Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Infrared intrusion detector with a multi-layer mirror

Infrared intrusion detector with a multi-layer mirror

US Patent 5608220 · Granted Mar 4, 1997

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Smoke detector methods and systems2021
Image-capturing device, in particular person-counting mechanism, having a housin2018
Optical smoke detection unit for a smoke detector, with two light-emitting diode2017
Scattered-light smoke detector with a two-color light-emitting diode2017
Evaluation of the security situation in a building by means of a radio tomograph2016
Systems and methods to classify moving airplanes in airports2016
Security system and danger sensor for monitoring danger parameters2006
Security system and danger sensor for monitoring danger parameters2006
Passive infrared detector2003
Optical smoke detector operating in accordance with the extinction principle and2002
Passive infrared intrusion detector and its use1999
Passive infrared intrusion detector and its use1999