Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6829592 | Data protection system, data preparation device, and data working device | Naoya Torii, Masahiko Takenaka, Souichi Okada, Yuji Kijima | 2004-12-07 |
| 6687835 | Command authorization method | Hideyuki Hirano, Seigo Kotani | 2004-02-03 |