Issued Patents 2022
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11522606 | Phase measurement method, signal processing device, and program | Yoshifumi Wakisaka, Daisuke IIDA, Keiji Okamoto | 2022-12-06 |
| 11486791 | Backscattering optical amplification device, optical pulse testing device, backscattering optical amplification method and optical pulse testing method | Keiji Okamoto, Atsushi Nakamura | 2022-11-01 |
| 11467060 | Optical pulse reflectometer and optical pulse reflectometry | Atsushi Nakamura, Keiji Okamoto | 2022-10-11 |
| 11463163 | Device for measuring optical frequency reflection and measurement method thereof | Tatsuya Okamoto, Daisuke IIDA | 2022-10-04 |
| 11391644 | Optical fiber testing method and optical fiber testing device | Atsushi Nakamura, Keiji Okamoto | 2022-07-19 |