Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6775454 | Silica-based optical waveguide circuit and fabrication method thereof | Mikitaka Itoh, Takashi Saida, Yasuyuki Inoue | 2004-08-10 |
| 6757454 | Polarization desensitized optical waveguide interferometer | Yasuyuki Inoue, Yasuaki Hashizume, Yoshinori Hibino, Akio Sugita, Hiroshi Takahashi | 2004-06-29 |