Pseudocapacitor Electrode-Electrolyte Interface Patent Snapshot
The pseudocapacitor electrode-electrolyte interface remains a nascent, lightly patented field with 9 patent families in scope, dominated by a small cluster of academic and industrial players, none holding a commanding share. The field is still expanding on a multi-year basis, with recent three-year filings well above the prior window, though annual volume has eased from its 2018 peak and recent years remain further understated by publication lag.
A fragmented early-stage field with no dominant assignee
The leading applicant, Intel Corp, holds 2 patent records — the same count as IIT Kanpur and William Marsh Rice University — placing all three applicants in a flat-topped tier. No single entity has established a blocking position.
The top five filers account for 62% of the combined total of the ranked applicants visible in this query, which for a corpus this small signals that filing is concentrated among a very short list of actors, but the absolute counts are low enough that any new entrant filing a handful of families could immediately reorder the ranking.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Intel Corporation | 2 | |
| 2 | Indian Institute of Technology Kanpur | 2 | |
| 3 | William Marsh Rice University | 2 | |
| 4 | ANILAEI | 1 | |
| 5 | Sun Yat-sen University | 1 | |
| 6 | Purdue Research Foundation | 1 | |
| 7 | CHRISMA ROSE BABU | 1 | |
| 8 | Vellore Institute of Technology | 1 | |
| 9 | ARUNA K KUNHIRAMAN | 1 | |
| 10 | VEL TECH RANGARAJAN DR SAGUNTHALA R&D INST OF SCI … | 1 |
Intel’s presence alongside two research universities suggests the field sits at the boundary of academic discovery and early industrial exploration — a pattern typical of pre-commercialization electrochemistry niches where university groups pioneer materials and corporations probe application pathways.
The most recent 18–24 months of filings are subject to publication lag and will likely show upward revision as applications are published; no inference about a slowdown in the most recent period should be drawn from current counts.
Multi-year growth with a capacitor-centric technology mix
Two charts together show how filing activity has evolved and where technical emphasis currently sits across IPC classes.
Annual filing trend
Activity opened in 2018 with a brief spike, remained sparse through 2020, then resumed a steadier cadence from 2021 onward. The field is expanding on a multi-year basis — recent three-year filings sit 300% above the prior three-year window — but annual volume has eased from the 2018 peak. The 2024–2026 bars will grow as pending applications publish.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01G (Capacitors) accounts for the largest share of patent records, confirming that device-level capacitor claims are visible in. C01B (non-metallic elements and inorganic compounds) and H01M (batteries, cells, and fuel cells) are the next most populated classes, reflecting materials and cross-device relevance. Nanostructures (B82B), electrolytic production (C25B), crystal growth (C30B), and H10P each hold only one or two records, marking them as adjacent and underserved 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.
Pseudocapacitive electrodes and methods of forming
Pesudocapacitive electrodes having improved electrochemical properties for energy storage systems, and methods for their manufacture. The pseudocapacitive electrode may include a porous substrate and a nanoscale structure having an array of nanoneedles or an array of nanopetals located on the substrate. The nanoscale structure includes a bi- or tri-metal… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Pseudocapacitive electrodes and methods of forming | 20 |
| 2 | 一种赝电容基超级电容器二极管及其制备方法 | 4 |
| 3 | Method of increasing an energy density and an achi… | 3 |
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.
Intel Corp
Intel Corp holds 2 patent records — the joint-highest count in the corpus. Its filings concentrate on H01G 11 (Capacitors), H01M 10 (Batteries, cells, and fuel cells), and H01G 9 (Capacitors), suggesting a device-integration perspective consistent with on-chip energy storage research. Momentum data for Intel is not separately broken out, but the corpus trajectory reflects the broader field pattern of activity resuming after a post-2018 lull.
patent records: 2Indian Institute of Technology Kanpur
IIT Kanpur also holds 2 patent records and is flagged as a new entrant with an upward momentum trend. Its technical focus spans B82B 40 (Nanostructures), C01B 32 (non-metallic elements and inorganic compounds), and H01G 11 (Capacitors) — a materials-up approach that contrasts with Intel’s device-down orientation. As a new entrant, its prior-period baseline was zero, so the momentum signal reflects an initial filing burst rather than sustained scale.
patent records: 2Frequently asked questions
The current corpus contains 9 patent families in scope. This is a small but growing body of prior art, and the count is likely to increase as recently filed applications clear publication lag.
Intel Corp, Indian Institute of Technology Kanpur, and William Marsh Rice University each hold 2 patent records — the highest count in the corpus. Anilaei, Sun Yat-sen University, Purdue Research Foundation, and several individual inventors each hold 1 record.
Evidence places the field in a Growth stage. Recent three-year filings are 300% above the prior three-year window, confirming multi-year expansion, though annual volume has eased from its 2018 peak. The most recent years are further understated by publication lag.
India leads with 6 patent records, followed by the United States with 3, Israel with 2, and China with 1. India’s lead reflects active filing by Indian academic institutions, particularly IIT Kanpur and other universities in the corpus.
H01G (Capacitors) is the visible class with 12 patent records. C01B and H01M each hold 5 records. At the sparse end, C25B, C30B, and H10P each have only 1 record, and B82B (Nanostructures) has 2 — making these the most under-served adjacent branches relative to the core topic.
The most-cited work in the corpus is titled ‘Pseudocapacitive electrodes and methods of forming,’ with 20 citations. The second most-cited is a Chinese-language document on pseudocapacitance-based supercapacitor diodes with 4 citations, and the third, on increasing energy density, has 3 citations. Patent numbers are not available in the current evidence for these titles.
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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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