Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7103275 | Optical transmission system | — | 2006-09-05 |
| 5956167 | Light branching and insertion apparatus and optical transmission system having light branching and insertion apparatus | Hiroyuki Iwata | 1999-09-21 |
| 5615290 | Branch device for optical multiplex system | Shinichirou Harasawa | 1997-03-25 |
| 5282074 | Optical amplification repeating system | Takashi Miyazaki | 1994-01-25 |
| 5274496 | Optical amplifying repeater with monitor and control function | Takashi Miyazaki | 1993-12-28 |
| 5097353 | Optical repeater having phase inversion circuit | Mitsuo Kitamura | 1992-03-17 |