Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10240219 | High frequency heat treatment method of ultra-high strength parts | Seung Hyun Hong | 2019-03-26 |
| 7220327 | Kick-down drum material and method of manufacturing the same | Doo Hwan Lee | 2007-05-22 |