Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6829418 | Optical waveguide circuit device | Kazuhisa Kashihara, Kazutaka Nara, Tunetoshi Saito | 2004-12-07 |
| 6826332 | Arrayed waveguide grating and its method for correcting center wavelength | Tsunetoshi Saito, Kazuhisa Kashihara, Kanji Tanaka, Junichi Hasegawa, Yoshimi Ono | 2004-11-30 |
| 6763164 | Method for manufacturing a planar lightwave circuit, and planar waveguide circuit | Kazuhisa Kashihara, Kazutaka Nara | 2004-07-13 |
| 6757453 | Optical waveguide module | Tsunetoshi Saito, Kazuhisa Kashihara | 2004-06-29 |