Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6684004 | Optical demultiplexer circuit and demultiplexer device and optical wavelength division multiplex circuit | — | 2004-01-27 |
| 6426817 | Optical wavelength multiplexing system and terminal | — | 2002-07-30 |
| 6215582 | Light amplifier device | Satoshi Sudo | 2001-04-10 |
| 6212311 | Light signal transmission system and light signal transmission method | — | 2001-04-03 |