Patents-Review.com
ClassID:

231926 ⎘

H04R1/2865 - CPC Classification

Classification description:

Details of transducers, loudspeakers or microphones; Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only; Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means; Enclosures comprising vibrating or resonating arrangements using a back-loaded horn for loudspeaker transducers

Recent Application in this class:
#1
20260156404
2026-06-04

Use of corrugated and perforated tubes in a nested configuration within a rear loaded horn speaker enclosure to improve the acoustic performance and bass response

 #2
20230403499
2023-12-14

Dual compression driver with cone diaphragm

 #3
20230362535
2023-11-09

Compression driver with dome diaphragm and annular exit

 #4
20230030850
2023-02-02

Horn-loaded loudspeaker

 #5
20220047839
2022-02-17

Sleep apnea treatment apparatus and method

 #6
20210164645
2021-06-03

Lighting and speaker device and annular LED assembly

 #7
20210105557
2021-04-08

Horn loudspeakers

 #8
20200413185
2020-12-31

Horn for speakers and horn speaker

 #9
20200314546
2020-10-01

Speaker box and speaker

 #10
20200021909
2020-01-16

Upward firing loudspeaker having asymmetric dispersion for reflected sound rendering

 #11
20190394562
2019-12-26

Full acoustic horn and method for producing same

 #12
20190098155
2019-03-28

Sound emitting device, image forming apparatus and electronic apparatus

 #13
20190066655
2019-02-28

Resonance tube of horn

 #14
20190052969
2019-02-14

Adjustable-Angle Asymmetric High Frequency Acoustic Device

 #15
20190020947
2019-01-17

Headphone or earphone device

 #16
20180359593
2018-12-13

Loudspeaker device or system with controlled sound fields

 #17
20180294786
2018-10-11

Process for acoustic amplification in a mobile device application

 #18
20180242077
2018-08-23

Upward firing loudspeaker having asymmetric dispersion for reflected sound rendering

 #19
20180152773
2018-05-31

Speaker module

 #20
20180124501
2018-05-03

Acoustic impedance matching device and loudspeaker provided with such a device

 #21
20180115823
2018-04-26

System for reducing response anomalies in an acoustic pathway

 #22
20180091891
2018-03-29

Loudspeaker assembly

 #23
20180007465
2018-01-04

SPEAKER HAVING EXTENDED LOW FREQUENCY AND ELECTRONIC DEVICE USING THE SAME

 #24
20180007464
2018-01-04

Speaker structure with a loading hole

 #25
20170303033
2017-10-19

Speaker module

 #26
20170013348
2017-01-12

Arrayable loudspeaker with constant wide beamwidth

 #27
20170006373
2017-01-05

Vented acoustic enclosures and related systems

 #28
20160366510
2016-12-15

Manifold for multiple compression drivers with a single point source exit

 #29
20160080860
2016-03-17

Horn apparatus

 #30
20150382090
2015-12-31

Compact wideband bass and midrange horn-loaded speaker system

 #31
20150003657
2015-01-01

Inverse horn loudspeakers

 #32
20140185854
2014-07-03

Acoustic horn arrangement

 #33
20140093111
2014-04-03

Narrow mouth horn loudspeaker

 #34
20130015014
2013-01-17

Ceiling speaker assembly

 #35
20120189150
2012-07-26

Subwoofer structure and adjusting method

 #36
20120186902
2012-07-26

Method and apparatus for a loudspeaker assembly

 #37
20120177206
2012-07-12

Ear speaker device

 #38
20120163650
2012-06-28

Method and apparatus for a loudspeaker assembly

 #39
20120140971
2012-06-07

Inverse horn loudspeakers

 #40
20120080260
2012-04-05

Ceiling speaker assembly

 #41
20120061174
2012-03-15

ACOUSTIC SYSTEM

 #42
20110176703
2011-07-21

SPEAKER DEVICE

 #43
20110061965
2011-03-17

Method and apparatus for a loudspeaker assembly

 #44
20110061964
2011-03-17

Method and apparatus for a loudspeaker assembly

 #45
20110058700
2011-03-10

Inverse horn loudspeakers

 #46
20110007921
2011-01-13

Method and apparatus for a loudspeaker assembly

 #47
20090324003
2009-12-31

Method and apparatus for a loudspeaker assembly

 #48
20090321179
2009-12-31

Method and apparatus for a loudspeaker assembly

 #49
20090154755
2009-06-18

Electroacoustic transducer and ear speaker device

 #50
20090103758
2009-04-23

Acoustic system

 #51
20090087008
2009-04-02

Sound reproduction with improved low frequency characteristics

 #52
20080253604
2008-10-16

Ear speaker device

 #53
20080110692
2008-05-15

Convertible folded horn enclosure

 #54
20080099273
2008-05-01

Upward-exhausting corner horn enclosure

 #55
20060245612
2006-11-02

Speaker system with built-in storage of satellite speakers

 #56
20050133298
2005-06-23

Speaker box for use in back-load horn

 #57
20050115762
2005-06-02

Speaker Unit

 #58
20050047622
2005-03-03

Subwoofer with cascaded linear array of drivers

 #59
17390100
2022-10-11

Horn-loaded loudspeaker

 #60
14479237
2016-05-24

Orthogonal open back speaker system