Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6614943 | Method of image binary coding and image binary coding apparatus | Michiteru Shichiro | 2003-09-02 |
| 6563604 | Method of gradation reproduction | Seiichiro Hiratsuka | 2003-05-13 |