Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6822694 | Signal processing apparatus | Hiroyuki Kojima, Akira Shirahama, Hiroshi Sugaya | 2004-11-23 |
| 6674478 | Image processing apparatus, method and providing medium | Akira Shirahama, Takeshi Ohno | 2004-01-06 |