Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6346344 | Circuit breaker for secondary battery | E-Joo Hwang, Hyoung-Su Kim | 2002-02-12 |
| 6207320 | Cap assembly of secondary battery | Ea-Joo Hwang, Hyoung-Su Kim, Eung-Kil Choi | 2001-03-27 |
| 6050494 | Smart card | Si-Han Kim, Seung Bae Lee | 2000-04-18 |