Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5689359 | Polarization independent optical isolator | Masaaki Tojo, Hironori Souda | 1997-11-18 |
| 5689360 | Polarization independent optical isolator | Masaaki Tojo, Hironori Souda | 1997-11-18 |