Issued Patents 2005
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6952309 | Optical amplifier and optical amplification method | Tetsufumi Tsuzaki, Masayuki Shigematsu, Hitoshi Hatayama, Eisuke Sasaoka | 2005-10-04 |
| 6907171 | Optical fiber composite and optical fiber cable and production method thereof | Shigeru Tanaka | 2005-06-14 |
| 6907172 | Optical transmission line and optical communication system | Toshiaki Okuno | 2005-06-14 |
| 6907181 | Variable optical attenuator | Makoto Katayama | 2005-06-14 |
| 6892003 | Variable dispersion compensator and optical transmission system | Makoto Katayama, Toshiaki Okuno, Tomomi Sano, Masakazu Shigehara, Hiroshi Suganuma +2 more | 2005-05-10 |
| 6859598 | Microstructured optical fiber | Takemi Hasegawa, Eisuke Sasaoka | 2005-02-22 |