Issued Patents 2002
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6466344 | Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexer | Hirofumi Shimomura, Seigo Takahashi | 2002-10-15 |
| 6445473 | Optical switching apparatus using wavelength division multiplexing technology | Yoshihiko Suemura | 2002-09-03 |
| 6441935 | Optical packet exchange system and optical switch | Soichiro Araki, Yoshihiko Suemura, Akio Tajima, Seigo Takahashi, Yoshiharu Maeno | 2002-08-27 |
| 6429955 | Optical network | Yoshihiko Suemura, Soichiro Araki, Akio Tajima, Seigo Takahashi, Yoshiharu Maeno | 2002-08-06 |
| 6424440 | Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexer | Hirofumi Shimomura, Seigo Takahashi | 2002-07-23 |
| 6407834 | Optical wave network system and method of monitoring a network trouble | Hitoshi Takeshita | 2002-06-18 |
| 6404525 | Optical add-drop multiplexer | Hirofumi Shimomura, Hitoshi Takeshita | 2002-06-11 |
| 6400498 | Optical signal repeating and amplifying device and optical level adjusting device | Hirofumi Shimomura | 2002-06-04 |
| 6373911 | Bit synchronization circuit | Akio Tajima, Yoshihiko Suemura, Soichiro Araki, Seigo Takahashi, Yoshiharu Maeno | 2002-04-16 |
| RE37621 | Optical communication transmission system | Shogo Nakaya, Tomoki Saito | 2002-04-02 |
| 6347168 | Optical switch and optical switch system | Hirofumi Shimomura | 2002-02-12 |