Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9065243 | Optical amplifier | Takeshi Umeki, Kouji Enbutsu, Akio Tokura, Yutaka Miyamoto, Hidehiko Takara +2 more | 2015-06-23 |
| 7940451 | Wavelength converter and wavelength conversion apparatus | Takeshi Umeki, Osamu Tadanaga, Yoshiki Nishida, Tsutomu Yanagawa, Katsuaki Magari +1 more | 2011-05-10 |
| 7729585 | Light source apparatus with modulation function and its driving method | Katsuaki Magari, Tsutomu Yanagawa, Yoshiki Nishida, Hiroyasu Mawatari, Osamu Tadanaga +3 more | 2010-06-01 |
| 7573921 | Laser light source | Junji Yumoto, Osamu Tadanaga, Hiroyuki Suzuki, Kaoru Yoshino, Hiroshi Miyazawa +5 more | 2009-08-11 |
| 7391795 | Laser light source | Junji Yumoto, Osamu Tadanaga, Hiroyuki Suzuki, Kaoru Yoshino, Hiroshi Miyazawa +5 more | 2008-06-24 |
| 6806986 | Wavelength converter and wavelength converting apparatus | Osamu Tadanaga, Hiroshi Miyazawa, Yoshiki Nishida, Hiroyuki Suzuki | 2004-10-19 |
| 6763197 | Optical transmitter and optical transmitter control method using variable duty ratio setting and alternate phase inversion for optical clock pulses | Akira Hirano, Kazushige Yonenaga, Yutaka Miyamoto, Kenji Sato | 2004-07-13 |