Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12111224 | Optical transmission path inspecting system, and optical transmission path inspecting device | Gouichi Fukumoto, Yoshifumi Hishikawa, Toshiyuki Miyamoto, Kenichiro Otsuka | 2024-10-08 |
| 11965801 | Measurement system | Kazuya Masuda, Tomohiko Ueda, Kenichiro Otsuka, Tsuneari Ito, Yoshifumi Hishikawa +1 more | 2024-04-23 |
| 10523317 | Measurement system and measurement method | Kazuya Masuda, Tomohiko Ueda, Tsuneari Ito, Kenichiro Otsuka, Yoshifumi Hishikawa +5 more | 2019-12-31 |
| 9583911 | Optical amplifier | Fumiya UEHARA, Toshiyuki Miyamoto | 2017-02-28 |
| 7307782 | Raman amplifier and optical communication system including the same | Motoki Kakui, Takafumi Terahara, Junichi Kumasako | 2007-12-11 |
| 7110648 | Analog optical transmission system | Toshiyuki Miyamoto, Tatsuhiko Shitomi | 2006-09-19 |
| 7046428 | Raman amplifier | Kiyotaka Murashima | 2006-05-16 |
| 6958857 | Optical fiber component for Raman amplification, Raman amplifier and optical communications system | — | 2005-10-25 |
| 6952309 | Optical amplifier and optical amplification method | Masayuki Nishimura, Masayuki Shigematsu, Hitoshi Hatayama, Eisuke Sasaoka | 2005-10-04 |
| 6819477 | Raman amplifier module and optical transmission system using the same | Masayuki Nishimura, Masaaki Hirano | 2004-11-16 |
| 6819829 | Optical communication system | Masayuki Nishimura | 2004-11-16 |
| 6813065 | Raman amplifier and optical communication system | Motoki Kakui, Shinji Ishikawa, Masashi Onishi | 2004-11-02 |
| 6806999 | Raman amplification pumping module, Raman amplifier, and optical communication system | Motoki Kakui, Masayuki Nishimura | 2004-10-19 |
| 6775055 | Raman amplifier | Kiyotaka Murashima | 2004-08-10 |