ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,472,723, issued on Nov. 18, was assigned to Dai Nippon Printing Co. Ltd. (Tokyo).

"Casing material for power storage device, production method therefor, and power storage device" was invented by Daisuke Yasuda (Tokyo), Makoto Amano (Tokyo) and Takanori Yamashita (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A casing material for a power storage device, including a laminate that includes, in order, at least a base material layer, a barrier layer, and a heat-fusible resin layer. The heat-fusible resin layer includes a single layer or a plurality of layers. The heat-fusible resin layer includes at least one layer having a hardness of at least 70 MP...