Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11299902 | Damping system utilizing space between stair chamber and inner building | Sang Hyun Lee, Lan Chung, Tae Won Park, Ji Eun ROH | 2022-04-12 |
| 11105111 | Buttress assembly for seismic reinforcing of building having non-bearing walls | Sang Hyun Lee, Taesung Eom, Ji Eun ROH | 2021-08-31 |