Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11927923 | Time synchronization system, management device, time synchronization method, and program | Takaaki Hisashima, Hiroki Sakuma, Kaoru Arai, Shunichi Tsuboi, Osamu Kurokawa +1 more | 2024-03-12 |
| 11881900 | Transceiver, spatial light frequency transmission system and spatial light frequency transmission method | Hiroki Sakuma, Kaoru Arai | 2024-01-23 |
| 11815552 | Clock frequency monitoring device and clock frequency monitoring method | Takaaki Hisashima, Hiroki Sakuma, Kaoru Arai, Shunichi Tsuboi, Osamu Kurokawa +1 more | 2023-11-14 |
| 11695473 | Time comparison system, time comparison device, and time comparison method | Hiroki Sakuma, Kaoru Arai | 2023-07-04 |
| 11240141 | Time path selection device and time path selection method | Kaoru Arai, Hiroki Sakuma, Takaaki Hisashima, Shunichi Tsuboi, Osamu Kurokawa +1 more | 2022-02-01 |
| 11196499 | Time synchronization device and time synchronization method | Kaoru Arai, Hiroki Sakuma, Takaaki Hisashima, Shunichi Tsuboi, Osamu Kurokawa +1 more | 2021-12-07 |
| 11196533 | Time synchronization system and time synchronization method | Hiroki Sakuma, Kaoru Arai, Takaaki Hisashima, Shunichi Tsuboi, Osamu Kurokawa +1 more | 2021-12-07 |
| 11196535 | Time synchronization system and time synchronization method | Hiroki Sakuma, Kaoru Arai, Takaaki Hisashima, Shunichi Tsuboi, Osamu Kurokawa +1 more | 2021-12-07 |
| 8956467 | Composite steel part and manufacturing method for the same | Koji Obayashi, Mamoru TAKEUCHI, Ken Shimizu, Koichi Kato | 2015-02-17 |