Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8315517 | Optical line monitoring apparatus and optical line monitoring method | Toshiaki Nakajima | 2012-11-20 |
| 8290363 | Optical line monitoring apparatus and optical line monitoring method | Toshiaki Nakajima | 2012-10-16 |
| 8270828 | Optical line monitoring apparatus and optical line monitoring method | Toshiaki Nakajima | 2012-09-18 |
| 8141778 | Identification display device | Yuji Yamada, Hiroya Ohnishi, Masaki Yamaguchi, Norihiro Momotsu | 2012-03-27 |
| 7738787 | Optical transmission line monitoring device, optical transmission line monitoring method, and computer program | Toshiaki Nakajima | 2010-06-15 |