Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11453933 | High-strength steel material having enhanced resistance to crack initiation and propagation at low temperature and method for manufacturing the same | Kyung-Keun Um, Woo-Yeol Cha, Jin-Woo Chae | 2022-09-27 |
| 11268175 | High-strength steel having excellent fracture initiation resistance and fracture propagation arrestability at low temperature and method of manufacturing the same | Kyung-Keun Um, Woo-Yeol Cha, Jin-Woo Chae | 2022-03-08 |
| 11136653 | High-strength steel material having excellent low-temperature strain aging impact properties and welding heat-affected zone impact properties and method for manufacturing same | Kyung-Keun Um | 2021-10-05 |
| 10689735 | High strength steel sheet having excellent cryogenic temperature toughness and low yield ratio properties, and method for manufacturing same | Sung Ho JANG, Ki-Hyun Bang | 2020-06-23 |
| 9255305 | High-strength steel sheet having superior toughness at cryogenic temperatures, and method for manufacturing same | Sang-Ho Kim, Ki-Hyun Bang, In-Shik Suh | 2016-02-09 |