ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,491,478, issued on Dec. 9, was assigned to LOTTE CHEMICAL Corp. (South, South Korea).

"Polyolefin resin composition for porous film" was invented by Sun Young Jung (Daejeon, South Korea), Chang Kyu Son (Daejeon, South Korea), Min Suk Jung (Daejeon, South Korea), Hee Won Cho (Daejeon, South Korea) and Kyung Hoon Kim (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are a polyolefin resin composition usable in manufacturing a single-layered dry porous membrane having excellent meltdown and shutdown properties, and a porous membrane using the polyolefin resin composition. The present invention provides a polyolefin resin composi...