Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6721516 | Image forming apparatus | Katsuhiro Aoki, Tsukuru Kai, Osamu Ariizumi, Hisashi Shoji, Takashi Hodoshima +1 more | 2004-04-13 |
| 6686845 | Driver's arousal level estimating apparatus for vehicle and method of estimating arousal level | — | 2004-02-03 |