ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,774,593, issued on Oct. 27, was assigned to Kohler Co. (Kohler, Wis.).

"Clean drain systems" was invented by Andrew James Stokes (Mazomanie, Wis.), Andrew Smith (Sheboygan, Wis.), Erich Slothower (Mill Valley, Calif.), Michael Smith (Plymouth, Wis.) and Vikas Salunke (Kohler, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure is generally directed towards a clean drain system. The clean drain system includes drain stopper system, a seal, and a flange. The seal is coupled to the flange. The drain stopper system is positioned through the seal. The drain stopper system further includes a drain cover, a drain housing, and a basket. T...