Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7934316 | Charging roller, process cartridge and image forming apparatus | Toshiaki Kagawa, Tohru Sakuwa | 2011-05-03 |
| 7869743 | Image forming apparatus, process cartridge used therein, and production method of charging roller | Toshiaki Kagawa, Tohru Sakuwa | 2011-01-11 |