Patent assignee · US · COMPANY

CalAmp Corp

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76Patents
69Active
76Granted
55Portfolio score

Filing activity: Nov 20, 2001 → Aug 1, 2023 · 3 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
US7392015B1 Calibration methods and structures in wireless communications systems Electricity 199 Expired
US7072693B2 Wireless communications structures and methods utilizing frequency domain spatial processing Electricity 98 Expired
US7339979B1 Adaptive beamforming methods and systems that enhance performance and reduce computations Electricity 64 Expired
US8489271B2 Systems and methods for virtual ignition detection Physics 34 Active
US9217757B2 Systems and methods for 3-axis accelerometer calibration Physics 32 Active
US9406222B2 Systems and methods for location reporting of detected events in vehicle operation Electricity 30 Active
US7009573B2 Compact bidirectional repeaters for wireless communication systems Electricity 28 Expired
US9002538B2 Systems and methods for virtual ignition detection Physics 25 Active
US10392022B1 Systems and methods for driver scoring with machine learning Performing Operations; Transporting 21 Active
US8812173B2 Systems and methods for collecting information from vehicle devices via a vehicle data bus Physics 21 Active
US9171460B2 Systems and methods for collecting information from vehicle devices via a vehicle data bus Physics 20 Active
US9459277B2 Systems and methods for 3-axis accelerometer calibration with vertical sample buffers Physics 20 Active
US9644977B2 Systems and methods for determining vehicle operational status Physics 19 Active
US10395438B2 Systems and methods for crash determination with noise filtering Electricity 16 Active
US10055909B2 Systems and methods for crash determination Electricity 16 Active
US7035652B1 Wireless communication structures and methods with enhanced range and performance Electricity 15 Expired
US9648579B2 Systems and methods for driver and vehicle tracking Physics 13 Active
US10102689B2 Systems and methods for location reporting of detected events in vehicle operation Electricity 13 Active
US6947507B2 Spatial-temporal methods and systems for reception of non-line-of-sight communication signals Electricity 11 Expired
US6933891B2 High-efficiency transparent microwave antennas Electricity 11 Expired
US10107831B2 Systems and methods for efficient characterization of acceleration events Physics 10 Active
US10219117B2 Systems and methods for radio access interfaces Electricity 7 Active
US10214166B2 Systems and methods for impact detection with noise attenuation of a sensor signal Physics 6 Active
US10473750B2 Systems and methods for tracking multiple collocated assets Physics 6 Active
US10304264B2 Systems and methods for determining vehicle operational status Physics 6 Active

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