Speaker diaphragm, speaker, and production method of speaker diaphragm
US9027699B2 · kind B2 · utility
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7Claims
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Key dates
| Filing date | Feb 19, 2010 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | Jun 29, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2307/029
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker diaphragm contains a material obtained by adding a cycloolefin polymer resin to a carbon fiber-reinforced liquid crystal polymer. The speaker diaphragm having high sound velocity, a speaker, and a production method of the speaker diaphragm can thereby be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.