Issued Patents 2002
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6466344 | Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexer | Seigo Takahashi, Naoya Henmi | 2002-10-15 |
| 6424440 | Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexer | Seigo Takahashi, Naoya Henmi | 2002-07-23 |
| 6404525 | Optical add-drop multiplexer | Naoya Henmi, Hitoshi Takeshita | 2002-06-11 |
| 6400498 | Optical signal repeating and amplifying device and optical level adjusting device | Naoya Henmi | 2002-06-04 |
| 6347168 | Optical switch and optical switch system | Naoya Henmi | 2002-02-12 |