Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6671444 | Optical fiber | Shinichi Arai, Kunihiko Mori, Hidehiko Takara, Satoki Kawanishi | 2003-12-30 |
| 6668121 | Optical fiber, and dispersion compensator using same, optical transmission line using same and optical transmission system using same | Ryuichi Sugizaki | 2003-12-23 |