Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6212343 | Developing device, process cartridge and image forming apparatus that prevent toner leakage | Hiroshi Hosokawa, Tetsuo Yamanaka, Kenichiroh Nagai | 2001-04-03 |
| 6163666 | Process cartridge and an image forming apparatus using the same process cartridge and a method of manufacturing the same process cartridge | Hiroshi Hosokawa, Tetsuo Yamanaka, Kenichirou Nagai | 2000-12-19 |