% Expired Patents = 50.0

EPO Patents = 1

Forward Citations = 8

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3 inventors (with patents filed for the assignee):

Matthew Dorson (2 out of 11 patents)

Sorin Grama (2 out of 3 patents)

Rebecca Christianson (2 out of 2 patents)

2 patents: Sort by Forward Citations

1. 10088243 - Thermal energy battery with enhanced heat exchange capability and modularity (2018-10-02),

2. 9557120 - Thermal energy battery with enhanced heat exchange capability and modularity (2017-01-31),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

2 Patents

#533 in Boston, MA

#4,928 in Massachusetts

#94,841 in US

Boston, MA, United States of America

Promethean Power Systems, Inc.

Forward Citations = 8

3 inventors:

Matthew Dorson (2 out of 11 patents)

Sorin Grama (2 out of 3 patents)

Rebecca Christianson (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Promethean Power Systems, Inc.. Retrieved from https://idiyas.com/company/promethean-power-systems

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

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]

1 patent (EPO):

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]