Duke Energy Corporation (DUK)
NYSE: DUK · Electric & Other Services Combined · Charlotte, NC · filing with the SEC since 2005
Grade5.9
◀ Past 6.5● Present 5.8▶ Future 5.7
Patents
US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 202667 patents granted to the 8 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 Duke Energy Corporation’s names, not what it holds today.
Patents granted
67
62 utility, 5 design, 1976 to Dec 31, 2025
Granted in 2025
7
Against 4 in 2024 and 9 in 2023
Applications published
60
6 of them in 2025
Names they are printed under
8
its own name, a subsidiary
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
Basic materials chemistry11
Electrical machinery, apparatus, energy7
Chemical engineering4
Audio-visual technology4
Measurement3
Telecommunications1
Computer technology1
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name8 counted
DUKE ENERGY CORPORATION its own name
US, as the owner printed on each patent
8 published
Duke Energy Corporation its own name
named as the applicant on its applications, in US
32 published
Duke Technologies, LLC a subsidiary
US, as the owner printed on each patent
0 published
Duke Technologies, LLC a subsidiary
named as the applicant on its applications, in US
20 published
Florida Progress Corporation a subsidiary
US, as the owner printed on each patent
0 published
Energy Pipelines International Company a subsidiary
US, as the owner printed on each patent
0 published
MCP LLC a subsidiary
US, as the owner printed on each patent
0 published
Piedmont Natural Gas Company a subsidiary
US, as the owner printed on each patent
0 published
Names not counted (2)
Fiber Link, LLC
No country is printed for it. 0 granted and 3 published under it are not counted.
Southern Power Company
Also listed as a subsidiary by SOUTHERN CO. 1 granted and 0 published under it are not counted.
Newest grantseach row opens the USPTO’s own copy
| Granted | Patent | Title | Field | Owner as printed |
|---|---|---|---|---|
| Nov 25, 2025 | 12,480,055 | Pyrolysis reactor system and method | Basic materials chemistry | Duke Technologies, LLC |
| Sep 23, 2025 | 12,421,459 | Process for hydroprocessing of non-petroleum feedstocks with hydrogen production | Basic materials chemistry | Duke Technologies, LLC |
| Aug 19, 2025 | 12,391,893 | Sustainable diesel production from lignins | Basic materials chemistry | Duke Technologies, LLC |
| Jul 22, 2025 | 12,366,499 | Methods of determining flow rates of gas leaks in a pressurized gas system | Computer technology | DUKE ENERGY CORPORATION |
| Mar 4, 2025 | 12,244,143 | Methods of securely controlling utility grid edge devices | Electrical machinery, apparatus, energy | DUKE ENERGY CORPORATION |
| Jan 21, 2025 | 12,203,037 | System for treating renewable feedstocks with integrated hydroprocessing | Chemical engineering | Duke Technologies, LLC |
| Jan 14, 2025 | 12,195,677 | Process for hydroprocessing of non-petroleum feedstocks | Basic materials chemistry | Duke Technologies, LLC |
| Sep 24, 2024 | 12,098,334 | Method for treating renewable feedstocks | Chemical engineering | Duke Technologies, LLC |
| Aug 20, 2024 | 12,068,602 | Advanced power distribution platform | Electrical machinery, apparatus, energy | DUKE ENERGY CORPORATION |
| May 14, 2024 | 11,981,866 | Pyrolysis reactor system and method | Basic materials chemistry | Duke Technologies, LLC |
Newest applications publishedan application is a clue, never a plan
What it applied for, 2024 to 2025: Basic materials chemistry 5 · Computer technology 1 · Chemical engineering 1 · IT methods for management 1 · Transport 1 · Electrical machinery, apparatus, energy 1.
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.