Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |