Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8781264 | Optical pulse test apparatus and method of testing optical transmission path | Osamu Yamashita | 2014-07-15 |
| 8525094 | Photoelectric conversion circuit | — | 2013-09-03 |
| D573906 | Measurement instrument for communication | Koichi Hanazaki, Kazuhiko Zaima, Shigenori Asakura, Kei Suzuki | 2008-07-29 |