Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5178688 | Carburized boron steels for gears | In-seok Yu, Gang-hyeong Kim | 1993-01-12 |
YJ
Yong-gueon Ji
Overall (All Time): #3,815,157 of 4,157,543Top 95%
1
Patents All Time