Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6810421 | Communication network system and method for controlling services in a communication network system | Takeshi Ishizaki, Masatoshi Takihiro, Osamu Takada, Kenichi Yoshida | 2004-10-26 |
| 6700874 | Network system having route verification function and the component apparatuses and method thereof | Masatoshi Takihiro, Takeshi Ishizaki, Osamu Takada | 2004-03-02 |