김경용 윤상옥 Inaguma Itoh Nakamura 2024-01-12T11:01:36Z 2024-01-12T11:01:36Z 1999-12-24 https://pubs.kist.re.kr/handle/201004/85081 고주파용　유전체　재료 Patent 1999-12-24 1995-05-26 3016002 7-128188 JA 특허 한국과학기술연구원