ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,410,284, issued on Sept. 9, was assigned to LG CHEM Ltd. (Seoul, South Korea).
"Curable composition and optical material comprising cured product thereof" was invented by Hee Jung Choi (Daejeon, South Korea), Heon Kim (Daejeon, South Korea) and Jaeyoung Kim (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A curable composition comprising an episulfide compound represented by Chemical Formula 1 and an aromatic ring compound containing two or more hydroxyl groups represented by Chemical Formula 2 or 3, and an optical material including a cured product of the curable composition."
The patent was filed on May 21, 2020, under Applicatio...