- “Fuel Additive Auto Injection Control System for Shipping Engine and Controlling Method Thereo”, Kwangyeol Ryu, Sangyong Choi, Jungsoo Oh, Sangil Lee, and Hwaseop Lee, Feb. 19, 2014, Korea Patent No. 10-1533238. (registered)
- “System for Scouting Supplier and Method Thereof”, Hyunbo Cho, Kwangyeol Ryu, Bohyun Kim, Youngjae Choi, Kwanyoung Im, Kyungdoc Kim, Jaehun Lee, Inyoung Koh, Boram Jo, Kiwook Jung, Sanghyeon Koh, and Taehun Kim, Jul. 01, 2014, Korea Patent No. 10-1417395. (registered)
- “System and Method for On-line Design Cooperation”, Seokwoo Lee, Wonpyo Hong, Sungho Nam, Kwangyeol Ryu, and Honzong Choi, Nov. 06, 2008, Korea Patent No. 10-0868478-0000. (registered)
- “Arranging Device and Method for Bonding”, Honzong Choi, Wonpyo Hong, Sungho Nam, Youngjae Choi, Kwangyeol Ryu, and Seokwoo Lee, Dec. 12, 2007, Korea Patent No. 10-0787095-0000. (registered)
- “Grinding Device and Arranging Method for Chucking Pins of the same”, Seokwoo Lee, Honzong Choi, Youngjae Choi, Kwangyeol Ryu, and Eungoo Kang, Dec. 11, 2007, Korea Patent No. 10-0786634-0000. (registered)
- “Clamping Device for Machining Lens and Centering Method of Lens”, Seokwoo Lee, Honzong Choi, Youngjae Choi, Kwangyeol Ryu, and Namhwan Huh, Sep. 28, 2007, Korea Patent No. 10-0763840-0000. (registered)
- “External Design Evaluation System(Computer Aided Styling Conference)”, Seokwoo Lee, Wonpyo Hong, Kwangyeol Ryu, Youngjae Choi, and Kihyung Song, Mar. 6, 2007, Korea Program No. 2007-01-155-001142. (registered)
- “Change Management System of Production Processes”, Seokwoo Lee, Honzong Choi, Kwangyeol Ryu, Kyubong Lee, and Bohyun Kim, Mar. 6, 2007, Korea Program No. 2007-01-155-001138. (registered)
- “Estimation System of Production Delivery and Costs”, Seokwoo Lee, Wonpyo Hong, Kwangyeol Ryu, Dongyoon Lee, and Kihyung Song, Mar. 6, 2007, Korea Program No. 2007-01-155-001137. (registered)
- “Distribution and Management System of CAD Drawings”, Seokwoo Lee, Honzong Choi, Kwangyeol Ryu, Sungho Nam, and Eungoo Kang, Mar. 6, 2007, Korea Program No. 2007-01-155-001135. (registered)
- “Program for Selecting Optimal Condition in High-speed Machining Database”, Seokwoo Lee, Sungho Nam, Youngjae Choi, Kwangyeol Ryu, and Haewoon Kang, Aug. 31, 2006, Korea Program No. 2006-01-155-004456. (registered)