EnerSys, Inc. (ENS)
NYSE: ENS · Miscellaneous Electrical Machinery, Equipment & Supplies · Reading, PA · filing with the SEC since 2004
Grade7.2
◀ Past 7.9● Present 7.4▶ Future 6.1
Patents
US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 202636 patents granted to the 9 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 EnerSys, Inc.’s names, not what it holds today.
Patents granted
36
35 utility, 1 design, 1976 to Dec 31, 2025
Granted in 2025
3
Against 2 in 2024 and 1 in 2023
Applications published
49
5 of them in 2025
Names they are printed under
9
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
Electrical machinery, apparatus, energy7
Measurement4
Telecommunications1
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name9 counted
Alpha Technologies Services LLC a subsidiary
US, as the owner printed on each patent
5 published
EnerSys Delaware Inc. a subsidiary
named as the applicant on its applications, in US
27 published
ALPHA TECHNOLOGIES SERVICES, INC. a subsidiary
named as the applicant on its applications, in US
11 published
EH Europe GmbH a subsidiary
CH, as the owner printed on each patent
1 published
EH Europe GmbH a subsidiary
named as the applicant on its applications, in CH
5 published
EnerSys Delaware Inc. a subsidiary
US, as the owner printed on each patent
0 published
ABSL Power Solutions Ltd. a subsidiary
GB, as the owner printed on each patent
0 published
Bren-Tronics Defense LLC a subsidiary
US, as the owner printed on each patent
0 published
ENERSYS ADVANCED SYSTEMS, INC. a subsidiary
US, as the owner printed on each patent
0 published
Names not counted (5)
Alpha Technologies Ltd.
Most of its patents print US; this name counts in CA. 32 granted and 15 published under it are not counted.
Alpha Technologies Ltd.
Most of its patents print US; this name counts in CA. 0 granted and 21 published under it are not counted.
Hawker GmbH
Most of its patents print FR; this name counts in DE. 4 granted and 0 published under it are not counted.
Hawker GmbH
Most of its patents print US; this name counts in DE. 1 granted and 1 published under it are not counted.
Hawker GmbH
Most of its patents print FR; this name counts in DE. 0 granted and 1 published under it are not counted.
Newest grantseach row opens the USPTO’s own copy
| Granted | Patent | Title | Field | Owner as printed |
|---|---|---|---|---|
| Jul 15, 2025 | 12,362,421 | Ballistic resistant case for rechargeable batteries | Electrical machinery, apparatus, energy | Bren-Tronics Defense LLC |
| Mar 11, 2025 | 12,249,849 | Wireless power transfer system and method of controlling a wireless power transfer system | Electrical machinery, apparatus, energy | EnerSys Delaware Inc. |
| Feb 25, 2025 | D1,063,834 | Charging station for electric vehicles | EnerSys Delaware Inc. | |
| Jul 30, 2024 | 12,051,937 | Controlling a wireless power transfer system | Electrical machinery, apparatus, energy | EnerSys Delaware Inc. |
| Jul 16, 2024 | 12,040,121 | Electrical transformer and method of manufacturing an electrical transformer | Electrical machinery, apparatus, energy | EnerSys Delaware Inc. |
| Dec 19, 2023 | 11,846,643 | Test sample handling system with rotary carousel | Measurement | Alpha Technologies Services LLC |
| Nov 15, 2022 | 11,502,726 | Coaxial cable power signal distribution systems and methods | Telecommunications | Alpha Technologies Services LLC |
| Nov 8, 2022 | 11,493,418 | Rheometer docking station | Measurement | Alpha Technologies Services LLC |
| May 3, 2022 | 11,322,974 | Ferroresonant transformer systems and methods | Electrical machinery, apparatus, energy | Alpha Technologies Services LLC |
| Jun 15, 2021 | 11,035,773 | Torsional rheometer that maintains a more uniform cavity pressure | Measurement | Alpha Technologies Services LLC |
Newest applications publishedan application is a clue, never a plan
| Published | Application | Title | Field | Owner as printed |
|---|---|---|---|---|
| Oct 23, 2025 | 2025/0329887 | BATTERY BUSBAR | Electrical machinery, apparatus, energy | EnerSys Delaware Inc. |
| Oct 23, 2025 | 2025/0329867 | BATTERY AND VENTING ARRANGEMENT | Electrical machinery, apparatus, energy | EnerSys Delaware Inc. |
| Aug 28, 2025 | 2025/0273385 | PLANAR TRANSFORMER FOR DC/DC CONVERTER | Electrical machinery, apparatus, energy | EnerSys Delaware Inc. |
| Apr 24, 2025 | 2025/0128626 | METHODS, SYSTEMS, AND DEVICES FOR INDUCTICTIVE CHARGING OF VEHICLE BATTERIES | Transport | EnerSys Delaware Inc. |
| Feb 27, 2025 | 2025/0065744 | Charging Station for Charging Electric Vehicles | Transport | EnerSys Delaware Inc. |
| Dec 14, 2023 | 2023/0402721 | Bipole Frame with Improved Solid Electrical Connection and Bipolar Batteries Including the Same | Electrical machinery, apparatus, energy | EnerSys Delaware Inc. |
| Jul 20, 2023 | 2023/0231265 | Battery and Safety Arrangement | Electrical machinery, apparatus, energy | EnerSys Delaware Inc. |
| Jun 22, 2023 | 2023/0198082 | Metal Ion Battery Safety Arrangement | Electrical machinery, apparatus, energy | EnerSys Delaware Inc. |
| Jun 22, 2023 | 2023/0198029 | Battery Safety Arrangement | Electrical machinery, apparatus, energy | EnerSys Delaware Inc. |
| May 11, 2023 | 2023/0142500 | BATTERY MODULES WITH ANTI-ARCING, HOT SWAPPING, AND/OR SELF-DISABLING FEATURES | Electrical machinery, apparatus, energy | EnerSys Delaware Inc. |
What it applied for, 2024 to 2025: Electrical machinery, apparatus, energy 3 · Transport 2.
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.