ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,562,440, issued on Feb. 24, was assigned to TOPPAN INC. (Tokyo).
"Terminal film for power storage device, and power storage device" was invented by Koji Murata (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A terminal film for a power storage device configured to cover an outer peripheral surface of a part of a metal terminal of the power storage device composed of a power storage device main body and the metal terminal electrically connected to the power storage device main body. The terminal film contains a hydrogen sulfide developer that changes color upon reacting with hydrogen sulfide. The hydrogen sulfide developer contains at least one ele...