ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,733, issued on June 3, was assigned to SAKURA SEIKI Co. LTD. (Nagano, Japan) and SAKURA FINETEK JAPAN Co. LTD. (Tokyo).
"Tissue piece treating apparatus" was invented by Tadashi Tofukuji (Nagano, Japan) and Moe Okabe (Nagano, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A tissue piece treating apparatus including: a treating tank in which immersion of a tissue piece is performed by a chemical solution being supplied thereto; a communication passage connected to the treating tank; one or a plurality of chemical solution bottles connected to the communication passage; and a pump operable to cause the treating tank to be at a negative pressure t...