Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6980707 | Waveguide type variable optical attenuator | Takafumi Chiba, Satoshi Takasugi, Tetsu Hasegawa | 2005-12-27 |
| 6947631 | Waveguide-type optical multiplexer/demultiplexer | Hideaki Arai, Takafumi Chiba, Masahiro Hikage | 2005-09-20 |