Transparent parametric emitter
US9351083B2 · kind B2 · utility
5Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2015 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | Jan 23, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A transparent ultrasonic emitter includes a first transparent conductive layer; a second transparent conductive layer; and a plurality of transparent spacers disposed between the first and second transparent layers conductive of the ultrasonic audio speaker, the transparent spacers having a thickness and being arranged to define an open area between the first and second transparent layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.