Inventor
VAN OSTRAND DANIEL KEITH
US269 patents
Patents
50 patentsUS10671034B1Jun 2, 2020
Motor drive input adaptation with in-line drive-sense circuit
SIGMASENSE LLC19 citations98
US11543900B2Jan 3, 2023
Communication protocol for touch sensor and e-pen systems
SIGMASENSE LLC8 citations94
US11494006B2Nov 8, 2022
Erasure operable e-pen within touch sensor and e-pen systems
SIGMASENSE LLC10 citations94
US11474685B2Oct 18, 2022
Redundant touch system operation
SIGMASENSE LLC11 citations94
US11237653B2Feb 1, 2022
Frequency diverse e-pen for touch sensor and e-pen systems
SIGMASENSE LLC11 citations94
US10852857B2Dec 1, 2020
Frequency diverse e-pen for touch sensor and e-pen systems
SIGMASENSE LLC17 citations94
US10845985B2Nov 24, 2020
Identification in touch systems
SIGMASENSE LLC18 citations94
US10756578B1Aug 25, 2020
Wireless power transfer with in-line sensing and control
SIGMASENSE LLC15 citations94
US10684977B1Jun 16, 2020
Low voltage drive circuit with bus isolation and methods for use therewith
SIGMASENSE LLC25 citations94
US10554215B1Feb 4, 2020
Analog to digital conversion circuit with very narrow bandpass digital filtering
SIGMASENSE LLC19 citations94
US11762548B2Sep 19, 2023
User-interactive glass feature
SIGMASENSE LLC4 citations86
US11726652B2Aug 15, 2023
Identification in touch systems
SIGMASENSE LLC6 citations86
US11714541B2Aug 1, 2023
Location and/or angle of approach user identification capable touch sensor device
SIGMASENSE LLC4 citations86
US11669177B2Jun 6, 2023
Frequency diverse e-pen for touch sensor and e-pen systems
SIGMASENSE LLC6 citations86
US11592915B2Feb 28, 2023
E-pen association within touch sensor and e-pen systems
SIGMASENSE LLC4 citations86
US11592874B1Feb 28, 2023
Touch sensing in a flexible/foldable touch screen display
SIGMASENSE LLC6 citations86
US11567465B2Jan 31, 2023
Motor control feedback and adaptation
SIGMASENSE LLC4 citations86
US11556298B1Jan 17, 2023
Generation and communication of user notation data via an interactive display device
SIGMASENSE LLC10 citations86
US11435864B1Sep 6, 2022
Differential touch screen display
SIGMASENSE LLC9 citations86
US11402990B2Aug 2, 2022
User-interactive steering wheel
SIGMASENSE LLC6 citations86
US11340995B2May 24, 2022
Integrated circuit with programmable input/output module
SIGMASENSE LLC6 citations86
US11320860B2May 3, 2022
Display generated data transmission from user device to touchscreen via user
SIGMASENSE LLC6 citations86
US11221704B2Jan 11, 2022
Screen-to-screen communication via touch sense elements
SIGMASENSE LLC6 citations86
US11221709B2Jan 11, 2022
Electronic writing apparatus with ring-back and other functionalities
SIGMASENSE LLC6 citations86
US11079888B1Aug 3, 2021
Sensitivity region of interest processing (ROIP) for input/output (I/O) operative touch sensor device (TSD)
SIGMASENSE LLC9 citations86
US11494032B2Nov 8, 2022
Enhanced mutual capacitance touch screen display with compressive touch detection and methods for use therewith
SIGMASENSE LLC10 citations85
US11269455B1Mar 8, 2022
Enhanced mutual capacitance touch screen display with noise compensation and methods for use therewith
SIGMASENSE LLC7 citations85
US11740781B2Aug 29, 2023
Single user or few users identification and blocking operable touch sensor device
SIGMASENSE LLC3 citations84
US11693811B2Jul 4, 2023
Low voltage drive circuit with variable oscillating characteristics and methods for use therewith
SIGMASENSE LLC3 citations84
US11592978B2Feb 28, 2023
Integrated touchscreen and external controller
SIGMASENSE LLC2 citations84
US11567135B2Jan 31, 2023
Embedded monitoring electrodes for battery health monitoring
SIGMASENSE LLC2 citations84
US11500024B2Nov 15, 2022
Trend based battery health estimation
SIGMASENSE LLC2 citations84
US11460999B2Oct 4, 2022
Redundant touch system
SIGMASENSE LLC4 citations84
US11429218B2Aug 30, 2022
Segmented ground plane within an active matrix display with concurrent touch and display operations
SIGMASENSE LLC4 citations84
US11269510B2Mar 8, 2022
Identification in touch systems
SIGMASENSE LLC5 citations84
US11269436B2Mar 8, 2022
Touchscreen display with concurrent touch and display operations
SIGMASENSE LLC4 citations84
US11126297B2Sep 21, 2021
Electronic pen with ring-back and other functionalities
SIGMASENSE LLC5 citations84
US11099032B2Aug 24, 2021
Drive sense circuit with drive-sense line
SIGMASENSE LLC7 citations84
US11061082B2Jul 13, 2021
Single line hall effect sensor drive and sense
SIGMASENSE LLC6 citations84
US11056930B2Jul 6, 2021
Wireless power transfer and communications
SIGMASENSE LLC6 citations84
US11029782B2Jun 8, 2021
Light emitting diode (LED) touch display circuit
SIGMASENSE LLC4 citations84
US11029769B2Jun 8, 2021
Pen for use with a touch screen
SIGMASENSE LLC8 citations84
US10996728B2May 4, 2021
Power supply signal conditioning system based on drive-sense circuit (DSC) processing
SIGMASENSE LLC6 citations84
US10917101B2Feb 9, 2021
Analog to digital conversion circuit with very narrow bandpass digital filtering
SIGMASENSE LLC4 citations84
US10908641B1Feb 2, 2021
Display generated data transmission from user device to touchscreen via user
SIGMASENSE LLC6 citations84
US10908718B2Feb 2, 2021
Large touch screen display with integrated electrodes
SIGMASENSE LLC6 citations84
US11182038B2Nov 23, 2021
Encoded data pattern touchscreen sensing system
SIGMASENSE LLC6 citations82
US12277312B2Apr 15, 2025
Single user or few users identification and blocking operable touch sensor device
SIGMASENSE LLC1 citations75
US12292719B2May 6, 2025
Prime mover and generator regulation based on output signal sensing
SIGMASENSE LLC0 citations73
US12216169B2Feb 4, 2025
Battery impedance tracking during charging
SIGMASENSE LLC0 citations73
Showing the top 50 of 269 patents by PatentIndex Score.