Electrochemical Synthesis Patents: Leaders, Trends & White Space 2026
- Filings plateaued after 2023. The trend peaked at 28 families in 2023 and has since flattened, with the 2022 midpoint of 22 showing growth was already levelling before that peak.
- One IPC subclass dominates the entire dataset. 178 of 179 families sit in C25B (electrolytic production of compounds), meaning nearly every filing shares the same core classification regardless of end product.
- The US leads receiving offices by a wide margin. 62 US filings compare with 36 in China and 27 at the EPO, pointing to where enforcement risk and prior art concentrate first.
Filing growth compares 2021 (18 records) with 2024 (19) — 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 179 records in scope (CR5), not by the ranked leaders only.
What the electrochemical synthesis patent record shows
Electrochemical synthesis covers processes that use an applied potential rather than a thermal or chemical driving force to build target molecules — organic carbonates, hydrogen peroxide, ammonia precursors, and increasingly CO2-derived multi-carbon products. The dataset behind this page pulls 179 patent families filed between 2015 and 2026 that combine faradaic efficiency, electrode material, cell design, overpotential or product selectivity language with core electrolytic-production IPC codes. Publication lags filing by roughly 18 months, so the 2026 count in the trend chart understates real filing activity for that year.
The classification profile is unusually narrow for a chemistry landscape: almost every record sits in C25B, with secondary activity in catalysis (B01J), battery and fuel-cell adjacent work (H01M), heterocyclic chemistry (C07D) and separation processes (B01D). That concentration means claim space inside core electrolytic cell and electrode configurations is well covered, while the smaller adjacent subclasses carry far less filing pressure per family.
Filing trend and technology composition
Two views of the same 179-family dataset: filing activity by year, and where those families sit across IPC subclasses.
Filings rose to a 2023 peak, then flattened
Annual counts climbed from 2 families in 2017 to a peak of 28 in 2023. The 2022 figure of 22 was already close to that peak, so the growth curve was flattening before the high point rather than accelerating into it. Treat 2025 and 2026 counts as provisional given publication lag.
C25B accounts for nearly the entire dataset
178 of 179 families carry a C25B code, the electrolytic-production classification at the heart of the search. B01J (catalysis, 22 families), H01M (batteries and fuel cells, 11) and C07D (heterocyclics, 8) are the largest secondary groupings, with C07C, B01D, C01C and C01G each in single digits.
Shares are the percentage of the 179 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Electrochemical Synthesis Processes with Eureka
This page is one run against one query. Ask Eureka your own question about electrochemical synthesis processes and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited records and a recent representative filing
WO2025245525A1 — Unlocking new reaction pathways for electrocatalytic conversion using plasma activation
A combined plasma-electrocatalysis CO2/CO conversion system delivers non-thermal plasma-activated CO2/CO to a gas diffusion electrode, enabling electrocatalytic conversion of reactive plasma species while avoiding quenching in the aqueous electrolyte. Co-feeding CO2 and CO suppresses O2 generation in the plasma step, which the filing reports increases C3+ productivity relative to electrocatalysis-only conversion of either gas alone.Filed by Yale University, published 2025-11-27.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US4609440A | Electrochemical synthesis of methane | 101 |
| 2 | US20030019758A1 | Electrochemical synthesis of hydrogen peroxide | 87 |
| 3 | US20020008038A1 | Combinatorial Electrochemical Synthesis | 58 |
| 4 | US3964983A | Process for the electrochemical synthesis of organic metal compounds | 35 |
| 5 | US4131521A | Electrochemical synthesis of organic carbonates | 29 |
| 6 | US20080181815A1 | Electrochemical synthesis of haloamine biocides | 25 |
| 7 | US5662834A | Alloys of Ti Ru Fe and O and use thereof for the manufacture of cathodes for the electrochemical synthesis of… | 25 |
| 8 | US4592814A | Electrochemical synthesis of humic acid and other partially oxidized carbonaceous materials | 23 |
| 9 | US20180111083A1 | Devices For Electrocatalytic Conversion Of Carbon Dioxide | 22 |
| 10 | US5074974A | Electrochemical synthesis and simultaneous purification process | 22 |
Citation counts accumulate over time and favour older filings; read them as markers of influence on later art, not as a signal of current commercial importance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Three patterns stand out once family counts, IPC spread and citation data are read together.
Growth already flattening before the peak
Filings rose from 2 in 2017 to 22 by 2022 and 28 by 2023 — a peak, not an inflection. The near-equal 2022 and 2023 counts suggest the field was approaching saturation on its dominant claim types before the most recent, still-understated years.
Nearly the entire dataset shares one core classification
A search targeting faradaic efficiency, electrode material, cell design and product selectivity language returns families that are almost universally classified under electrolytic production of compounds, with catalysis (B01J) and battery/fuel-cell (H01M) as the only secondary groupings with double-digit counts.
US filings outnumber China by a wide margin
United States filings (62) lead China (36), the EPO (27), WIPO/PCT (25), Canada (9) and India (7). That ordering points to where the earliest enforceable rights and the densest prior art will be found for any new filing strategy.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to electrochemical synthesis processes, with the prior art for and against each one.
Assignee landscape and momentum
Co-assignee activity is limited — six pairs total — and the strongest pairing links an energy major with a university research group. Recent-year momentum across the most visible assignees shows no growth, with several logging zero output in the latest year.
Co-assignee activity is sparse and concentrated
Only six co-assignee pairs appear across the dataset. The strongest, an energy major paired with a university research group, accounts for 9 joint families; the next-strongest academic pairing reaches 4.
No assignee is currently accelerating
Across the assignees with the most visible historical activity, recent-year output sits at zero, including one filer showing a -100% year-on-year change. This is consistent with the flattened 2022-2023 filing trend rather than any single company pulling back.
Rights concentrate in three jurisdictions
Nearly three-quarters of receiving-office activity sits across the United States, China and the EPO combined, with Canada and India trailing well behind. Freedom-to-operate work should prioritise these three offices first.
| Assignee | Recent year | YoY |
|---|---|---|
| Vito NV | 0 | — |
| Reliance Industries | 0 | — |
| TotalEnergies OneTech | 0 | — |
| The Governing Council of the University of Toronto | 0 | — |
| CeraMatec, Inc. | 0 | — |
| Syngenta Crop Protection AG | 0 | -100% |
| RAMAKRISHNA MISSION VIDYAMANDIRA | 0 | — |
| PPG Industries, Inc. | 0 | — |
Where to take this
The dataset points to a mature core and a thin set of adjacent openings. Two directions follow.
Map freedom-to-operate against the C25B core
With 178 of 179 families sharing one IPC subclass, a new cell-design or electrode filing needs claim-by-claim comparison against that dense core before drafting, not just a keyword search.
Explore in EurekaTest claim scope in the under-claimed branches
Nitrogen-recovery, metal-compound electrosynthesis and membrane-integration subclasses each carry single-digit family counts, which is a workable signal for narrower, faster-to-grant claims.
Explore in EurekaCommon questions on electrochemical synthesis patents
This dataset defines the category by combining process-chemistry language — faradaic efficiency, electrode material, cell design, overpotential and product selectivity — with core electrolytic-production IPC codes, chiefly C25B alongside C25B3, C25B11 and C07C1. That means the 179 families here are process and cell-design patents rather than pure catalyst-composition-of-matter filings, though catalysis (B01J) and battery-adjacent (H01M) art appears as secondary classification. A search built on different keyword combinations, such as pure electrocatalyst material claims without process terms, would return a different and likely larger set.
Not clearly. Filings rose from 2 families in 2017 to a peak of 28 in 2023, but the 2022 count of 22 was already close to that peak, indicating the growth curve had flattened before reaching its high point. Counts for 2025 and 2026 in the raw data are lower, but that reflects publication lag of roughly 18 months rather than an actual drop in filing behaviour. Anyone using this trend to justify a filing decision should treat the most recent two years as incomplete.
The United States leads with 62 filings in this dataset, ahead of China at 36 and the European Patent Office at 27. WIPO/PCT applications (25) still require national-phase entry before they are enforceable anywhere, so they should not be read as a seventh jurisdiction on par with the others. Canada (9) and India (7) see meaningfully less activity, which is useful context if a competitor's portfolio appears thin outside the three lead offices — it may simply not have expanded there yet.
The classification data shows nearly the entire dataset — 178 of 179 families — sits under the core C25B electrolytic-production subclass, which is where competition for claim scope is heaviest. Secondary subclasses covering nitrogen and ammonia recovery (C01C), metal-compound electrosynthesis (C01G), separation/membrane integration (B01D) and heterocyclic electro-organic synthesis (C07D) each carry only single-digit family counts. That gap is a reasonable place to look for narrower, more easily granted claims rather than trying to carve space out of the dense core cell-design art.
Co-assignee activity is limited to six pairs across the whole dataset, and momentum data for the most visible assignees shows zero output in the latest recorded year across the board, including one filer down 100% year-on-year. This points to a landscape without a single runaway leader currently accelerating filings, rather than one company consolidating control. Combined with the flattened overall filing trend, the pattern suggests the core technology space is settling rather than being actively contested by a fast-moving incumbent.
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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.