Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8364055 | Image forming apparatus | Takuji Yamamoto, Hideaki Ikeda, Shinji Yanase | 2013-01-29 |
| 6897982 | Image-writing device and method and image-forming apparatus reducing dot width variations in relation to a screen angle | Norio Nakajima | 2005-05-24 |
| 6882803 | Method of and apparatus for determining developer level in an image forming apparatus and toner cartridge | Takuya Wada | 2005-04-19 |
| 6332064 | Image forming apparatus including a charging power supply and a neutralizing device | Hiroaki Sato, Kimihide Ishizaki, Koji Ida | 2001-12-18 |
| 6226027 | Electrophotography apparatus and exposing unit therefor | Norio Nakajima | 2001-05-01 |
| D332280 | Toner cartridge | Seitaro Yoshida | 1993-01-05 |
| 5121165 | Developer unit and a toner hopper for an image forming device | Seitaro Yoshida, Kunio Nakai, Shinji Ogaki, Hiroshi Kageyama, Sueaki Okamoto +2 more | 1992-06-09 |
| 5091750 | Cartridge unit | Seitaro Yoshida | 1992-02-25 |