Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6757454 | Polarization desensitized optical waveguide interferometer | Yasuyuki Inoue, Yasuaki Hashizume, Akio Sugita, Yasuhiro Hida, Hiroshi Takahashi | 2004-06-29 |
| 6735358 | Optical multiplexer and optical demultiplexer | Tsutomu Kitoh, Yasuyuki Inoue, Manabu Oguma, Kaname Jinguji | 2004-05-11 |
| 6731828 | Waveguide-type optical signal processing circuit | Tsutomu Kitou, Yasuyuki Inoue, Manabu Oguma, Takayuki Mizuno, Masaki Koutoku | 2004-05-04 |