Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5659640 | Integrated waveguide having an internal optical grating | — | 1997-08-19 |
| 5623571 | Polarization compensated waveguide grating router | Patrick Chou, Martin Zirngibl | 1997-04-22 |