Inventor
PANCHAWAGH HRISHIKESH VIJAYKUMAR
US55 patents
Patents
50 patentsUS9945818B2Apr 17, 2018
Ultrasonic authenticating button
QUALCOMM INC81 citations95
US10515255B2Dec 24, 2019
Fingerprint sensor with bioimpedance indicator
QUALCOMM INC28 citations94
US10438040B2Oct 8, 2019
Multi-functional ultrasonic fingerprint sensor
QUALCOMM INC7 citations84
US10001552B2Jun 19, 2018
Three-port piezoelectric ultrasonic transducer
QUALCOMM INC7 citations84
US10497748B2Dec 3, 2019
Integrated piezoelectric micromechanical ultrasonic transducer pixel and array
QUALCOMM INC9 citations83
US10067229B2Sep 4, 2018
Receive-side beam forming for an ultrasonic image sensor
QUALCOMM INC7 citations83
US11436857B1Sep 6, 2022
Ultrasonic sensor system with higher-frequency and lower-frequency areas
QUALCOMM INC6 citations75
US10891458B2Jan 12, 2021
Module architecture for large area ultrasonic fingerprint sensor
QUALCOMM INC2 citations73
US10552658B2Feb 4, 2020
Biometric sensor with finger-force navigation
QUALCOMM INC4 citations73
US10139479B2Nov 27, 2018
Superpixel array of piezoelectric ultrasonic transducers for 2-D beamforming
QUALCOMM INC4 citations73
US10127425B2Nov 13, 2018
Dual-mode capacitive and ultrasonic fingerprint and touch sensor
QUALCOMM INC2 citations73
US9995821B2Jun 12, 2018
Active beam-forming technique for piezoelectric ultrasonic transducer array
QUALCOMM INC3 citations73
US11003884B2May 11, 2021
Fingerprint sensor device and methods thereof
QUALCOMM INC5 citations72
US11798307B2Oct 24, 2023
Under-display ultrasonic fingerprint sensors for foldable displays
QUALCOMM INC1 citations71
US11126814B2Sep 21, 2021
Ultrasonic fingerprint sensor with flexible substrate
QUALCOMM INC3 citations71
US10956709B1Mar 23, 2021
Anti-spoofing devices and methods involving acoustic shear waves
QUALCOMM INC2 citations71
US10929636B2Feb 23, 2021
Ultrasonic fingerprint sensor with electrically nonconductive acoustic layer
QUALCOMM INC3 citations71
US12284481B2Apr 22, 2025
Audio speaker and proximity sensor with piezoelectric polymer technology
QUALCOMM INC1 citations64
US12494080B2Dec 9, 2025
Devices configured for near-field ultrasonic imaging
QUALCOMM INC0 citations62
US11703578B2Jul 18, 2023
Ultrasonic sensor array control to facilitate screen protectors
QUALCOMM INC1 citations62
US11430249B2Aug 30, 2022
Passive acoustic fingerprint sensor
QUALCOMM INC0 citations62
US11392249B2Jul 19, 2022
Broadband ultrasonic sensor
QUALCOMM INC0 citations62
US11393239B2Jul 19, 2022
Multiple-frequency ultrasonic sensor system
QUALCOMM INC0 citations62
US11346927B2May 31, 2022
Ultrasonic sensor array control to facilitate screen protectors
QUALCOMM INC0 citations62
US11275923B2Mar 15, 2022
Ultrasonic fingerprint sensor with low-frequency vibration source
QUALCOMM INC0 citations62
US11182587B2Nov 23, 2021
Ultrasonic fingerprint sensor with low-frequency vibration source
QUALCOMM INC0 citations62
US10943084B2Mar 9, 2021
Multifunctional, multimodal, under-display sensor
QUALCOMM INC0 citations62
US12333846B2Jun 17, 2025
Apparatus with ultrasonic fingerprint sensor and one or more resonators, and related systems and methods
QUALCOMM INC0 citations61
US11915508B2Feb 27, 2024
Ultrasonic fingerprint sensor technologies and methods for bi-directional fingerprint sensing
QUALCOMM INC0 citations61
US11823483B2Nov 21, 2023
Apparatus with ultrasonic fingerprint sensor and one or more resonators, and related systems and methods
QUALCOMM INC0 citations61
US11798308B2Oct 24, 2023
Apparatus with ultrasonic fingerprint sensor and one or more resonators, and related systems and methods
QUALCOMM INC1 citations61
US11580770B1Feb 14, 2023
Ultrasonic fingerprint sensor technologies and methods for bi-directional fingerprint sensing
QUALCOMM INC1 citations61
US11182026B2Nov 23, 2021
Temperature and ultrasonic sensor fusion for biometric sensing
QUALCOMM INC0 citations61
US11062010B2Jul 13, 2021
Liveness sensing and authentication with an ultrasonic sensor system
QUALCOMM INC1 citations61
US12327426B2Jun 10, 2025
Ultrasonic fingerprint sensor for under-display applications
QUALCOMM INC0 citations60
US12217530B2Feb 4, 2025
Under-display ultrasonic fingerprint sensors for foldable displays
QUALCOMM INC0 citations60
US12169977B2Dec 17, 2024
Under-display ultrasonic fingerprint sensors for foldable displays
QUALCOMM INC0 citations60
US11910716B1Feb 20, 2024
Ultrasonic sensor system and multi-layer stiffener for foldable display
QUALCOMM INC0 citations59
US11335114B2May 17, 2022
Ultrasonic protective film detection and ultrasonic sensor calibration
QUALCOMM INC1 citations59
US11087108B2Aug 10, 2021
Fingerprint sensor system including metamaterial
QUALCOMM INC0 citations59
US11716566B2Aug 1, 2023
Segmented transducers for acoustic applications
QUALCOMM INC0 citations57
US11438703B2Sep 6, 2022
Ultrasonic sensor array
QUALCOMM INC0 citations57
US11281881B2Mar 22, 2022
Device including an ultrasonic fingerprint sensor and a coulomb force apparatus
QUALCOMM INC0 citations56
US10699095B2Jun 30, 2020
Dual-mode capacitive and ultrasonic fingerprint and touch sensor
QUALCOMM INC0 citations52
US12183113B2Dec 31, 2024
Configuration of an ultrasonic fingerprint sensor relative to a display of a device
QUALCOMM INC0 citations51
US11087107B2Aug 10, 2021
Ultrasonic sensor with bi-poled or uni-poled transmitter/receiver
QUALCOMM INC0 citations51
US12488613B2Dec 2, 2025
Ultrasonic fingerprint sensor with passive and active common mode cancellation
QUALCOMM INC0 citations48
US12449405B2Oct 21, 2025
Photoacoustic device including a light guide system configured to transmit light through an electromagnetic interference (EMI)-reducing layer
QUALCOMM INC0 citations48
US12553864B2Feb 17, 2026
Photoacoustic devices and systems including one or more light guide components
QUALCOMM INC0 citations47
US12569143B2Mar 10, 2026
Motion-based feedback for a photoacoustic sensor
QUALCOMM INC0 citations46
Showing the top 50 of 55 patents by PatentIndex Score.