ALEXANDRIA, Va., May 19 -- United States Patent no. 12,630,686, issued on May 19, was assigned to Lotte Chemical Corp. (Seoul, South Korea).

"Polyolefin-based resin foam, and molded product produced therefrom" was invented by Jun Hyeok Jang (Uiwang-si, South Korea), Yong Jin Kwon (Uiwang-si, South Korea), Se Yeon Eom (Uiwang-si, South Korea) and Sung Hwan Lim (Uiwang-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to: a polyolefin-based resin foam including a polyolefin-based resin and a conductive filler containing carbon nanotubes and carbon black, wherein the weight ratio of the carbon nanotubes to the carbon black is about 1:1.5 to about 1:5; and a molded prod...