ALEXANDRIA, Va., June 18 -- United States Patent no. 12,325,763, issued on June 10, was assigned to LG Chem Ltd. (Seoul, South Korea).

"Catalyst composition and method for preparing polyisobutene using the same" was invented by Dong Hyun Jo (Daejeon, South Korea), Seong Beom Heo (Daejeon, South Korea), Won Hee Kim (Daejeon, South Korea), Jin Lee (Daejeon, South Korea), Gyeong Shin Choi (Daejeon, South Korea) and Hee Jeong Kim (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a catalyst composition including an oxonium ion-based catalyst represented by the following Formula 1, and an additive, and a method for preparing polyisobutene using the same: wherein ...