Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6970614 | Optical switching equipment, optical transport network, and methods of using them | Hideaki Tsushima | 2005-11-29 |
| 6933852 | Optical switching apparatus and optical communication network system | Shigeki Kitajima, Sunao Kakizaki, Hideaki Tsushima | 2005-08-23 |
| 6839480 | Optical switching apparatus, optical transmission system and method of setting up for optical signal route | Sunao Kakizaki, Hideaki Tsushima, Shigeki Kitajima, Takashi Mori | 2005-01-04 |