ClassID:

220455

H03H7/1783 - CPC Classification

Classification description:

Multiple-port networks comprising only passive electrical elements as network components; Frequency selective two-port networks; Structural details of sub-circuits of frequency selective networks; Comprising typical LC combinations, irrespective of presence and location of additional resistors Combined LC in series path

Recent Application in this class:
#1
20250293657
2025-09-18

FILTER DEVICE

#2
20250233578
2025-07-17

FILTER CIRCUIT

#3
20250219605
2025-07-03

ANALOG STORAGE USING MEMORY DEVICE

#4
20240322780
2024-09-26

MULTILAYER ELECTRONIC COMPONENT

#5
20240056048
2024-02-15

Frequency-selective planar radio filter

#6
20230208378
2023-06-29

KHZ TO 100GHZ DC COUPLED CIRCUIT WITH AN ON-CHIP INTEGRATING CAPACITOR

#7
20230077950
2023-03-16

Filter device and multiplexer

#8
20210328567
2021-10-21

Frequency-selective planar radio filter

#9
20210257984
2021-08-19

Multilayer filter

#10
20210104996
2021-04-08

Radio frequency filter, multiplexer, radio frequency front end circuit, and communication apparatus

#11
20200235714
2020-07-23

Filter and multiplexer

#12
20200091887
2020-03-19

Band pass filter

#13
20200021274
2020-01-16

Wideband filter structure and apparatus, radio transceiver, mobile terminal, method for filtering a radio signal

#14
20180287566
2018-10-04

Doherty amplifier

#15
20180145651
2018-05-24

Multilayer filter

#16
20180041182
2018-02-08

Resonant circuit, band elimination filter, and band pass filter

#17
20170338794
2017-11-23

Power dividing circuit and power divider

#18
20160359470
2016-12-08

Ladder-type filter, duplexer, and module

#19
20160218768
2016-07-28

Circuit of wireless transceiver chip

#20
20150303889
2015-10-22

Apparatus and method for filtering singals in a receiver

#21
20150288400
2015-10-08

Impedance matching for variable impedance antennas

#22
20150048992
2015-02-19

Broadband matching circuits

#23
20150016634
2015-01-15

Circuits for improved audio signal reconstruction

#24
20140292443
2014-10-02

Multilayer resonator and multilayer filter

#25
20140204806
2014-07-24

Duplexer, circuit structure thereof and RF transceiver apparatus comprising the duplexer

#26
20140091881
2014-04-03

Passive filter

#27
20140062616
2014-03-06

Filter

#28
20130207745
2013-08-15

3D RF L-C FILTERS USING THROUGH GLASS VIAS

#29
20120326774
2012-12-27

Switching circuit

#30
20120299666
2012-11-29

Multilayer resonator and multilayer filter

#31
20120169565
2012-07-05

Tunable radio front end and methods

#32
20120081193
2012-04-05

Band elimination filter providing attenuation within wide range of frequencies

#33
20110285482
2011-11-24

Line noise attenuator

#34
20110133853
2011-06-09

SEMICONDUCTOR DEVICE WITH FILTER CIRCUIT

#35
20110074527
2011-03-31

Layered bandpass filter

#36
20100259344
2010-10-14

Multilayer resonator and multilayer filter

#37
20100244983
2010-09-30

Constant impedance filter

#38
20100237965
2010-09-23

FILTER, FILTERING METHOD, AND COMMUNICATION DEVICE

#39
20100201456
2010-08-12

Combined matching and filter circuit

#40
20100127796
2010-05-27

ELECTRONIC FILTER AND AN ELECTRONIC CIRCUIT FOR USE IN A SWITCHING APPLICATION

#41
20100109806
2010-05-06

Transformer capable of removing harmonic components

#42
20100052813
2010-03-04

Branching filter, semiconductor integrated circuit device, and communication mobile terminal

#43
20090295501
2009-12-03

Diplexer circuit, high-frequency circuit and high-frequency module

#44
20090206950
2009-08-20

Dynamic harmonic filter for an AC power system

#45
20090179716
2009-07-16

RF Filter Device

#46
20090134954
2009-05-28

Differential band-pass filter having symmetrically interwoven inductors

#47
20090079516
2009-03-26

Passband filter

#48
20090051459
2009-02-26

FILTER

#49
20090039980
2009-02-12

Dual bandstop filter with enhanced upper passband response

#50
20090021326
2009-01-22

Electric part including a dielectric portion and a magnetic portion

#51
20090015350
2009-01-15

Band-stop filters

#52
20090009267
2009-01-08

Electronic component including a magnetic layer and a dielectric layer

#53
20080303610
2008-12-11

TUNED FILTERS WITH ENHANCED HIGH FREQUENCY RESPONSE

#54
20080204166
2008-08-28

Dual bandstop filter with enhanced upper passband response

#55
20080174386
2008-07-24

Diplexer and multiplexer using the same

#56
20080161886
2008-07-03

Tank filters adaptable for placement with a guide wire, in series with the lead wires or circuits of active medical devices to enhance MRI compatibility

#57
20080136560
2008-06-12

Multi band pass filters

#58
20080079513
2008-04-03

Switching module with harmonic phase tuning filter

#59
20080055017
2008-03-06

Hybrid low pass diplex filter

#60
20070296525
2007-12-27

Band-pass filter circuit

#61
20070001782
2007-01-04

Noise filter and noise filter array

#62
20060290445
2006-12-28

Tunable resonator with MEMS element

#63
20060203421
2006-09-14

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

#64
20060202778
2006-09-14

Pole-zero elements and related systems and methods

#65
20060192632
2006-08-31

Front end module

#66
20060170518
2006-08-03

Narrow bandpass filter installed on a circuit board for suppressing a high-frequency harmonic wave

#67
20060158282
2006-07-20

Filters with improved rejection band performance

#68
20050282503
2005-12-22

Combined matching and filter circuit

#69
20050043004
2005-02-24

Communication apparatus, electronic equipment with communication functions, communication function circuit, amplifier circuit and balun circuit

#70
20050040909
2005-02-24

Broadband integrated digitally tunable filters

#71
18348059
2025-12-02

Power splitter and associated methods