Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6768872 | Optical transmission system, optical transmission line and optical transmitter | Keiji Tanaka, Noboru Edagawa, Masatoshi Suzuki | 2004-07-27 |
| 6754420 | Optical fiber transmission line | Keiji Tanaka, Noboru Edagawa, Masatoshi Suzuki | 2004-06-22 |
| 6744989 | Optical transmission system, its method, and optical amplification transmission line | Yuichi Yamada, Noboru Edagawa, Masatoshi Suzuki | 2004-06-01 |