Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6744989 | Optical transmission system, its method, and optical amplification transmission line | Takehiro Tsuritani, Noboru Edagawa, Masatoshi Suzuki | 2004-06-01 |
| 6731461 | Magnetic head | Toshinori Hoshino | 2004-05-04 |