ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,489,149, issued on Dec. 2, was assigned to PRIME PLANET ENERGY & SOLUTIONS INC. (Tokyo).
"Secondary battery" was invented by Daichi Kobori (Kobe, Japan), Tomoyuki Yamada (Kobe, Japan) and Kazutaka Mita (Kobe, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a secondary battery that has a wound electrode assembly that has been precisely wound. A secondary battery is provided with a wound electrode assembly in which a positive electrode plate and a negative electrode plate are wound with a separator interposed therebetween, and is provided with a battery case that houses the wound electrode assembly. The separator has a strip-shaped base ma...