ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,771,971, issued on Oct. 20, was assigned to Atlas-Apex Roofing Inc. (Etobicoke, Canada).

"System and method for monitoring temperature on a roof" was invented by Xuewen Zhu (Markham, Canada), Jiang Li (Thornhill, Canada), Jianbin Xiao (Richmond Hill, Canada) and John Petrachek (Etobicoke, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A temperature monitor, a system, and a method monitor temperature on a roof. The temperature monitor includes a base for attaching to the roof, a temperature sensor for detecting changes in temperature, the temperature sensor is attached to the base and positioned periodically on the base, and a roof sensor device a...