Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7885554 | Developing device, image forming apparatus, image forming system, cartridge, developing unit and photoconductor unit | Katsumi Okamoto, Yuichi Segawa, Satoru Miyamoto, Yoichi Yamada, Yasushige Hori +1 more | 2011-02-08 |
| 7156479 | Image forming apparatus to which attachment unit can be connected | — | 2007-01-02 |
| 6892039 | Connector having a built-in memory IC mounted on a development cartridge | Katsumi Okamoto, Takeshi Aoki | 2005-05-10 |