Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6457778 | Electro-power impact cell for plasma blasting | Kang Ok Lee, Hyeok Jung Kwon, Chul Yeong Kim, Kyoung-Jae Chung | 2002-10-01 |
| 6455808 | Pulse power system | Kang Ok Lee, Hyeok Jung Kwon, Chul Yeong Kim, Kyoung-Jae Chung | 2002-09-24 |
| 6327339 | Industrial x-ray/electron beam source using an electron accelerator | Kang Ok Lee, Hyeok Jung Kwon, Sang-Ho Kim | 2001-12-04 |
| 5853521 | Multi-cathode electron beam plasma etcher | Kil-ju Yun, Sang-Young Kim, Tae-Young Kim | 1998-12-29 |