이택동 황기현 나종갑 2024-01-12T11:01:09Z 2024-01-12T11:01:09Z 1997-01-17 https://pubs.kist.re.kr/handle/201004/85061 투명열절연　다층박막　및　그　제조방법 Patent 1997-01-17 1993-06-03 110956 93-10000 KO 특허 한국과학기술연구원