ALEXANDRIA, Va., May 26 -- United States Patent no. 12,638,432, issued on May 26.
"Vaporized aerosol detection network" was invented by Loucinda C. Bistany (Methuen, Mass.), William D. Hargett (Chelmsford, Mass.) and Stephen S. Milt (Winchester, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A distributed security system includes a detection unit disposed at a first location. The detection unit includes a particle sensor that is configured to detect a particle count in first location. The detection unit also includes a housing enclosing a portion of the particle sensor. The security system also includes a camera disposed at a second location and having a field of vision encompassing the first location....