EDLC Simulation & Modeling Patent Snapshot 2026
The EDLC simulation and modeling patent space is in a growth phase, with annual filings accelerating sharply and Korea Kumho Petrochemical leading by patent record count ahead of Panasonic Holdings. Activity is concentrated among a small number of industrial and academic filers, with Chinese institutions collectively dominating the filing jurisdiction.
Korea Kumho Petrochemical leads a concentrated but rapidly expanding field
Korea Kumho Petrochemical holds the top position by patent records, followed by Panasonic Holdings in second place. The top five filers collectively account for 51% of the ranked applicants visible in this query’ combined total, signaling a moderately concentrated visible assignee structure with meaningful separation between the leading industrial players and the broader university-heavy long tail.
The tier gap between the top two players and the rest is notable: the third-ranked filer, New York University, holds roughly one-third of the leader’s count. Below rank three, the field fragments quickly into single- or dual-record filers, most of them Chinese academic institutions or regional utilities.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Korea Kumho Petrochemical Co., Ltd. | 11 | |
| 2 | Panasonic Holdings Corporation | 9 | |
| 3 | New York University | 4 | |
| 4 | EAST CHINA UNIV OF SCI & TECH | 2 | |
| 5 | Vellore Institute of Technology | 2 | |
| 6 | Siemens AG | 2 | |
| 7 | North China Electric Power University | 2 | |
| 8 | Ningbo Institute of Technology, Zhejiang University | 1 | |
| 9 | State Grid Hunan Electric Company Disaster Prevention Branch | 1 | |
| 10 | Xi’an Jiaotong University | 1 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | South China University of Technology | 1 | |
| 12 | Sinopec Shengli Oilfield | 1 | |
| 13 | Saveetha Engineering College | 1 | |
| 14 | Narula Institute of Technology | 1 | |
| 15 | Shenzhen TIG Technology Co., Ltd. | 1 | |
| 16 | Hebei University of Technology | 1 | |
| 17 | Beijing Ruihe Debao Thermal Technology Co., Ltd. | 1 | |
| 18 | Yiyang Wanjingyuan Electronics | 1 | |
| 19 | State Grid Hunan Electric Power Company Limited | 1 | |
| 20 | State Grid Corporation of China | 1 |
Korea Kumho Petrochemical’s emphasis on electrical measurement and data-processing IPC classes suggests its patents target characterization and equivalent-circuit modeling workflows, while Panasonic Holdings focuses tightly on capacitor-class filings — a complementary but distinct technical emphasis that reduces direct head-to-head overlap at the claim level.
The most recent 18–24 months of filings are likely under-represented due to standard patent publication lag; current totals should be treated as a floor rather than a ceiling for that window. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filings are rising sharply and digital-modeling IPC classes dominate the mix
The annual filing trend and the technology-composition breakdown together reveal a field that has accelerated since 2022 and is anchored in computational and measurement IPC classes rather than purely device-level patents.
Annual filing trend
Annual filings were largely flat at low single-digit levels from 2017 through 2022, then jumped in 2023 and reached a visible peak in 2024. The 2025 and 2026 bars are almost certainly understated due to publication lag and should not be read as a slowdown; the multi-year growth rate of 167% confirms the field is still expanding.
↗ Hover for values · click a bar to ask EurekaTechnology composition
Electric digital data processing (G06F) and electric and magnetic measurement (G01R) together account for the majority of classified records, confirming that simulation and parameter-identification methods — rather than physical device fabrication — are the primary subject matter. Capacitor-class (H01G) and battery/cell-class (H01M) records form a secondary cluster, reflecting device-level modeling. AI-computing (G06N) and power-grid (H02J) branches are present but thin, pointing to under-developed sub-areas.
↗ 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.
Method and system for modelling ultracapacitor
A method and a system for modelling an ultracapacitor are disclosed. The method involves modelling the ultracapacitor using measured and simulated charge-discharge plots. Measured plots are obtained from a capacitor modelling apparatus that uses one or more constant currents and/or voltages, while simulated plots are generated by a simulation platform using… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Method and apparatus for determining Characteristi… | 213 |
| 2 | Method and apparatus for managing ultracapacitor e… | 49 |
| 3 | Method and apparatus for determining characteristi… | 36 |
| 4 | 一种结合Q增强学习的实时模糊能源管理方法 | 15 |
| 5 | Systems and methods for adaptive fast-charging for… | 10 |
| 6 | GERÄT UND VERFAHREN ZUR ERFASSUNG VON KENNZEICHNEN… | 9 |
| 7 | 一种混合电容器等效电路模型及在线参数辨识方法 | 7 |
| 8 | Method and apparatus for determining characteristi… | 7 |
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.
Korea Kumho Petrochemical
Korea Kumho Petrochemical holds 11 patent records, the highest count in the corpus. Its filings cluster in electrical and magnetic measurement (G01R 31), digital data processing (G06F 17), and battery/cell modeling (H01M 10), indicating a cross-domain simulation capability spanning EDLC characterization and equivalent-circuit parameter identification. No new-entrant or sharp-acceleration momentum flag was returned for this applicant, suggesting a sustained and established filing program rather than a recent surge.
11 patent recordsPanasonic Holdings
Panasonic Holdings holds 9 patent records, closely trailing the leader. Its focus is tightly concentrated in capacitor-class IPC codes (H01G 11 and H01G 9), with a minor semiconductor-device (H01L 21) entry, reflecting a device-centric modeling orientation tied directly to its capacitor manufacturing expertise. Like the leader, Panasonic shows a stable filing profile without a recent-acceleration flag, suggesting its EDLC modeling portfolio is part of a long-running product development program.
9 patent recordsFrequently asked questions
The corpus covers 28 patent families in scope globally. This is a small but fast-growing field; the 167% multi-year growth rate indicates that foundational IP positions are still being established.
Korea Kumho Petrochemical leads with 11 patent records, ahead of Panasonic Holdings with 9 patent records. Together they account for the majority of the top-tier industrial portfolio in this space.
The field is classified as Growth. Annual filings have been rising, with a visible acceleration from 2023 onward. The most recent bars are likely understated by publication lag, so the underlying filing velocity is higher than raw recent counts suggest.
China is the leading jurisdiction by patent record count, followed by the United States, with Europe (EPO) and India tied for third. South Korea, Germany, and WIPO PCT filings are present but represent a smaller share of recorded activity.
Co-filing activity is minimal. The only documented co-applicant relationship in the evidence is between North China Electric Power University and State Grid Hunan’s science research institute, covering a single record. Most filers appear to be filing independently.
G06N (AI and machine-learning models), H02J (power supply and grid systems), G01N (material analysis and testing), and B60L (electric vehicle propulsion) all carry low record counts relative to the visible G06F and G01R classes. These branches are adjacent to the core simulation work and currently lack dense prior-art coverage.
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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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