Barton G. Ferrell
13Patents
7h-index
17Co-inventors
59Inventor score
Filing activity: Feb 7, 1995 → Jul 9, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7372400B2 | Methods and apparatus for a navigation system with reduced susceptibility to interference and jamming | Electricity | 59 | Expired |
| US7042392B2 | GPS access system and method | Physics | 49 | Expired |
| US7554481B2 | Localized jamming of navigation signals | Electricity | 44 | Active |
| US7489926B2 | LEO-based positioning system for indoor and stand-alone navigation | Physics | 37 | Active |
| US7583225B2 | Low earth orbit satellite data uplink | Electricity | 35 | Active |
| US7579987B2 | Low earth orbit satellite providing navigation signals | Physics | 35 | Active |
| US5534873A | Near field RCS test facility and testing method | Physics | 21 | Expired |
| US8296051B2 | Generalized high performance navigation system | Physics | 6 | Active |
| US8035558B2 | Precise absolute time transfer from a satellite system | Physics | 6 | Active |
| US7859455B2 | Local clock frequency calibration using low earth orbit (LEO) satellites | Physics | 5 | Active |
| US7952518B2 | Internet hotspots localization using satellite systems | Physics | 4 | Active |
| US8160576B2 | LEO-based positioning system for indoor and stand-alone navigation | Physics | 3 | Active |
| US8179312B2 | Precise absolute time transfer from a satellite system | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.