Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12188105 | Steel material for welding steel pipe having excellent low-temperature toughness, steel material that has undergone weld heat treatment, and method for manufacturing same | — | 2025-01-07 |
| 11639535 | Steel material for welded steel pipe, having excellent longitudinal uniform elongation, manufacturing method therefor, and steel pipe using same | — | 2023-05-02 |
| 11519045 | High-strength steel having excellent low-yield-ratio characteristics, and manufacturing method therefor | — | 2022-12-06 |
| 9238849 | Steel sheet for an oil sand slurry pipe having excellent abrasion resistance, corrosion resistance, and low-temperature toughness and method for manufacturing same | Seong-Ung Koh | 2016-01-19 |