Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10090058 | Semiconductor device | Sung-Soo Chi, Dong Woo Lyu, Sang Kyung Shin, Kwang Soo Ahn, Sung Su Cha | 2018-10-02 |
| 6274425 | Method for manufacturing semiconductor device | — | 2001-08-14 |
| 5579300 | Private automatic branch exchange for integrated services digital network | Sang-Rok Lee | 1996-11-26 |