Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6643427 | Waveguide-arrayed optical wavelength multiplexer/demultiplexer and fabrication method of the same | — | 2003-11-04 |
| 6631223 | Optical multiplexer/demultiplexer | Hideaki Arai, Hisato Uetsuka | 2003-10-07 |
| 6556749 | Array waveguide grating and method of manufacture thereof | Hisato Uetsuka, Masahiro Okawa, Koichi Maru | 2003-04-29 |