ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,555,769, issued on Feb. 17, was assigned to PANASONIC ENERGY Co. LTD. (Osaka, Japan).

"Nonaqueous electrolyte secondary battery" was invented by Akihiro Katogi (Tokushima, Japan), Noriko Sugii (Tokushima, Japan), Takamitsu Tashita (Tokushima, Japan), Fumikazu Mizukoshi (Osaka, Japan) and Mai Yokoi (Tokushima, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A negative electrode comprises a negative electrode collector, a first negative electrode mixture layer that is provided on the surface of the negative electrode collector, and a second negative electrode mixture layer that faces the positive electrode; the first negative electrode mixture layer ...