Issued Patents All Time
Showing 51–60 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6895141 | Control method and device for optical filter, and optical node device | Hideyuki Miyata, Isao Tsuyama | 2005-05-17 |
| 6785306 | Wavelength-tunable stabilizer laser | Hideyuki Miyata | 2004-08-31 |
| 6782017 | Wavelength locker and wavelength discriminating apparatus | Hideyuki Miyata, Hiroshi Onaka | 2004-08-24 |
| 6583900 | Optical transmission apparatus, optical transmission system, and optical terminal station | Hiroshi Onaka, Hideyuki Miyata, Kazue Otsuka, Tadao Nakazawa, Terumi Chikama | 2003-06-24 |
| 6545784 | Optical cross connect unit, optical add-drop multiplexer, light source unit, and adding unit | Kazue Okazaki, Hiroshi Onaka, Hideyuki Miyata, Terumi Chikama | 2003-04-08 |
| 6462844 | WAVELENGTH-DIVISION MULTIPLEXING TRANSMISSION SYSTEM, A METHOD FOR DESIGNING A LOSS DIFFERENCE COMPENSATOR FOR OPTICAL DEVICES USED IN THE WAVELENGTH-DIVISION MULTIPLEXING TRANSMISSION SYSTEM, AND A METHOD FOR CONFIGURING THE WAVELENGTH-DIVISION MULTIPLEXING TRANSMISSION SYSTEM | Hiroshi Onaka | 2002-10-08 |
| 6351323 | Optical transmission apparatus, optical transmission system, and optical terminal station | Hiroshi Onaka, Hideyuki Miyata, Kazue Otsuka, Tadao Nakazawa, Terumi Chikama | 2002-02-26 |
| 6285479 | Optical cross connect unit, optical add-drop multiplexer, light source unit, and adding unit | Kazue Okazaki, Hiroshi Onaka, Hideyuki Miyata, Terumi Chikama | 2001-09-04 |
| 6278536 | Optical transmission device for bi-directional optical communication | Terumi Chikama | 2001-08-21 |
| 6154588 | Dispersion compensation apparatus | — | 2000-11-28 |