Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6829418 | Optical waveguide circuit device | Kazuhisa Kashihara, Yoshinobu Nekado, Kazutaka Nara | 2004-12-07 |
| 6668116 | Arrayed waveguide grating type optical multiplexer/demultiplexer | Kazuhisa Kashihara, Kazutaka Nara, Yoshinobu Nekado | 2003-12-23 |
| 6591044 | Optical waveguide circuit module | Kazuhisa Kashihara, Kazutaka Nara, Takeshi Nakajima | 2003-07-08 |