Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6421516 | Developing device and image forming apparatus having a restricted developer surface level feature | Seiji Yamaguchi, Motoki Adachi | 2002-07-16 |
| 6381419 | Image forming apparatus with developer density and developer remaining amount detection features | Koichi Hiroshima, Hironobu Isobe, Ryuichi Yoshizawa | 2002-04-30 |
| 6381431 | Charging apparatus including a magnetic brush with local anti-contamination feature | Seiji Yamaguchi | 2002-04-30 |