Issued Patents 2017
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9823418 | Waveguide-type optical diffraction grating and optical wavelength filter | — | 2017-11-21 |
| 9804328 | Optical multiplexing and de-multiplexing element and arrayed-waveguide grating-type optical wavelength filter | — | 2017-10-31 |
| 9780903 | Optical wavelength demultiplexer having optical interference filters connected in cascade | — | 2017-10-03 |