Hydrogen Energy Technology Patent Landscape 2026
Hydrogen Energy Technology Patent Landscape in 2026
The hydrogen energy IP field is in an active growth phase, with annual filings rising sharply since 2019 and the corpus reaching 4,843 patent families — still expanding on a multi-year basis with recent years understated by publication lag. The United States is the dominant filing jurisdiction and Nuvera Fuel Cells leads by family count, but challenger momentum from new entrants signals a rapidly broadening competitive field.
Nuvera Fuel Cells leads a moderately concentrated field with active new-entrant pressure
Nuvera Fuel Cells LLC holds the top position with 242 patent families, followed closely by Air Products & Chemicals with 222. The top five filers collectively account for 25% of the hundred largest filers’ combined total — a moderate concentration that leaves significant room for challengers.
A clear tier gap separates the top two applicants from the next cluster. Utility Global (128 families), The Morgan Crucible Co (85), and Electric Hydrogen Co (82) form a second tier, while a long tail of specialists and universities occupies ranks six through twenty. This structure means no single actor has locked up the field.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Nuvera Fuel Cells LLC | 242 | |
| 2 | AIR PROD & CHEM INC | 222 | |
| 3 | Utility Global Inc | 128 | |
| 4 | The Morgan Crucible Co PLC | 85 | |
| 5 | Electric Hydrogen Co | 82 | |
| 6 | British Petroleum Co PLC | 77 | |
| 7 | Johnson Matthey PLC | 73 | |
| 8 | SIEMENS ENERGY GLOBAL GMBH & CO KG | 62 | |
| 9 | Koloma Inc | 61 | |
| 10 | University of Southern California | 57 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 11 | Casale SA | 56 | |
| 12 | Energy Conversion Devices Inc | 52 | |
| 13 | Nuovo Pignone Tech SRL | 50 | |
| 14 | UOP LLC | 49 | |
| 15 | Evonik Operations GmbH | 49 | |
| 16 | Centre National de la Recherche Scientifique (CNRS) | 39 | |
| 17 | Saudi Arabian Oil Company (Saudi Aramco) | 38 | |
| 18 | Key DH IP Inc | 36 | |
| 19 | Infinium Technology LLC | 36 | |
| 20 | Oxford University Innovation Ltd | 35 |
The leaders’ positions span fuel-cell stack engineering, electrolytic hydrogen production, and hydrogen generation chemistry — meaning the top applicants are not competing on identical technical ground. Entrants with differentiated approaches in adjacent branches retain viable paths to defensible positions.
The most recent 18–24 months of filing data are under-represented due to patent publication lag; apparent softening in 2025–2026 figures should not be read as a real decline in activity. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filings surged from 2019 onward; electrolytic production and inorganic chemistry dominate the technology mix
Two charts together reveal both the pace of investment and where that investment is concentrated: the annual trend shows a field that accelerated sharply after 2019, while the IPC composition shows electrolytic and inorganic-chemistry branches absorbing the bulk of filing activity.
Annual filing trend
Filing volume was modest through 2018, then accelerated steeply from 2019 onward, reaching a recorded peak in 2023. The field is still expanding on a multi-year basis, and the 273% recent-window growth figure reflects genuine structural investment rather than a transient spike. Data for 2025 and 2026 are materially under-counted owing to publication lag and should not be interpreted as a plateau.
↗ Hover for values · click a bar to ask EurekaTechnology composition
Electrolytic production of compounds (C25B) and non-metallic elements and inorganic compounds (C01B) together account for the two largest IPC branches, reflecting a field heavily weighted toward green hydrogen production via electrolysis and reforming pathways. Batteries, cells and fuel cells (H01M) rank third, while catalysis (B01J), separation processes (B01D), and acyclic compounds (C07C) form a secondary cluster with meaningful but lower share.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Clean energy convergence center using blue and gre…
The present invention relates to a clean energy convergence center using blue and green hydrogen. According to an embodiment of the present invention, the clean energy convergence center comprises: a clean hydrogen production base for producing blue and green hydrogen through the capture, storage, and recycling of carbon dioxide generated during methane… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Maritime power plant system with processes for pro… | 360 |
| 2 | Removing carbon dioxide from waste streams through… | 184 |
| 3 | Electrolysis of carbon dioxide in aqueous media to… | 169 |
| 4 | Integrated photovoltaic-electrolysis cell | 161 |
| 5 | Method and apparatus for treating a sour gas | 156 |
| 6 | Method and apparatus for hydrogen generation | 156 |
| 7 | Separation of a sour syngas stream | 150 |
| 8 | Electrolysis of carbon dioxide in aqueous media to… | 150 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the competitive structure means for R&D investment decisions
Four structural observations — maturity, concentration, collaboration, and geography — translate the raw filing data into strategic signals for engineers and R&D planners.
Growth stage: rapid expansion still under way
The lifecycle evidence classifies this field as Growth, with annual filings still rising and the most recent years understated by publication lag. A 273% recent-window growth rate confirms that the technology is past its embryonic phase but well short of saturation. Early movers still have time to build defensible positions, but the window for foundational claims is narrowing.
Growth stageModerate concentration with an open second tier
The top five filers hold 25% of the hundred largest filers’ combined total — concentrated enough that the leading positions matter, but dispersed enough that challengers in the second and third tiers face no insurmountable barrier. The presence of several new entrants with strong recent momentum (Electric Hydrogen Co, Koloma Inc, Siemens Energy) indicates the ranking is not yet locked in.
Moderate HHILimited but notable cross-sector co-filing
The most active co-filing pair is BP and its Chinese affiliate BP (China) Investment, with 7 joint families, suggesting intra-group portfolio coordination rather than arm’s-length collaboration. Air Products & Chemicals and Millennium Cells have 5 joint families, as do Energy Conversion Devices and Shell International Research. Johnson Matthey and the University of Leicester have 1 joint family, pointing to an industry-academic tie in catalyst research. Broader ecosystem collaboration remains sparse relative to the scale of the field.
Sparse co-filingUS-anchored with strong PCT and EPO coverage
The United States leads all filing jurisdictions by a wide margin, with WIPO (PCT) and the European Patent Office forming the second tier of coverage. China and India both show substantial presence, reflecting either local filing strategies or designated-state coverage through PCT routes. South Korea and Japan appear at notably lower levels relative to their global hydrogen program investments, which may indicate that the dominant applicants in this corpus are weighted toward Western IP strategies.
US-led, global reachGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| BP PLC (British Petroleum) | BP (China) Investment Co Ltd | 7 |
| Air Products and Chemicals Inc | Millennium Cell Inc | 5 |
| Energy Conversion Devices Inc | Shell International Research Maatschappij BV | 5 |
| Johnson Matthey PLC | University of Leicester | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Nuvera and Air Products lead on volume; new entrants are closing fast on focused electrolysis bets
The top two applicants have built their positions through distinct technical emphases — Nuvera through fuel-cell stack engineering, Air Products through hydrogen generation and gas separation chemistry — while a cohort of new entrants is converging specifically on electrolytic production.
Nuvera Fuel Cells LLC
Nuvera holds the top position with 242 patent families, concentrated in fuel-cell stack technology (H01M 8), electrolytic cell design (C25B 9), and electrolytic hydrogen production (C25B 1). However, momentum has sharply reversed: recent filings show a decline of 97% versus the prior period, suggesting the portfolio has matured or that the organization has shifted strategic focus. Engineers entering fuel-cell stack engineering will need to design around this dense, established portfolio.
families: 242Utility Global Inc
Utility Global ranks third overall with 128 patent families and is growing at 170% versus the prior period — the fastest trajectory among established ranked players. Its focus is tightly concentrated on electrolytic production of compounds across C25B 1, C25B 9, and C25B 11, signaling a deliberate bet on electrolyzer technology. This combination of rapid growth and technical focus makes Utility Global the most credible near-term challenger to displace incumbent leaders in the electrolysis sub-segment.
families: 128| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Nuvera Fuel Cells LLC | 2 | ▼ -97% |
| Air Products and Chemicals Inc | 98 | ▲ +44% |
| Utility Global Inc | 89 | ▲ +170% |
| Electric Hydrogen Co | 70 | ▲ new entrant |
| BP PLC (British Petroleum) | 49 | ▲ new entrant |
| Johnson Matthey PLC | 42 | ▲ new entrant |
| Siemens Energy Global GmbH & Co KG | 48 | ▲ new entrant |
| Koloma Inc | 54 | ▲ new entrant |
Under-served adjacent branches worth monitoring in hydrogen energy IP
Several IPC branches sit adjacent to the dominant electrolysis and inorganic-chemistry core but carry lower filing share relative to their technical relevance to hydrogen systems. These are observations of relative sparsity; they warrant further diligence before treating them as confirmed entry opportunities.
H02J · Power supply and grid systems
This branch — covering grid integration, power electronics, and energy management systems — holds a 2% share in the current corpus despite being a critical enabler of green hydrogen production at scale (electrolyzer load-following, renewable coupling, and grid balancing). The sparse filing density relative to C25B and C01B suggests that power-systems integration for hydrogen has not yet attracted deep IP investment from hydrogen specialists, while power-electronics firms may not be filing under hydrogen contexts. An entrant with expertise in variable-load electrolyzer control or grid-connected hydrogen systems could find this branch under-defended.
Search this in Eureka →C02F · Water and wastewater treatment
Water treatment accounts for a 2% share of the IPC corpus despite water being the direct feedstock and primary consumable for electrolytic green hydrogen. Purification requirements for electrolyzer feed water (ultra-pure water, ion removal, membrane compatibility) represent a technically distinct challenge from bulk industrial water treatment. The low filing share in C02F relative to C25B suggests this enabling sub-system is an adjacent branch where focused IP work — particularly on feedwater quality management integrated with electrolyzer stacks — remains sparse.
Search this in Eureka →How leading applicants differ across technology routes
Strength of each leader across the main technology routes.
| Player | C25B 1 · Electrolytic production of compounds | C01B 3 · Non-metallic elements & inorganic compounds | C25B 9 · Electrolytic production of compounds | H01M 8 · Batteries, cells & fuel cells | C25B 15 · Electrolytic production of compounds |
|---|---|---|---|---|---|
| Nuvera Fuel Cells LLC | Moderate · 71 | Moderate · 50 | Strong · 133 | Strong · 209 | Moderate · 42 |
| Air Products and Chemicals Inc | Moderate · 53 | Strong · 162 | Absent | Absent | Emerging · 32 |
| Utility Global Inc | Strong · 109 | Absent | Strong · 84 | Absent | Moderate · 42 |
| The Morgan Crucible Co PLC | Absent | Absent | Strong · 52 | Strong · 82 | Strong · 45 |
| Electric Hydrogen Co | Strong · 46 | Absent | Strong · 42 | Strong · 35 | Strong · 32 |
| Energy Conversion Devices Inc | Absent | Strong · 66 | Absent | Strong · 65 | Absent |
Frequently asked questions
Among the top 100 filers, Nuvera Fuel Cells LLC leads with 242 patent families, followed by Air Products & Chemicals with 222. However, Nuvera’s recent filing rate has dropped sharply, while challengers such as Utility Global (128 families, +170% momentum) and new entrants including Electric Hydrogen Co and Koloma Inc are growing rapidly.
Yes. The lifecycle evidence classifies the field as Growth, supported by a 273% increase in recent-window filings. Annual volume peaked in the recorded data at 2023; figures for 2025 and 2026 are materially under-counted due to patent publication lag and should not be read as evidence of a slowdown.
Electrolytic production of compounds (C25B) and non-metallic elements and inorganic compounds (C01B) are the two largest branches by patent-record count, reflecting the field’s heavy investment in green hydrogen via electrolysis and in hydrogen generation chemistry. Batteries, cells and fuel cells (H01M) rank third.
The United States is the leading filing jurisdiction, followed by WIPO (PCT) and Europe (EPO). China and India both show substantial presence. South Korea and Japan appear at lower levels in this corpus, which may reflect the geographic weighting of the dominant applicants toward Western IP strategies.
Among tracked applicants, Utility Global shows the strongest established-player growth at +170% versus the prior period. Electric Hydrogen Co, British Petroleum, Johnson Matthey, Siemens Energy, and Koloma Inc are all classified as new entrants with rapidly expanding recent portfolios. Air Products & Chemicals shows solid +44% growth from an already large base.
Two branches with relatively low filing share despite high technical relevance are H02J (power supply and grid systems, covering electrolyzer grid integration) and C02F (water and wastewater treatment, covering feedwater purification for electrolyzers). Both sit adjacent to the dominant C25B electrolysis core but carry only 2% share each in the current corpus, indicating they have not yet attracted concentrated IP investment from hydrogen specialists.
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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.
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