Hydrogen Storage Materials Patent Landscape 2026
Hydrogen Storage Materials Patent Landscape in 2026
The hydrogen storage materials field is in a Growth stage, with a 40% increase in recent filing activity and a dominant US jurisdiction presence; Energy Conversion Devices Inc holds a commanding lead with 236 patent records, nearly double the next-ranked applicant. The competitive field is moderately concentrated at the top, with a small number of established players anchoring foundational inorganic chemistry and electrochemical routes while new entrants signal expanding commercial interest.
Energy Conversion Devices leads a moderately concentrated field with a clear tier gap
Energy Conversion Devices Inc ranks first with 236 patent records, followed by Ovonic Battery Company Inc (140) and Brilliant Light Power Inc (116). The top five applicants collectively account for 24% of the combined total across the hundred largest filers, indicating a moderately concentrated competitive structure.
A meaningful tier gap separates the top three filers from the mid-tier: Nabors Energy Transition Solutions LLC (91 records) and Panasonic Holdings Corp (66 records) anchor a second tier, while GM Global Technology Operations LLC, Hydro Quebec Corp, and Intelligent Energy Ltd cluster closely in a third tier ranging from 61 to 63 records.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Energy Conversion Devices Inc | 236 | |
| 2 | Ovonic Battery Company Inc | 140 | |
| 3 | Brilliant Light Power Inc | 116 | |
| 4 | Nabors Energy Transition Solutions LLC | 91 | |
| 5 | Panasonic Holdings Corp | 66 | |
| 6 | GM Global Technology Operations LLC | 63 | |
| 7 | Hydro-Québec | 61 | |
| 8 | Intelligent Energy Ltd | 59 | |
| 9 | Intelligent Energy Inc | 49 | |
| 10 | USW Commercial Services Ltd | 45 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Toyota Motor Corporation | 45 | |
| 12 | Sekisui Chemical Co Ltd | 45 | |
| 13 | Texaco Development Corp | 41 | |
| 14 | Johnson Matthey PLC | 41 | |
| 15 | Vodik Labs LLC | 40 | |
| 16 | Savannah River Nuclear Solutions LLC | 39 | |
| 17 | Oxford University Innovation Ltd | 39 | |
| 18 | PPG Industries Ohio Inc | 37 | |
| 19 | Centre National de la Recherche Scientifique (CNRS) | 35 | |
| 20 | Sanyo Electric Co Ltd | 35 |
The sustained presence of Energy Conversion Devices Inc and its affiliate Ovonic Battery Company Inc at the top signals that foundational nickel-metal-hydride and solid-state alloy storage chemistry remains heavily staked; new entrants such as Nabors Energy Transition Solutions LLC and Vodik Labs LLC indicate that commercial hydrogen supply-chain applications are drawing fresh IP investment.
Patent records published within approximately the last 18 to 24 months are subject to publication lag and likely under-represent true filing activity in that window; counts for 2025 and 2026 should be treated as provisional.
Filing activity is in sustained growth; inorganic chemistry and electrochemistry dominate the technology mix
Two lenses illuminate how the field is evolving: the annual filing trend reveals the pace and direction of investment, while the IPC class composition shows which technical domains attract the most innovation effort.
Annual filing trend
Annual filings climbed steadily from 80 records in 2018 to a peak of 155 in 2023, reflecting a genuine growth trajectory consistent with the field’s Growth lifecycle stage. The apparent dips in 2024 (144) and 2025 (139) and the very low 2026 figure (10) are artifacts of publication lag and should not be read as real declines; the 40% recent growth figure confirms underlying momentum.
↗ Hover for values · click a bar to ask EurekaTechnology composition
C01B (non-metallic elements and inorganic compounds) is the dominant branch by a substantial margin, reflecting the centrality of hydrogen generation and storage chemistry. H01M (batteries, cells, and fuel cells) is the second largest branch, pointing to the close coupling of hydrogen storage with electrochemical energy systems. B01J (chemical and physical processes, catalysis), C22C (alloys), and F17C (pressure vessels and gas storage) form a meaningful secondary tier, capturing catalytic, metallurgical, and systems-level storage approaches.
↗ 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.
Energy storage and supply system and direct fuel c…
A direct Fuel Cell is based on organic liquid hydrogen storage materials, and includes a fuel cell unit connected to load through AC/DC convert circuit. The outlet and inlet of hydrogen storage materials on the fuel cell unit is connected to hydrogen storage tank through hydrogen storage output pipe and hydrogen storage input pipe, respectively. There is a… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Materials and products using nanostructured non-st… | 408 |
| 2 | Thermally exfoliated graphite oxide | 351 |
| 3 | System for operating solid oxide fuel cell generat… | 253 |
| 4 | Article comprising small diameter nanowires and me… | 249 |
| 5 | Mobile hydrogen generation and supply system | 246 |
| 6 | Nanotechnology for biomedical products | 240 |
| 7 | Electroactive material for secondary batteries and… | 214 |
| 8 | Mobile hydrogen generation and supply system | 206 |
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 and technology structure means for R&D investment decisions
The combination of a Growth lifecycle stage, moderate top-tier concentration, active cross-institutional collaboration, and broad global filing coverage shapes both the risk profile and the opportunity space for new entrants and incumbents alike.
Growth stage: momentum is real but publication lag obscures the true frontier
The field carries a Growth lifecycle designation, supported by a 40% recent filing growth rate. Annual volume climbed consistently to a 2023 peak of 155 records and has not yet shown a structural decline. Investors and R&D teams should expect the filing density around core inorganic chemistry and alloy storage to intensify further before the field matures.
Growth lifecycleTop five hold 24% of the largest-filer pool; room for challengers in adjacent routes
With the top five applicants accounting for 24% of the combined total across the hundred largest filers, the field is concentrated enough that incumbents set agenda-setting prior art, yet open enough that focused players in catalysis, powder metallurgy, or pressure-vessel integration can carve defensible positions. The tier gap between the top three and the mid-tier is substantial, reducing the risk of rapid displacement of leaders.
Moderate concentrationUSW Commercial Services and Hydro Quebec anchor the most active co-filing pair
The most frequent co-applicant pair is USW Commercial Services Ltd and Hydro Quebec Corp, with 28 jointly filed records, pointing to a durable research partnership bridging UK academic commercialization and Canadian utility R&D. The former Director-General of the Agency of Industrial Science and Technology (Japan) appears as a hub collaborator with multiple partners including the National Institute of Advanced Industrial Science and Technology, Kurimoto Ltd, and Sekisui Chemical, illustrating the importance of public-sector anchors in Japanese consortium activity. Energy Conversion Devices Inc co-filed with International Shell Research Ltd (5 records) and ANR Energy Conversion (4 records), reflecting early industry-to-industry technology transfer.
Cross-institutionalUS jurisdiction leads; Europe and China present meaningful secondary footprints
The United States is the primary filing jurisdiction with 1,232 patent records, followed by the EPO (648), China (507), WIPO/PCT (488), and Japan (356). Canada (244) and Australia (210) add material coverage, consistent with the strong presence of Hydro Quebec Corp and other North American players. The comparatively lower South Korea count (51) relative to its automotive hydrogen fuel-cell ambitions may indicate an under-represented market worth monitoring.
US-led, global spreadGo 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 |
|---|---|---|
| USW Commercial Services Ltd | Hydro Quebec Corp | 28 |
| Director-General of the Agency of Industrial Science and Technology (MITI Japan) | National Institute of Advanced Industrial Science and Technology (AIST) | 11 |
| Director-General of the Agency of Industrial Science and Technology (MITI Japan) | Kurimoto Ltd | 10 |
| Director-General of the Agency of Industrial Science and Technology (MITI Japan) | 高圧瓦斯工业株式会社 | 8 |
| Texaco Development Corp | Texaco Development Corp (Texaco Ovonic affiliate) | 8 |
| Energy Conversion Devices Inc | Shell International Research Maatschappij BV | 5 |
| Energy Conversion Devices Inc | ANR ENERGY CONVERSION | 4 |
| Director-General of the Agency of Industrial Science and Technology (MITI Japan) | 积水化学工业株式会社 | 4 |
| Director-General of the Agency of Industrial Science and Technology (MITI Japan) | Toyobo Co Ltd | 3 |
| Energy Conversion Devices Inc | Crucible Materials Corp | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Energy Conversion Devices anchors the field; Nabors Energy Transition Solutions is the standout new entrant
The two cards below profile the ranked leader and the most momentum-driven challenger. Both are characterized by heavy reliance on C01B inorganic chemistry, but with distinct secondary emphases that signal different end-use trajectories.
Energy Conversion Devices Inc
Energy Conversion Devices Inc leads the corpus with 236 patent records, concentrated in C01B non-metallic elements and inorganic compounds (273 sub-class records), H01M batteries and fuel cells (194), and H01M8 fuel-cell assemblies (170). Its affiliate Ovonic Battery Company Inc (140 records) reinforces the same electrochemical storage axis, suggesting a coordinated portfolio around nickel-metal-hydride and related alloy storage chemistries. No recent momentum data is available for the leader itself, underscoring its established rather than emergent position.
families: 236Nabors Energy Transition Solutions LLC
Nabors Energy Transition Solutions LLC ranks fourth with 91 patent records and carries a ‘new entrant’ momentum designation, meaning its entire recorded portfolio has appeared in the recent filing window with no comparable prior-period base. Its technical focus is tightly concentrated in C01B32 and C01B33 (non-metallic elements, including carbon-related and silicon-related compounds) and C09C1 (inorganic pigments and treatment), suggesting a materials-science approach to hydrogen storage that diverges from the dominant alloy and hydride routes of the top incumbents.
families: 91| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Brilliant Light Power Inc | 11 | ▼ -61% |
| Nabors Energy Transition Solutions LLC | 91 | ▲ new entrant |
| USW Commercial Services Ltd | 2 | ▲ new entrant |
Under-served adjacent branches in catalysis, alloys, pressure vessels, powder metallurgy, and electrolytic production
The whitespace analysis flags five IPC branches with lower relative share within the corpus despite clear technical relevance to hydrogen storage; two stand out for their combination of plausible entry paths and distinct technical value.
F17C · Pressure vessels & gas storage
F17C covers the containment and dispensing hardware that is inseparable from practical hydrogen storage deployment, yet it represents only 5% share among the identified adjacent branches. The branch sits at the intersection of materials science and mechanical engineering, meaning that teams with composite-materials or liner-coating expertise could enter without replicating the dominant C01B chemistry positions. The growing interest in onboard vehicle and stationary storage creates a realistic commercial entry path for specialized vessel-design IP.
Search this in Eureka →C25B · Electrolytic production of compounds
C25B, covering electrolytic processes for producing hydrogen and related compounds, holds only 2% share among the adjacent branches despite being mechanistically upstream of virtually all green hydrogen storage pathways. Its relative sparsity may reflect historical separation of electrolysis IP from storage IP, but integrated electrolyzer-storage system design is increasingly attractive as the hydrogen value chain tightens. Entrants with electrochemical engineering capabilities could build positions here that are complementary to rather than in direct conflict with the dominant H01M and C01B incumbents.
Search this in Eureka →How leading applicants differ by IPC technology route
Strength of each leader across the main technology routes.
| Player | C01B 3 · Non-metallic elements & inorganic compounds | H01M 8 · Batteries, cells & fuel cells | H01M 4 · Batteries, cells & fuel cells | F17C 11 · Pressure vessels & gas storage | C01B 6 · Non-metallic elements & inorganic compounds |
|---|---|---|---|---|---|
| Energy Conversion Devices Inc | Strong · 273 | Strong · 170 | Strong · 194 | Moderate · 105 | Emerging · 40 |
| Ovonic Battery Company Inc | Strong · 133 | Moderate · 39 | Strong · 134 | Absent | Absent |
| USW Commercial Services Ltd | Strong · 57 | Absent | Moderate · 14 | Absent | Strong · 54 |
| Panasonic Holdings Corp | Strong · 54 | Absent | Moderate · 26 | Moderate · 18 | Absent |
| Johnson Matthey PLC | Strong · 41 | Moderate · 17 | Strong · 29 | Absent | Absent |
| Director-General of the Agency of Industrial Science and Technology (MITI Japan) | Strong · 59 | Absent | Absent | Moderate · 24 | Absent |
| Texaco Development Corp | Strong · 45 | Strong · 31 | Absent | Absent | Absent |
Frequently asked questions
The analysis covers 1,085 patent families in scope globally. Patent record counts across jurisdictions and IPC classes can exceed this family total because a single family may be filed in multiple offices and assigned to multiple technology classes.
Energy Conversion Devices Inc leads with 236 patent records, nearly 70% more than the second-ranked Ovonic Battery Company Inc (140 records). Both organizations are closely affiliated and together represent a dominant position in nickel-metal-hydride and solid-state alloy storage chemistry.
The field is classified as Growth, supported by a 40% recent filing growth rate. Annual volume reached a recorded peak of 155 records in 2023. Apparent dips in 2024 and 2025 reflect publication lag rather than a genuine slowdown, and the 2026 figure (10 records) is highly provisional for the same reason.
The United States leads with 1,232 patent records, followed by the EPO (648), China (507), WIPO/PCT (488), and Japan (356). Canada (244) and Australia (210) also show material coverage. South Korea’s relatively low count (51) may warrant monitoring given its automotive hydrogen ambitions.
C01B (non-metallic elements and inorganic compounds) is the dominant branch by a wide margin, reflecting the centrality of hydrogen generation and hydride chemistry. H01M (batteries, cells, and fuel cells) is the second largest, followed by B01J (catalysis), C22C (alloys), and F17C (pressure vessels and gas storage).
Nabors Energy Transition Solutions LLC is designated a new entrant, meaning its 91 recorded patent records have all appeared in the recent filing window with no comparable prior-period base. USW Commercial Services Ltd is also designated a new entrant in the recent window, while Brilliant Light Power Inc shows a declining trend of -61% compared to its prior three-year period.
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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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