ALPHA CHEM CO., LTD.; NAM, Hyun Goog; LIM, Dae Won; KIM, Jae Yong; PARK, Sang Mi; JANG, Seung Hee; LEE, Sang Youn; HAM, Ju Seok; CHO, Kyu Oh; KIM, Hyun Don Patent: WO2013/180376 A1, 2013 ; Location in patent: Paragraph 159; 160; 161 ;