Patent Number: 7,821,412

Title: Smoke detector

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.

Inventors: Fink; Richard Lee (Austin, TX)

Assignee: Applied Nanotech Holdings, Inc.

International Classification: G08B 17/10 (20060101)

Expiration Date: 2018-10-26 0:00:00