Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7136605 | Image forming apparatus, method of evaluating noise, and methods of manufacturing and modifying image forming apparatus | Koichi Tsunoda | 2006-11-14 |
| 6876828 | Image formation apparatus and tone quality improving method of image formation apparatus | Koichi Tsunoda | 2005-04-05 |
| 6862417 | Image formation apparatus, sound quality evaluation method, method of manufacturing image formation apparatus, and method of remodeling image formation apparatus | Koichi Tsunoda | 2005-03-01 |
| 6697584 | Image formation apparatus and tone quality improving method of image formation apparatus | Koichi Tsunoda | 2004-02-24 |