Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6735358 | Optical multiplexer and optical demultiplexer | Tsutomu Kitoh, Yasuyuki Inoue, Yoshinori Hibino, Kaname Jinguji | 2004-05-11 |
| 6731828 | Waveguide-type optical signal processing circuit | Tsutomu Kitou, Yasuyuki Inoue, Takayuki Mizuno, Yoshinori Hibino, Masaki Koutoku | 2004-05-04 |
| 6724957 | Optical filter | Takashi Saida, Takayuki Mizuno, Akira Himeno, Katsunari Okamoto, Koichi Takiguchi | 2004-04-20 |