Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8180261 | Image forming apparatus including a developer replenishing device which uses an air feeding device for a two-ingredient type developer | Satoshi Muramatsu, Nobuo Iwata, Nobutaka Takeuchi, Junichi Matsumoto, Takayuki Koike | 2012-05-15 |
| 7962071 | Developing device and image forming apparatus using same | Kiyonori Tsuda, Koichi Kato, Yuki Oshikawa, Yasufumi Takahashi, Koichi Sakata +5 more | 2011-06-14 |
| 7809322 | Image forming apparatus and process cartridge therefore having a cleaner section which stores unused developer | Nobutaka Takeuchi, Nobuo Iwata, Satoshi Muramatsu, Junichi Matsumoto, Takayuki Koike | 2010-10-05 |
| 7512364 | Image forming apparatus including a developer replenishing device for a two-ingredient type developer | Satoshi Muramatsu, Nobuo Iwata, Nobutaka Takeuchi, Junichi Matsumoto, Takayuki Koike | 2009-03-31 |
| 7444107 | Image forming method and apparatus having a unit for conveying toner and carrier particles from a cleaning unit to a developing unit | Nobutaka Takeuchi, Nobuo Iwata, Satoshi Muramatsu, Junichi Matsumoto, Takayuki Koike | 2008-10-28 |
| 7346286 | Method and apparatus for image forming effectively detecting deterioration of developer | Junichi Matsumoto, Nobuo Iwata, Satoshi Muramatsu, Nobutaka Takeuchi, Takayuki Koike | 2008-03-18 |
| 7127198 | Image forming apparatus including a developer replenishing device for a two-ingredient type developer | Satoshi Muramatsu, Nobuo Iwata, Nobutaka Takeuchi, Junichi Matsumoto, Takayuki Koike | 2006-10-24 |