Seongmin Chang, LEE Kangheon, PARK Yunbum, LEE Gyumahn, Jongwook Kim, Kyeonghoon Jeong, LEE Jaeseon, SURH Hanbum, Kwanghyun Ahn, Jinseok Park, KIM Keungkoo, "L-shaped header of steam generator including spiral tube and a coupling structure of L-shaped header and tube." U.S. Patent No. 11,204,163. 21 Dec. 2021.

PARK Yunbum, LEE Gyumahn, Jongwook Kim, SURH Hanbum, Seongmin Chang, LEE Kangheon, Kwanghyun Ahn, LEE Jaeseon, Kyeonghoon Jeong, Jinseok Park, SONG JaeSeung, KIM Keungkoo, "Connecting apparatus for steam generator and integral reactor including the same." U.S. Patent Application No. 16/757,139.

Seongmin Chang, Kangheon Lee, Yunbum Park, Gyumahn Lee, Jongwook Kim, Kyeonghoon Jeong, Jaeson Lee, Hanbum Surh, Kwanghyun Ahn, Jinseok Park, Keungkoo Kim, “나선형 전열관을 포함하는 증기발생기의 L형상 헤더 및 L형상 헤더와 전열관의 결합 구조”, Korea Patent No. 10-2017-0103660, 2019. 02.