Issued Patents All Time
Showing 1–25 of 30 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 |
| 12385806 | Power coupling coefficient measuring method and power coupling coefficient measuring device | Atsushi Nakamura, Tomokazu Oda, Hiroyuki OSHIDA | 2025-08-12 |
| 12388527 | Brillouin gain spectrum distribution measurement method and equipment | Tomokazu Oda, Atsushi Nakamura, Yusuke KOSHIKIYA, Nazuki HONDA | 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 |
| 12031858 | Aerial optical fiber cable inspection method, aerial optical fiber cable inspection device, and program | Tatsuya Okamoto, Hiroyuki OSHIDA | 2024-07-09 |
| 12015117 | Lithium secondary cell | Eiji NAKASHIMA, Yuuki Fujita | 2024-06-18 |
| 11994376 | Distributed vibration measuring device and method | Tatsuya Okamoto, Hiroyuki OSHIDA | 2024-05-28 |
| 11976962 | Optical-fiber path searching method, optical-fiber path searching system, signal processing device, and program | Yoshifumi Wakisaka, Kunihiro Toge, Tetsuya Manabe | 2024-05-07 |
| 11965758 | Brillouin optical sensing device and optical sensing method | Atsushi Nakamura, Chihiro KITO, Junichi Kawataka, Hiroyuki OSHIDA | 2024-04-23 |
| 11920974 | Vibration distribution measuring system, vibration waveform analysis method, vibration waveform analyzing device, and analyzing program | Tatsuya Okamoto, Kunihiro Toge, Tetsuya Manabe | 2024-03-05 |
| 11906387 | Test method and test device for mode field diameter | Atsushi Nakamura, Hiroyuki OSHIDA | 2024-02-20 |
| 11879803 | Optical fiber evaluation method and optical fiber evaluation apparatus | Tomokazu Oda, Hiroyuki OSHIDA, Atsushi Nakamura, Yuto SAGAE | 2024-01-23 |
| 11867555 | Phase measurement method and signal processing device | Yoshifumi Wakisaka, Kunihiro Toge, Hiroyuki OSHIDA | 2024-01-09 |
| 11860028 | Vibration detection method with improved signal processing | Yoshifumi Wakisaka, Keiji Okamoto, Hiroyuki OSHIDA | 2024-01-02 |
| 11788909 | Measuring device and measuring method using tape core wire | Atsushi Nakamura, Hiroyuki OSHIDA, Tatsuya Okamoto, Tomokazu Oda, Yoshifumi Wakisaka | 2023-10-17 |
| 11788928 | Light intensity distribution measurement method and light intensity distribution measurement device | Tomokazu Oda, Yoshifumi Wakisaka, Hiroyuki OSHIDA | 2023-10-17 |
| 11754465 | Optical pulse testing device and optical pulse testing method | Atsushi Nakamura, Nazuki HONDA, Hiroyuki OSHIDA, Keiji Okamoto | 2023-09-12 |
| 11750283 | Optical fiber route search method, optical fiber route search device and program | Nazuki HONDA, Tatsuya Okamoto, Yoshifumi Wakisaka, Hiroyuki OSHIDA | 2023-09-05 |
| 11719599 | Optical fiber test method and optical fiber test device | Atsushi Nakamura, Tomokazu Oda, Hiroyuki OSHIDA, Yoshifumi Wakisaka | 2023-08-08 |
| 11644347 | Manhole position specification method and manhole position specification system | Tatsuya Okamoto, Hiroyuki OSHIDA, Tetsuya Manabe | 2023-05-09 |