Issued Patents 2025
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12399079 | Devices and methods for measuring the amount of frequency modulation | Tatsuya Okamoto, Yusuke KOSHIKIYA, Nazuki HONDA | 2025-08-26 |
| 12388527 | Brillouin gain spectrum distribution measurement method and equipment | Tomokazu Oda, Atsushi Nakamura, Yusuke KOSHIKIYA, Nazuki HONDA | 2025-08-12 |
| 12385806 | Power coupling coefficient measuring method and power coupling coefficient measuring device | Atsushi Nakamura, Tomokazu Oda, Hiroyuki OSHIDA | 2025-08-12 |
| 12345555 | Phase measuring method and signal processing device | Yoshifumi Wakisaka, Keiji Okamoto, Hiroyuki OSHIDA | 2025-07-01 |
| 12320725 | Several mode fiber test method and several mode fiber test device | Atsushi Nakamura, Tomokazu Oda, Hiroyuki OSHIDA | 2025-06-03 |
| 12313449 | Optical pulse test method and optical pulse test equipment | Yoshifumi Wakisaka, Hiroyuki OSHIDA | 2025-05-27 |
| 12313489 | Optical fiber measurement system, optical fiber measurement method, control arithmetic device, and program | Tomokazu Oda, Atsushi Nakamura, Yusuke KOSHIKIYA, Nazuki HONDA | 2025-05-27 |
| 12298159 | Technique for analyzing a spectrum of backscattered light in an optical fiber | Tatsuya Okamoto, Yusuke KOSHIKIYA, Nazuki HONDA | 2025-05-13 |
| 12199210 | Optical semiconductor element | Takahide YANAI | 2025-01-14 |