Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6813445 | Optical crossconnect apparatus and optical transmission system | Yukio Hayashi, Shigeki Kitajima, Tatsuo Kanetake, Masahiro Takatori, Shoichi Hanatani +1 more | 2004-11-02 |
| 6778725 | Optical switching apparatus, optical transmission system and method of setting up for optical signal route | Sunao Kakizaki, Hideaki Tsushima, Shigeki Kitajima, Takashi Mori | 2004-08-17 |
| 6714697 | Optical switching apparatus and optical switching method | Tooru Hirai | 2004-03-30 |