Javad Ashjaee
49Patents
18h-index
30Co-inventors
81Inventor score
Filing activity: Jul 14, 1988 → Sep 28, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4928106A | Global positioning system receiver with improved radio frequency and digital processing | Physics | 249 | Expired |
| US6219376A | Apparatuses and methods of suppressing a narrow-band interference with a compensator and adjustment loops | Physics | 100 | Expired |
| US5769370A | Knock-down satellite positioning system antenna supporting tripod | Physics | 100 | Expired |
| US6313789A | Joint tracking of the carrier phases of the signals received from different satellites | Electricity | 70 | Expired |
| US5749549A | Satellite positioning system antenna supporting tripod | Physics | 69 | Expired |
| US6463091B1 | Spread spectrum receiver using a pseudo-random noise code for ranging applications in a way that reduces errors when a multipath signal is present | Electricity | 66 | Expired |
| USD756842S1 | Unmanned aerial drone | General | 51 | Active |
| US6268824A | Methods and apparatuses of positioning a mobile user in a system of satellite differential navigation | Physics | 50 | Expired |
| US6493378B1 | Methods and apparatuses for reducing multipath errors in the demodulation of pseudo-random coded signals | Electricity | 50 | Expired |
| US5953367A | Spread spectrum receiver using a pseudo-random noise code for ranging applications in a way that reduces errors when a multipath signal is present | Electricity | 32 | Expired |
| US8717233B2 | Satellite signal multipath mitigation in GNSS devices | Physics | 27 | Active |
| US6633256B2 | Methods and systems for improvement of measurement efficiency in surveying | Physics | 25 | Expired |
| US8125376B1 | Handheld global positioning system device | Physics | 23 | Active |
| US8022868B2 | Inter-channel bias calibration for navigation satellite systems | Physics | 21 | Active |
| US6731701B2 | Navigation data prediction for GPS and GLONASS weak signal tracking | Electricity | 21 | Expired |
| US6337657B1 | Methods and apparatuses for reducing errors in the measurement of the coordinates and time offset in satellite positioning system receivers | Physics | 21 | Expired |
| US8120527B2 | Satellite differential positioning receiver using multiple base-rover antennas | Physics | 20 | Active |
| US6278407A | Dual-frequency choke-ring ground planes | Electricity | 19 | Expired |
| US8872700B2 | GNSS surveying receiver with multiple RTK engines | Physics | 17 | Active |
| US8717232B2 | Handheld global positioning system device | Physics | 15 | Active |
| US8975967B2 | Antenna LNA filter for GNSS devices | Electricity | 14 | Active |
| US8094087B2 | Portable navigational antenna system | Physics | 14 | Active |
| US9103912B2 | Inter-channel bias calibration for navigation satellite systems | Physics | 14 | Active |
| US6456233B1 | Methods and apparatuses of positioning a mobile user in a system of satellite differential navigation | Physics | 13 | Expired |
| US9250328B2 | Graphics-aided remote position measurement with handheld geodesic device | Physics | 12 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.