Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5850125 | Pseudospark switch having an insulator between electrodes | Byung-Ho Sung, Kyu-Hwan Lim, Hyun-kuk Shin, Jae-Hyun Sim | 1998-12-15 |
| 5773750 | Rock fragmentation system using gold schmidt method | Chwll-Hwa Park, Hak-won Kim, Byung-Ro Song, Woo-Sik Kim, Dae Seung Kim | 1998-06-30 |