Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7280264 | Magneto-optical device | Yuji Goto, Mikio Kitaoka, Hiromitsu Umezawa, Toshihiko Watanabe, Akitoshi Mesaki +3 more | 2007-10-09 |
| 7050216 | Variable optical filter | Nobuhiro Fukushima, Hidenori Nakada, Yuko Ota | 2006-05-23 |
| 7050232 | Optical circulator and optical switch | Shusuke Wada, Shohei Abe, Tomokazu Imura, Hiroaki Ono | 2006-05-23 |
| 7006273 | Faraday rotation device and optical device using same | Teruhisa Sahashi, Hidenori Nakada, Hirotaka Kawai, Isao Kojima | 2006-02-28 |
| 6876480 | Farady rotation device and optical device comprising it | Teruhisa Sahashi, Hidenori Nakada, Hirotaka Kawai, Isao Kojima | 2005-04-05 |
| 5521741 | Polarization plane switch and optical switching device using the same | Hiromitsu Umezawa, Yoichi Suzuki, Tomokazu Imura, Hiroshi Rikukawa | 1996-05-28 |
| 5105307 | Optical isolator | Yuko Nishiyama | 1992-04-14 |