Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11747294 | Water immersion detection device and water immersion detection method for detecting inundation of optical fiber | Kazutaka NOTO, Nazuki HONDA | 2023-09-05 |
| 11719599 | Optical fiber test method and optical fiber test device | Atsushi Nakamura, Tomokazu Oda, Daisuke IIDA, Yoshifumi Wakisaka | 2023-08-08 |
| 11644347 | Manhole position specification method and manhole position specification system | Tatsuya Okamoto, Daisuke IIDA, Tetsuya Manabe | 2023-05-09 |
| 11598692 | Optical pulse testing method and optical pulse testing device | Atsushi Nakamura, Keiji Okamoto | 2023-03-07 |
| 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 |