Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12399079 | Devices and methods for measuring the amount of frequency modulation | Tatsuya Okamoto, Daisuke IIDA, Nazuki HONDA | 2025-08-26 |
| 12388527 | Brillouin gain spectrum distribution measurement method and equipment | Tomokazu Oda, Daisuke IIDA, Atsushi Nakamura, Nazuki HONDA | 2025-08-12 |
| 12313489 | Optical fiber measurement system, optical fiber measurement method, control arithmetic device, and program | Tomokazu Oda, Atsushi Nakamura, Daisuke IIDA, Nazuki HONDA | 2025-05-27 |
| 12313493 | Mode field diameter measuring method and mode field diameter measuring device | Atsushi Nakamura, Nazuki HONDA | 2025-05-27 |
| 12298159 | Technique for analyzing a spectrum of backscattered light in an optical fiber | Tatsuya Okamoto, Daisuke IIDA, Nazuki HONDA | 2025-05-13 |
| 11385127 | Optical frequency multiplexing coherent OTDR, testing method, signal processing device, and program | Hiroyuki Iida, Tetsuya Manabe, Hidenobu HIROTA, Takui UEMATSU | 2022-07-12 |
| 11199473 | Optical pulse testing device and optical pulse testing method | Hiroyuki Iida, Tetsuya Manabe, Hidenobu HIROTA, Takui UEMATSU | 2021-12-14 |
| 11112332 | Optical fiber monitoring method, and optical fiber monitoring system | Atsushi Nakamura, Kazutaka NOTO, Tetsuya Manabe | 2021-09-07 |
| 8928868 | Optical fiber line characteristic analysis apparatus and analysis method thereof | Hiroshi Takahashi, Fumihiko Ito, Xinyu Fan | 2015-01-06 |
| 8149419 | Optical reflectometry and optical reflectometer | Xinyu Fan, Fumihiko Ito | 2012-04-03 |