Diaphragm for speaker, speaker using the diaphragm, electronic device using the speaker, and speaker-mounted device
US8340342B2 · kind B2 · utility
3Cited by
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18Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 7, 2009 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Apr 19, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2307/029
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker diaphragm containing resin and carbonized bamboo material with a large degree of flexibility in setting physical properties, moisture-proof reliability and strength secured, superior appearance, and productivity and dimensional stability increased, which allows making characteristics and sound highly accurately, and designing with great originality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.