Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6641274 | Surface light source device | Kayoko Masaki | 2003-11-04 |
| 6309080 | Surface light source device and liquid crystal display | Kayoko Watai | 2001-10-30 |
| 6074070 | Surface light source device of side light type | — | 2000-06-13 |
| 6024463 | Surface light source device of side light type with belt-like diffusible area | Tsuyoshi Ishikawa | 2000-02-15 |
| 5961197 | Surface light source device | Kayoko Watai | 1999-10-05 |
| 5833344 | Surface light source device of dual light flux generation | Takayuki Arai | 1998-11-10 |
| 5788356 | Surface light source device of side light type | Kayoko Watai, Kayoko Masaki | 1998-08-04 |