Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7639676 | SIP server | Minoru Nishida, Kousei Kataoka, Tadashi Takaba | 2009-12-29 |
| 6337905 | System for controlling automatic call distribution service | Kazuo Mizuta, Masataka Mukaihara | 2002-01-08 |
| 5854825 | Method of controlling silent monitoring of a group | Masataka Mukaihara, Takeshi Fumeno, Takaki Nakamatsu | 1998-12-29 |