Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11203795 | Ultra-high strength steel plate having excellent formability and hole-expandability, and method for manufacturing same | Kyoo-Young Lee, Joo-Hyun RYU, Won-Hwi Lee, Byun-Mok Hwang | 2021-12-21 |
| 11186892 | Hot rolled steel sheet having excellent strength and elongation | Sung-Hak Lee, Kyoo-Young Lee, Joo-Hyun RYU, Seok-Su SOHN, Hyung Soo Lee +1 more | 2021-11-30 |
| 10907230 | Ultra high-strength and high-ductility steel sheet having excellent yield ratio and manufacturing method therefor | Joo-Hyun RYU, Nack-Joon Kim, Sung-Hak Lee, Won-Hwi Lee, Kyoo-Young Lee | 2021-02-02 |