Jungho Hur, Jaeyeong Park, Sungyeol Choi, "Zirconium Recovery Process and Method for Treating Waste Zirconium (지르코늄 회수 공정 및 폐 지르코늄 처리방법)," 10-2577113, September 6, 2023.

Wonseok Yang, Minho Lee, James Amphlett, Sungyeol Choi, "Pool Scrubbing System for Removing Fine Dust or Radionuclide (미세먼지 또는 방사성 핵종 제거용 풀 스크러빙 시스템)," 10-2549803, June 27, 2023.

Il Soon Hwang, Sungjune Sohn, Jaeyeong Park, Byunggi Park, Byungchan Han, Sungyeol Choi, “Methods and Devices using Liquid Metal including Bi or Pb or Bi-Pb Alloy for Separating Actinides and Rare Earth Elements in High-level Radioactive Molten Salts from Pyroprocessing (비스무스 또는 비스무스-납 합금 액체금속을 이용하여 파이로 프로세싱에서 발생하는 고준위 방사성 용융염에 포함된 악티늄족원소군(群)과 희토류원소군을 분리하는 방법 및 이를 이용한 분리 장치),” 10-1693775, January 2, 2017.

Sungyeol Choi, Won Il Ko, “Apparatus for Providing Nuclear Fuel Cycle for Nuclear Power Plant and Method Thereof (원자력발전소의 핵연료주기 제공 방법 및 그 장치),” 10-1614020, April 14, 2016.

Kwang-Rag Kim, Jae-Hoo Jung, Seungwoo Paek, Joon-Bo Shim, Tack-Jin Kim, Kweon-ho Kang, Jaeyeong Park, Sungyeol Choi, Il Soon Hwag, “Electrolytic Recovery Device, (전해 회수 장치)” 10-1428860, August 4, 2014.

Il Soon Hwang, Kun Jai Lee, Byung-Gi Park, Ji Hyun Kim, Kyung Woo Yi, Hyo On Nam, Sungyeol Choi, Judong Bae, Hyo Sook Jung, “Method for Decontaminating High Level Wastes Arising from High Energy Radiation Facilities to Low-and-intermediate Level Radioactive Wastes (고에너지 방사선 시설에서 발생하는 고준위 폐기물을 중저준위 폐기물로 정화하는 방법),” 10-2011-0087907, August 3, 2012.

Il Soon Hwang, Chang Hyo Kim, Myung Hyun Kim, Bong Yoo, Han-Gyu Joo, Jun Lim, Dong Yoon Han, Sungyeol Choi, Jae Hyun Cho, “Proliferation-resistant Accident-tolerant Secure Capsular Autonomous Reactor, PASCAR (핵비확산적 안전ㆍ보안식 자동제어 캡슐형 원자로),” 10-1016710, February 15, 2011.