ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,296, issued on Nov. 25.
"Bathtub drainage device" was invented by Ayako Momose (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A bathtub drainage device comprises: a plate, that can open and close an opening formed at a position corresponding to a position where a bather can sit on a floor of a bathtub in which hot water is stored, the plate on which at least buttocks of the bather can be placed; a rising part, that raises the plate closing the opening so that the opening is opened; an acquisition unit, that acquires information indicating a state of the bather; and a control unit, that controls the rising part so as to raise the pla...