Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7557823 | Image forming apparatus | Hiroshi Yoshizawa | 2009-07-07 |
| 7440001 | Optical writing device and image forming apparatus | Takeshi Yamakawa | 2008-10-21 |
| 6985312 | Lens mounting device | Takeshi Yamakawa | 2006-01-10 |