Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7631059 | VPN service management system having a VPN service manager for a provider network and a VPN service agent for a customer network and enabling rapid change of VPN service conditions | Ta-Wei Chang, Toshimasa Arai, Hiroaki Abe | 2009-12-08 |
| 6671288 | Control apparatus having window control function | Kenichiro Sakai | 2003-12-30 |
| 6643525 | Mobile communication system | Kenichiro Sakai | 2003-11-04 |