Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10673533 | Optical transmission apparatus and method | Toru Matsuyama | 2020-06-02 |
| 10212015 | Receiving device and sending device | Tomoo Takahara, Toshiki Tanaka, Masato Nishihara | 2019-02-19 |
| 10128960 | Estimation method for optical receiver and light source device | Toshiki Tanaka, Tomoo Takahara, Masato Nishihara | 2018-11-13 |
| 10050714 | Transmission apparatus and transmission method | Masato Nishihara, Toshiki Tanaka, Tomoo Takahara | 2018-08-14 |
| 9998230 | Optical transmitter, optical communication system, and optical transmission/reception control method | Masato Nishihara, Toshiki Tanaka, Tomoo Takahara, Yutaka Kai | 2018-06-12 |
| 9998233 | Optical reception apparatus | Masato Nishihara, Toshiki Tanaka, Yutaka Kai, Tomoo Takahara | 2018-06-12 |
| 9973276 | Optical receiving device and method for controlling dispersion compensation amount | Yutaka Kai, Tomoo Takahara, Toshiki Tanaka, Masato Nishihara | 2018-05-15 |
| 9923640 | Transmission apparatus and transmission system | Tomoo Takahara, Toshiki Tanaka, Masato Nishihara | 2018-03-20 |
| 9876601 | Optical transmission system, controller for wavelength tunable filter, and control method of wavelength tunable filter | Toshiki Tanaka, Tomoo Takahara, Masato Nishihara, Yutaka Kai | 2018-01-23 |
| 9853728 | Method for determining numbers of bits allocated to subcarriers and optical transmission system | Masato Nishihara, Toshiki Tanaka, Yutaka Kai, Tomoo Takahara | 2017-12-26 |
| 9602201 | Optical multiplexing device and method of generating optical OFDM signal | Shigeki Watanabe | 2017-03-21 |
| 9319170 | Optical frequency division multiplexer and polarization control method | Shigeki Watanabe | 2016-04-19 |
| 9077470 | Optical transmission system using cross phase modulation | Yutaka Kai, Shigeki Watanabe, Tomoyuki Kato | 2015-07-07 |
| 8526819 | Receiver, light spectrum shaping method, and optical communication system | — | 2013-09-03 |
| 8385741 | Optical pulse generating device and optical signal processing device | Shigeki Watanabe | 2013-02-26 |
| 7978319 | Optical switching method and optical switch | Shigeki Watanabe, Fumio Futami | 2011-07-12 |
| 7953322 | Optical switch and optical switch control method | Shigeki Watanabe, Fumio Futami | 2011-05-31 |
| 7562746 | Method, system, and display for elevator allocation using multi-dimensional coordinates | Toshifumi Yoshikawa, Satoru Toriyabe, Takamichi Hoshino, Shunichi Tanae, Atsuya Fujino +2 more | 2009-07-21 |
| 7518711 | Optical waveform measurement apparatus and optical waveform measurement method | Fumio Futami, Shigeki Watanabe, Shunsuke Ono | 2009-04-14 |
| 7397975 | Optical switch | Shigeki Watanabe, Fumio Futami, Shunsuke Ono | 2008-07-08 |