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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/hydrogen-and-fuel-cell-vehicles-patent-landscape-patent-landscape/ · Patsnap · data cut-off 2026-08-31 · downloaded from the live page
Patent Landscape · Hydrogen & Fuel-Cell VehiclesHydrogen and fuel-cell vehicle patents: who holds the claim space and where it opens up
- 45.8% concentration. The top five assignees account for 1,204 of the 2,628 records in scope — filing here is already dominated by a small group of automakers, not an open field.
- Filings kept climbing through 2024. The 2021→2024 span shows +15% growth, with 2023 the peak year on record at 224 filings; 2025 and beyond are still filling in as publication catches up with filing.
- H01M and B60L dominate the mix. Batteries and fuel cells sit on 32.9% of records and EV propulsion on 28.8%, while gas storage (F17C) and electrolytic production (C25B) each cover under 7% — the storage and production side is comparatively open.
2,628
Published Records
46%
Top-5 Share of All Records
+15%
Filing Growth 2021→2024
US
Leading Jurisdiction
Filing growth compares 2021 (188 records) with 2024 (217) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 2,628 records in scope (CR5), not by the ranked leaders only.
Published byPatsnap Research··7 min readSourced from Patsnap Eureka
Overview
What this patent landscape covers
This landscape draws on 2,628 published records filed between 2015 and the 2026 cut-off, spanning the core hardware and control logic of hydrogen and fuel-cell vehicles: stack design, hydrogen storage and delivery, electrode catalysts, and the vehicle-level control loops — speed, torque, temperature — that tie a fuel-cell stack to a drivetrain. The scope intentionally pulls in both the electrochemical side (catalyst, gas purity, stack temperature) and the vehicle-systems side (vehicle speed, traction torque), because the commercially contested claims increasingly sit at the boundary between the two.
Reading the numbers by patent family rather than raw publication count matters here: continuation practice and multi-jurisdiction filing by the largest automakers can inflate document counts without adding new invention. The assignee ranking below is already counted in families for that reason.
Filing activity and technology composition, 2015 – 2026
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on Hydrogen & Fuel-Cell Vehicles Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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The data
Filing trend and technology composition
Two views of the same 2,628-record set: how filing activity has moved year over year, and how records split across the IPC subclasses that define the technology.
Filing trend, 2017 – 2026
Filings ran from 143 in 2017 to a peak of 224 in 2023, with the 2021→2024 span showing +15% growth to 217. The 2025 and 2026 figures (down to 7 for the partial latest year) are not a slowdown signal — publication lags filing by roughly 18 months, so the most recent one to two years are always undercounted at the point of any given data cut.
Technology composition by IPC subclass
Batteries and fuel cells (H01M) and EV propulsion (B60L) each cover more than a quarter of all records, and hybrid/joint vehicle control (B60W) and vehicle propulsion/drive (B60K) sit close behind. Because a single record can carry several IPC classes, these shares add up to well over 100% of the 2,628 records — a record claiming a fuel-cell stack integrated with drivetrain control legitimately appears in more than one bucket.
Shares are the percentage of the 2,628 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Source: Patsnap Eureka. Filing trend and technology composition. Derived from a Patsnap search on Hydrogen & Fuel-Cell Vehicles Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.
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Representative and most-cited records
Representative record
US6122588A — Vehicle speed control with continuously variable braking torque
CONTINENTAL AUTOMOTIVE SYSTEMS, INC.
A system and method for reducing speed of a vehicle to maintain a target vehicle speed include determining an actual vehicle speed, comparing the target vehicle speed to the actual vehicle speed to generate a speed error, determining a continuously variable braking torque as a function of the speed error when the actual vehicle speed exceeds the target vehicle speed, and applying the continuously variable braking torque to at least one wheel of the vehicle to reduce the speed error toward zero and control the speed of the vehicle.The claim language explicitly extends to vehicles powered by an internal combustion engine, electric vehicles, fuel cell vehicles, and hybrid vehicles — it is a vehicle-speed-control patent, not a fuel-cell-specific one, which is exactly why it surfaces across this search.
Most-cited records in this landscape
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20160045841A1 | New and improved system for processing various chemicals and materials | 860 |
| 2 | US20070112475A1 | Power management systems and devices | 412 |
| 3 | US6348278B1 | Method and system for supplying hydrogen for use in fuel cells | 353 |
| 4 | US20070119718A1 | Optimizing photovoltaic-electrolyzer efficiency | 326 |
| 5 | US20110313647A1 | Power management systems and designs | 295 |
| 6 | US20050052080A1 | Adaptive electric car | 229 |
| 7 | WO2014153570A2 | New and improved system for processing various chemicals and materials | 219 |
| 8 | WO2007142693A2 | Optimizing photovoltaic-electrolyzer efficiency | 215 |
| 9 | US20040263099A1 | Electric propulsion system | 191 |
| 10 | US7169489B2 | Hydrogen storage, distribution, and recovery system | 183 |
Citation counts inside a searched corpus skew toward older filings, since they have had longer to accumulate citations — treat this table as a signal of historical influence, not of which claims matter most today.
Each row carries its publication number; clicking a row searches Eureka by that number.
Source: Patsnap Eureka. Citation counts and representative records. Derived from a Patsnap search on Hydrogen & Fuel-Cell Vehicles Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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What the numbers mean for a filing decision
Three read-throughs of the concentration, trend and citation data, aimed at where to file next rather than what already exists.
Concentration
45.8%
of 2,628 records held by the top 5 assignees
Filing is already concentrated at the top
Just five assignees hold 1,204 of the 2,628 records in scope, and the top ten extend that to 64.5%. A new entrant filing broad stack or propulsion-control claims is filing directly into occupied space; the more realistic opening is a narrower, component-level claim that the incumbents have not already blocked.
Source: assignee ranking, 2,628 records
Momentum
+15%
growth, 2021 to 2024 filings
Growth held through the last complete filing year
Filings rose from 188 in 2021 to 217 in 2024, and 2023 remains the peak year on record at 224. Because publication lags filing by around 18 months, the visibly lower 2025–2026 counts describe a reporting gap, not a cooling field.
Source: filing trend, 2017–2026
Composition
9.6%
of records in C01B, non-metallic elements & inorganic compounds
Storage and production chemistry trail the vehicle-systems classes
H01M and B60L between them touch well over half of all records, but C01B and C25B — the classes closest to hydrogen production and electrolysis chemistry — sit at 9.6% and 6.1% respectively. That gap is where component suppliers, rather than vehicle OEMs, still have room to build a defensible position.
Source: IPC composition, 2,628 records
Eureka AI Agent
Looking for what nobody has claimed yet?
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to hydrogen & fuel-cell vehicles patent landscape, with the prior art for and against each one.
Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on Hydrogen & Fuel-Cell Vehicles Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Players
Who is filing, and who has stopped
The leaderboard is dominated by a handful of automakers, but the most recent-year momentum figures show nearly all of them at zero new filings year over year — a pattern that says more about publication lag than about retreat from the technology.
Leader
500
records held by the top-ranked assignee
A single assignee leads by a wide margin
The top-ranked assignee holds 500 records against 151 at fifth place and 60 at tenth — a steep drop-off that marks this as a field led decisively by one filer rather than a tight cluster.
Source: assignee ranking
Co-filing
127
joint records, strongest co-assignee pair
Co-assignment is rare but concentrated
Only 10 co-assignee pairs appear across the dataset, and the strongest single pairing accounts for 127 joint records — a scale that points to a formal group or affiliate filing structure rather than incidental collaboration.
Source: co-assignee pairs
Momentum
-100%
YoY change, latest year, for several leading assignees
Recent-year momentum reads as a publication gap, not a pullback
Several of the largest historical filers show 0 records and -100% YoY in the latest year. Given the roughly 18-month lag between filing and publication, this reflects records not yet visible in the corpus rather than an actual halt in R&D activity.
Source: recent-year momentum by assignee
Recent-year filing momentum by assignee
| Assignee | Recent year | YoY |
|---|---|---|
| Toyota Motor Corporation | 0 | -100% |
| Hyundai Motor Company | 0 | -100% |
| Nissan Motor Co., Ltd. | 0 | — |
| Toyota Motor North America, Inc. | 0 | -100% |
| Honda Motor Co., Ltd. | 0 | -100% |
| Kia Corporation | 0 | -100% |
| GM Global Technology Operations LLC | 0 | — |
| Toyota Motor Engineering & Manufacturing North America, Inc. | 0 | -100% |
Source: Patsnap Eureka. Assignee-level momentum. Derived from a Patsnap search on Hydrogen & Fuel-Cell Vehicles Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
What's next
Where to take this
The dataset points to a field with a settled leadership tier and a set of narrower claim areas still open beneath it. The next steps depend on whether the goal is freedom-to-operate or a filing strategy.
Map the design-around space around the leading claims
Before filing near stack control or propulsion integration, check which specific claim elements the top assignees already hold and which component-level variations remain unclaimed.
Explore claims in Patsnap Eureka →Track the storage and production chemistry classes
C01B and C25B carry markedly fewer records than the vehicle-systems classes — worth monitoring as hydrogen production and storage chemistry mature separately from vehicle OEM filings.
Set up a monitoring search in Patsnap Eureka →Watch for the 2025–2026 filing catch-up
The apparent drop in the most recent years is a publication-lag artefact, not a real decline. Revisit the trend once those years complete to see whether +15% growth continues.
Run this landscape again in Patsnap Eureka →Source: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on Hydrogen & Fuel-Cell Vehicles Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
FAQ
Common questions about hydrogen and fuel-cell vehicle patents
Filing in this field is led decisively by one assignee, which holds 500 of the 2,628 records in scope — well ahead of the fifth-ranked assignee at 151 and tenth at 60. The top five assignees combined account for 45.8% of all records, and the top ten reach 64.5%. That concentration means most of the fundamental stack and propulsion-control claim space is already occupied by a small group of major automakers, so new entrants are generally better served targeting narrower, component-level claims than broad platform patents.
Yes, through the most recent complete filing year. Filings rose from 188 in 2021 to 217 in 2024, a +15% increase, with 2023 as the peak year on record at 224. The visibly lower counts for 2025 and 2026 reflect the roughly 18-month lag between filing and publication rather than an actual slowdown — those years will keep filling in as more records publish.
The largest concentrations sit in batteries and fuel cells (H01M, 32.9% of the 2,628 records) and electric vehicle propulsion (B60L, 28.8%), followed closely by vehicle propulsion/drive (B60K) and hybrid/joint vehicle control (B60W), each near 17-18%. Hydrogen-specific chemistry and storage classes — non-metallic elements and inorganic compounds (C01B), pressure vessels and gas storage (F17C), and electrolytic production (C25B) — each cover under 10% of records, marking them as comparatively less crowded than the vehicle-systems side.
The clearest gaps sit in the classes with the lowest record shares relative to the core vehicle-control classes: electrolytic hydrogen production (C25B, 6.1%), pressure vessel and gas storage systems (F17C, 6.2%), and the broader non-metallic/inorganic compound chemistry class (C01B, 9.6%). These sit closer to hydrogen production and storage engineering than to vehicle drivetrain control, which is where the largest automakers concentrate their filings — component and materials suppliers working in storage and production chemistry have comparatively more open claim space than a new entrant trying to file on stack or propulsion control.
No — the drop in 2025-2026 filing counts, and the near-universal -100% year-over-year figures shown for several leading assignees in the most recent year, are a publication-lag artefact rather than evidence of reduced R&D. Patent publication typically lags the actual filing date by around 18 months, so the most recent one to two years in any patent dataset are always undercounted at the time of any given data cut. The reliable trend read is the 2021-2024 span, which showed +15% growth and a peak filing year in 2023.
Answers are grounded in the same dataset. Derived from a Patsnap search on Hydrogen & Fuel-Cell Vehicles Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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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.