Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6417945 | Optical wavelength multiplex transmission method and optical dispersion compensation method | George Ishikawa, Hiroshi Onaka, Motoyoshi Sekiya, Kazue Okazaki | 2002-07-09 |
| 6384943 | Optical wavelength multiplex transmission method and optical dispersion compensation method | George Ishikawa, Hiroshi Onaka, Motoyoshi Sekiya, Kazue Okazaki | 2002-05-07 |
| 6366376 | Optical transmitting device using wavelength division multiplexing to transmit signal lights having frequencies arranged to eliminate effects of four-wave mixing (FWM) | Hiroshi Onaka, Terumi Chikama | 2002-04-02 |
| 6351323 | Optical transmission apparatus, optical transmission system, and optical terminal station | Hiroshi Onaka, Kazue Otsuka, Yutaka Kai, Tadao Nakazawa, Terumi Chikama | 2002-02-26 |