Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6709772 | Organic electrically conductive compound and an organic electroluminescent device including the compound | Norio Hasegawa, Akira Shiga | 2004-03-23 |
| 6706424 | Organic electrically conductive compound and an organic electroluminescent device including the compound | Norio Hasegawa, Akira Shiga | 2004-03-16 |