US Patent Issued to Sumitomo Chemical on June 17 for "Nonaqueous electrolyte secondary battery separator, nonaqueous electrolyte secondary battery member, and nonaqueous electrolyte secondary battery" (Japanese Inventors)

ALEXANDRIA, Va., June 19 -- United States Patent no. 12,334,590, issued on June 17, was assigned to Sumitomo Chemical Co. Ltd. (Tokyo).

"Nonaqueous electrolyte secondary battery separator, nonaqueous electrolyte secondary battery member, and nonaqueous electrolyte secondary battery" was invented by Akinori Bando (Ichihara, Japan), Daisuke Yamaguchi (Ichihara, Japan), Atsuhiro Takata (Osaka, Japan) and Yuki Yoneguchi (Niihama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A nonaqueous electrolyte secondary battery separator having excellent impact absorbency includes a polyolefin porous film having a full width W at half maximum of a peak of an MD component of not less than 30 degrees. The full width W...