For the Inventor, By the Inventor

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Wilmington, DE, United States of America

Sigmasense, Llc.

USPTO Granted Patents = 368

EPO Patents = 2

Trademarks = 15

Forward Citations = 304

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22 inventors (with patents filed for the assignee):

Daniel Keith Van Ostrand (266 out of 294 patents)

Richard Stuart Seger, Jr (227 out of 229 patents)

Patrick Troy Gray (201 out of 209 patents)

4. Gerald Dale Morrison (182 out of 184 patents)

5. Timothy W Markison (115 out of 492 patents)

6. Michael Shawn Gray (86 out of 88 patents)

7. Kevin Joseph Derichs (69 out of 80 patents)

8. Phuong Huynh (68 out of 72 patents)

9. Shayne X Short (35 out of 36 patents)

10. John Christopher Price (26 out of 29 patents)

11. Michael Frederick David Olley (17 out of 17 patents)

12. Grant Howard McGibney (15 out of 49 patents)

13. Hans Howard Eilers (7 out of 7 patents)

14. Sarah Marie Derichs (7 out of 7 patents)

15. Patricia Markison Healy (6 out of 6 patents)

Core Competencies:

Capacitance Touch Screen

E-Field Communications

Drive Sense Circuit

Multiuser Interaction

Fingerprint Imaging

Wireless Power Transfer

Pressure Detection

Touchless Gesture Detection

Analog to Digital Conversion

Flexible Touch Screen

Impedance Sensing Circuit

Data Communication

368 patents: Sort by Forward Citations

1. 12481400 - Enhanced capacitance touch screen display and methods for use therewith (2025-11-25),

2. 12449462 - Drive sense circuit with transient suppression (2025-10-21),

3. 12446798 - Personal monitoring system for monitoring body conditions using e-field communications (2025-10-21),

4. 12443303 - Panel detection discrimination for extended sensor panels (2025-10-14),

5. 12411562 - Passive device with compressible pressure assembly for z-direction capacitance detection (2025-09-09),

6. 12409326 - Drive-sense circuit (DSC) serviced electrocardiogram (ECG) leads (2025-09-09),

7. 12407196 - Wireless power transfer and communications (2025-09-02),

8. 12405696 - No-ground plane differential touch screen display (2025-09-02),

9. 12373070 - System for detecting and validating multiuser interaction with interface elements via signaling through users bodies (2025-07-29),

10. 12360641 - System for detecting and validating multiuser interaction with interface elements via perimeter sensors (2025-07-15),

11. 12360630 - Touch sensor device with differentiated priority sensing region (2025-07-15),

12. 12360628 - Activation of different subsets of drive-sense circuits in accordance with different modes of operation of a touch-based device (2025-07-15),

13. 12352713 - Organic and/or inorganic material test system using differential drive-sense circuits (2025-07-08),

14. 12321560 - Fingerprint imaging device incorporating electrodes and drive-sense circuitry (2025-06-03),

15. 12308851 - Companding analog current to digital converter (2025-05-20),

SigmaSense, LLC. is a leading provider of advanced touch sensing solutions for a wide range of applications. Their innovative approach to touch sensing technology allows for highly accurate and responsive touch screens, enabling superior user experiences. With their cutting-edge solutions, SigmaSense is revolutionizing the touch sensing industry and driving the development of next-generation touch-enabled devices.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

368 Patents

#20 in Wilmington, DE

#29 in Delaware

#1,198 in US

#2,425 in the World

Wilmington, DE, United States of America

Sigmasense, Llc.

Forward Citations = 304

22 inventors:

Daniel Keith Van Ostrand (266 out of 294 patents)

Richard Stuart Seger, Jr (227 out of 229 patents)

Patrick Troy Gray (201 out of 209 patents)

4. Gerald Dale Morrison (182 out of 184 patents)

5. Timothy W Markison (115 out of 492 patents)

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