Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6787867 | Planar lightwave circuit device and manufacturing method therefor | Michiharu Itou, Takashi Shiotani | 2004-09-07 |
| 6751011 | Characteristic measuring method and characteristic measuring system of wavelength division multiplexing optical amplifier | — | 2004-06-15 |