Hydrogen-Based Synthetic Fuels Patents: Who Leads, Where the Gaps Are 2026
- Two named assignees account for all 17 records in scope, with the leader alone tied to 16 of them — a field defined by one dominant filer rather than a crowded race.
- Filing peaked in 2023 at 9 records and has since fallen off, so the 2026 figure of zero should be read against an 18-month publication lag rather than as a stop in activity.
- Aircraft propulsion turns up more than fuel-cell chemistry itself, with B64D aircraft equipment present in 52.9% of records alongside H01M fuel cells at 58.8% — this is an aviation-first push, not a generic fuel-cell filing pattern.
What this landscape covers
This dataset tracks patent families matching hydrogen-derived and power-to-liquid synthetic fuel routes, filtered against operating parameters like electrolyzer stack design, gas purity and hydrogen carrier handling. It is a narrow, technically specific slice: 17 published records across five receiving offices, concentrated in a handful of filing years.
The record set is small enough that a single applicant's strategy shapes the whole picture. Read the trend and assignee data together with that in mind, not as a proxy for the broader hydrogen economy.
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Filing trend and technical composition
Seventeen records, filed mostly in the United Kingdom, sketch a narrow but active corridor between fuel-cell hardware and aircraft propulsion systems.
Filings rose sharply into 2023, then dropped
Activity starts at a single record in 2017, builds toward a peak of 9 records in 2023, and falls away toward the 2026 cut-off. Because publication typically lags filing by around 18 months, the apparent decline in the most recent year overstates any real slowdown.
Fuel cells and aircraft equipment dominate the classification mix
H01M (batteries, cells and fuel cells) appears on 58.8% of the 17 records and B64D (aircraft equipment) on 52.9%, with F02C (gas-turbine plants) close behind at 41.2%. Because a single record can carry several IPC classes, these figures overlap rather than sum to 100%, and together they point to hybrid fuel-cell-plus-turbine propulsion architectures as the dataset's centre of gravity.
Shares are the percentage of the 17 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
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Try EurekaThe records shaping this space
Aircraft propulsion system and method (US20260008551A1)
The filing describes a propulsion system combining a fuel-cell arrangement for generating electrical energy with a gas generator built from a compressor, combustor and turbine, plus separate hydrogen and oxygen sources. The gas generator can be selectively used to supply additional electrical energy for propulsion, layering a combustion-driven turbine path on top of the fuel-cell path within a single aircraft system.Filed by GKN Aerospace Services Limited, published 2026-01-08.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | GB2620439A | Apparatus | 4 |
| 2 | WO2024009090A1 | Aircraft propulsion system and method | 3 |
| 3 | GB2620438A | Apparatus | 3 |
| 4 | WO2024009088A1 | Aircraft propulsion system, apparatus and method | 2 |
| 5 | US20260015095A1 | Aircraft propulsion system and method | 2 |
| 6 | WO2024009097A1 | Aircraft propulsion system and method | 2 |
| 7 | GB2620441A | Apparatus | 2 |
Citation counts favour older records simply because they have had more time to be cited; treat them as a signal of influence within this corpus, not as a ranking of current technical importance.
Publication numbers are shown where the record carries one (7 of 7 rows); clicking a row searches Eureka by that number.
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Browse MCP servers →What the data means for a filing strategy
With only 17 records and two named assignees, this is a landscape defined by a dominant filer and a narrow technical corridor rather than broad competitive crowding.
One filer sets the pace
The leading assignee alone is tied to 16 of the 17 records in scope, with the remaining record held by the second named assignee. There is no long tail of small entrants in this dataset — the field is effectively a two-party space.
Activity is concentrated, not steady
Filing built from a single record in 2017 to a peak of 9 in 2023 before falling off toward the 2026 cut-off. A four-year run of consistent data is not yet available, so no growth rate can be stated reliably.
Fuel cells paired with aircraft systems
H01M fuel-cell classifications and B64D aircraft-equipment classifications co-occur on more than half of all records, with F02C gas-turbine classifications present on 41.2%. This points to hybrid propulsion architectures rather than fuel-cell chemistry filed in isolation.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to hydrogen-based synthetic fuels patent landscape, with the prior art for and against each one.
Who is filing, and where the gate sits
Two assignees cover the entire ranked field, and both show zero filings in the latest year — consistent with the publication lag rather than a withdrawal from the space.
GKN Aerospace Services
Tied to 16 of the 17 records in this dataset, GKN Aerospace Services drives the aircraft-propulsion and fuel-cell hybrid architecture that defines the classification mix, including the representative filing on selectively combining fuel-cell and gas-turbine power.
Hydrogen Gentech
Holds the single record not attributed to the leading assignee. With only one filing, its technical focus within this dataset cannot be generalised beyond that record.
No long tail present
This is the complete assignee ranking the data returns for this search — not a top-50 or top-100 cut. A field this concentrated leaves little room for a third entrant to claim ground without engineering around the leader's architecture.
| Assignee | Recent year | YoY |
|---|---|---|
| GKN Aerospace Services Limited | 0 | — |
| HYDROGEN GENTECH PTE LTD | 0 | — |
Where to take this analysis
The raw counts tell you concentration and timing; the next step is testing specific claim language against the leader's filings and against the thinner branches identified above.
Map the leader's claim boundaries
Run the leader's granted claims against your own architecture before committing engineering time to a fuel-cell-plus-turbine hybrid design.
Explore claims in EurekaTest white-space branches for prior art
Check hydrogen carrier storage and electrolyzer thermal management for existing filings before drafting a first claim in either area.
Run a white-space search in EurekaTrack the next filing wave
Because publication lags filing by around 18 months, set an alert rather than relying on the apparent 2026 drop-off as a signal that activity has stopped.
Set up monitoring in EurekaCommon questions about this landscape
Within this dataset of 17 published records, one assignee — GKN Aerospace Services — is tied to 16 of them, making it the dominant filer by a wide margin. The second named assignee, Hydrogen Gentech, holds the single remaining record. This is a two-party field rather than one with a broad competitive spread, so any new entrant is effectively filing against one incumbent's architecture.
Filing activity rose from a single record in 2017 to a peak of 9 records in 2023, then declined toward the 2026 cut-off. That apparent decline should be read cautiously: publication typically lags actual filing by around 18 months, so recent years are understated in any patent dataset, including this one. There is not yet a clean four-year run of complete data to state a reliable growth rate.
H01M (batteries, cells and fuel cells) and B64D (aircraft equipment) are the two most common classifications, appearing on 58.8% and 52.9% of the 17 records respectively, with F02C (gas-turbine plants) close behind at 41.2%. The overlap between these categories indicates that most filings describe hybrid systems combining fuel cells with turbine or aircraft propulsion hardware, rather than fuel-cell chemistry alone. Because records can carry multiple IPC classes, these shares add up to more than 100%.
Relative to the dense fuel-cell-plus-turbine cluster, branches like hydrogen carrier storage tuned for aviation use, electrolyzer stack thermal management, and gas purity control at altitude appear thin in this dataset. A first claim in one of these areas would need to specify the operating parameter — for instance, a carrier storage system rated for a defined altitude and temperature range — rather than restating the general fuel-cell architecture the leader already covers. Given how concentrated this field is, testing these branches for existing prior art before drafting is worthwhile.
This filing, from GKN Aerospace Services, claims a propulsion system that selectively combines a fuel-cell arrangement with a gas generator built from a compressor, combustor and turbine, drawing on separate hydrogen and oxygen sources. It blocks designs where a gas-turbine path is used selectively alongside a fuel-cell path for additional propulsion within a single aircraft system. Anyone designing a similar dual-path hybrid propulsion system should check this filing's exact claim scope before finalising an architecture that layers combustion-driven power onto fuel-cell-driven power in the same aircraft.
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Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.