Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7865942 | Communication device, communication system and method for managing access authority data | Naoko Kumagai, Hiroki Kotani | 2011-01-04 |
| 7596805 | Device and method for controlling access to open and non-open network segments | Naoko Kumagai, Hiroki Kotani | 2009-09-29 |