Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6771388 | Halftone gradation processing method and apparatus | Yukio Morikawa | 2004-08-03 |
| 6707577 | Gray scale image processing apparatus and gray scale image processing method therefor | Yukio Morikawa | 2004-03-16 |