Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6806640 | Organic electroluminescence device having current injection layer between light emitting layer and cathode | Hiroyuki Okada, Shigeki Naka, Hiroyoshi Onnagawa | 2004-10-19 |