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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/hydrogen-storage-patent-landscape-patent-landscape/ · Patsnap · data cut-off 2026-08-31 · downloaded from the live page
Patent Landscape · Hydrogen StorageHydrogen Storage Patents: Filing Trends, Leading Assignees and White Space
- Filing is concentrated but not locked up: the top 5 assignees hold just 8.5% of all 16,954 records in scope, and the top 10 hold 14.9% — a long tail does most of the filing.
- Pressure vessel and alloy claims trail the fuel-cell core: F17C gas-storage classes sit at 17.2% of records and C22C alloys at 7.6%, well behind H01M fuel cells at 32.1%.
- Filing activity has eased from its 2022 peak of 1,171: the 2021→2024 span shows a -18% change, though 2025-26 figures are still filling in as publication catches up with filing.
17K
Published Records
9%
Top-5 Share of All Records
-18%
Filing Growth 2021→2024
US
Leading Jurisdiction
Filing growth compares 2021 (884 records) with 2024 (727) — 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 16,954 records in scope (CR5), not by the ranked leaders only.
Published byPatsnap Research··7 min readSourced from Patsnap Eureka
Overview
What this landscape covers
This landscape tracks 16,954 published records filed against hydrogen storage, containment and carrier claims, cross-referenced against hydrogen pressure, gas purity, electrode catalyst, stack temperature and fuel-processing terms. It spans filings from 2015 through the 2026 data cut-off, giving a view of how storage and delivery claims have layered onto the broader fuel-cell and gas-handling art.
Coverage runs across the major receiving offices — the United States, Europe, WIPO's PCT route, Japan, China and Canada — so the picture includes both national-phase filings and the international applications still working through examination.
Filing volume and technology composition, 2015-2026
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on Hydrogen Storage 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
The data
Filing trend and technology composition
Two views of the same 16,954 records: how filing volume has moved year over year, and how records split across the IPC subclasses that carry hydrogen storage claims.
Filing trend, 2017-2026
Annual filings climbed from 308 in 2017 to a peak of 1,171 in 2022, then eased to 727 by 2024 — a -18% change from 2021's 884. Because publication lags filing by roughly 18 months, the 2025 and 2026 counts (down to 71 for the partial latest year) are still filling in and should not be read as a fresh drop-off.
Technology composition by IPC subclass
H01M (batteries, cells & fuel cells) and C01B (non-metallic elements & inorganic compounds) each cover roughly a third of records, at 32.1% and 31.2% respectively. F17C pressure-vessel and gas-storage claims sit at 17.2%, B01J catalysis at 12.9%, C25B electrolytic production at 8.5%, C22C alloys at 7.6%, B01D separation at 5.7% and B60L electric-vehicle propulsion at 3.1%. Because a single record can carry several classes, these shares sum to well over 100% of the 16,954-record total.
Shares are the percentage of the 16,954 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 Storage 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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A representative recent filing
Representative filing
Fluid hydrogen carrier and integrated charge-discharge / power-generation system
ARM TECHNOLOGIES CO., LTD.
The fluid hydrogen carrier of this disclosure contains a hydrogen storage alloy and an alkaline electrolyte.Filed by ARM Technologies Co., Ltd. and published 2026-01-22, this application bundles a fluid carrier composition with the hardware to charge, discharge and generate power from it — a claim shape that reaches across several of the IPC subclasses tracked in this landscape.
Most-cited records in this landscape
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20190339688A1 | Methods and systems for data collection, learning, and streaming of machine signals for analytics and mainten… | 974 |
| 2 | US20200348662A1 | Platform for facilitating development of intelligence in an industrial internet of things system | 733 |
| 3 | US20210157312A1 | Intelligent vibration digital twin systems and methods for industrial environments | 716 |
| 4 | US20180284758A1 | Methods and systems for industrial internet of things data collection for equipment analysis in an upstream o… | 600 |
| 5 | US20090304558A1 | Apparatus, system, and method for generating a gas from solid reactant pouches | 564 |
| 6 | US20200225655A1 | Methods, systems, kits and apparatuses for monitoring and managing industrial settings in an industrial inter… | 563 |
| 7 | US20200103894A1 | Methods and systems for data collection, learning, and streaming of machine signals for computerized maintena… | 514 |
| 8 | US20190033845A1 | Methods and systems for detection in an industrial internet of things data collection environment with freque… | 412 |
| 9 | WO2020003000A1 | Cyclic deposition methods for forming metal-containing material and films and structures including the metal-… | 391 |
| 10 | WO2019028269A2 | Methods and systems for detection in an industrial internet of things data collection environment with large … | 391 |
Citation counts favour older, well-searched records inside this corpus — read them as a signal of influence within the field, not as a ranking of current technical importance.
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 Storage 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 filing strategy
Three read-throughs from the trend, the class composition and the assignee concentration figures above.
Concentration
8.5% / 14.9%
top 5 / top 10 share of 16,954 records
No single filer owns the field
The leader holds 324 records and the top 10 combined hold 2,523 — 14.9% of all records in scope. That leaves the large majority of filing activity spread across a long tail of single- and few-filing entrants, which matters for anyone assuming a handful of majors already cover the core claim space.
Ranked leaders, 100-company ranking
Technology skew
32.1% vs 7.6%
H01M share vs C22C alloy share
Storage hardware trails the fuel-cell core
H01M fuel-cell and battery claims cover nearly a third of records, but the alloy science (C22C, 7.6%) and separation processes (B01D, 5.7%) that determine how hydrogen is actually held and purified are comparatively thin. That gap is where hardware-focused filers have more room to establish position.
IPC subclass shares, 16,954-record base
Momentum
-18%
filings, 2021 to 2024
Post-peak, not in decline
Filings peaked at 1,171 in 2022 and eased to 727 by 2024, an -18% move over that span. Given the 18-month publication lag, the 2025-26 figures are not yet a reliable read on whether that cooling has continued.
Complete-year filing counts
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 storage 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 Storage 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 where the gaps sit
The ranked leaders span the automotive OEM side, industrial gas majors and specialist storage-system firms — but concentration at the top is modest, and momentum data shows some of last year's active filers going quiet.
Leader
324
records, single leading assignee
Industrial gas and automotive majors set the pace
The leading assignee's 324 records sit well ahead of fifth place at 267 and tenth place at 194 — a gradual taper rather than a cliff, consistent with a field where storage hardware and fuel-cell integration draw filers from several industries at once.
Assignee ranking, 100 companies
Long tail
85.1%
of records outside the top 10
Most of the field sits outside the ranked leaders
With the top 10 holding 14.9% of all 16,954 records, the remaining volume is distributed across the rest of the ranking and beyond it — a structure that rewards a freedom-to-operate search over assuming a short list of known players covers the space.
Top 10 combined vs all records in scope
Momentum shift
0 filings
latest year, several previously active filers
Some recent leaders have gone quiet
Multiple assignees that show meaningful historical volume report zero filings in the latest year, with year-on-year drops of -100% for some. One smaller filer bucks the trend with a +25% year-on-year increase off a low base, a reminder that momentum and historical volume are separate signals.
Recent-year momentum by assignee
Recent-year filing momentum by assignee
| Assignee | Recent year | YoY |
|---|---|---|
| Brilliant Light Power Inc. | 5 | +25% |
| IdaTech LLC | 0 | — |
| Air Products and Chemicals, Inc. | 0 | -100% |
| ESS Tech, Inc. | 0 | -100% |
| Panasonic Holdings Corporation | 0 | — |
| Strong Force IoT Portfolio 2016, LLC | 0 | -100% |
| Toyota Motor Corporation | 0 | -100% |
| Sanyo Electric Co., Ltd. | 0 | — |
Source: Patsnap Eureka. Assignee-level momentum. Derived from a Patsnap search on Hydrogen Storage 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 analysis
The figures above describe where filing has already happened. The next step is usually narrower: checking a specific claim shape or a specific competitor against the full record set.
Run a freedom-to-operate check
Pressure-vessel and alloy claims are less densely filed than the fuel-cell core, but density alone does not clear a specific design — a targeted search against the exact claim language is the next step.
Search this space in EurekaTrack a specific assignee's momentum
Several filers with substantial historical volume show zero activity in the latest year. Confirming whether that reflects a real pull-back or a publication-lag artefact takes a filer-level pull, not the aggregate trend.
Monitor assignees in EurekaSource: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on Hydrogen Storage 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 on the hydrogen storage patent landscape
No single company dominates the field. The leading assignee in this dataset holds 324 records, with the top 5 combined accounting for only 8.5% of all 16,954 records in scope and the top 10 accounting for 14.9%. The ranking includes a mix of industrial gas suppliers, automotive OEMs and specialist storage-system firms, and the taper from first to tenth place is gradual rather than a sharp cliff, so freedom-to-operate work should look well beyond the handful of best-known names.
Filing volume peaked in 2022 at 1,171 records and had eased to 727 by 2024, a -18% change over that three-year span. Because publication typically lags actual filing by around 18 months, the lower counts recorded for 2025 and 2026 are not yet a reliable signal of a continued slowdown — they will fill in as more applications publish. The honest read is that the field has cooled from its 2022 peak, not that it is currently in freefall.
Battery and fuel-cell claims under IPC class H01M cover 32.1% of the 16,954 records in scope, closely followed by non-metallic elements and inorganic compounds under C01B at 31.2%. Pressure-vessel and gas-storage hardware (F17C) accounts for 17.2%, with catalysis (B01J), electrolytic production (C25B), alloys (C22C), separation processes (B01D) and EV propulsion (B60L) each covering smaller shares. Because records often carry multiple IPC classes, these figures overlap rather than summing to a whole field.
Relative to the fuel-cell and inorganic-chemistry core, hardware-adjacent branches such as alloy composition (C22C, 7.6% of records), separation and purification processes (B01D, 5.7%) and EV-specific propulsion integration (B60L, 3.1%) carry noticeably lower filing density. That does not guarantee an open claim, but it does mark sub-areas — such as carrier alloy formulations, gas-purity monitoring and stack temperature management — where a full novelty search is more likely to turn up room than in the crowded fuel-cell classes.
US20260024787A1, filed by ARM Technologies and published January 2026, claims a fluid hydrogen carrier built from a hydrogen storage alloy combined with an alkaline electrolyte, along with the associated charging, discharging and power-generation hardware. Its scope extends across several integrated systems named in the filing rather than a single narrow composition. Anyone working on alkaline-electrolyte carrier fluids or the surrounding charge-discharge hardware should review its specific claim language directly, since the abstract alone does not establish claim boundaries.
Answers are grounded in the same dataset. Derived from a Patsnap search on Hydrogen Storage 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.