Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6493526 | Restoration method for a charging roller, a charging roller restored by the method and a process cartridge installed in the restored charging roller | — | 2002-12-10 |
| 6374071 | Charging unit, a manufacturing method thereof, a charging device using the charging unit, and a transfer device using the same | — | 2002-04-16 |