Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7152159 | Encrypted mail transmission system | Kiyoshi Toyota, Masao Akimoto | 2006-12-19 |
| 7111068 | Communication control apparatus and a communication control method | Masao Akimoto | 2006-09-19 |