Issued Patents All Time
Showing 1–25 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11817216 | Search method and information processing system | Tomoyuki Yamada | 2023-11-14 |
| 10979146 | Optical transmission device, optical transmission system, and optical transmission method | Yamato IWAMA, Mai Luan Nguyen, Toshiki Tanaka | 2021-04-13 |
| 10665880 | Cell, cell stack device, module and module-containing device | Masashi Kawakami | 2020-05-26 |
| 10419153 | Optical transmitter and optical transmitting method | Kiyotoshi Noheji | 2019-09-17 |
| 10397084 | Transmission device and setting method | Tomoo Takahara, Toshiki Tanaka | 2019-08-27 |
| 10243667 | Optical transmitter and optical transmission method | Sukeyuki Iwata, Toshiki Tanaka, Naoki Kuwata | 2019-03-26 |
| 10212015 | Receiving device and sending device | Ryou Okabe, Tomoo Takahara, Toshiki Tanaka | 2019-02-19 |
| 10128960 | Estimation method for optical receiver and light source device | Ryou Okabe, Toshiki Tanaka, Tomoo Takahara | 2018-11-13 |
| 10050714 | Transmission apparatus and transmission method | Toshiki Tanaka, Tomoo Takahara, Ryou Okabe | 2018-08-14 |
| 10027422 | Optical signal receiving device and method of receiving an optical signal | Tomoo Takahara | 2018-07-17 |
| 10027408 | Multi-carrier optical transmission system, optical transmitter, and optical receiver | Toshiki Tanaka, Yutaka Kai, Tomoo Takahara | 2018-07-17 |
| 9998233 | Optical reception apparatus | Ryou Okabe, Toshiki Tanaka, Yutaka Kai, Tomoo Takahara | 2018-06-12 |
| 9998230 | Optical transmitter, optical communication system, and optical transmission/reception control method | Toshiki Tanaka, Tomoo Takahara, Ryou Okabe, Yutaka Kai | 2018-06-12 |
| 9973276 | Optical receiving device and method for controlling dispersion compensation amount | Yutaka Kai, Tomoo Takahara, Toshiki Tanaka, Ryou Okabe | 2018-05-15 |
| 9923640 | Transmission apparatus and transmission system | Ryou Okabe, Tomoo Takahara, Toshiki Tanaka | 2018-03-20 |
| 9876601 | Optical transmission system, controller for wavelength tunable filter, and control method of wavelength tunable filter | Toshiki Tanaka, Ryou Okabe, Tomoo Takahara, Yutaka Kai | 2018-01-23 |
| 9876577 | Optical signal processing apparatus, optical signal processing method, and recording medium | Toshiki Tanaka, Tomoo Takahara | 2018-01-23 |
| 9853728 | Method for determining numbers of bits allocated to subcarriers and optical transmission system | Toshiki Tanaka, Yutaka Kai, Ryou Okabe, Tomoo Takahara | 2017-12-26 |
| 9768879 | Device and method for transmitting multicarrier signals | Toshiki Tanaka, Tomoo Takahara | 2017-09-19 |
| 9749055 | Optical transmitter and optical transmission method | Toshiki Tanaka, Tomoo Takahara | 2017-08-29 |
| 9735880 | Transmission device, transmitter, and transmission method | Toshiki Tanaka, Tomoo Takahara | 2017-08-15 |
| 9634796 | Optical transmission device and optical transmission system | Toshiki Tanaka, Tomoo Takahara | 2017-04-25 |
| 9509406 | Optical transmitter, optical receiver, optical transmission system, optical transmitting method, optical receiving method and optical transmission method | Toshiki Tanaka, Tomoo Takahara | 2016-11-29 |
| 9467229 | Multilevel intensity modulation and demodulation system and method | Yutaka Kai, Toshiki Tanaka, Tomoo Takahara | 2016-10-11 |
| 9425897 | Transmission apparatus, transmission system, and transmission method | Toshiki Tanaka, Tomoo Takahara, Yutaka Kai | 2016-08-23 |