Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7940451 | Wavelength converter and wavelength conversion apparatus | Masaki Asobe, Takeshi Umeki, Osamu Tadanaga, Yoshiki Nishida, Tsutomu Yanagawa +1 more | 2011-05-10 |
| 7729585 | Light source apparatus with modulation function and its driving method | Tsutomu Yanagawa, Yoshiki Nishida, Hiroyasu Mawatari, Osamu Tadanaga, Masaki Asobe +3 more | 2010-06-01 |
| 6728025 | Semiconductor optical amplifier characteristic evaluation method and apparatus | Toshio Ito, Hiromi Oohashi, Hiroyuki Kamioka, Yasuhiro Suzuki | 2004-04-27 |