Patent assignee · US · COMPANY

NORTHROP GRUMMAN GUIDANCE AND ELECTRONICS COMPANY, INC.

74Patents
69Active
74Granted
55Portfolio score

Filing activity: Mar 16, 2001 → Mar 30, 2017 · 47 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
US7552664B2 Harmonic drive gear assembly with asymmetrical wave generator and associated flexspline Emerging Cross-Sectional Technologies 85 Expired
US7565839B2 Bias and quadrature reduction in class II coriolis vibratory gyros Physics 35 Active
US7980115B2 Self-calibrating laser semiconductor accelerometer Physics 21 Active
US7912664B2 Self calibrating gyroscope system Physics 20 Active
US7981057B2 Joint motion sensing to make a determination of a positional change of an individual Physics 19 Expired
US8011246B2 Apparatus and method for self-calibration of coriolis vibratory gyroscope Physics 17 Active
US8136382B2 Self-calibration of scale factor for dual resonator class II Coriolis vibratory gyros Physics 16 Active
US7874209B2 Capacitive bulk acoustic wave disk gyroscopes with self-calibration Physics 16 Active
US7702460B2 Estimate of relative position between navigation units Physics 14 Active
US8138760B2 Temperature system with magnetic field suppression Physics 12 Active
US8237105B1 Magneto-optical trap for cold atom beam source Electricity 12 Active
US7640786B2 Self-calibrating accelerometer Physics 9 Active
US7886598B2 Vibratory gyro bias error cancellation using mode reversal Physics 8 Active
US8159220B2 Nuclear magnetic resonance gyroscope mechanization Physics 8 Active
US7893780B2 Reversible alkali beam cell Physics 7 Active
US9229073B2 Systems and method to substantially mitigate AC stark shift effects in a sensor system Physics 7 Active
US8102302B2 Mode 5 detection process using phase and amplitude correlation Physics 7 Active
US8109145B2 Micro hemispheric resonator gyro Emerging Cross-Sectional Technologies 7 Active
US7739896B2 Self-calibration of scale factor for dual resonator class II coriolis vibratory gyros Physics 6 Active
US8311739B2 Inertial navigation system error correction Physics 6 Active
US7965148B2 Atomic frequency clock systems and methods Physics 6 Active
US7607350B2 Circuit board mounting for temperature stress reduction Electricity 6 Active
US8600691B2 Gyroscope system magnetic field error compensation Physics 6 Active
US7728587B2 Self-calibrating nuclear magnetic resonance gyro Physics 6 Active
US8346466B2 Systems and methods for determining heading Physics 5 Active

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.