Issued Patents 2004
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6836591 | Arrayed waveguide grating type optical multiplexer/demultiplexer and optical waveguide circuit | Kazuhisa Kashihara | 2004-12-28 |
| 6829418 | Optical waveguide circuit device | Kazuhisa Kashihara, Yoshinobu Nekado, Tunetoshi Saito | 2004-12-07 |
| 6816651 | Arrayed waveguide grating optical multiplexer/demultiplexer and method for manufacturing the same | Kazuhisa Kashihara | 2004-11-09 |
| 6768840 | Arrayed waveguide grating and method for manufacturing the same | Kazhuhisa Kashihara | 2004-07-27 |
| 6768832 | Arrayed waveguide grating optical multiplexer/demultiplexer and method for manufacturing the same | Takeshi Nakajima, Kazuhisa Kashihara | 2004-07-27 |
| 6763164 | Method for manufacturing a planar lightwave circuit, and planar waveguide circuit | Kazuhisa Kashihara, Yoshinobu Nekado | 2004-07-13 |
| 6735364 | Arrayed waveguide grating optical multiplexer/demultiplexer and method for manufacturing the same | Kazuhisa Kashihara, Kanji Tanaka | 2004-05-11 |
| 6728435 | Arrayed waveguide grating type optical multiplexer/demultiplexer and optical waveguide circuit | Kazuhisa Kashihara | 2004-04-27 |