Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6731621 | Mobil communication system for providing IP packet communications and method for routing IP packets | Mika Mizutani, Susumu Matsui, Haruo Shibata, Koji Hirayama, Keisuke Shirai | 2004-05-04 |
| 5749053 | Mobile communication network and control method thereof | Tsutomu Kusaki, Shiro Tanabe, Ken Nanjo, Takeshi Maki | 1998-05-05 |