Pseudocapacitor Hybrid/Asymmetric Patent Snapshot 2026
The pseudocapacitor hybrid/asymmetric space is a small but growing field dominated by a single institutional leader — France’s Commissariat à l’Énergie Atomique et aux Énergies Alternatives — holding a commanding share among the top filers. Activity is in a growth stage, with new academic entrants emerging and the United States as the primary filing jurisdiction.
One institution leads a nascent, academically-driven field
The Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA) sits at the top of the applicant ranking with 6 patent records, well ahead of all other filers. The next-ranked applicants — Pondicherry University and Nanotek Instruments Group — each hold 2 patent records.
The top five filers account for 71% of the combined total among the ranked applicants visible in this query, signalling high concentration. Below the top tier, the remaining applicants each hold a single patent record, indicating a long tail of one-off entrants rather than a developing second tier.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA) | 6 | |
| 2 | Pondicherry University | 2 | |
| 3 | Nanotek Instruments Group LLC | 2 | |
| 4 | Guangxi University for Nationalities | 1 | |
| 5 | Hubei University | 1 | |
| 6 | Honeycomb Battery Co. | 1 | |
| 7 | HUAZHONG UNIV OF SCI & TECH | 1 | |
| 8 | Hangzhou Dianzi University | 1 | |
| 9 | King Khalid University – Central Laboratories | 1 | |
| 10 | King Fahd University of Petroleum and Minerals | 1 |
CEA’s lead position, spanning both capacitor and battery-cell classifications, reflects a deliberate hybrid-device strategy integrating electrochemical storage architectures. This institutional depth creates a meaningful barrier for new entrants attempting to cover the same claim space.
The most recent approximately 18–24 months of filings are subject to publication lag and are likely under-represented in the current corpus; apparent activity levels in 2024–2025 should be read as a floor, not a ceiling.
Filing activity is recovering after a mid-period lull; capacitor classifications dominate
Two lenses — the annual filing trend and the technology classification mix — reveal both the pace of field development and the relative investment across technical sub-domains.
Annual filing trend
Filing activity first appeared in 2018, fell to near-zero through 2021–2022, and has recovered in 2023–2025. The field is classified in a growth stage with a 50% recent growth rate. The 2024–2025 bars should be treated as a lower bound given publication lag.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01G (Capacitors) is by far the visible classification with 18 patent records, followed by H01M (Batteries, cells and fuel cells) with 7. Nanotechnology (B82Y), layered products (B32B), and metal-compound chemistry (C01G, C07F) each appear in only 1–2 records, marking them as sparsely covered adjacent branches.
↗ 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.
Hybrid supercapacitor containing a niobium composi…
A graphene-enabled hybrid particulate for use as an anode active material in a hybrid supercapacitor or lithium-ion capacitor, wherein the hybrid particulate is formed of a single or a plurality of graphene sheets and a single or a plurality of fine primary particles of a niobium-containing composite metal oxide, having a size from 1 nm to 10 μm, and the… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Hybrid supercapacitor containing a niobium composi… | 20 |
| 2 | Prelithiated current collector and secondary lithi… | 20 |
| 3 | 一种高性能不对称电容器的正负电极材料及其制备方法 | 8 |
| 4 | 一种全固态非对称电容器及其制备方法 | 4 |
| 5 | 锰掺杂炭凝胶@（PANI/GO）n//NGA@PEDOT非对称电容器的制备方法 | 3 |
| 6 | Process for manufacturing an alkaline-based hybrid… | 3 |
| 7 | Process for synthesizing neodymium-based metal-org… | 1 |
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.
Assignee snapshot from the current evidence set
The applicants below are visible in this query result. Because the evidence set is relatively small, read this section as a directional snapshot rather than a full competitive ranking.
CEA
CEA holds 6 patent records — the largest position in the corpus by a wide margin. Its technology focus spans H01G 11 (Capacitors), H01M 10, and H01M 4 (Batteries and fuel cells), reflecting an integrated hybrid-device strategy that bridges supercapacitor and battery architectures. No momentum trend data is separately reported for CEA, but its multi-classification depth signals sustained, deliberate prosecution.
patent records: 6Pondicherry University
Pondicherry University holds 2 patent records and is flagged as a new entrant with an upward momentum trend. Its technology focus spans H01G 11 (Capacitors) and two nanotechnology sub-classes (B82Y 30 and B82Y 40), distinguishing it from CEA’s battery-hybrid emphasis and pointing toward nano-structured electrode materials as its differentiated angle.
patent records: 2Frequently asked questions
The evidence covers 9 patent families in the pseudocapacitor hybrid/asymmetric space as defined by the search corpus.
The Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA) leads with 6 patent records, spanning capacitor (H01G) and battery-cell (H01M) classifications — the broadest multi-branch footprint in the corpus.
The field is classified as Growth. Annual filings have resumed after a mid-period lull in 2021–2022, and the recent growth rate is 50%. The most recent 18–24 months are under-counted due to publication lag, so the true pace is likely higher.
The United States leads with 7 patent records, followed by China with 4, and Europe (EPO), India, and WIPO (PCT) each with 2.
No co-applicant relationships are detected in the current evidence. All filings are single-applicant records, suggesting the field has not yet developed formal consortia or cross-institutional filing partnerships.
Nanotechnology applications (B82Y, 2 records), layered products and laminates (B32B, 1 record), compounds of other metals (C01G, 1 record), and organo-metallic compounds (C07F, 1 record) are the sparsest branches adjacent to the visible H01G capacitor core.
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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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