ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,787, issued on May 27, was assigned to DAINICHI KASEI KOUGYOU Co. LTD. (Tokyo).
"Kitchen sink" was invented by Masatsugu Hirasawa (Tokyo) and Jun Hamada (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A kitchen sink 1 includes: a first sink including a first sink main body that includes a first bottom board, a pair of first side boards attached to short sides, and a pair of first long boards attached to long sides; and a second sink including a second sink main body that includes a second bottom board, a pair of second side boards attached to short sides, and a pair of second long boards attached to long sides. The first sink main body include...