Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12259480 | Method and system for providing authentication to GNSS open service signals and interoperable secure positioning | Sergey Lyusin | 2025-03-25 |
| 12169243 | High precision independent positioning apparatus for reference station | — | 2024-12-17 |
| 12158527 | Reference station with high precision independent positioning function | — | 2024-12-03 |
| 11156724 | System and method for calibrating inter-frequency hardware bias in RTK positioning using error correction information | Toshinobu Nagamatsu, Takehiro Ohnishi | 2021-10-26 |
| 7999732 | Method and system for GPS position measuring and frequency error detecting method | Seiichiro Hirata | 2011-08-16 |
| 7528771 | Method and system for GPS position measuring and frequency error detecting method | Seiichiro Hirata | 2009-05-05 |
| 7408504 | GPS position measuring method and GPS position measuring system | Seiichiro Hirata | 2008-08-05 |