Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6654385 | Message division communication method and communication system | Sumie Morita, Shigeru Sekine, Eiji Ishioka, Hisashi Koga | 2003-11-25 |
| 6466576 | ATM switching unit | Shigeru Sekine, Eiji Ishioka | 2002-10-15 |
| 6266325 | Method of controlling path audit in switches | Eiji Ishioka, Sumie Morita, Shigeru Sekine, Yoshihiro Watanabe, Toshiaki Oishi | 2001-07-24 |