Granted Patent
Utility
US 5,870,022 · App. 08/941,856
Passive infrared detection system and method with adaptive threshold and adaptive sampling
Inventors:
Keith D. Kuhnly, Paul G. Saldin
Patented Case
View Patent ↗
Granted: Feb 9, 1999
Filed: Sep 30, 1997
Inventors
Keith D. Kuhnly
Paul G. Saldin
Assignee (at issue)
Interactive Technologies, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.