오영주 정순효 하헌필 2024-01-12T13:02:50Z 2024-01-12T13:02:50Z 2019-03-20 https://pubs.kist.re.kr/handle/201004/87388 탈질환원촉매 Patent 2019-03-20 2008-01-21 1904227 06700111.5 특허 한국과학기술연구원