AMOREPACIFIC CORPORATION; Shin, Song Seok; Hong, Yong Deog; Byoun, Kyoung Hee; Park, Mi Young; Choi, Jin Kyu; Park, Yang Hui; Bae, Il Hong; Joo, Yung Hyup; Lim, Kyung Min; Park, Young Ho
Patent: US2013/158025 A1, 2013 ;