Berkeley, CA, United States of America

Daniel Joel Freschl

This inventor holds 14 USPTO granted patents and 4 published patent applications, primarily in Wearable Technology. Top assignees: Fitbit, Inc., Other. Active years: 2012-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Daniel Joel Freschl. Retrieved from https://idiyas.com/inventor/daniel-joel-freschl

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

Calculating rank
USPTO Granted Patents = 14 

% Patents Active = 92.9

Average Co-Inventor Count = 2.9

ph-index = 5

Forward Citations = 149(Granted Patents)


Company Filing History:

goldMedal11 out of 565 
 
Fitbit, Inc.
 patents
silverMedal2 out of 834,601 
Other
 patents
where one patent can have more than one assignee

Years Active: 2012-2024

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Areas of Expertise:
Pressure Sensor
Wearable Device
Breathing Disturbances
Heart Rate Monitoring
Photoplethysmography
Optical Measurement
Light Diffuser
Illuminating Device
Multi-Channel
Portable Device
Energizing Mechanism
Light Barrier
14 patents (USPTO):Explore Patents

Title: Innovations by Daniel Joel Freschl

Introduction

Daniel Joel Freschl is an accomplished inventor based in Berkeley, CA, with a remarkable portfolio of 14 patents. His work primarily focuses on enhancing the accuracy of physiological data through innovative wearable technology. Freschl's contributions have significantly impacted the field of health monitoring devices.

Latest Patents

One of Freschl's latest patents involves the integration of pressure sensors into wearable devices. This innovation aims to validate the accuracy of physiological data measured through skin contact by characterizing the forces at the surfaces where data is collected. Conventional devices often rely on users to ensure proper fitting of skin-based sensors, which can lead to inaccuracies in data. Freschl's approach addresses this issue by monitoring the forces acting on the device's housing, allowing for the characterization of skin sensor interfaces. This technology not only provides confidence metrics for physiological data but also enables users to be notified when a device is not seated properly. In some instances, the data may even be calibrated based on the fit of the device.

Career Highlights

Freschl has worked with notable companies, including Fitbit, Inc., where he has contributed to the development of cutting-edge wearable technology. His expertise in sensor integration and data accuracy has positioned him as a key player in the industry.

Collaborations

Freschl has collaborated with talented individuals such as Peter W. Richards and Chris Hanrahan Sarantos, further enhancing the innovative potential of his projects.

Conclusion

Daniel Joel Freschl's work exemplifies the intersection of technology and health, showcasing how innovations in wearable devices can lead to more accurate physiological monitoring. His contributions continue to shape the future of health technology.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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