Energy Focus, Inc. (EFOI)
Nasdaq: EFOI · Electric Lighting & Wiring Equipment · Solon, OH · filing with the SEC since 1996
Patents
US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 202633 patents granted to the 2 names below, as the owner printed on each patent when it was granted. A later sale, a lapse or an expiry is not read, so this is what was granted to Energy Focus, Inc.’s names, not what it holds today.
Patents granted
33
27 utility, 5 design, 1 reissue, 1976 to Dec 31, 2025
Granted in 2025
none
in the last year the record reads
Applications published
31
since 2001, to Dec 31, 2025
Names they are printed under
2
its own name
By yearGrantedApplications published
Each pair is one calendar year. Applications are published about eighteen months after filing, so the newest years read low.
What they are aboutgrants since 2021
Electrical machinery, apparatus, energy6
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name2 counted
ENERGY FOCUS, INC. its own name
US, as the owner printed on each patent
20 published
ENERGY FOCUS, INC. its own name
named as the applicant on its applications, in US
11 published
Newest grantseach row opens the USPTO’s own copy
| Granted | Patent | Title | Field | Owner as printed |
|---|---|---|---|---|
| Aug 23, 2022 | 11,425,805 | Control circuit for tubular light emitting diode | Electrical machinery, apparatus, energy | ENERGY FOCUS, INC. |
| Jul 19, 2022 | 11,395,396 | System and method for providing high power factor wired lamp control | Electrical machinery, apparatus, energy | ENERGY FOCUS, INC. |
| Jul 12, 2022 | 11,388,801 | Tubular LED ballast buck-boost converter | Electrical machinery, apparatus, energy | ENERGY FOCUS, INC. |
| Sep 14, 2021 | 11,118,741 | LED lamp utilizing optical filtering to counteract effects of color anomalous vision | Electrical machinery, apparatus, energy | ENERGY FOCUS, INC. |
| Jul 6, 2021 | 11,057,981 | System and method for providing high power factor wired lamp control | Electrical machinery, apparatus, energy | ENERGY FOCUS, INC. |
| Jan 12, 2021 | 10,892,615 | Circuit for mitigating electric shock | Electrical machinery, apparatus, energy | ENERGY FOCUS, INC. |
| Aug 25, 2020 | 10,754,664 | Illumination product reconfiguration | Electrical machinery, apparatus, energy | ENERGY FOCUS, INC. |
| May 21, 2019 | RE47,402 | LED lamp system | ENERGY FOCUS, INC. | |
| Mar 19, 2019 | 10,236,716 | Lamp with battery backup capability | Electrical machinery, apparatus, energy | ENERGY FOCUS, INC. |
| Mar 5, 2019 | 10,222,006 | Tubular lamp and lamp socket with power pin connector and signal pin connector | Electrical machinery, apparatus, energy | ENERGY FOCUS, INC. |
Newest applications publishedan application is a clue, never a plan
| Published | Application | Title | Field | Owner as printed |
|---|---|---|---|---|
| Oct 21, 2021 | 2021/0322597 | UV DISINFECTION SYSTEM | Electrical machinery, apparatus, energy | ENERGY FOCUS, INC. |
| Aug 5, 2021 | 2021/0243865 | TUBULAR LED BALLAST BUCK-BOOST CONVERTER | Electrical machinery, apparatus, energy | ENERGY FOCUS, INC. · patent 11,388,801 granted from it |
| Aug 5, 2021 | 2021/0243862 | CONTROL CIRCUIT FOR TUBULAR LIGHT EMITTING DIODE | Electrical machinery, apparatus, energy | ENERGY FOCUS, INC. · patent 11,425,805 granted from it |
| Jul 22, 2021 | 2021/0227672 | SYSTEM AND METHOD FOR PROVIDING HIGH POWER FACTOR WIRED LAMP CONTROL | Electrical machinery, apparatus, energy | ENERGY FOCUS, INC. · patent 11,395,396 granted from it |
| Nov 21, 2019 | 2019/0354381 | ILLUMINATION PRODUCT RECONFIGURATION | Electrical machinery, apparatus, energy | ENERGY FOCUS, INC. · patent 10,754,664 granted from it |
| May 23, 2019 | 2019/0157902 | LAMP WITH BATTERY BACKUP CAPABILITY | Electrical machinery, apparatus, energy | ENERGY FOCUS, INC. |
| Oct 25, 2018 | 2018/0310370 | CIRCUIT FOR MITIGATING ELECTRIC SHOCK | Electrical machinery, apparatus, energy | ENERGY FOCUS, INC. · patent 10,892,615 granted from it |
| May 10, 2018 | 2018/0128431 | LED LAMP UTILIZING OPTICAL FILTERING TO COUNTERACT EFFECTS OF COLOR ANOMALOUS VISION | Electrical machinery, apparatus, energy | ENERGY FOCUS, INC. · patent 11,118,741 granted from it |
| Oct 26, 2017 | 2017/0310157 | LAMP WITH BATTERY BACKUP CAPABILITY | Electrical machinery, apparatus, energy | ENERGY FOCUS, INC. · patent 10,236,716 granted from it |
| Sep 21, 2017 | 2017/0268731 | LAMP AND LAMP SOCKET HAVING MULTIPLE CONNECTORS | Electrical machinery, apparatus, energy | ENERGY FOCUS, INC. · patent 10,222,006 granted from it |
A patent is counted where the owner printed on it when it was granted carries the company’s own name, a former name, the name of a subsidiary its annual report lists, or its own name with a patent-holding phrase (Technology Licensing, Intellectual Property and the like), once the legal form, case and punctuation are set aside, and prints a country that name counts in. PatentsView’s data are published under the Creative Commons Attribution 4.0 licence. Source: PatentsView's granted patents and pre-grant publications, disambiguated, from the USPTO's Open Data Portal, through Dec 31, 2025, read Oct 27, 2026.