filter

#49

20110081878

2011-04-07

Filtering device for filtering RF signals and method for filtering RF signals

#50

20100308911

2010-12-09

Band reject filters

#51

20100265010

2010-10-21

Device and method for cascading filters of different materials

#52

20100109801

2010-05-06

Acoustic wave filter, duplexer, communication module, and communication apparatus

#53

20080258983

2008-10-23

Saw filter comprising a broadband band-stop filter

#54

20080224799

2008-09-18

Saw filter device

#55

20080129411

2008-06-05

Band reject filters

#56

20060109064

2006-05-25

Tunable surface acoustic wave resonators

#57

20050099244

2005-05-12

Band elimination filter, filter device, antenna duplexer and communication apparatus

#58

14495494

2015-07-07

High rejection surface acoustic wave filter