Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6975811 | Optical one-to-one protection switching apparatus | Hideaki Tsushima, Takashi Mori, Masahiro Takatori, Yukio Hayashi, Shinichi Kuwano | 2005-12-13 |
| 6933852 | Optical switching apparatus and optical communication network system | Shigeki Kitajima, Hideaki Tsushima, Yasuyuki Fukashiro | 2005-08-23 |
| 6839480 | Optical switching apparatus, optical transmission system and method of setting up for optical signal route | Hideaki Tsushima, Shigeki Kitajima, Yasuyuki Fukashiro, Takashi Mori | 2005-01-04 |