Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7058072 | Apparatus and method for establishing dial-up branch connections to internet service providers | — | 2006-06-06 |
| 7050556 | Key telephone unit and key telephone system | — | 2006-05-23 |
| 6728350 | Telephone connection system, telephone connecting method, home transmission unit and control programs therefor | — | 2004-04-27 |
| 6631180 | System and method for transferring a message responding to an answer phone through a packet network | — | 2003-10-07 |
| 6556566 | Time division switch with inserter and dropper using external memory and time division switching method | — | 2003-04-29 |
| 5937045 | Telephone call fee notifying system and telephone call fee notifying apparatus | Naoko Yaoya, Hiroshi Sato, Mariko Mori, Takemasa Takahashi, Hiromi Atsuta +2 more | 1999-08-10 |