EDLC Module Standardization Patent Snapshot 2026
The EDLC module standardization patent space is small and highly concentrated, with a handful of specialist firms holding the majority of filings and the United States as the dominant filing jurisdiction. Annual volume has plateaued near its 2021 peak, signaling a maturing field where targeted technical differentiation — particularly in adjacent application domains — offers the clearest entry points.
FastCap leads a tightly held, specialist-driven field
FASTCAP ULTRACAPACITORS LLC holds the top position in this evidence snapshot, followed by SUSTAINABLE ENERGY TECHNOLOGIES INC and UCAP POWER INC — the three largest filers account for the bulk of activity among the eighteen ranked applicants.
The top five filers collectively account for 57% of the ranked applicants visible in this query’ combined total, indicating a concentrated visible assignee structure with a clear tier gap between the leading commercial specialists and a long tail of academic and individual inventors, particularly from India.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | FastCap Ultracapacitors LLC | 6 | |
| 2 | Sustainable Energy Technologies Inc | 4 | |
| 3 | UCAP Power Inc | 3 | |
| 4 | Maxwell Technologies Global LLC | 2 | |
| 5 | Electric Vehicle Engineering Sweden AB | 2 | |
| 6 | Prof Poorna Chandra Reddy Alla | 1 | |
| 7 | Ilambirai R C | 1 | |
| 8 | Dr P Sekhar Babu | 1 | |
| 9 | FastCap Systems Corp | 1 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 10 | Jame Lourdu S | 1 | |
| 11 | Mailam Engineering College | 1 | |
| 12 | Indian Institute of Science | 1 | |
| 13 | Prof Komala G | 1 | |
| 14 | Dr V S R Kumari | 1 | |
| 15 | Nawatechnologies | 1 | |
| 16 | CVR College of Engineering | 1 | |
| 17 | Mr Y Laxmi Narasimha Rao | 1 | |
| 18 | Poornima P U | 1 |
The dominance of a small set of US-based ultracapacitor specialists suggests that standardization IP is being driven by commercial product development rather than broad consortium or standards-body activity — implying that key technical reference points are privately held.
Filings from the most recent 18–24 months are subject to publication lag and likely undercount actual activity; the 2025–2026 figures should be treated as provisional. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing volume has plateaued; power-grid and capacitor classes dominate the technology mix
The annual filing trend and technology composition charts together reveal a field that reached peak activity around 2021 and has since held steady, concentrated in a narrow set of IPC classes.
Annual filing trend
Activity was negligible before 2019, rose to a plateau around 2021–2022 with four filings each year, then eased slightly in 2023–2024. The 2025–2026 counts are provisional due to publication lag and should not be read as a recovery or continuation trend.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H02J (power supply and grid systems) is the visible class, reflecting the module-integration and power-management focus of standardization efforts. H01G (capacitors) is the second most represented class, while E21B (earth and rock drilling) appears prominently due to downhole power-system applications — an industry-specific use case rather than a general standardization effort. B60L (electric vehicle propulsion) and several smaller classes indicate emerging application pull beyond the core power-electronics domain.
↗ 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.
Modular ultracapacitor energy storage/power delive…
A modular integrated ultracapacitor-based energy storage and power delivery apparatus (UCAP module) is described. In some embodiments, the UCAP module comprises: at least one ultracapacitor cell coupled together in a series, parallel, or combination of both series and parallel configuration; an integrated charging unit; conductive hardware electrically… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Modular signal interface devices and related downh… | 97 |
| 2 | Inertial energy generator for supplying power to a… | 73 |
| 3 | Charge compatible supercapacitor system | 8 |
| 4 | Power system for downhole toolstring | 6 |
| 5 | Supercapacitor to electrochemical hybrid system wi… | 5 |
| 6 | Supercapacitor to electrochemical hybrid system wi… | 5 |
| 7 | System and method for determining range and capaci… | 5 |
| 8 | Modular Ultracapacitor Energy Storage/Power Delive… | 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.
FastCap Ultracapacitors LLC
FastCap Ultracapacitors LLC leads the landscape with six patent records. Its technology emphasis spans H02J (power supply and grid systems), E21B (downhole well applications), and H01G (capacitors), reflecting a product strategy that ties modular ultracapacitor standardization tightly to oil-and-gas downhole power systems — a differentiated vertical rather than a broad general-purpose approach. The related entity FastCap Systems Corp holds one additional record. Momentum trend: new entrant in the most recent filing window.
patent records: 6Sustainable Energy Technologies Inc
Sustainable Energy Technologies Inc holds four patent records, with its focus concentrated in H02J (power supply and grid systems) and B60L (electric vehicle propulsion) — a distinctly different application emphasis from FastCap’s downhole vertical. This EV-integration orientation positions it as the leading voice for EDLC module standardization in the transportation sector. Momentum trend: new entrant in the most recent filing window.
patent records: 4Frequently asked questions
The corpus in scope contains 22 patent families. This is a small, specialist field rather than a high-volume technology area, which makes individual filings and applicant positions disproportionately significant.
FASTCAP ULTRACAPACITORS LLC leads with six patent records, followed by SUSTAINABLE ENERGY TECHNOLOGIES INC with four and UCAP POWER INC with three. The top five applicants account for 57% of the ranked applicants visible in this query’ combined total.
The United States is the leading jurisdiction, followed by India, WIPO (PCT), Canada, and Europe (EPO). The US concentration reflects the commercial focus of visible assignees; Indian filings are predominantly from academic and individual inventors.
The evidence places this field at a maturity stage, with annual filings having plateaued near their 2021 peak. The field is no longer in rapid growth, meaning foundational positions in core classes are largely established.
H02J (power supply and grid systems) is the visible class with 21 patent records, followed by H01G (capacitors) with 10. E21B (earth and rock drilling) appears prominently due to downhole power-system applications specific to the oil-and-gas sector.
The current evidence shows no co-applicant or cross-entity co-filing relationships among the applicants in scope. Activity appears to be driven by independent commercial filers and unaffiliated academic inventors, with no visible standards consortium IP activity.
Built on Patsnap Open Platform
This report’s underlying patent dataset — filings, assignees, technology clusters — is open for developers via MCP and REST API. Free to start, 10,000 credits, no credit card required.
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.