Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12204291 | Time transmission correction device, time transmission system, and delay measurement method | Kaoru Arai, Hiroki Sakuma, Masahiro Nakagawa | 2025-01-21 |
| 11927923 | Time synchronization system, management device, time synchronization method, and program | Takaaki Hisashima, Hiroki Sakuma, Kaoru Arai, Ryuta Sugiyama, Osamu Kurokawa +1 more | 2024-03-12 |
| 11855760 | Transmission device, time transmission system, and delay compensation method | Masahiro Nakagawa, Kaoru Arai, Hiroki Sakuma | 2023-12-26 |
| 11815552 | Clock frequency monitoring device and clock frequency monitoring method | Takaaki Hisashima, Hiroki Sakuma, Kaoru Arai, Ryuta Sugiyama, Osamu Kurokawa +1 more | 2023-11-14 |
| 11791922 | Transmission device, time transmission system, and delay compensation method | Masahiro Nakagawa, Kaoru Arai, Hiroki Sakuma | 2023-10-17 |
| 11750358 | Time transmission device and transmission method | Masahiro Nakagawa, Kaoru Arai, Hiroki Sakuma | 2023-09-05 |
| 11722288 | Time synchronization path selection device and time synchronization path selection method | Kaoru Arai, Hiroki Sakuma, Masahiro Nakagawa | 2023-08-08 |
| 11638228 | Time comparison device and time quality monitoring method | Kaoru Arai, Hiroki Sakuma, Masahiro Nakagawa | 2023-04-25 |
| 11438857 | Transmission device, time transmission system, and delay measurement method | Kaoru Arai, Hiroki Sakuma, Masahiro Nakagawa | 2022-09-06 |
| 11240141 | Time path selection device and time path selection method | Ryuta Sugiyama, Kaoru Arai, Hiroki Sakuma, Takaaki Hisashima, Osamu Kurokawa +1 more | 2022-02-01 |
| 11196499 | Time synchronization device and time synchronization method | Kaoru Arai, Hiroki Sakuma, Takaaki Hisashima, Ryuta Sugiyama, Osamu Kurokawa +1 more | 2021-12-07 |
| 11196533 | Time synchronization system and time synchronization method | Hiroki Sakuma, Kaoru Arai, Ryuta Sugiyama, Takaaki Hisashima, Osamu Kurokawa +1 more | 2021-12-07 |
| 11196535 | Time synchronization system and time synchronization method | Hiroki Sakuma, Kaoru Arai, Takaaki Hisashima, Ryuta Sugiyama, Osamu Kurokawa +1 more | 2021-12-07 |