ALEXANDRIA, Va., June 16 -- United States Patent no. 12,307,838, issued on May 20, was assigned to CareBand Inc. (Chicago).

"Method and system for connectivity and control of a hazard-prone environment using a low power wide area network" was invented by Adam G. Sobol (Dayton, Ohio), Paul Sheldon (Arlington Heights, Ill.), Harish Natarahjan (Hoffman Estates, Ill.), Joseph T. Kreidler (Arlington Heights, Ill.), Brian A. Donlin (Chicago), Jon G. Ledwith (Palatine, Ill.), Patrick J. McVey (Wheeling, Ill.), Ross D. Moore (Winnetka, Ill.), Peter Nanni (Algonquin, Ill.), Dwayne D. Forsyth (Deer Park, Ill.), Todd Sobol (Dayton, Ohio), John D. Reed (Dayton, Ohio), Reid B. Erekson (Arlington Heights, Ill.), Sam H. Viesca (Lafayette, Colo.) and Stev...