Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6400719 | Telephone communication method capable of relating a telephone terminal and a speech channel IP address at the time of call connection | Yasubumi Chimura, Masanori Goto, Toshikatsu Nakajima | 2002-06-04 |