Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6643463 | Optical wavelength division multiplexing transmission network system using transmitting/receiving apparatuses having 2-input and 2-output optical path switching elements | Masao Kawachi, Kennosuke Fukami, Yuji Akatsu, Kazutosi Kato, Mitsuru Harada +2 more | 2003-11-04 |