Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8244129 | Monitoring apparatus and method for polarization scrambler and optical transmission apparatus | Shinichi Kaneko, Kenji Ohta | 2012-08-14 |
| 6445471 | Apparatus and method for making transmission characteristics uniform in a wavelength division multiplexing optical communications system | Hiroyuki Shimokawa | 2002-09-03 |
| 5590013 | Electric-supply-switch relay-circuit | — | 1996-12-31 |
| 5546221 | Optical amplifier apparatus | — | 1996-08-13 |