Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6645688 | Image-forming apparatus and image-forming method | Junichiro Hashizume, Ryuji Okamura | 2003-11-11 |
| 6635397 | Negative-charging electrophotographic photosensitive member | Ryuji Okamura, Junichiro Hashizume | 2003-10-21 |
| 6576387 | Image-forming apparatus and image-forming method | Junichiro Hashizume, Ryuji Okamura | 2003-06-10 |