Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10076814 | Multiple heat source-type preheating device for machining apparatus | Wan-sik Woo, Won-jung Oh | 2018-09-18 |
| 9238286 | Method of controlling laser beam preheating temperature of surface of workpiece | Dong Hyeon Kim | 2016-01-19 |
| 9041267 | Preload control device of magnetic bearing | Dong Hyeon Kim | 2015-05-26 |