Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10655196 | Austenitic steel having excellent machinability and ultra-low temperature toughness in weld heat-affected zone, and method of manufacturing the same | Soon-Gi LEE, Jong-Kyo Choi, Young Hwan Park, Hyun-Kwan Cho, In-Shik Suh +2 more | 2020-05-19 |
| 9650703 | Wear resistant austenitic steel having superior machinability and toughness in weld heat affected zones thereof and method for producing same | Soon-Gi LEE, Jong-Kyo Choi, Hong-Ju Lee, In-Shik Suh, In-Gyu Park | 2017-05-16 |
| 9394579 | High-strength steel material having outstanding ultra-low-temperature toughness and a production method therefor | Kyung-Keun Um, Jong-Kyo Choi, Woo-Kil Jang, Hyun-Kwan Cho | 2016-07-19 |