Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7363021 | Communication management system, mobile terminal device, and communication management program | — | 2008-04-22 |
| 5751805 | Data-protecting system | Shinichirou Watanabe | 1998-05-12 |