Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6496289 | Optical exchanger | Tetsuya Nishi, Takuji Maeda, Isao Tsuyama, Ichiro Nakajima | 2002-12-17 |
| 6433900 | Optical wavelength multiplexing system having a redundant configuration | Tetsuya Nishi, Ichiro Nakajima, Takuji Maeda, Isao Tsuyama | 2002-08-13 |
| 6411620 | Connectionless communication system | Tadahiro Takase, Kazuo Hajikano, Takeshi Kawasaki, Toshio Shimoe, Tetsuo Tachibana +6 more | 2002-06-25 |
| 6404940 | Optical cross connect apparatus and optical network | Isao Tsuyama, Ichiro Nakajima | 2002-06-11 |