ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,638, issued on June 23, was assigned to SK INNOVATION Co. LTD. (Seoul, South Korea).

"Method and system for producing refined hydrocarbons from waste plastics" was invented by Sang Hwan Jo (Daejeon, South Korea), Yong Woon Kim (Daejeon, South Korea), Soo Kil Kang (Daejeon, South Korea), Ik Hwan Na (Daejeon, South Korea), Min Gyoo Park (Daejeon, South Korea), Min Woo Shin (Daejeon, South Korea), Seung Han Yu (Daejeon, South Korea), Jin Seong Jang (Daejeon, South Korea) and Yong Seong Jeong (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method and associated system for producing refined hydrocarbons from waste plastics. The met...