Patents
US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026
54 patents granted to the 3 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 Hyliion Holdings Corp.’s names, not what it holds today.
Patents granted
54
54 utility, 1976 to Dec 31, 2025
Granted in 2025
5
Against 15 in 2024 and 3 in 2023
Applications published
66
6 of them in 2025
Names they are printed under
3
a subsidiary, its own name
By yearGrantedApplications published
'16'17'18'19'20'21'22'23'24'25
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
Transport29
Engines, pumps, turbines8
Electrical machinery, apparatus, energy3
Measurement1
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name3 counted
Hyliion Inc. a subsidiary
named as the applicant on its applications, in US
58 publishedHyliion Holdings Corp. its own name
US, as the owner printed on each patent
1 publishedHyliion Holdings Corp its own name
named as the applicant on its applications, in US
7 published
Newest grantseach row opens the USPTO’s own copy
| Granted | Patent | Title | Field | Owner as printed |
|---|
| Oct 14, 2025 | 12,442,329 | Sensor system for a closed-cycle engine | Measurement | Hyliion Holdings Corp. |
| Jun 3, 2025 | 12,319,150 | Trailer-based energy capture and management | Transport | Hyliion Holdings Corp. |
| Apr 29, 2025 | 12,286,092 | Supplemental electric drive with primary engine recognition for electric drive controller adaptation | Transport | Hyliion Holdings Corp. |
| Apr 22, 2025 | 12,281,626 | Piston body for an engine having surface features for interacting with boundary layer | Engines, pumps, turbines | Hyliion Holdings Corp. |
| Feb 18, 2025 | 12,228,094 | System and apparatus for energy conversion | Engines, pumps, turbines | Hyliion Holdings Corp. |
| Dec 31, 2024 | 12,179,738 | Drive train configurations for a vehicle with multiple reversible engines | Transport | Hyliion Holdings Corp. |
| Nov 19, 2024 | 12,145,420 | Dynamic tag e-axle and method for controlling a drivetrain having a dynamic tag e-axle | Transport | Hyliion Holdings Corp. |
| Nov 5, 2024 | 12,136,738 | Regenerative electrical power system with state of charge management in view of predicted and/or scheduled stopover auxiliary power requirements | Transport | Hyliion Holdings Corp. |
| Oct 29, 2024 | 12,129,812 | Engine apparatus and method for operation | Engines, pumps, turbines | Hyliion Holdings Corp. |
| Oct 22, 2024 | 12,122,357 | Drive train configurations for a vehicle agnostic to a power source | Transport | Hyliion Holdings Corp. |
Newest applications publishedan application is a clue, never a plan
| Published | Application | Title | Field | Owner as printed |
|---|
| Dec 4, 2025 | 2025/0373117 | MOVEMENT LIMITING ASSEMBLY FOR A LINEAR ELECTRIC MACHINE | Electrical machinery, apparatus, energy | Hyliion Holdings Corp |
| Dec 4, 2025 | 2025/0373116 | INTEGRATED COUNTERWEIGHT FOR AN ELECTRIC MACHINE | Electrical machinery, apparatus, energy | Hyliion Holdings Corp |
| Oct 16, 2025 | 2025/0323552 | INTEGRATED PISTON ASSEMBLY FOR AN ELECTRIC MACHINE | Electrical machinery, apparatus, energy | Hyliion Holdings Corp |
| Sep 18, 2025 | 2025/0290544 | BEARING SUPPORT FOR A FLUID BEARING OF A CLOSED-CYCLE ENGINE | Mechanical elements | Hyliion Holdings Corp |
| Jul 3, 2025 | 2025/0214412 | RADIATOR ASSEMBLY FOR A CLOSED-CYCLE ENGINE | Transport | Hyliion Holdings Corp |
| Mar 13, 2025 | 2025/0083657 | DRIVE TRAIN CONFIGURATIONS FOR A VEHICLE WITH MULTIPLE REVERSIBLE ENGINES | Transport | Hyliion Inc. |
| Dec 5, 2024 | 2024/0400047 | TWO-STATE BOUNDED CLOSED-LOOP CONTROL OF ACTUATORS | Transport | Hyliion Inc. |
| Oct 17, 2024 | 2024/0343127 | TRAILER-BASED ENERGY CAPTURE AND MANAGEMENT | Transport | Hyliion Inc. · patent 12,319,150 granted from it |
| Jun 27, 2024 | 2024/0208483 | SUPPLEMENTAL ELECTRIC DRIVE WITH PRIMARY ENGINE RECOGNITION FOR ELECTRIC DRIVE CONTROLLER ADAPTATION | Transport | Hyliion Inc. · patent 12,286,092 granted from it |
| May 16, 2024 | 2024/0159201 | MONOLITHIC HEAT-EXCHANGER BODIES | Engines, pumps, turbines | Hyliion Holdings Corp |
What it applied for, 2024 to 2025: Transport 11 · Electrical machinery, apparatus, energy 3 · Thermal processes and apparatus 1 · IT methods for management 1 · Measurement 1 · Engines, pumps, turbines 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.