US Patent Issued to Sumitomo Chemical on May 5 for "Separator including mixed layer of heat-resistant resin and porous polyolefin film, and nonaqueous electrolyte secondary battery including the same" (Japanese Inventors)

ALEXANDRIA, Va., May 5 -- United States Patent no. 12,620,675, issued on May 5, was assigned to Sumitomo Chemical Co. Ltd. (Tokyo).

"Separator including mixed layer of heat-resistant resin and porous polyolefin film, and nonaqueous electrolyte secondary battery including the same" was invented by Riku Matsumine (Niihama, Japan) and Akihiko Shin (Niihama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "As a nonaqueous electrolyte secondary battery separator which has excellent heat resistance and excellent battery performance, provided is a nonaqueous electrolyte secondary battery separator including a mixed layer which contains a heat-resistant resin and a porous base material that includes a polyolefin...