Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6743541 | Monopolar cell pack of proton exchange membrane fuel cell and direct methanol fuel cell | Hyuk Chang | 2004-06-01 |
| 6723598 | Method for manufacturing aluminum oxide films for use in semiconductor devices | Kyong-Min Kim, Yong Yu | 2004-04-20 |