ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,174, issued on June 17, was assigned to TORAY ADVANCED MATERIALS KOREA INC. (Gumi-si, South Korea).
"Laminated polyester film" was invented by Seung Hwan Lee (Gumi-si, South Korea), Young Ho Kim (Gumi-si, South Korea), Jae Hoon Kim (Gumi-si, South Korea) and Jae Hee Seong (Gumi-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A laminated polyester film according to the present invention comprises: a core layer; and a sub-layer laminated on at least one surface of the core layer and containing a first particle and a second particle which are different components, wherein an average diameter of the first particle is 6 to 20 times of an a...