Micromachined horn
US8231795B2 · kind B2 · utility
15Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 1, 2009 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Aug 27, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N39/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An acoustic device includes a transducer formed on a first surface of a substrate and an acoustic horn formed in the substrate by a dry-etching process through an opposing second surface of the substrate. The acoustic horn is positioned to amplify sound waves from the transducer and defines a non-linear cross-sectional profile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.