Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7756423 | Wavelength division multiplexing optical transmission apparatus, wavelength division multiplexing optical transmission system and wavelength division multiplexing optical transmission method | Makoto Yamashita | 2010-07-13 |
| 6704290 | Transmission device and transmission method | — | 2004-03-09 |
| 6452953 | Light source | — | 2002-09-17 |
| 6137613 | Optical transmission apparatus in which light signal with selected wavelength is modulated with selected data signal | — | 2000-10-24 |
| 5917639 | Optical receiver | — | 1999-06-29 |
| 5796505 | Lightwave transmitter | — | 1998-08-18 |
| 5539570 | Monitoring state of optical elements in an optical amplifier | — | 1996-07-23 |
| 5467219 | Control device for an optical amplifier | — | 1995-11-14 |