Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6813445 | Optical crossconnect apparatus and optical transmission system | Yasuyuki Fukashiro, Yukio Hayashi, 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, Yasuyuki Fukashiro, Takashi Mori | 2004-08-17 |
| 6731874 | Optical transmission apparatus and optical systems | Hideaki Tsushima, Yasushi Sawada | 2004-05-04 |