Issued Patents All Time
Showing 25 most recent of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12368508 | Optical access system, optical transmitter, optical receiver, optical transmission method and demodulation method | Masamichi Fujiwara | 2025-07-22 |
| 12283993 | Branch ratio calculation method, branch ratio calculation device and computer program | Masamichi Fujiwara | 2025-04-22 |
| 12273147 | Coherent optical reception device and coherent optical reception method | Masamichi Fujiwara, Takuya KANAI | 2025-04-08 |
| 12206461 | Optical feeding system | Masamichi Fujiwara, Takuya KANAI | 2025-01-21 |
| 12199664 | Light leakage confirmation method, light leakage confirmation apparatus and program | Masamichi Fujiwara, Takuya KANAI | 2025-01-14 |
| 12160274 | Optical receiving device and optical receiving method | — | 2024-12-03 |
| 12143157 | Branch ratio setting system, method for producing optical communication system and optical branch device | Masamichi Fujiwara, Takuya KANAI | 2024-11-12 |
| 12119869 | Optical amplification estimation method, optical amplification estimation apparatus and computer program | Masamichi Fujiwara, Takuya KANAI | 2024-10-15 |
| 12047710 | Remote monitoring device, remote monitoring system, and remote monitoring method | — | 2024-07-23 |
| 12021567 | Optical receiving device and clock synchronization method | — | 2024-06-25 |
| 11933629 | Map data updating device and storage medium storing computer program for map data updating | — | 2024-03-19 |
| 11870497 | Optical receiving apparatus, optical transmission system, optical transmission method and computer program | Takuya KANAI, Masamichi Fujiwara, Junichi KANI | 2024-01-09 |
| 11863211 | Optical communication system and optical communication method | Masamichi Fujiwara, Kazutaka Hara, Takuya KANAI, Yasutaka Kimura, Atsuko KAWAKITA | 2024-01-02 |
| 11828602 | Location estimating device, storage medium storing computer program for location estimation and location estimating method | — | 2023-11-28 |
| 11818633 | Map update system, data transmission device, and data transmission method | — | 2023-11-14 |
| 11680822 | Apparatus and methods for managing maps | — | 2023-06-20 |
| 11680808 | Map selection device, storage medium storing computer program for map selection and map selection method | — | 2023-06-20 |
| 11652554 | Optical receiving apparatus, optical transmission system, optical transmission method and computer program | Takuya KANAI, Masamichi Fujiwara, Junichi KANI | 2023-05-16 |
| 11621778 | Optical communication system and optical communication method | Masamichi Fujiwara, Takuya KANAI | 2023-04-04 |
| 11592313 | Apparatus and method for collecting map-generating data | — | 2023-02-28 |
| 11516442 | Data transmission device and data transmission method | — | 2022-11-29 |
| 11486727 | Map generation device, map generation method, and map generation computer program | — | 2022-11-01 |
| 11467576 | Autonomous driving system | Nobuhide Kamata, Kazuhiko Kamikado, Kiyosumi Kidono, Kunihiro Goto, Takashi Naito | 2022-10-11 |
| 11451305 | Optical receiving apparatus, optical transmitting apparatus, and frequency offset estimation method | Masamichi Fujiwara, Takuya KANAI | 2022-09-20 |
| 11104476 | Package having a sheet-covered cutout | Qi Zhang, Yuichi Kosaka, Masahiro Uchida, Susumu Yamasaki, Shigekazu Ishiguro +1 more | 2021-08-31 |