Thomas J Sullivan

This inventor holds 22 USPTO granted patents and 6 published patent applications and 3 EPO patents, primarily in Physiological Monitoring. Top assignees: Apple Inc., International Business Machines Corporation, Neurosky, Inc.. Active years: 1981-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Thomas J Sullivan. Retrieved from https://idiyas.com/inventor/thomas-j-sullivan-2l5g9iw0

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 22 (Patent Applications = 6)

% Patents Active = 72.7

EPO Patents = 3 (Patent Applications = 3)

Average Co-Inventor Count = 2.6

ph-index = 7

Forward Citations = 132(Granted Patents)

Location History:

Fair Oaks, CA (US) (1981)
Lenox, MA (US) (1994)
Timonium, MD (US) (1997)
Burbank, CA (US) (2009)
San Diego, CA (US) (2014)
San Jose, CA (US) (2006 - 2024)
Cupertino, CA (US) (2019 - 2024)

Company Filing History:

International Business Machines Corporation

University of California

patents

5. 8 out of 834,570

Other

patents

where one patent can have more than one assignee

Years Active: 1981-2025

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Areas of Expertise:

Blood Pressure Monitoring

Physiological Sensor

Pulse Transit Time

Wrist-Worn Device

Error Correction

Impedance Measurements

Biopotential Sensor

Sensory-Evoked Potential

Non-Contact Sensors

Cuff Designs

Accelerometer

Multi-Function Devices

22 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12350071 - Contact detection for physiological sensor (2025-07-08),

2. 12220213 - Blood pressure monitoring using a multi-function wrist-worn device (2025-02-11),

3. 11980480 - Contact detection for physiological sensor (2024-05-14),

4. 11918324 - Electrical coupling of pulse transit time (PTT) measurement system to heart for blood pressure measurement (2024-03-05),

5. 11633114 - Cuff designs and methods (2023-04-25),

6. 11478193 - Contact detection for physiological sensor (2022-10-25),

7. 10881307 - Devices and systems for correcting errors in blood pressure measurements (2021-01-05),

8. 10849555 - Devices and systems for correcting errors in blood pressure measurements (2020-12-01),

9. 10779738 - Electrical coupling of pulse transit time (PTT) measurement system to heart for blood pressure measurement (2020-09-22),

10. 10772512 - Blood pressure monitoring using a multi-function wrist-worn device (2020-09-15),

11. 10702171 - Systems, devices, and methods for measuring blood pressure of a user (2020-07-07),

12. 10555686 - Removing parasitic effects from body impedance measurements with wrist-worn and/or other devices (2020-02-11),

13. 10517489 - Wrist worn accelerometer for pulse transit time (PTT) measurements of blood pressure (2019-12-31),

14. 8780512 - Low leakage ESD structure for non-contact bio-signal sensors (2014-07-15),

15. 8694084 - Non-contact biopotential sensor (2014-04-08),

Title: Thomas J Sullivan: A Pioneer in Health Monitoring Technologies

Introduction

Thomas J Sullivan, based in San Jose, CA, has made significant contributions to the field of health monitoring through his innovative inventions. With a strong portfolio of 21 patents, his work exemplifies the integration of advanced technology in everyday health management.

Latest Patents

Among his latest patents, Sullivan has developed cutting-edge methods and devices for blood pressure monitoring using a multi-function wrist-worn device. This innovative approach involves measuring the transit time of a blood pulse from the left ventricle to the wrist. By utilizing a pulse ejection sensor and a pulse arrival sensor, the device accurately assesses relative blood pressure values and computes absolute blood pressure based on reference values.

Additionally, he has patented a device focused on contact detection for physiological sensors. This technology ensures that physiological signals captured by sensors meet the required waveform characteristics, thus enhancing the accuracy of health data collected from mobile and wearable devices. The incorporation of stimulation circuitry and saturation detection circuitry provides a holistic approach to monitoring physiological signals.

Career Highlights

Throughout his career, Thomas J Sullivan has been associated with prominent companies, including Apple Inc., where he has leveraged his expertise to develop impactful health monitoring solutions. His contributions have paved the way for advancements in wearable health technology, making it more accessible and reliable for users.

Collaborations

Sullivan has collaborated with esteemed professionals, including Richard C Kimoto and Ravi Narasimhan. Their combined efforts have strengthened the innovations that emerged from their teamwork, pushing the boundaries of what is possible in health technology.

Conclusion

Thomas J Sullivan’s dedication to innovation in health monitoring reflects his commitment to improving human well-being through technology. With his extensive portfolio of patents and collaborative spirit, he continues to influence the development of advanced health solutions that benefit society as a whole.

Profile summary based on public USPTO records.