Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6888793 | Internet protocol network alternate routing system | — | 2005-05-03 |
| 6816587 | Virtual private line connection system and method | Takashi Okumura | 2004-11-09 |
| 6498846 | Method and system for distributing data to nodes in PBX network | — | 2002-12-24 |
| 6049601 | Method of and apparatus for establishing call forwarding service for subscriber's telephone terminal in switching system with verification function | — | 2000-04-11 |