Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6498617 | Pulse width modulation circuit, optical write unit, image forming apparatus and optical write method | Masaaki Ishida | 2002-12-24 |
| 6442183 | Semiconductor laser drive control circuit and image forming system using the same | — | 2002-08-27 |