Issued Patents 2002
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6492041 | Organic electroluminescent device having high efficient luminance | Hitoshi Ishiskawa, Satoru Toguchi | 2002-12-10 |
| 6476550 | Organic Electroluminescent device with a defraction grading and luminescent layer | Hitoshi Ishikawa, Satoru Toguchi | 2002-11-05 |
| 6468675 | Organic electroluminescent device having high luminance efficiency | Hitoshi Ishikawa, Satoru Toguchi | 2002-10-22 |
| 6465116 | Organic electroluminescent device | Hitoshi Ishikawa, Satoru Toguchi, Yukiko Morioka | 2002-10-15 |
| 6432887 | Rolling device | Toyohisa Yamamoto, Kenichi Iso | 2002-08-13 |