Issued Patents 2004
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6823163 | Image forming apparatus including an electric field having an oscillation component between an image carrier and a developer carrier | Naomi Sugimoto, Tsukuru Kai, Nobutaka Takeuchi | 2004-11-23 |
| 6819901 | Developing method and a developing device for image forming apparatus | Kei Yasutomi, Tsukuru Kai, Nobutaka Takeuchi | 2004-11-16 |
| 6782225 | Image forming apparatus having plurality of developing sections with particular magnetic flux density | Tsukuru Kai | 2004-08-24 |
| 6778805 | Image forming apparatus having a developing device with a magnet brush | Tsukuru Kai, Nobutaka Takeuchi, Kei Yasutomi, Takeyoshi Sekine, Osamu Ariizumi | 2004-08-17 |
| 6757509 | Image forming apparatus | Tsukuru Kai, Kei Yasutomi, Nekka Matsuura, Nobutaka Takeuchi, Hirokatsu Suzuki | 2004-06-29 |
| 6721516 | Image forming apparatus | Katsuhiro Aoki, Tsukuru Kai, Hajime Oyama, Osamu Ariizumi, Takashi Hodoshima +1 more | 2004-04-13 |