Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6753997 | Magnetic field generator for optical devices utilizing magneto-optical effect | Seimi Sasaki, Satoshi Tachibana | 2004-06-22 |
| 6717713 | Variable optical attenuator which applies a magnetic field to a faraday element to rotate the polarization of a light signal | Hiroshi Onaka | 2004-04-06 |
| 6717730 | Tunable optical filter | Takafumi Terahara | 2004-04-06 |