Solid-State Supercapacitor Patents: Leaders, Trends & White Space 2026
- Small, recent field. 22 patent families total, with filings only starting to accelerate after a flat 2022 — this is an early-stage claim map, not a settled one.
- Capacitor-class claims dominate. H01G accounts for 16 of the records against just 6 in H01M, so the claim pressure sits squarely on capacitor architecture rather than battery-adjacent chemistry.
- No assignee is filing continuously. Every tracked assignee, including the most active co-filing group, shows zero filings in the latest year — momentum has not consolidated around a single lab or company.
What this landscape covers
This dataset tracks patent families at the intersection of solid-state or all-solid-state supercapacitors and scalable, roll-to-roll or printed manufacturing processes. It is a narrow, applied slice of the broader supercapacitor field: the search string requires both a solid-state electrode/electrolyte claim and a production-scale fabrication term, which excludes most laboratory-only device papers and most bulk battery manufacturing filings that never mention solid-state capacitor architecture.
Twenty-two families is a small corpus. Read the rankings and composition figures as an early map of where claims currently sit, not as a mature, settled field — the gaps are as informative as the concentrations.
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Filing trend and technology composition
Two views of the same 22 families: how filing activity has moved year over year, and which IPC subclasses carry the claim weight.
Filing trend, 2017–2026
Filings opened at 3 in 2017, dropped to zero at the 2022 midpoint, and climbed back to a peak of 4 in 2025. 2026 shows only 1 filing so far, but that year is still open and publication typically lags filing by around 18 months, so the true 2025–2026 filing rate is understated in this chart.
IPC subclass composition
H01G (capacitors) covers 16 of the 22 records, making it the dominant claim class by a wide margin. H01M (batteries and fuel cells) and C01B (inorganic compounds) trail at 6 and 5, with smaller counts spread across nanotechnology (B82Y), catalysis (B01J), other solid-state devices (H10N) and ceramics (C04B) — evidence that most applicants are claiming the capacitor device itself rather than a battery-hybrid or a purely materials-level invention.
Shares are the percentage of the 22 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Solid-State Supercapacitor Scale-Up and Mass Production with Eureka
This page is one run against one query. Ask Eureka your own question about solid-state supercapacitor scale-up and mass production and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records in this space
All-solid-state-supercapacitor and a process for the fabrication thereof
The present invention discloses an all-solid-state supercapacitor (ASSP) with an enhanced electrode-electrolyte interface that gives very high specific capacitance and areal capacitance, with very low internal resistance (ESR). The invention discloses fabrication by intercalating a solid-state polymer electrolyte inside a conducting porous substrate coated with a charge-storage electrode material.Filed by Council of Scientific & Industrial Research, published 2016-02-25 — the second most-cited record in this corpus.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20140322608A1 | Modified graphitic electrodes for electrochemical energy storage enhancement | 55 |
| 2 | US20160055983A1 | All-solid-state-supercapacitor and a process for the fabrication thereof | 40 |
| 3 | US10319537B2 | Modified graphitic electrodes for electrochemical energy storage enhancement | 19 |
| 4 | US20200295370A1 | Thermally self-chargeable flexible energe storage device and method of forming and operating the same | 15 |
| 5 | WO2019025785A1 | Polymer-based energy storage device | 10 |
| 6 | WO2014170912A1 | All-solid-state-supercapacitor and a process for the fabrication thereof | 10 |
| 7 | CA2845539A1 | Methods and apparatus for the fabrication and use of graphene petal nanosheet structures | 10 |
| 8 | US20210047242A1 | Block copolymer porous carbon fibers and uses thereof | 8 |
| 9 | WO2017143273A1 | Thermally self-chargeable flexible energy storage device and method of forming and operating the same | 8 |
| 10 | WO2019204762A1 | Block copolymer porous carbon fibers and uses thereof | 2 |
Citation counts reward older filings that have had more time to accumulate citations inside this corpus; treat them as a signal of influence on the field rather than of current commercial relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the numbers say about this field
Four figures from this corpus that shape where a filing or a design-around decision should start.
Capacitor claims outweigh battery-hybrid claims by a wide margin
H01G (capacitors) covers 16 of the 22 families, versus 6 in H01M (batteries and fuel cells). Applicants are overwhelmingly claiming the solid-state capacitor device and its electrode-electrolyte interface, not a battery-supercapacitor hybrid architecture.
No single assignee is filing continuously
Every named assignee in the recent-momentum data, including the strongest co-filing pair, shows zero filings in the latest year and a -100% YoY change where measured. Activity is bursty and distributed rather than concentrated in one lab's pipeline.
Filing is split evenly between India and the United States
India and the United States each account for 7 of the tracked filings, with WIPO PCT applications at 6 and Canada at 2. No single jurisdiction dominates receipt of these applications, which suggests applicants are hedging across markets rather than committing to one primary filing venue.
Growth is recent and still accelerating
Filings fell to zero at the 2022 midpoint before climbing to a peak of 4 in 2025. Combined with the 18-month publication lag, this points to a field where the visible filing count for 2025–2026 is an undercount of actual activity.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to solid-state supercapacitor scale-up and mass production, with the prior art for and against each one.
Who is filing, and where the gaps sit
With only 22 families and no assignee filing continuously into the latest year, this is not a field with an entrenched leader — it is a field with a handful of active labs and a long tail of single-filing entrants.
Council of Scientific & Industrial Research
CSIR holds the second most-cited record in the corpus, US20160055983A1, covering an all-solid-state supercapacitor with an enhanced electrode-electrolyte interface. This is the clearest institutional anchor point in the dataset.
A small, tightly linked co-filing cluster
Tungabidya Maharana, Dharmendra and Alekha Kumar Sutar appear together across the three strongest co-assignee pairs in the dataset, each pairing at a count of 2 — a small, self-contained research group rather than a corporate filer.
Academic assignees with stalled recent output
Purdue Research Foundation, Texas A&M, Virginia Tech and several Chinese and Canadian university bodies appear in the assignee data, but each shows zero filings in the latest tracked year — academic activity in this niche has not sustained a filing pipeline.
| Assignee | Recent year | YoY |
|---|---|---|
| Council of Scientific & Industrial Research | 0 | — |
| Purdue Research Foundation | 0 | — |
| Texas A&M University | 0 | — |
| Virginia Tech | 0 | — |
| TUNGABIDYA MAHARANA | 0 | -100% |
| DHARMENDRA | 0 | -100% |
| ALEKHA KUMAR SUTAR | 0 | -100% |
| Governing Council of the University of Toronto | 0 | -100% |
Where to take this
The dataset points to a narrow, still-forming field. Two directions are worth pursuing before committing to a filing strategy.
Model the design-around space around the top-cited claims
The two most-cited records, US20140322608A1 and US20160055983A1, anchor the electrode-electrolyte interface claims that most later filings sit near. Map their independent claims before drafting anything adjacent.
Explore claim charts in EurekaTrack the under-claimed branches before they fill in
Roll-to-roll interconnects, ceramic-substrate electrolytes and continuous-line coating are thin in this corpus relative to the core capacitor class. Early filings there face less prior art today than they will in two years.
Set up white-space alerts in EurekaFrequently asked questions
This landscape tracks 22 patent families published between 2015 and mid-2026 that combine a solid-state or all-solid-state supercapacitor claim with a scalable fabrication term such as roll-to-roll production or printed manufacturing. That is a narrow definition, so the true count of patents touching solid-state supercapacitors broadly is much larger; this figure is specific to the manufacturing-scale intersection. Because publication lags filing by roughly 18 months, the 2025 and 2026 counts in particular should be read as undercounts of actual filing activity.
Council of Scientific & Industrial Research holds one of the most-cited records in this corpus, and a small co-filing group of individual inventors (Tungabidya Maharana, Dharmendra and Alekha Kumar Sutar) shows the strongest co-assignee linkage. Several universities, including Purdue Research Foundation, Texas A&M and Virginia Tech, also appear in the assignee data. None of these, however, shows continued filing into the most recent tracked year, so no single organisation currently dominates this niche.
The bulk of filings sit in IPC subclass H01G, covering capacitors directly, with 16 of the 22 records. A smaller share touches H01M (batteries and fuel cells, 6 records) and C01B (inorganic compounds, 5 records), with residual coverage in nanotechnology, catalysis, other solid-state devices and ceramics. This distribution shows applicants are mostly claiming the capacitor device and its electrode-electrolyte interface rather than battery-hybrid architectures or standalone materials inventions.
Relative to the dense H01G capacitor claims, branches like roll-to-roll printed electrode interconnects, ceramic-substrate solid electrolyte scale-up and catalysis-assisted continuous coating lines carry thin coverage in this corpus. A first claim in these areas would face less crowded prior art today than a general electrode-electrolyte interface claim would. That said, with only 22 families total, any of these branches could fill in quickly once a well-resourced filer moves.
US20160055983A1 covers an all-solid-state supercapacitor fabricated by intercalating a solid-state polymer electrolyte inside a conducting porous substrate coated with a charge-storage electrode material, and it is the second most-cited record in this dataset. Anyone building a device with that specific electrode-electrolyte intercalation structure needs to check its claim scope closely before proceeding. Alternatives that avoid intercalating the electrolyte into the same porous substrate, or that use a distinct electrode coating chemistry, are the most likely design-around routes, though a full claim chart is needed to confirm freedom to operate.
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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.