Issued Patents All Time
Showing 1–25 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11228822 | Transmission system, transmission device, and transmission method | Shingo Hara, Takeshi Sakamoto | 2022-01-18 |
| 11184102 | Apparatus and adding and dropping method | — | 2021-11-23 |
| 10904648 | Transmission system, transmission device, and transmission method | Shingo Hara, Takeshi Sakamoto | 2021-01-26 |
| 10855393 | Transmitting device and transmission system | — | 2020-12-01 |
| 10644823 | Optical transfer system, control device, optical transfer method, and transfer device | Tomoaki Takeyama, Kazuo Takatsu | 2020-05-05 |
| 10530474 | Optical transmission device and optical signal gain control method | — | 2020-01-07 |
| 10461879 | Device and method for transmitting wavelength division multiplexed optical signal | Atsushi Kiyama | 2019-10-29 |
| 9900089 | Optical transmission device and method for checking optical connection in optical transmission device | Yoshinobu Matsukawa, Atsushi Kiyama | 2018-02-20 |
| 9840529 | Hydrogen oxidation catalyst | Yoshiaki NISHIBAYASHI, Haruyuki Nakanishi | 2017-12-12 |
| 9673929 | Optical transmission apparatus and optical transmission system | Makoto Yamashita, Satoru Okano | 2017-06-06 |
| 9531496 | Optical transmission device and optical transmission method | Norifumi Shukunami, Kosuke Komaki | 2016-12-27 |
| 9031418 | Communication system, measuring apparatus, transmitting apparatus, and measurement method | Takafumi Terahara, Norifumi Shukunami | 2015-05-12 |
| 8867927 | Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them | Yuichi Akiyama, Takeshi Hoshida, Akira Miura, Yutaka Kai, Hiroki Ooi +5 more | 2014-10-21 |
| 8802592 | Resin composition for protective layer transfer sheets | Nobumichi Kamiyoshi, Takashi Mukai, Toshifusa Hirano | 2014-08-12 |
| 8705168 | Signal light monitoring apparatus, optical amplification apparatus and optical reception apparatus, and signal light monitoring method | Kentaro Nakamura, George Ishikawa | 2014-04-22 |
| 8693870 | Control apparatus, polarization multiplexing light modulator, light transmitting apparatus, and method of controlling polarization multiplexing light modulator | — | 2014-04-08 |
| 8582980 | Optical device and optical modulation method | Masato Nishihara, Tomoo Takahara, Yuichi Akiyama | 2013-11-12 |
| 8538264 | Dispersion compensating apparatus, dispersion compensating method, optical receiving apparatus, and optical receiving method | Tsukasa Takahashi, Miki Onaka, Norifumi Shukunami, Tatsuya Tsuzuki, Toshihiro Ohtani +1 more | 2013-09-17 |
| 8412047 | Polarization multiplexed light transmitter and control method thereof | Toshiki Tanaka, Yuichi Akiyama, Hideyuki Miyata | 2013-04-02 |
| 8203781 | Signal light monitoring apparatus, optical amplification apparatus and optical reception apparatus, and signal light monitoring method | Kentaro Nakamura, George Ishikawa | 2012-06-19 |
| 8086109 | Polarization multiplexed optical transmitting and receiving apparatus | Kentaro Nakamura, George Ishikawa | 2011-12-27 |
| 8073343 | Input signal detection device | Kentaro Nakamura | 2011-12-06 |
| 7817923 | Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them | Yuichi Akiyama, Takeshi Hoshida, Yutaka Kai, Hiroki Ooi, Kentaro Nakamura +3 more | 2010-10-19 |
| 7778553 | Optical transmitter | Kentaro Nakamura, Hiroki Ooi, Masato Nishihara | 2010-08-17 |
| 7704922 | Thermal transfer image-receiving sheet | Masamitsu Suzuki, Mitsuru Maeda | 2010-04-27 |