Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7440658 | Photonic crystal coupling defect waveguide | Katsumi Furuya, Kazuhiro Komori, Yoshinori Watanabe | 2008-10-21 |
| 7123797 | Directional coupler switch | Tohru Ogawa | 2006-10-17 |