Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7142362 | Optical attenuator | Hidenori Nakada, Keisuke Ikeda, Yuko Ota | 2006-11-28 |
| 7050232 | Optical circulator and optical switch | Shohei Abe, Tomokazu Imura, Hiroaki Ono, Tsugio Tokumasu | 2006-05-23 |
| 6798566 | Variable optical gain equalizer and variable branching ratio beam splitter | Shohei Abe, Hidenori Nakada, Mototsugu Goto, Ikuo Maeda, Hideo Takeshita +1 more | 2004-09-28 |
| 6667827 | Beam shutter | Hiroaki Ono, Shohei Abe, Hideo Takeshita | 2003-12-23 |