Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6952511 | Gain equalizer and optical amplification apparatus | Masakazu Shigehara | 2005-10-04 |
| 6842568 | Method of making diffraction grating device, diffraction grating device, and apparatus for making diffraction grating device | Ken Hashimoto, Akira Inoue | 2005-01-11 |