Hydrogen Use in Industry Patents: Leaders, Trends & White Space 2026
- 79.7% of all 59 records in scope sit with just five assignees — this is a field with a narrow set of gatekeepers, not a crowded open market.
- Filings jumped +300% from 2021 to 2024, the fastest complete-year climb in the dataset, right as the top-cited pyrolysis and low-temperature hydrogen patents were aging out of their enforcement window.
- C01B covers 78.0% of records while branches like C12N (8.5%) and C08J (6.8%) carry a fraction of the filing density — a visible gap between core chemistry and adjacent biological or polymer routes.
Filing growth compares 2021 (1 records) with 2024 (4) — 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 59 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This landscape tracks patent activity at the intersection of industrial hydrogen use and the production routes that feed it — pyrolysis of hydrocarbons, low-temperature catalytic methods, gasification, and biomass or fermentation-based generation. The search combines industrial-use language with production and handling terms such as hydrogen pressure, gas purity, electrode catalyst, and pressure vessel, capturing both the chemistry of making hydrogen and the engineering of moving it into industrial process heat.
Fifty-nine records sit in scope, spanning filings from 2015 through the current data cut-off. Because publication trails filing by roughly eighteen months, the most recent one to two years understate real filing activity — the trend should be read through 2024 as the last complete year.
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Filing trend and technology composition
Two views of the same 59 records: how filing activity has moved year on year, and which IPC subclasses carry the claim density.
Filing trend, 2017–2026
Filings ran from 10 in 2017 to a peak of 11 in 2019, before falling to a low base and then climbing +300% from 2021 (1) to 2024 (4) — the last year the dataset can treat as complete. 2025 and 2026 show near-zero counts, which reflects publication lag rather than a real drop in filing.
Technology composition by IPC subclass
C01B (non-metallic elements and inorganic compounds) touches 78.0% of the 59 records, confirming that most activity is anchored in core hydrogen chemistry. B01J (catalysis, 32.2%) and C10J (gasification, 20.3%) form a second tier, while C12M, C12P, C12N and C08J each sit under 12% — bioreactor, fermentation, microbial and polymer-processing routes that touch the topic only at its edges.
Shares are the percentage of the 59 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Hydrogen Use in Industry Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about hydrogen use in industry patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records in this landscape
Low temperature methods for hydrogen production (US20050271579A1)
Methods for the production of hydrogen comprise heating a hydrogen-bearing feed material capable of undergoing a hydrogenation reaction in the presence of a hydrogen donor material, a catalyst promoting catalytic transfer hydrogenation, and a base at a temperature of from about 150°C to about 450°C for a time sufficient to hydrogenate the feed material and to dehydrogenate the hydrogenated feed material to produce hydrogen and carbon, and collecting the resulting hydrogen.Filed by the Rogers Family Revocable Living Trust, 2005-12-08 — the second most-cited record in this landscape.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20040265223A1 | Method and device for the producing of a gas rich in hydrogen by thermal pyrolysis of hydrocarbons | 29 |
| 2 | US20050271579A1 | Low temperature methods for hydrogen production | 27 |
| 3 | US7537623B2 | Method and device for the producing of a gas rich in hydrogen by thermal pyrolysis of hydrocarbons | 16 |
| 4 | CN113122336A | 一种生物质热转化制氢方法及系统 | 14 |
| 5 | US20130224105A1 | Semiconductor photocatalyst for the photocatalytic reforming of biomass derivatives for hydrogen generation, … | 14 |
| 6 | US7520909B2 | Low temperature methods for hydrogen production | 14 |
| 7 | WO2018104712A1 | Process for producing hydrogen | 9 |
| 8 | US20210214517A1 | process | 6 |
| 9 | WO2019234408A1 | process | 5 |
| 10 | WO2021014111A1 | process | 3 |
Citation counts reflect influence within the searched corpus and skew toward older filings — a high count marks a document other applicants had to design around, not a currently dominant claim.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the data means for a filing decision
Three patterns worth acting on before drafting a new application in this space.
A narrow set of gatekeepers
Five assignees hold 47 of the 59 records in scope. That is not a fragmented field with room to enter unnoticed — a new filer's claims will likely sit close to an existing holder's prior art, especially in pyrolysis and low-temperature production routes.
Growth is real but recent
The climb from 1 filing in 2021 to 4 in 2024 is the sharpest sustained move in the trend. Because 2025 and 2026 are still filling in under publication lag, this is the most reliable growth signal the dataset currently supports.
Core chemistry dominates
Most claim activity sits inside non-metallic elements and inorganic compounds (C01B), with catalysis (B01J) and gasification (C10J) as secondary clusters. Branches like microbial or polymer-based hydrogen routes remain thin by comparison.
Old pyrolysis claims still cast a shadow
The most-cited record in this landscape covers thermal pyrolysis of hydrocarbons for hydrogen-rich gas, filed years ago yet still the most-referenced document in the set. New filings touching pyrolysis routes should check clearance against it before drafting.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to hydrogen use in industry patent landscape, with the prior art for and against each one.
Who holds the claim space
The ranked leaders in this dataset cover 18 companies total, counted in records — this is the whole ranking the data endpoint returns, not a top-50 or top-100 cut.
One filer well ahead of the rest
The leading assignee holds 20 of the 59 records in scope, more than triple the fifth-place count of 6. That gap is the clearest single fact in the ranking: this is a field with one dominant filer and a long tail behind it.
A thin second tier
Places two through five each hold single-digit record counts, together making up most of the remaining top-5 share of 47 records (79.7% of all 59). Below that, filing counts drop sharply toward the tenth-place holder at 1 record.
Almost everything sits in ten hands
The top 10 assignees combined account for 57 of 59 records, or 96.6% of the field. Entrants outside that group have filed only a handful of documents each, which signals either recent entry or a narrow, defensive filing strategy.
| Assignee | Recent year | YoY |
|---|---|---|
| Oxford University Innovation Ltd | 0 | — |
| LanzaTech Inc | 0 | — |
| Saudi Arabian Oil Co (Saudi Aramco) | 0 | — |
| ROGERS CHARLES J | 0 | — |
| Technical Institute of Physics and Chemistry, Chinese Academy of Sciences | 0 | — |
| Aramco Services Co | 0 | — |
| WU LIZHU | 0 | — |
| UAB INOVATAS | 0 | — |
Where to take this analysis
The dataset points to specific next steps depending on whether the goal is clearance, whitespace filing, or licensing strategy.
Run a clearance check against the top-cited pyrolysis claims
Before drafting around thermal pyrolysis or low-temperature hydrogen production, check the highest-cited records in this set directly rather than relying on the summary table alone.
Explore citing and cited records in EurekaMap the under-claimed branches to a first draft claim
C12N, C12P, C12M and C08J each carry under 12% of records — enough headroom to draft a narrow, defensible claim if the underlying chemistry is genuinely differentiated.
Draft claim language in EurekaTrack the leading assignee's recent filings
With one assignee holding 20 of 59 records, understanding their most recent activity — even where recent-year counts read as zero under publication lag — matters more than watching the long tail.
Set up assignee monitoring in EurekaCommon questions on hydrogen-in-industry patents
The ranking in this dataset covers 18 companies, with one assignee holding 20 of the 59 records in scope — well ahead of the fifth-place holder at 6 records. The top five assignees combined account for 79.7% of all records, so filing activity is concentrated rather than spread evenly. Anyone assessing freedom to operate should start with that leading filer's portfolio before looking at the long tail, since the gap between first and fifth place is the dominant structural feature of this field.
Filings grew +300% from 2021 (1 record) to 2024 (4 records), which is the fastest sustained climb in the dataset and the last span that can be treated as a complete-year comparison. Counts for 2025 and 2026 appear low, but that reflects publication lag of roughly eighteen months rather than an actual slowdown — those years are still filling in. Based on the complete-year data through 2024, the trend reads as growing, not slowing.
C01B, covering non-metallic elements and inorganic compounds, appears in 78.0% of the 59 records in scope, making it the dominant classification by a wide margin. Catalysis-related B01J follows at 32.2% and gasification-focused C10J at 20.3%, forming a clear second tier. Branches such as C12N, C12P, C12M and C08J each sit under 12%, meaning most patent activity is anchored in core inorganic chemistry rather than biological or polymer-based approaches.
US20050271579A1 claims methods for producing hydrogen by heating a hydrogen-bearing feed material with a hydrogen donor, a catalytic transfer hydrogenation catalyst, and a base at roughly 150 to 450 degrees Celsius, then collecting the hydrogen released. It is the second most-cited record in this landscape, filed by the Rogers Family Revocable Living Trust. Anyone working on low-temperature catalytic hydrogen production routes in that temperature band should review its claim scope directly rather than assume it is narrow, since its citation count suggests other applicants have already had to design around it.
The clearest gaps sit in branches with filing shares well below the C01B core: microbial and genetic-engineering routes (C12N, 8.5% of records), fermentation-based synthesis (C12P, 11.9%), bioreactor apparatus (C12M, 11.9%), and polymer processing tied to hydrogen handling (C08J, 6.8%). These are not untouched, but their filing density is a fraction of the inorganic chemistry core, which suggests room for a narrowly drafted claim if the underlying biological or materials approach is genuinely novel. High density in C01B does not mean that space is unavailable, only that it is more heavily prior-arted.
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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.