Issued Patents 2002
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6493129 | Tunable optical filter | Takafumi Terahara | 2002-12-10 |
| 6407836 | Optical attenuator and system, optical amplifier, and terminal device each having the optical attenuator | — | 2002-06-18 |
| 6392784 | Faraday rotator | Seiichi Ikeda, Hirohiko Sonada | 2002-05-21 |
| 6384957 | Variable optical attenuator utilizing Faraday effect | Seiichi Ikeda, Hirohiko Sonoda | 2002-05-07 |
| 6339492 | Tunable optical filter | Takafumi Terahara | 2002-01-15 |
| 6334924 | Method of manufacturing optical filter | — | 2002-01-01 |