박종구 조소혜 박승태 2024-01-12T08:35:18Z 2024-01-12T08:35:18Z 1998-10-21 https://pubs.kist.re.kr/handle/201004/82194 질화티탄　소결체의　제조방법 Patent 1998-10-21 1996-04-10 2305438 9607396.0 특허 한국과학기술연구원