Issued Patents 2022
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11533548 | Transmission device, transmission method, and transmission system | Tomohiro Yamauchi, Tomoyuki Kato, Shigeki Watanabe, Yu Tanaka | 2022-12-20 |
| 11438086 | Optical amplification in an optical network | Youichi Akasaka | 2022-09-06 |
| 11243349 | Wavelength conversion device and excitation light switching method | Tomohiro Yamauchi, Shingo Hara, Hiroki Satou | 2022-02-08 |
| 11228367 | Communication device and communication method | Takahito Tanimura | 2022-01-18 |