Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6778725 | Optical switching apparatus, optical transmission system and method of setting up for optical signal route | Sunao Kakizaki, Shigeki Kitajima, Yasuyuki Fukashiro, Takashi Mori | 2004-08-17 |
| 6731874 | Optical transmission apparatus and optical systems | Shigeki Kitajima, Yasushi Sawada | 2004-05-04 |