NovAtel Inc.
120Patents
87Active
120Granted
54Portfolio score
Filing activity: Dec 12, 1989 → Nov 7, 2022 · 23 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6721657B2 | Inertial GPS navigation system | Physics | 120 | Expired |
| US5809064A | Pseudorandom noise ranging receiver which compensates for multipath distortion by dynamically adjusting the time delay spacing between early and late correlators | Physics | 104 | Expired |
| US7193559B2 | Inertial GPS navigation system with modified kalman filter | Physics | 101 | Expired |
| US6750816B1 | Integrated GPS-inertial system | Physics | 77 | Expired |
| US5692008A | Apparatus for estimating a line of sight signal propagation time using a reduced-multipath correlation function | Electricity | 66 | Expired |
| US5734674A | Pseudorandom-noise receiver having automatic switching between regular and anti-jamming modes | Physics | 50 | Expired |
| US8996311B1 | Navigation system with rapid GNSS and inertial initialization | Electricity | 41 | Active |
| US6664923B1 | Position and velocity Kalman filter for use with global navigation satelite system receivers | Physics | 38 | Expired |
| US6452560B2 | Slot array antenna with reduced edge diffraction | Electricity | 32 | Expired |
| US7668228B2 | Apparatus for and method of correlating to rising chip edges | Electricity | 32 | Active |
| US6466177B1 | Controlled radiation pattern array antenna using spiral slot array elements | Electricity | 29 | Expired |
| US5736961A | Dual Frequency global positioning system | Physics | 26 | Expired |
| US8055288B2 | System and method for distributing accurate time and frequency over a network | Emerging Cross-Sectional Technologies | 25 | Active |
| US6445354B1 | Aperture coupled slot array antenna | Electricity | 22 | Expired |
| US6128557A | Method and apparatus using GPS to determine position and attitude of a rotating vehicle | Physics | 21 | Expired |
| US7460615B2 | Spatial and time multiplexing of multi-band signals | Electricity | 21 | Active |
| US7346452B2 | Inertial GPS navigation system using injected alignment data for the inertial system | Physics | 21 | Expired |
| US6541950B2 | Multipath meter | Electricity | 20 | Expired |
| US8442097B2 | Apparatus for and method of making pulse-shape measurements | Electricity | 20 | Active |
| US6243409A | Global navigation satellite system receiver with blanked-PRN code correlation | Physics | 18 | Expired |
| US6608998B1 | Method for reducing inter-frequency bias effects in a receiver | Physics | 17 | Expired |
| US5995044A | Method and apparatus for characterizing multipath interference in circularly polarized signals | Physics | 16 | Expired |
| US7298324B2 | Apparatus for and method of improving position and time estimation of radio location devices using calibrated pulse shapes | Physics | 16 | Expired |
| USD317156S | Portable handheld telephone | General | 14 | Expired |
| US9164176B2 | GNSS receiver and antenna system including a digital communication subsystem | Physics | 14 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.