US Patent Issued to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT on May 26 for "Nonaqueous electrolyte secondary battery" (Japanese Inventors)

ALEXANDRIA, Va., May 26 -- United States Patent no. 12,640,365, issued on May 26, was assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT Co. LTD. (Osaka, Japan).

"Nonaqueous electrolyte secondary battery" was invented by Yuji Tani (Osaka, Japan), Yuji Goshima (Osaka, Japan) and Fumiharu Niina (Hyogo, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "This nonaqueous electrolyte secondary battery comprises a positive electrode, a negative electrode, and a nonaqueous electrolyte. The negative electrode includes a negative electrode core and a negative electrode mixture layer formed on at least one surface of the negative electrode core. The ratio (E1/E2) of the charging expansion rate (E1) to the dischar...