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For the Inventor, By the Inventor

Solon, OH, United States of America

Energy Focus, Inc.


USPTO Granted Patents = 33

% Expired Patents = 36.4


Trademarks = 13

Forward Citations = 146

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37 inventors (with patents filed for the assignee):

goldMedal Laszlo A Takacs (12 out of 15 patents)

silverMedal John M Davenport (11 out of 119 patents)

bronzeMedal Roger F Buelow (8 out of 16 patents)

4.  Chris H Jenson (7 out of 11 patents)

5.  Gregory P Frankiewicz (7 out of 14 patents)

6.  Roger F Buelow, Ii (7 out of 23 patents)

7.  Jeremiah A Heilman (5 out of 5 patents)

8.  William J Cassarly (5 out of 47 patents)

9.  Thomas L R Davenport (5 out of 7 patents)

10.  Attila Tomasovics (4 out of 7 patents)

11.  Dmitri Dmitrievich Kourennyi (3 out of 3 patents)

12.  Brian Milliff (3 out of 14 patents)

13.  Mark Cartellone (3 out of 3 patents)

14.  Sara Shipley (3 out of 3 patents)

15.  Greg Flies (2 out of 2 patents)


Core Competencies:
LED Lamp
Tubular LED
Ballast Converter
Optical Filtering
Illumination Product
Battery Backup
Lighting Arrangement
Solar Collector
Directional Extraction
Electrical Junction Box
Lighted Display Case
Fiberoptic Luminaire

33 patents:

1. 11425805 - Control circuit for tubular light emitting diode (2022-08-23),
2. 11395396 - System and method for providing high power factor wired lamp control (2022-07-19),
3. 11388801 - Tubular LED ballast buck-boost converter (2022-07-12),
4. 11118741 - LED lamp utilizing optical filtering to counteract effects of color anomalous vision (2021-09-14),
5. 11057981 - System and method for providing high power factor wired lamp control (2021-07-06),
6. 10892615 - Circuit for mitigating electric shock (2021-01-12),
7. 10754664 - Illumination product reconfiguration (2020-08-25),
8. RE47402 - LED lamp system (2019-05-20),
9. 10236716 - Lamp with battery backup capability (2019-03-19),
10. 10222006 - Tubular lamp and lamp socket with power pin connector and signal pin connector (2019-03-05),
11. D822889 - LED endcap (2018-07-10),
12. D809703 - LED endcap (2018-02-06),
13. D783199 - LED endcap (2017-04-04),
14. D783198 - LED endcap (2017-04-04),
15. 9557044 - LED lamp with dual mode operation (2017-01-31),
Company Overview
Energy Focus, Inc. is a leading provider of energy-efficient lighting solutions, specializing in advanced LED technology. The company focuses on developing innovative products that enhance energy savings and sustainability for various sectors, including commercial, industrial, and government applications. Based in Solon, Ohio, Energy Focus is committed to driving the transition to energy-efficient lighting systems, contributing to environmental sustainability while delivering high-quality performance and reliability in its offerings.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

Energy Focus, Inc. USPTO Patent Assignee Logo
33 Patents

#12 in Solon, OH

#453 in Ohio

#10,305 in US

#20,147 in the World

Solon, OH (US)
Solon, OH, United States of America

Energy Focus, Inc.

Forward Citations = 146

37 inventors:

goldMedal Laszlo A Takacs (12 out of 15 patents)

silverMedal John M Davenport (11 out of 119 patents)

bronzeMedal Roger F Buelow (8 out of 16 patents)

4.  Chris H Jenson (7 out of 11 patents)

5.  Gregory P Frankiewicz (7 out of 14 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Energy Focus, Inc.. Retrieved from https://idiyas.com/company/energy-focus

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]
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