American Superconductor Corporation (AMSC)
Nasdaq: AMSC · Motors & Generators · Devens, MA · filing with the SEC since 1996
Grade6.5
◀ Past 6.1● Present 6.3▶ Future 7.3
Patents
US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026248 patents granted to the 4 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 American Superconductor Corporation’s names, not what it holds today.
Patents granted
248
247 utility, 1 reissue, 1976 to Dec 31, 2025
Granted in 2025
none
Against 1 in 2024 and 2 in 2023
Applications published
78
since 2001, to Dec 31, 2025
Names they are printed under
4
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
Engines, pumps, turbines2
Electrical machinery, apparatus, energy2
Handling1
Semiconductors1
Surface technology, coating1
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name4 counted
American Superconductor Corporation its own name
US, as the owner printed on each patent
60 published
American Superconductor Corporation its own name
named as the applicant on its applications, in US
17 published
AMSC Austria GmbH a subsidiary
AT, as the owner printed on each patent
0 published
Northeast Power Systems, Inc. a subsidiary
US, as the owner printed on each patent
1 published
Names not counted (1)
AMERICAN SUPERCONDUCTOR CORP /DE/
No country is printed for it. 0 granted and 14 published under it are not counted.
Newest grantseach row opens the USPTO’s own copy
| Granted | Patent | Title | Field | Owner as printed |
|---|---|---|---|---|
| Jul 23, 2024 | 12,048,253 | Electro-formed metal foils | Surface technology, coating | American Superconductor Corporation |
| Oct 24, 2023 | 11,794,872 | Electrical power system for a watercraft | Electrical machinery, apparatus, energy | American Superconductor Corporation |
| May 23, 2023 | 11,657,930 | High temperature superconducting wires having increased engineering current densities | Semiconductors | American Superconductor Corporation |
| Nov 22, 2022 | 11,509,139 | Load re-balancing on a multi-phase power system | Electrical machinery, apparatus, energy | American Superconductor Corporation |
| Jul 19, 2022 | 11,390,478 | Roll-to-roll apparatus for processing metal tapes with a ceramic coating | Handling | American Superconductor Corporation |
| Mar 29, 2022 | 11,286,910 | Yaw auto-calibration for a wind turbine generator | Engines, pumps, turbines | American Superconductor Corporation |
| Sep 7, 2021 | 11,111,903 | Yaw auto-calibration for a wind turbine generator | Engines, pumps, turbines | American Superconductor Corporation |
| Apr 7, 2020 | 10,615,600 | Reactive power system in communication with motor starter system | Electrical machinery, apparatus, energy | Northeast Power Systems, Inc. |
| Mar 26, 2019 | 10,242,770 | Long length high temperature superconducting wires with uniform ion implanted pinning microstructures | Electrical machinery, apparatus, energy | American Superconductor Corporation |
| Jan 29, 2019 | 10,193,340 | Multi-level cascaded H-bridge STATCOM circulating cooling fluid within enclosure | Electrical machinery, apparatus, energy | American Superconductor Corporation |
Newest applications publishedan application is a clue, never a plan
| Published | Application | Title | Field | Owner as printed |
|---|---|---|---|---|
| Dec 5, 2024 | 2024/0407270 | ELECTRO-FORMED METAL FOILS | Surface technology, coating | American Superconductor Corporation |
| Jun 2, 2022 | 2022/0169354 | ELECTRICAL POWER SYSTEM FOR A WATERCRAFT | Transport | American Superconductor Corporation · patent 11,794,872 granted from it |
| Feb 10, 2022 | 2022/0045260 | Electro-Formed Metal Foils | Surface technology, coating | American Superconductor Corporation · patent 12,048,253 granted from it |
| Nov 4, 2021 | 2021/0344199 | LOAD RE-BALANCING ON A MULTI-PHASE POWER SYSTEM | Electrical machinery, apparatus, energy | American Superconductor Corporation · patent 11,509,139 granted from it |
| Nov 5, 2020 | 2020/0350101 | HIGH TEMPERATURE SUPERCONDUCTING WIRES HAVING INCREASED ENGINEERING CURRENT DENSITIES | Semiconductors | American Superconductor Corporation · patent 11,657,930 granted from it |
| Jul 16, 2020 | 2020/0227917 | REACTIVE POWER SYSTEM | Electrical machinery, apparatus, energy | Northeast Power Systems, Inc. |
| Mar 19, 2020 | 2020/0088171 | YAW AUTO-CALIBRATION FOR A WIND TURBINE GENERATOR | Engines, pumps, turbines | American Superconductor Corporation · patent 11,111,903 granted from it |
| Mar 19, 2020 | 2020/0088166 | YAW AUTO-CALIBRATION FOR A WIND TURBINE GENERATOR | Engines, pumps, turbines | American Superconductor Corporation · patent 11,286,910 granted from it |
| Jun 13, 2019 | 2019/0176951 | HYBRID ELECTRICAL AND MECHANICAL PROPULSION AND ENERGY SYSTEM FOR A SHIP | Transport | American Superconductor Corporation · patent 10,669,001 granted from it |
| Mar 7, 2019 | 2019/0074757 | HIGH TEMPERATURE SUPERCONDUCTOR GENERATOR WITH INCREASED ROTATIONAL INERTIA | Electrical machinery, apparatus, energy | American Superconductor Corporation · patent 10,601,299 granted from it |
What it applied for, 2024 to 2025: Surface technology, coating 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.