ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,384,870, issued on Aug. 12, was assigned to MITSUI CHEMICALS INC. (Tokyo).

"Method for setting polymerization condition and method for manufacturing optical material" was invented by Masayuki Furuya (Arao, Japan), Takeshi Nishimura (Yanagawa, Japan), Shinsuke Ito (Omuta, Japan) and Tatsuya Ogawa (Omuta, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for setting polymerization condition includes a physical property acquiring step of, when heating a composition including a polymerization-reactive compound and a polymerization catalyst and/or a polymerization initiator and retaining heat at a predetermined temperature, acquiring a physical p...