1. Ho Jin Ma, Jae-Woong Ko, Mi-Ju Kim, Ha-Neul Kim, Young-Jo Park, and Jae Wook Lee, “High-entropy oxide ceramics sintered body with plasma resistance and preparation method thereof”, 101029.1. USWO, US [출원]
2. Ho Jin Ma, Jae-Woong Ko, Mi-Ju Kim, Ha-Neul Kim, Young-Jo Park, Yu-Been Shin, and Jae Wook Lee, “High-entropy oxide particle having single phase and manufacturing method thereof”, 10-2025-0097886, Korea [출원]
3. Ho Jin Ma, Young-Jo Park, Jae-Woong Ko, Ha-Neul Kim, Jae-Wook Lee, Mi-Ju Kim, and Hae-Seong Cho, “Plasma etching device parts for semiconductor manufacturing including Yttria-YAM composite layer sinter-bonded body and manufacturing method thereof)”, 10-2025-0078027, Korea [출원]
4. Ho Jin Ma, Young-Jo Park, Jae-Woong Ko, Ha-Neul Kim, Jae-Wook Lee, Mi-Ju Kim, and Su-Been Ham, “산화마그네슘-산화가돌리늄 복합 소결체를 포함하는 반도체 제조용 플라즈마 식각 장치 부품 및 그 제조방법(Plasma etching device parts for semiconductor manufacturing including magnesium oxide-gadolinium oxide composite sintered body and manufacturing method thereof)”, 10-2846768, Korea [등록]
5. Ho Jin Ma, Young-Jo Park, Jae-Woong Ko, Ha-Neul Kim, Jae-Wook Lee and Mi-Ju Kim, “High-entropy ceramic sintered body with plasma resistance and preparation method thereof”, 10-2024-0030780, Korea [출원]
6. Young-Jo Park, Jae-Woong Ko, Ha-Neul Kim, Ho Jin Ma Jae-Wook Lee and Mi-Ju Kim, “Sintering aid of binary component for MgO sintering”, 10-2023-0160930, Korea [출원]
7. Young-Jo Park, Jae-Woong Ko, Ha-Neul Kim, Ho Jin Ma Jae-Wook Lee and Mi-Ju Kim, “Sintering aid of ternary component for MgO sintering”, 10-2023-0162444, Korea [출원]
8. Young-Jo Park, Jae-Woong Ko, Ha-Neul Kim, Ho Jin Ma Jae-Wook Lee and Mi-Ju Kim, “과량의 알루미늄을 함유한 YAG 소결체, 이를 포함하는 플라즈마 식각 장치용 부재 및 이의 제조방법(YAG sintered body comprising excess Al, member for plasma etching device including the same, and manufacturing method thereof)”, 10-2833575, Korea [등록]
9. Ha-Neul Kim, Young-Jo Park, Jae-Woong Ko, Ho Jin Ma and Jae-Wook Lee, “고열전도 상압 소결 질화규소 소결체 제조용 조성물 및 이를 이용한 질화규소 소결체의 제조방법(Composition for preparation of pressureless sintered silicon nitride sintered body with high-thermal conductivity and preparation method of silicon nitride body using the same)”, 10-2793751, Korea [등록]
10. Ho Jin Ma, Young-Jo Park, Jae-Woong Ko, Ha-Neul Kim, Jae-Wook Lee and Mi-Ju Kim, “이트륨계 복합 소결체를 포함하는 반도체 제조용 플라즈마 식각 장치 부품 및 그 제조방법(Plasma etching device parts for semiconductor manufacturing including yttrium-based composite sintered body and manufacturing method thereof)”, 10-2022-0112622, Korea  [등록]
11. Ha-Neul Kim, Young-Jo Park, Jae-Woong Ko, Ho Jin Ma, Jae-Wook Lee and Hyeon-Myeong Oh, “열간 가압 소결에 의한 투광성 이트리아의 제조 방법, 이의 방법으로 제조된 투광성 이트리아, 및 이를 포함하는 레이저 발진 소자(Preparation method of transparent yttria through hot-press sintering, transparent yttria prepared by the same, and laser oscillator comprising the same)”, 10-2782904, Korea [등록]
12. Young-Jo Park, Jae-Woong Ko, Mi-Ju Kim, Ha-Neul Kim, Ho Jin Ma and Jae-Wook Lee, “저온 상압소결 고강도 질화규소 세라믹 조성물, 질화규소 세라믹 및 이의 제조방법(Low-temperature pressureless sintered Si₃N₄ceramics composition with high hardness, Si₃N₄ ceramics and preparation method thereof)”, 10-2883857, Korea [등록]
13. Ho Jin Ma and Do Kyung Kim, “Nanocomposite ceramics for high power infrared lasers”, 10-2249369, Korea [등록]
14. Seung-Jun Lee, Ho Jin Ma, Joonkyo Jung, Jonghwa Shin, Do Kyung Kim and Jinwoo Park, “Mie 공진을 활용한 고온 유전율 측정 시스템 및측정 방법”, 10-2138266, Korea [등록]