ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,529,618, issued on Jan. 20, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"Seal evaluation systems and methods for personal protection devices" was invented by Marie D. Manner (St. Paul, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system for a PPE device is disclosed that includes an infrared camera that captures an image sequence of a user wearing the PPE device. The system also includes a gas profile generator that analyzes the image sequence and generates a gas profile of the PPE device. The system also includes an analyzer that determines a status of the PPE device based on the gas profile. The system also includes a com...