Issued Patents All Time
Showing 25 most recent of 64 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12040838 | Mitigation of anomaly loss in an optical transmission system | Inwoong Kim, Olga Vassilieva, Kyousuke Sone, Paparao Palacharla | 2024-07-16 |
| 11722294 | Communication device that performs encrypted communication and communication system | Setsuo Yoshida | 2023-08-08 |
| 11664904 | Transmission device and method of setting transmission parameter | Daijiro Tanaka, Kenji Ota, Takafumi Kusumi, Daiki Matsuyama | 2023-05-30 |
| 11558121 | Optical transmitter and control method for optical transmitter | Setsuo Yoshida, Kazuyuki Tajima, Takeshi Hoshida, Takahito Tanimura | 2023-01-17 |
| 11343009 | Optical communication component, optical transmitter, and control method | Tomoyuki Akiyama | 2022-05-24 |
| 11228426 | Communication device that performs encrypted communication and communication system | Setsuo Yoshida | 2022-01-18 |
| 11165502 | Optical transmission device and optical transmission system | Yi Ge, Yuichi Akiyama, Takeshi Hoshida | 2021-11-02 |
| 11057144 | Optical transmission apparatus, method for setting wavelength, and optical transceiver | Masatake Miyabe | 2021-07-06 |
| 11050484 | Optical transmission apparatus and estimation method | Setsuo Yoshida | 2021-06-29 |
| 10396900 | Communication apparatus and method of controlling transmission signal | GUOXIU HUANG, Setsuo Yoshida, Takeshi Hoshida, Hisao Nakashima | 2019-08-27 |
| 10389437 | Device and method for measuring optical signal-to-noise ratio | Setsuo Yoshida | 2019-08-20 |
| 10374703 | Transmission device and signal monitoring method | Takeshi Hoshida, Hisao Nakashima, Yi Ge | 2019-08-06 |
| 10374701 | Optical signal-to-noise ratio measuring device and optical signal-to-noise ratio measuring method | Setsuo Yoshida, Keisuke Harada | 2019-08-06 |
| 10256903 | Network controller and signal quality estimating method | Yasuhiko Aoki, Takeshi Hoshida, Hisao Nakashima, Hiroki Oi | 2019-04-09 |
| 10230462 | Optical transmission characteristic measurement device and method | Toru Katagiri, Satoru Okano, Masatake Miyabe, Yasuhiko Aoki | 2019-03-12 |
| 10230463 | Transmission device and method for measuring optical transmission characteristics | GUOXIU HUANG, Yasuhiko Aoki, Zhenning Tao, Setsuo Yoshida, Kyosuke Sone | 2019-03-12 |
| 10177843 | Network control apparatus and transmission quality margin calculation method | Tomohiro Yamauchi | 2019-01-08 |
| 10171163 | Signal quality measurement device and signal quality measurement method | — | 2019-01-01 |
| 10158422 | Apparatus and method for estimating optical transmission performance | Masatake Miyabe, Setsuo Yoshida, Yasuhiko Aoki, Toru Katagiri, Goji Nakagawa +2 more | 2018-12-18 |
| 10020878 | Optical signal-to-noise ratio monitor and method for measuring optical signal to-noise ratio | Yasuhiko Aoki, Hiroki Oi, Satoru Okano, Yoichi Akasaka, Jeng-Yuan Yang | 2018-07-10 |
| 9923632 | Optical transmission apparatus, optical transmission system, and method of controlling output of optical signal | Tomohiro Yamauchi | 2018-03-20 |
| 9917639 | Optical signal quality monitoring apparatus, optical signal quality monitoring method and optical repeater | Yasuhiko Aoki | 2018-03-13 |
| 9906296 | Network controller and signal quality estimating method | Yasuhiko Aoki, Takeshi Hoshida, Hisao Nakashima, Hiroki Oi | 2018-02-27 |
| 9887774 | Device and method for monitoring transmission characteristics | GUOXIU HUANG, Yasuhiko Aoki, Setsuo Yoshida | 2018-02-06 |
| 9838148 | Optical receiver and superimposed signal detecting method | Goji Nakagawa, Tomohiro Yamauchi, GUOXIU HUANG, Setsuo Yoshida, Kyosuke Sone +1 more | 2017-12-05 |