ALEXANDRIA, Va., June 9 -- United States Patent no. 12,649,844, issued on June 9, was assigned to KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY (Seoul, South Korea).

"Polymer composition, manufacturing method of cross-linkable polymer and cross-linkable polymer" was invented by Tae Ann Kim (Seoul, South Korea), Jae Hong Kim (Seoul, South Korea), Seungjun Chung (Seoul, South Korea), Jeong Gon Son (Seoul, South Korea), Jong Hyuk Park (Seoul, South Korea), Sang-Soo Lee (Seoul, South Korea) and Heesuk Kim (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a polymer composition including a linear polymer including a stress visualization molecule positioned at a center ...