Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5858562 | Organic thin film electroluminescent device | Koji Utsugi, Akira Hirano, Naoyasu Ikeda | 1999-01-12 |
| 5667925 | Electrophotographic photosensitive product | Akira Hirano | 1997-09-16 |
| 5308726 | Electrophotographic photosensitive element | Akira Hirano | 1994-05-03 |