Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6764191 | Illumination type keyboard | Shigetaka Douzono, Takefumi Inoue, Tetsuya Koma | 2004-07-20 |
| 6747402 | EL element lighting unit employing the same EL element | Minoru Hato | 2004-06-08 |
| 6686549 | Illuminated keyboard switch | Shigetaka Douzono | 2004-02-03 |