Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7652790 | Image forming apparatus, gradation correction method and control method of image forming apparatus | — | 2010-01-26 |
| 7508552 | Document reader, image forming apparatus, and image processing method | — | 2009-03-24 |
| 7167658 | Image forming apparatus which corrects an output of a sensor for detecting image gradation characteristics | Makoto Ooki | 2007-01-23 |