Asymmetric Supercapacitor Modeling Patents: Leaders & Gaps 2026
- Filing has plateaued, not grown. activity peaked at 7 families in 2025 after sitting flat around 3 a year through the mid-2010s, so this is a stable niche rather than an expanding one.
- Capacitor and battery IPC classes dominate. H01G and H01M together cover 30 of 40 families, with vehicle propulsion (B60L) and grid power (H02J) as the main downstream pulls.
- Ownership is diffuse, not consolidated. only three co-assignee pairings appear across the whole set, and the assignees with the strongest historical link show no filings in the latest year.
What this landscape covers
This landscape tracks patent families that combine an asymmetric, hybrid or asymmetric-capacitor device architecture with an explicit modeling claim — electrochemical modeling, equivalent circuit modeling or capacitance simulation. That intersection is narrow by design: it excludes device-only filings that never describe a model, and modeling-only filings aimed at symmetric or purely electrostatic capacitors.
Forty families span 2015 through mid-2026, filed mainly through the USPTO, India's patent office and the PCT route, with a smaller EPO and German presence. Publication lags filing by roughly 18 months, so 2026 and late-2025 counts will rise as more filings publish.
Filing trend and technology composition
Two views of the same 40 families: how filing volume has moved year over year, and which IPC subclasses the claims actually sit in.
A flat-to-declining filing curve
Filings ran at 3 in 2017, held near that level through the 2022 midpoint, then rose to a peak of 7 in 2025 before the partial 2026 count. That shape reads as steady niche activity punctuated by a recent uptick, not sustained growth — treat the 2025 peak as the current high-water mark rather than an established trend.
Capacitor and battery classes carry the claim weight
H01G (capacitors) leads with 16 records and H01M (batteries, cells and fuel cells) follows with 14, confirming that most filings treat the asymmetric supercapacitor as an energy-storage device rather than a pure electronics component. B60L and B60R together account for 15 records, showing vehicle integration is the largest single application pull; H02J points to grid and power-supply use; the C08G, C08K and C25D classes mark a smaller but consistent electrode-material and coating thread running underneath the device and system claims.
Shares are the percentage of the 40 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Asymmetric Supercapacitor Simulation and Modeling with Eureka
This page is one run against one query. Ask Eureka your own question about asymmetric supercapacitor simulation and modeling and every answer comes back with the patent numbers behind it.
Try EurekaWhat the most-cited and most-recent filings claim
One-step synthesis of barium oxide-cerium oxide thin film electrodes for high-performance asymmetric supercapacitors
Filed by Princess Nourah Bint Abdulrahman University, this 2025 filing describes fabricating an asymmetric supercapacitor with a BaO/CeO2 thin-film electrode deposited by a one-step SILAR method, paired with an activated-carbon counter-electrode and a PVA/KOH solid-state gel electrolyte, assembled in a stacked configuration.Abstract trimmed for length; full claims available via the linked record.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20180154779A1 | Hybrid energy storage | 86 |
| 2 | US10596909B2 | Hybrid energy storage | 9 |
| 3 | WO2016209378A2 | Hybrid energy storage | 7 |
| 4 | WO2018053499A1 | Production of nanoporous films | 6 |
| 5 | US20230216040A1 | Nanopowder Coatings That Enhance Lithium Battery Component Performance | 5 |
| 6 | US20230297729A1 | Electrode structure | 5 |
| 7 | WO2022034318A2 | Electrode structure | 4 |
| 8 | US20200208287A1 | Production of nanoporous films | 3 |
| 9 | IN202521003202A | An electron-rich triazine-based covalent organic framework method of synthesis and use thereof | 2 |
| 10 | WO2024177665A2 | Processes for fabricating zinc ion hybrid supercapacitors, zinc-sulfur and micro zinc-ion energy storage devi… | 2 |
Citation counts favor older filings simply because they have had longer to accumulate citations inside this searched set; read them as a signal of influence on later filers, not as a ranking of current technical importance.
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Three findings that change where a new filing should sit and how much prior art it will face.
One hybrid energy storage filing anchors the field
US20180154779A1, titled Hybrid energy storage, carries 86 citations versus single digits for the next four most-cited records. That gap means later filers are largely building on one foundational disclosure rather than a broad base of prior art — designing near its claims warrants close review before committing.
US, India and PCT carry near-equal weight
The United States leads but not by a wide margin; India and WIPO PCT filings each match roughly two-thirds of the US volume. A freedom-to-operate check limited to the US or Europe alone would miss a third of the documented activity.
Collaboration is the exception, not the pattern
Only three assignee pairings recur across the dataset, and the strongest of them still totals just 5 shared families. Most of this landscape is filed by single institutions working independently, which lowers the risk of broad jointly-held blocking positions.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to asymmetric supercapacitor simulation and modeling, with the prior art for and against each one.
Who is filing, and where activity has stalled
Academic and research-foundation assignees hold the strongest historical co-filing links in this set, but none show filings in the most recent year — a sign the field's early leaders have moved on or shifted focus elsewhere.
University-foundation pairing leads historical collaboration
The University of Michigan Board and the Clemson University Research Foundation share the largest co-filing link in the dataset at 5 families, ahead of a University of Southern Mississippi / University of California pairing at 4. Both pairings show zero filings in the latest year.
New institutional entrants are still arriving
The most recent representative filing comes from a university not among the historically dominant assignees, filed in 2025 on thin-film electrode synthesis rather than modeling per se — a reminder that device and modeling claims often travel in the same family.
No incumbent shows current-year activity
Every assignee with a notable co-filing history in this dataset — the Michigan, Clemson, Southern Mississippi, California, Oxford and Central Florida groups — records zero filings in the latest year tracked. That leaves the field open for a new assignee to establish a current filing position with less direct competition.
| Assignee | Recent year | YoY |
|---|---|---|
| The Regents of the University of Michigan | 0 | — |
| Oxford University Innovation | 0 | — |
| Clemson University Research Foundation | 0 | — |
| University of Southern Mississippi | 0 | — |
| The Regents of the University of California | 0 | — |
| University of Central Florida Research Foundation, Inc. | 0 | — |
| Texas A&M University | 0 | — |
| Caterpillar Inc. | 0 | — |
Where to take this analysis
The dataset points to a stable but not stagnant field, where the modeling claim itself is the thinner layer beneath a thicker device-and-material literature.
Map the modeling claims specifically
Separate device/electrode claims from the equivalent-circuit or electrochemical-model claims within each family to see how much of the 40-family set actually locks up a modeling method versus a device that happens to mention one.
Explore in EurekaWatch for the next filer in the gap
With every historically active assignee at zero in the latest year, track new entrants like the 2025 Princess Nourah Bint Abdulrahman University filing to see who establishes the next collaboration pattern.
Set up monitoring in EurekaCommon questions on this landscape
This landscape identifies 40 patent families published between 2015 and mid-2026 that combine an asymmetric, hybrid or asymmetric-capacitor architecture with an explicit modeling claim, such as electrochemical modeling, equivalent circuit modeling or capacitance simulation. That count reflects a fairly narrow search intersection, so broader searches on device architecture alone or modeling methods alone will return larger, less specific sets. Because publication lags filing by roughly 18 months, the 2025-2026 figures will likely rise as more filings publish.
The trend is flat to slightly rising, not a clear growth curve. Filings sat around 3 a year through the mid-2010s, stayed near that level through 2022, then climbed to a peak of 7 families in 2025. That peak should be read cautiously since it is the most recent full year and the following year's count is still partial, but the underlying pattern is a stable niche rather than a fast-expanding one.
Ownership in this dataset is diffuse rather than concentrated around one or two large filers; only three co-assignee pairings recur across all 40 families. The strongest historical link is between the University of Michigan Board and the Clemson University Research Foundation, followed by a University of Southern Mississippi and University of California pairing. Notably, none of these historically linked assignees show any filings in the most recent year, which points to an opening for new entrants rather than an entrenched incumbent position.
US20180154779A1, titled Hybrid energy storage, is the most-cited record in this dataset at 86 citations, far ahead of the next most-cited filings which sit in single digits. That level of citation concentration means it functions as a foundational reference point that many later filings in this space build on or distinguish themselves from. Anyone filing a closely related hybrid energy storage device or model should review this record's claims specifically rather than relying on the broader prior art landscape.
The clearest gaps sit in areas with strong device or material precedent but thin modeling-claim depth: equivalent-circuit models tailored to solid-state gel electrolytes, capacitance simulation under electric-vehicle duty-cycle loading, models that account for electrode-coating variation, and state-of-charge modeling for grid-scale hybrid supercapacitors. These branches draw on IPC classes already well represented in the dataset, such as H01G, H01M, B60L and C25D, but the modeling layer specific to them is comparatively underdeveloped in the 40 families reviewed here.
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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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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.