ALEXANDRIA, Va., June 16 -- United States Patent no. 12,308,394, issued on May 20, was assigned to SANYO Electric Co. Ltd. (Osaka, Japan).
"Rectangular secondary battery" was invented by Tomoyuki Yamada (Hyogo, Japan), Naoki Imachi (Hyogo, Japan), Daisuke Ikeda (Hyogo, Japan) and Kazuaki Tamura (Hyogo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rectangular secondary battery is provided with: a rectangular exterior body having an opening, a bottom part, a first lateral wall, a second lateral wall, a third lateral wall, and a fourth lateral wall; a sealing plate for sealing the opening; and a flat wound electrode body obtained by winding a positive electrode plate and a negative electrode plate wit...