FuelCell Energy, Inc. (FCEL)
Nasdaq: FCEL · Electrical Industrial Apparatus · Danbury, CT · filing with the SEC since 1996
Patents
US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026224 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 FuelCell Energy, Inc.’s names, not what it holds today.
Patents granted
224
224 utility, 1976 to Dec 31, 2025
Granted in 2025
15
Against 12 in 2024 and 16 in 2023
Applications published
169
9 of them in 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
Electrical machinery, apparatus, energy65
Chemical engineering3
Thermal processes and apparatus3
Surface technology, coating2
Machine tools2
Materials, metallurgy1
Engines, pumps, turbines1
Environmental technology1
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name4 counted
FUELCELL ENERGY, INC its own name
US, as the owner printed on each patent. 4 more under the same name are not counted (printed in CA)
18 published
FuelCell Energy, Inc. its own name
named as the applicant on its applications, in US. 1 more under the same name are not counted (printed in CY)
123 published
VERSA POWER SYSTEMS, LTD a subsidiary
CA, as the owner printed on each patent
13 published
VERSA POWER SYSTEMS, LTD a subsidiary
named as the applicant on its applications, in US
15 published
Newest grantseach row opens the USPTO’s own copy
| Granted | Patent | Title | Field | Owner as printed |
|---|---|---|---|---|
| Dec 30, 2025 | 12,512,489 | External mixer-eductor-oxidizer and module connections thereof | Electrical machinery, apparatus, energy | FUELCELL ENERGY, INC |
| Nov 18, 2025 | 12,476,267 | Carbon dioxide production from carbonate fuel cells | Electrical machinery, apparatus, energy | FUELCELL ENERGY, INC |
| Nov 18, 2025 | 12,476,264 | System for rebalancing a pressure differential in a fuel cell using gas injection | Electrical machinery, apparatus, energy | FUELCELL ENERGY, INC |
| Sep 9, 2025 | 12,412,913 | System including fuel cell assembly voltage monitor | Electrical machinery, apparatus, energy | FUELCELL ENERGY, INC |
| Aug 5, 2025 | 12,381,246 | Redox mitigating solid oxide cell compositions | Electrical machinery, apparatus, energy | VERSA POWER SYSTEMS, LTD |
| Jul 29, 2025 | 12,374,703 | Flow field baffle for molten carbonate fuel cell cathode | Electrical machinery, apparatus, energy | FUELCELL ENERGY, INC |
| Jul 8, 2025 | 12,355,085 | Cathode collector structures for molten carbonate fuel cell | Electrical machinery, apparatus, energy | FUELCELL ENERGY, INC |
| Jul 1, 2025 | 12,347,910 | Fuel cell power plant with a racked fuel cell module | Electrical machinery, apparatus, energy | FUELCELL ENERGY, INC |
| Jun 17, 2025 | 12,334,607 | Fuel cell assembly with external manifold for parallel flow | Electrical machinery, apparatus, energy | FUELCELL ENERGY, INC |
| Jun 10, 2025 | 12,327,888 | Compact high temperature electrochemical cell stack architecture | Electrical machinery, apparatus, energy | VERSA POWER SYSTEMS, LTD |
Newest applications publishedan application is a clue, never a plan
| Published | Application | Title | Field | Owner as printed |
|---|---|---|---|---|
| Nov 27, 2025 | 2025/0364574 | CATHODE COLLECTOR STRUCTURES FOR MOLTEN CARBONATE FUEL CELL | Electrical machinery, apparatus, energy | FuelCell Energy, Inc. |
| Sep 4, 2025 | 2025/0279448 | FUEL CELL ASSEMBLY WITH EXTERNAL MANIFOLD FOR PARALLEL FLOW | Electrical machinery, apparatus, energy | FuelCell Energy, Inc. |
| May 22, 2025 | 2025/0167257 | ELECTROCHEMICAL CELL FLOW FIELDS | Electrical machinery, apparatus, energy | FuelCell Energy, Inc. |
| May 8, 2025 | 2025/0146141 | Hybrid Electrochemical Method and System for Syngas Production | Electrical machinery, apparatus, energy | FuelCell Energy, Inc. |
| Apr 17, 2025 | 2025/0125393 | HIGH HYDROGEN UTILIZATION FUEL CELL SYSTEM | Electrical machinery, apparatus, energy | FuelCell Energy, Inc. |
| Apr 10, 2025 | 2025/0116022 | SOLID OXIDE ELECTROLYSIS CELL SYSTEM AND A METHOD OF OPERATING A SOLID OXIDE ELECTROLYSIS CELL SYSTEM | Surface technology, coating | VERSA POWER SYSTEMS, LTD |
| Apr 10, 2025 | 2025/0116007 | ELECTROCHEMICAL HYDROGEN SEPARATION AND GENERATION PROCESS FOR AMMONIA SYNTHESIS GAS | Surface technology, coating | FuelCell Energy, Inc. |
| Mar 27, 2025 | 2025/0099909 | FLUE GAS POLISHING SYSTEM | Environmental technology | FuelCell Energy, Inc. |
| Jan 23, 2025 | 2025/0030027 | REDOX MITIGATING SOLID OXIDE CELL COMPOSITIONS | Electrical machinery, apparatus, energy | VERSA POWER SYSTEMS, LTD |
| Aug 22, 2024 | 2024/0282991 | SYSTEM AND METHOD FOR PRODUCING HYDROGEN USING HIGH TEMPERATURE FUEL CELLS | Electrical machinery, apparatus, energy | FuelCell Energy, Inc. · patent 12,322,842 granted from it |
What it applied for, 2024 to 2025: Electrical machinery, apparatus, energy 18 · Surface technology, coating 4 · Environmental technology 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.