Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6654385 | Message division communication method and communication system | Hiromi Odaka, Sumie Morita, Shigeru Sekine, Eiji Ishioka | 2003-11-25 |
| 6556675 | Subscriber line control device | — | 2003-04-29 |
| 6526023 | Traffic control apparatus | Takashi Sugino, Toshiaki Ohishi | 2003-02-25 |