Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6829053 | Airgap type etalon and apparatus utilizing the same | Nobuaki Mitamura | 2004-12-07 |
| 6826318 | Variable polarization plane rotator and optical device using same | Nobuaki Mitamura, Kazuaki Akimoto | 2004-11-30 |