Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7420959 | Telephone apparatus used for computer network telephone system | Hidekazu Watanabe, Masahiro Asai | 2008-09-02 |
| 6188677 | Telephone apparatus used for computer network telephone system | Hidekazu Watanabe, Masahiro Asai, Kazunori Ozawa, Nobuhiro Tone | 2001-02-13 |
| 6108329 | Telephone apparatus used for computer network telephone system | Hidekazu Watanabe, Masahiro Asai, Kazunori Ozawa, Nobuhiro Tone | 2000-08-22 |
| 6014687 | System for audio communication between two terminals connected to the internet network | Hidekazu Watanabe, Masahiro Asai, Kazunori Ozawa | 2000-01-11 |
| 5991291 | Server of a computer network telephone system | Masahiro Asai, Hidekazu Watanabe | 1999-11-23 |