ALEXANDRIA, Va., July 16 -- United States Patent no. 12,362,397, issued on July 15, was assigned to NIPPON ELECTRIC GLASS Co. LTD. (Shiga, Japan).

"Bipolar all-solid-state sodium ion secondary battery" was invented by Hideo Yamauchi (Otsu, Japan) and Kei Tsunoda (Otsu, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a bipolar all-solid-state sodium ion secondary battery that can increase the voltage without impairing safety. A bipolar all-solid-state sodium ion secondary battery includes: a plurality of all-solid-state sodium ion secondary batteries 1 in each of which a positive electrode layer 3 capable of absorbing and releasing sodium, a solid electrolyte layer 4 made of a sodium ion-cond...