Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6790142 | Advertisement distribution system and server | Kazuo Okada, Jun Fujimoto, Koji Nakagawa | 2004-09-14 |
| 6676520 | Video game system providing physical sensation | Satoshi Nishiumi, Kazuo Koshima | 2004-01-13 |