Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12390892 | Welding wires for obtaining giga-grade welds, welded structures manufacturing using same, and welding method thereof | Gyu-Yeol Bae | 2025-08-19 |
| 10370736 | Ultrahigh-strength steel for welding structure with excellent toughness in welding heat-affected zones thereof, and method for manufacturing same | Ho Soo Kim | 2019-08-06 |
| 10266929 | Ultrahigh-strength gas metal arc welded joint having excellent impact toughness, and solid wire for producing same | Dong-Ryeol Lee, Geug KIM | 2019-04-23 |
| 10065272 | Super high-strength flux cored arc welded joint having excellent impact toughness, and welding wire for manufacturing same | Jin Woo Lee, Dong-Ryeol Lee, Il-Wook Han, Hong-Kil Lee | 2018-09-04 |
| 7396423 | Method for manufacturing steel plate having superior toughness in weld heat-affected zone | Hae-Chang Choi | 2008-07-08 |
| 7105066 | Steel plate having superior toughness in weld heat-affected zone and welded structure made therefrom | Hae-Chang Choi | 2006-09-12 |
| 6966955 | Steel plate having TiN+ZrN precipitates for welded structures, method for manufacturing same and welded structure made therefrom | Hae-Chang Choi | 2005-11-22 |
| 6946038 | Steel plate having Tin+MnS precipitates for welded structures, method for manufacturing same and welded structure | Hae-Chang Choi, Wung-Yong Choo | 2005-09-20 |
| 6686061 | Steel plate having TiN+CuS precipitates for welded structures, method for manufacturing same and welded structure made therefrom | Hae-Chang Choi | 2004-02-03 |