Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8854716 | Reflection type variable optical attenuator | Hiroaki Ono, Hirotaka Kawai, Yuko Ota, Taro Nakamura | 2014-10-07 |
| 7142362 | Optical attenuator | Shusuke Wada, Keisuke Ikeda, Yuko Ota | 2006-11-28 |
| 7050216 | Variable optical filter | Nobuhiro Fukushima, Tsugio Tokumasu, Yuko Ota | 2006-05-23 |
| 7024073 | Reflective variable light attenuator | Teruhisa Sahashi, Shohei Abe, Isao Kojima, Keisuke Ikeda | 2006-04-04 |
| 7006273 | Faraday rotation device and optical device using same | Teruhisa Sahashi, Hirotaka Kawai, Isao Kojima, Tsugio Tokumasu | 2006-02-28 |
| 6876480 | Farady rotation device and optical device comprising it | Teruhisa Sahashi, Hirotaka Kawai, Isao Kojima, Tsugio Tokumasu | 2005-04-05 |
| 6798566 | Variable optical gain equalizer and variable branching ratio beam splitter | Shohei Abe, Mototsugu Goto, Ikuo Maeda, Hideo Takeshita, Hiroaki Ono +1 more | 2004-09-28 |
| 6288827 | Faraday rotator | Hirotaka Kawai, Hiromitsu Umezawa, Nobuhiro Fukushima | 2001-09-11 |
| 6108120 | Faraday rotation angle varying apparatus | Hirotaka Kawai, Hiromitsu Umezawa, Youichi Suzuki | 2000-08-22 |