Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10310676 | Image projection apparatus and operation method thereof | Sangho Lee, Kyoungjoung Kim, Kyungho Lee, Hyunhee You, Hyunsik Yoon +4 more | 2019-06-04 |
| 7539294 | System and method for providing prepaid telecommunication services | Eric Moon, Johng Phil Lee, Jae Heung Park, Jong Phil Shin, Han Kwang Cho | 2009-05-26 |
| 7295658 | System and method for providing prepaid telecommunication services | Eric Moon, Johng Phil Lee, Jae Heung Park, Jong Phil Shin, Han Kwang Cho | 2007-11-13 |
| 6873690 | System and method for providing prepaid telecommunication services | Eric Moon, Johng Phil Lee, Jae Heung Park, Jong Phil Shin, Han Kwang Cho | 2005-03-29 |