Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6804430 | Optical multiplexer/demultiplexer | Isao Ooyama, Takuya Komatsu, Kazuhisa Kashihara | 2004-10-12 |
| 6728447 | Optical multiplexer/demultiplexer | Kazuhisa Kashihara | 2004-04-27 |