Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7444077 | Optical transmission system, and pumping light source stopping device and method to be used in same system | — | 2008-10-28 |
| 6947644 | Optical fiber holding structure | Katsuaki Kondo, Kazuo Imamura, Minoru Yoshida, Yasuhide Sudo, Yoshiyuki Imada +3 more | 2005-09-20 |
| 6621623 | Optical fiber amplifying device stabilized for temperature and signal level | — | 2003-09-16 |
| 6297895 | Wavelength division multiplexing system, wavelength division multiplexing transmission system and optical path cross connection system | — | 2001-10-02 |
| 6144488 | Optically amplifying device with gain equalizing function | — | 2000-11-07 |
| 5966236 | Optical signal channel counter and optical amplification device using the same | — | 1999-10-12 |
| 5719924 | Electronic information transmitting apparatus with reviewable transmission history | Isamu Haneda, Hiroyuki Kitamori | 1998-02-17 |
| 5680247 | Optical amplification monitoring apparatus | — | 1997-10-21 |