Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6671083 | Raman amplifier and optical transmission system | Kenichi Torii, Takao Naito | 2003-12-30 |
| 6639715 | Raman amplifier and optical transmission system using the amplifier | Takao Naito | 2003-10-28 |
| 6574038 | Optical transmission path having sections which overcompensate for dispersion occurring in the sections | Takao Naito | 2003-06-03 |
| 6534161 | Crystallized glass composition, sintered crystallized glass compact, and circuit substrate using the same | Hiromichi Kawakami, Shizuharu Watanabe, Hiroshi Takagi | 2003-03-18 |