Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7907843 | Technique of identifying a defective subscriber device in a point-to-multipoint network without stopping normal subscriber devices | Katsuichi Yamaji, Toshihiro Noguchi | 2011-03-15 |
| 7761008 | Optical transmission method and device | Kazuhiro Uchida | 2010-07-20 |