Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7138915 | Handling support method and handling support system | Yasuko Fukuzawa, Kazuo Takaragi, Shojiro Asai | 2006-11-21 |
| 6865553 | Copy protection apparatus and method | Hiroshi Yoshiura, Michael Roe | 2005-03-08 |
| 6782190 | Copy protection apparatus and method | — | 2004-08-24 |
| 6658135 | Recording device | Naoko Iwami, Hiroshi Yoshiura, Chisato Konno, Yutaka Kurosu | 2003-12-02 |
| 6310956 | Copy protection apparatus and method | Hiroshi Yoshiura, Michael Roe | 2001-10-30 |