US Patent Issued to VEHICLE ENERGY JAPAN on Sept. 2 for "Lithium ion secondary battery and method for manufacturing same" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,406,983, issued on Sept. 2, was assigned to VEHICLE ENERGY JAPAN INC. (Ibaraki, Japan).

"Lithium ion secondary battery and method for manufacturing same" was invented by Hiroyuki Toshiro (Hitachinaka, Japan) and Yasuo Arishima (Hitachinaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A lithium ion secondary battery with increased durability and capacity includes a positive electrode, a negative electrode, and a separator. The positive electrode includes a current collector foil and an electrode mixture layer disposed on a surface of the current collector foil. The positive electrode mixture layer includes a superficial layer portion and a deep ...