Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7315676 | Optical modulator, optical waveguide device and acousto-optic tunable filter apparatus | Masaharu Doi, Tetsuo Ishizaka | 2008-01-01 |
| 7289703 | Optical modulator, optical waveguide device and acousto-optic tunable filter apparatus | Masaharu Doi, Tetsuo Ishizaka | 2007-10-30 |
| 7280713 | Optical modulator, optical waveguide device and acousto-optic tunable filter apparatus | Masaharu Doi, Tetsuo Ishizaka | 2007-10-09 |
| 7113677 | Optical modulator, optical waveguide device and acousto-optic tunable filter apparatus | Masaharu Doi, Tetsuo Ishizaka | 2006-09-26 |