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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/asymmetric-supercapacitor-reliability-and-durability-patent-landscape/ · Patsnap · data cut-off 2026-07-31 · downloaded from the live page
Patent Landscape · SupercapacitorsAsymmetric Supercapacitor Reliability and Durability Patents
- Still accelerating. Filings climbed from 5 in 2017 to a peak of 13 in 2025, with the 2022 midpoint at just 4 confirming genuine growth, not a plateau.
- No dominant filer. Only 4 co-assignee pairings exist across all 78 families, and several tracked assignees show zero filings in the latest year — this is a fragmented field, not a concentrated one.
- Durability claims spill outside H01G. 11 records also sit in H01M (batteries) and 10 in B82Y (nanotechnology), showing reliability gains are being claimed through battery-adjacent chemistry and nanostructured materials.
78
Published Records
26%
Top-5 Share of All Records
+60%
3-Yr Growth (lag-adjusted)
IN
Leading Jurisdiction
Published byPatsnap Research··7 min readSourced from Patsnap Eureka
Landscape Overview
Why this patent landscape matters now
Asymmetric and hybrid supercapacitors close the gap between batteries and conventional capacitors, but cycle life, capacitance retention and self-discharge suppression remain the properties that decide whether a design reaches production. This landscape tracks 78 patent families filed between 2015 and mid-2026 against exactly those durability claims, rather than against supercapacitor filings in general.
Filing has moved from a handful of early entrants to a genuinely accelerating field, concentrated across three receiving offices and reaching into battery and nanotechnology classifications as often as it stays inside core capacitor claims.
Filing volume by year, 2017-2026
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on Asymmetric Supercapacitor Reliability and Durability covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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Filing Data
Filing trends and technology composition
78 patent families published between 2015 and mid-2026 map where asymmetric and hybrid supercapacitor reliability work is actually being filed, and which adjacent fields it touches.
Filing activity is still climbing
Annual filings moved from 5 in 2017 to a peak of 13 in 2025, with 2026 already at 7 on a partial year. The 2022 midpoint of 4 confirms this is acceleration, not a plateau — though the newest years will read low until publication catches up with filing.
Reliability claims cluster in H01G but reach into batteries and nanotech
Every record sits in H01G (capacitors), the core subclass this search targets. The next-largest overlaps are H01M (batteries and cells, 11 records) and B82Y (nanotechnology applications, 10 records), showing that durability improvements are being claimed alongside battery-adjacent chemistry and nanostructured materials rather than in isolation.
Shares are the percentage of the 78 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Source: Patsnap Eureka. Filing trend and technology composition. Derived from a Patsnap search on Asymmetric Supercapacitor Reliability and Durability covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.
Go deeper on Asymmetric Supercapacitor Reliability and Durability with Eureka
This page is one run against one query. Ask Eureka your own question about asymmetric supercapacitor reliability and durability and every answer comes back with the patent numbers behind it.
Try EurekaKey Filings
Representative and most-cited patents
Representative Filing
Asymmetric Supercapacitor — US20250046530A1
KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
The disclosure describes an asymmetric supercapacitor combining a tomato-leaf activated carbon negative electrode with hierarchical porosity, a polyaniline positive electrode, and an ionic liquid electrolyte held within a separator between the two electrodes. The filing states the device may be implemented in a heart pulse rate monitoring system.Filed by King Fahd University of Petroleum and Minerals, published 2025-02-06.
Most-cited records in this dataset
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20190252131A1 | Hybrid supercapacitor containing a niobium composite metal oxide as an anode active material | 20 |
| 2 | US9385397B2 | Prelithiated current collector and secondary lithium cells containing same | 20 |
| 3 | US20190180949A1 | supercapacitor | 14 |
| 4 | US10854395B1 | Asymmetric supercapacitor with hierarchical electrodes | 12 |
| 5 | US20220246363A1 | supercapacitor | 7 |
| 6 | CN110783115A | 一种二氧化锰/碳/泡沫金属复合材料的制备方法和应用 | 7 |
| 7 | WO2018033912A1 | Asymmetric supercapacitor electrode having a combination of carbon allotropes | 6 |
| 8 | CN107195482A | 一种纳米棒列阵复合材料及其制备方法和应用 | 6 |
| 9 | CN106298270A | 一种非对称超级电容器的正极片及其制备方法和应用 | 6 |
| 10 | US20130170098A1 | Asymmetric hybrid supercapacitors based on nanotube nanowire composites | 6 |
Citation counts reflect influence within the searched corpus and skew toward older filings; treat them as a signal of prior influence, not current commercial importance.
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.
Source: Patsnap Eureka. Citation counts and representative records. Derived from a Patsnap search on Asymmetric Supercapacitor Reliability and Durability covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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What the filing pattern actually indicates
Three figures from this dataset matter more than the headline count: where filing is concentrated, how fast it is moving, and what sits just outside the core claim space.
Filing Momentum
5 → 13
annual filings, 2017 to peak 2025
Growth is still in its early stage
The climb from 5 filings in 2017 to 13 in 2025, with a midpoint of only 4 in 2022, shows the acceleration is recent rather than sustained over the full window. Expect the true 2025-2026 volume to be higher once publication catches up.
Treat 2026's partial count of 7 as a floor, not a ceiling.
Assignee Concentration
4 pairs
co-assignee pairings across 78 families
A fragmented field, not a consolidated one
With just four co-assignee pairings in the entire dataset and several named assignees at zero filings in the latest year, no single organisation has locked up a defensible claim position yet.
Fragmentation like this usually means freedom-to-operate risk is lower but so is any single actor's blocking power.
Cross-field Overlap
11 / 10
records also in H01M / B82Y
Durability gains borrow from batteries and nanotech
Battery-cell chemistry (H01M, 11 records) and nanotechnology applications (B82Y, 10 records) are the two largest overlaps with the core H01G capacitor class, indicating that cycle-life and retention improvements are frequently materials-driven.
A materials-first search strategy will surface prior art a pure capacitor-class search misses.
Filing Geography
India 25 · China 24 · US 20
top three receiving offices
Filing is split across three offices, not centred on one
India, China and the United States each account for a substantial share of receiving-office activity, with no single jurisdiction dominating. Only 3 PCT filings and 5 Israeli filings round out the remainder.
Any freedom-to-operate check needs all three primary offices, not just one.
Eureka AI Agent
Looking for what nobody has claimed yet?
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to asymmetric supercapacitor reliability and durability, with the prior art for and against each one.
Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on Asymmetric Supercapacitor Reliability and Durability covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Competitive Landscape
Who is filing, and where the field is still open
No single assignee controls this space. Filing is spread across universities, research institutes and a handful of companies, with only four co-assignee pairings across the entire 78-family dataset and several tracked assignees showing zero activity in the most recent year.
Filing Pattern
78 families
total tracked, 2015-2026
A long tail, not a concentrated core
With no dominant assignee and only four co-filing pairs on record, the field currently rewards a specific technical claim over broad portfolio strategy.
Watch for consolidation as filing volume continues to climb.
Momentum Check
0 in latest year
for several previously active assignees
Past activity does not mean current activity
Multiple named assignees, including King Fahd University of Petroleum and Minerals and the Regents of the University of California, recorded zero filings in the latest tracked year despite earlier activity.
Zero-momentum assignees may still hold blocking claims from earlier filings.
Co-filing
4 pairs
co-assignee pairings total
Collaboration is rare so far
The strongest recorded pairing links an individual inventor with a university research group, appearing twice — a modest signal compared to the size of the overall dataset.
Low co-filing suggests most work is still happening inside single institutions.
Geographic Spread
India, China, US
top three receiving offices
Three offices carry most of the filing weight
India (25), China (24) and the United States (20) between them account for the large majority of receiving-office activity, with PCT and Israeli filings a small remainder.
A regional-only search will miss roughly a third of the corpus.
Recent-year filing momentum by assignee
| Assignee | Recent year | YoY |
|---|---|---|
| King Fahd University of Petroleum and Minerals | 0 | -100% |
| Hydrolite Ltd. | 0 | — |
| CHEN ZHENG | 0 | — |
| Regents of the University of California | 0 | — |
| United Arab Emirates University | 0 | — |
| Nanotek Instruments, Inc. | 0 | — |
| Volta Private Limited | 0 | — |
| Wuhan University | 0 | — |
Source: Patsnap Eureka. Assignee-level momentum. Derived from a Patsnap search on Asymmetric Supercapacitor Reliability and Durability covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Next Steps
Where to take this analysis next
The filing data points to three follow-on checks worth running before committing R&D or freedom-to-operate resources to a specific durability approach.
Run a claim-level freedom-to-operate check
The two most-cited records in this dataset define the boundaries most later filers have had to work around. A claim chart against your specific electrode and electrolyte combination will show whether you sit inside or outside their scope.
Build a claim chart in EurekaTrack the zero-momentum assignees
Several previously active filers show no activity in the latest tracked year. Their earlier claims may still block new filings even without continued output, so they are worth monitoring rather than dismissing.
Set up assignee monitoring in EurekaScope a filing in the thin branches
Sub-areas like implantable-device integration and catalysis-assisted electrode processing carry only single-digit filing counts. A narrowly drafted first claim tied to a measurable durability threshold has room to clear the existing art.
Explore white space in EurekaSource: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on Asymmetric Supercapacitor Reliability and Durability covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
FAQ
Common questions on this landscape
The core classes are H01G11/46, H01G11/06 and H01G11/58, which together define the supercapacitor electrode and cell structures this search is built on. Filings frequently overlap with H01M (batteries, cells and fuel cells) and B82Y (nanotechnology applications), reflecting that durability improvements often come from battery-adjacent materials science or nanostructured electrodes rather than capacitor design alone. A smaller but consistent overlap with H02J (power supply and grid systems) shows some filings target system-level integration rather than the cell itself.
Filing is fragmented across universities, research institutes and individual inventors rather than dominated by a small number of large corporates, with only four co-assignee pairings across the entire 78-family dataset. Several named assignees, including King Fahd University of Petroleum and Minerals and the Regents of the University of California, show zero filings in the most recent tracked year, indicating a long tail of episodic rather than sustained filers. This pattern suggests the field has not yet consolidated around a small set of dominant players.
Yes. Annual filings rose from 5 in 2017 to a peak of 13 in 2025, with the 2022 midpoint at only 4, confirming the growth curve is still accelerating rather than flattening. Because patent publication typically lags filing by around 18 months, the 2026 count of 7 almost certainly understates actual filing activity for that year. Readers should treat the most recent one to two years as a floor, not a ceiling, on real filing volume.
The thinnest branches sit outside core capacitor chemistry: diagnosis and surgery integration (A61B, 3 records), catalysis-assisted electrode processing (B01J, 3 records) and non-metallic inorganic compound electrolytes (C01B, 3 records) each have only a handful of filings against the 78-family total. With just four co-assignee pairs in the whole dataset, none of these thin branches currently show a consolidating filer, which is itself a sign the space remains open. A first filing here would need a specific, measurable durability claim rather than a broad chemistry description to clear the surrounding art.
US20250046530A1, filed by King Fahd University of Petroleum and Minerals and published in February 2025, claims a specific asymmetric supercapacitor built from a tomato-leaf activated carbon negative electrode, a polyaniline positive electrode, and an ionic liquid electrolyte held in a separator between them. Its scope is narrow: it blocks that exact biomass-carbon-and-polyaniline pairing with an ionic liquid electrolyte, not activated carbon or polyaniline electrodes used with different partner materials. The filing's stated application in heart-pulse-rate monitoring further ties its practical enforcement toward biomedical-adjacent implementations rather than general-purpose energy storage.
Answers are grounded in the same dataset. Derived from a Patsnap search on Asymmetric Supercapacitor Reliability and Durability covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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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.