- 19 local patents (South Korea) and 2 U.S patents for mobile phone technologies.
- K.S. Jung, H.M. Kim, S.J. Lee, N.C. Park, S.I. Kang, and Y.P. Park, “Design of optical path of pick up for small form factor optical disk drive.” Microsystem Technologies, 11, 2005, 1041-1047
- T.S. Song, H.D. Kwon, Y.J. Yoon, K.S. Jung, N.C. Park and Y.P. Park, “Aspherical solid immersion lens of integrated optical head for near-field recording.” Japanese Journal of Applied Physics, 42, 2003, 1082-1089