Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6553686 | Grain roasting apparatus | Sang Joon Yoon | 2003-04-29 |
| 6206080 | Die casting apparatus for a rotor | — | 2001-03-27 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6553686 | Grain roasting apparatus | Sang Joon Yoon | 2003-04-29 |
| 6206080 | Die casting apparatus for a rotor | — | 2001-03-27 |