1. Sung Jong Yoo, Dong-Yu Kim, Yung-Eun Sung, Jun-Ho Yum, Mi-Jeong Kim, “Antireflection and reflection coating using azobenzene compounds films”, Korea, patent number 10-0547251, Jan. 20, 2006.
2. Sung Jong Yoo, Ju Wan Lim, and Yung-Eun Sung, “Improved electrochromic devices with an inorganic solid electrolyte protective layer (고체 무기전해질 보호막을 이용한 전기변색소자 및 그 제조방법)”, Korea, patent number 10-0779245, Nov. 19, 2007.
3. Sung Jong Yoo, Ju Wan Lim and Yung-Eun Sung, "固体無機電解質の保護膜を用いたエレクトロクロミック素子及びその製造方法", Japan, patent number 4391472, Oct. 16, 2009.
4. Sung Jong Yoo, Yong Hun Cho, Yoon Hwan Cho, Hyun Seo Park and Yung-Eun Sung, “Fuel supply system in a PEMFC Fuel Cell and method thereof (일산화탄소를 포함한 수소의 연료이용시 고분자전해질 연료전지의 연료공급 시스템 및 그방법)”, Korea, patent number 10-0795397, Jan. 17, 2008.
5. Sung Jong Yoo, Hee-Young Park, Chul-Woo Ahn, and Yung-Eun Sung, “Pd electrocatalyst supported WO3@WC (WC core and WO3 shell) and fuel cell comprising the same”, Korea, patent number 10-2008-0004761, Sept. 2007.
6. Sung Jong Yoo, Cheol-Woo Ahn, Chang-Hak Choi, Sahn Nahm, and Yung-Eun Sung, “The manufacturing method of monolith electrode for Li-ion battery and monolith electrode manufactured by the same structure, components and manufacturing process of monolith electrode for Li-ion battery(리튬 이온 배터리용 일체형 전극 제조 방법 및 그 방법에 의해 제조된 일체형 전극)”, Korea, patent number 10-2008-0030200 Apr. 2008. 등록상태
7. Sung Jong Yoo, Sun Ha Park, Ju Wan Lim, Seong Uk Yun, Younghoon Chung, and Yung-Eun Sung, “The Electrode comprising porous nickel oxide thin layer, preparation method and use in electrochromic device and lithium battery (다공성 니켈 산화물 박막을 포함하는 전극, 그 제조 방법 및 전기변색 소자와 리튬 이차전지에서의 사용)”, Korea, patent number 10-0994485, Nov. 2010.
8. Sung Jong Yoo, Tae Yeol Jeon, Yong-Hun Cho, Kug-Seung Lee, and Yung-Eun Sung,“Synthesis methods of Nano-sized transition metal catalyst on a Carbon support (탄소에 담지된 전이금속 나노입자 촉매의 제조방법”, Korea, patent number 10-2009-0103747, Oct. 2009.
9. Sung Jong Yoo, Soo-Kil Kim, Borami Lim, Joung-Woon Kim, Seung Jun Hwang, Eun Ae Cho, Hyoung-Juhn Kim, Suk-Woo Nam, and Tae-Hoon Lim, “Method for preparing metal nano size particles, method for synthesizing carbon supported platinum catalyst and carbon supported platinum catalyst synthesized thereby (금속 나노입자 제조방법, 이를 이용한 탄소담지 백금촉매 합성방법 및 이에따라 합성된 탄소담지 백금촉매, 이를 이용하는 연료전지)”, Korea, patent number 10-2010-0010143, Feb. 3, 2010.
10. Sung Jong Yoo, Seung Jun Hwang, Soo-Kil Kim, Yung-Eun Sung, Suk-Woo Nam, Seong Ahn Hong, Tae-Hoon Lim, “Pt-Y alloy catalyst and method for preparing the same, fuel cell comprising the catalyst (백금-이트륨 합금 촉매 및 그 제조 방법, 상기 촉매를 포함하는 연료전지)”, Korea, patent number 10-2010-0033762, April 4, 2010.
11. Sung Jong Yoo, Seung Jun Hwang, Soo-Kil Kim, Suk-Woo Nam, Seong Ahn Hong, Tae-Hoon Lim, “Pd-Y alloy catalyst and method for preparing the same, fuel cell comprising the catalyst(팔라듐 및 이트륨 합금 촉매 및 그 제조 방법, 상기 촉매를 포함하는 연료전지)”, Korea, patent number 10-2010-0062142, June 29, 2010.
12. Sung Jong Yoo, Seung Jun Hwang, Soo-Kil Kim, Suk-Woo Nam, Seong Ahn Hong, Tae-Hoon Lim, “Pd-Y alloy catalyst and method for preparing the same, fuel cell comprising the catalyst (팔라듐 및 이트륨 합금 촉매 및 그 제조 방법, 상기 촉매를 포함하는 연료전지)”, US, patent number 12/884,853, September 17, 2010.
13. Sung Jong Yoo, Seung Jun Hwang, Soo-Kil Kim, Suk-Woo Nam, Seong Ahn Hong, Tae-Hoon Lim,“Carbon supported Pt-Ir alloy catalyst and method for synthesizing the same, electrode and fuel cell comprising the catalyst (탄소 담지 백금-이리듐 합금 촉매 및 그 합성 방법, 상기 합금 촉매를 포함하는 연료전지)”, Korea, patent number 10-2010-0062142, June 29, 2010.
14. Sung Jong Yoo, Seung Jun Hwang, Soo-Kil Kim, EunAe Cho, Jong Hyun Jang, Hyoung-Juhn Kim, Suk-Woo Nam, and Tae-Hoon Lim, “(연료 전지용 코어 쉘 구조 촉매 및 그 제조방법)”, Korea, patent number 10-2010-0120913, November 30, 2010.