Acoustic diaphragm and method for manufacturing an acoustic diaphragm
US7708111B2 · kind B2 · utility
2Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2006 |
| Grant date | May 4, 2010 |
| Priority date | — |
| Expiry date | Nov 11, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2307/029
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is provided an acoustic diaphragm which includes a diaphragm base material composed of a paper article comprised of fine mica flakes, pulp fibers, and polyvinyl alcohol fibers and formed to be a multi-cellular structure; and a sheet material combined with the paper article or the diaphragm base material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.