Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10907230 | Ultra high-strength and high-ductility steel sheet having excellent yield ratio and manufacturing method therefor | Joo-Hyun RYU, Sung-Hak Lee, Won-Hwi Lee, Kyoo-Young Lee, Sea-Woong Lee | 2021-02-02 |