H04R2307/00 - CPC Classification Index

ClassID:

232174 ⎘

H04R2307/00 - CPC Classification

Classification description:

Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by or , not provided for in any of its subgroups

Sub-classes:

H04R2307/021 » Diaphragms comprising cellulose-like materials, e.g. wood, paper, linen 93
H04R2307/023 » Diaphragms comprising ceramic-like materials, e.g. pure ceramic, glass, boride, nitride, carbide, mica and carbon materials 162
H04R2307/025 » Diaphragms comprising polymeric materials 323
H04R2307/027 » Diaphragms comprising metallic materials 166
H04R2307/029 » Diaphragms comprising fibres 161
H04R2307/201 » Damping aspects of the outer suspension of loudspeaker diaphragms by addition of additional damping means 53
H04R2307/204 » Material aspects of the outer suspension of loudspeaker diaphragms 86
H04R2307/207 » Shape aspects of the outer suspension of loudspeaker diaphragms 155

Recent Application in this class:

20230034424

2023-02-02

Diaphragm and loudspeaker

20220210543

2022-06-30

Dipole loudspeaker for producing sound at bass frequencies

20220201385

2022-06-23

Loudspeaker

20210306755

2021-09-30

Speaker diaphragm, speaker, speaker diaphragm manufacturing method, electronic device, and mobile body apparatus

20200221222

2020-07-09

High-water pressure waterproof microspeaker

20200068315

2020-02-27

Method of fabricating a miniature device having an acoustic diaphragm

20190052972

2019-02-14

Coil extension element

20180338207

2018-11-22

Method of fabricating a miniature device having an acoustic diaphragm

20170238098

2017-08-17

Diaphragm of sounding apparatus