ALEXANDRIA, Va., May 5 -- United States Patent no. 12,616,164, issued on May 5, was assigned to Unicharm Corp. (Ehime, Japan).
"Pet toilet system" was invented by Misato Nakatani (Kanonji, Japan), Yasuhiro Sasano (Kanonji, Japan) and Shinya Kaneko (Kanonji, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pet toilet system includes an excretion container, having a liquid-permeable bottom surface portion, that accommodates toilet sand, a tray, disposed below the excretion container, that accommodates an absorption sheet that absorbs liquid permeated through the liquid-permeable bottom surface portion, a lower container that holds the tray, and an upper container disposed above the excretion container. T...