Smoke detector
US7821412B2 · kind B2 · utility
13Cited by
13References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 14, 2007 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Jun 11, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/5313
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A smoke detector replaces the americium source of alpha particles with a field emission device using carbon nanotubes as the field emitters, or some other field emitter, in order to provide an ionization of the air potentially caring smoke particles through the smoke detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.