Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12404650 | Retaining wall structure | — | 2025-09-02 |
| 8716926 | Backlight unit using electron emission elements and a display apparatus having the same | Yu-Jeong Cho, Bok-Chun Yun | 2014-05-06 |
| 7452164 | Retaining wall system with interlocked wall-building units | — | 2008-11-18 |
| 7083364 | Retaining wall system with interlocked wall-building units | — | 2006-08-01 |