ALEXANDRIA, Va., June 9 -- United States Patent no. 12,288,274, issued on April 29, was assigned to The Procter & Gamble Co. (Cincinnati).

"Environmental imaging and graphical mapping systems and methods for tracking cleaning activity in a physical environment" was invented by Kristyna Brittanny Theresa Mason (West Chester, Ohio), Nicole Ashley Rizzo (Cincinnati), Scott Kendyl Stanley (Mason, Ohio) and William Henry Truran (Franklin, N.J.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Environmental imaging and graphical mapping systems and methods are disclosed herein for tracking cleaning activity in a physical environment is disclosed. A sensor captures environmental image(s) depicting at least a portion o...