Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6771415 | Optical fiber for optical amplifier and fiber optic amplifier | Shinji Ishikawa, Motoki Kakui | 2004-08-03 |
| 6724527 | Optical amplifier and optical transmission system using same | Motoki Kakui | 2004-04-20 |
| 6687439 | Light-amplifying optical fiber and method of making the same | Shinji Ishikawa, Motoki Kakui, Toshimi Suzuki | 2004-02-03 |