EDLC Module/Pack Integration Patent Landscape 2026
The EDLC module and pack integration field is still expanding on a multi-year basis, though annual volume has eased from its 2021 peak; the corpus is fragmented across over twenty active filers with no single applicant holding a dominant share. Power supply and grid-system integration (H02J) is the overwhelmingly dominant technology route, with electric vehicle propulsion and military defence as the next significant clusters.
Fragmented field with Ocado Innovation at the top of a shallow hierarchy
Ocado Innovation Ltd leads the applicant ranking, followed closely by Unison Industries LLC and Battelle Memorial Institute — none of which commands an overwhelming position relative to the field’s breadth.
The top five filers account for only about one-fifth of the hundred largest filers’ combined total, indicating a genuinely fragmented competitive landscape with no single gatekeeper. The gap between the top applicant and the next tier is narrow, suggesting the lead position is contestable.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Ocado Innovation Ltd | 11 | |
| 2 | Unison Industries LLC | 8 | |
| 3 | Battelle Memorial Institute | 8 | |
| 4 | FastCap Ultracapacitors LLC | 6 | |
| 5 | UCAP Power Inc | 5 | |
| 6 | Rockwell Collins Inc | 5 | |
| 7 | Honeywell International Inc | 5 | |
| 8 | Dresser LLC | 4 | |
| 9 | VITO (Flemish Institute for Technological Research) | 4 | |
| 10 | Enedym Inc | 4 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Maxwell Technologies Global LLC | 3 | |
| 12 | Eaton Corporation | 3 | |
| 13 | Westechpower Management Pte Ltd | 3 | |
| 14 | Maxwell Technologies Inc | 3 | |
| 15 | Tsinghua University | 3 | |
| 16 | Power Systems Co Ltd | 3 | |
| 17 | Renault SA | 2 | |
| 18 | Vishwakarma Institute of Technology | 2 | |
| 19 | National Institute of Technology Calicut | 2 | |
| 20 | MR PATRICK JAMES NOLAN | 2 |
The presence of both commercial technology firms (Ocado, Unison, FastCap, UCAP Power) and defence-oriented or industrial research entities (Battelle, Rockwell Collins, Honeywell) implies the field spans multiple end-use sectors with limited cross-sector consolidation.
Activity in 2025–2026 is understated due to typical patent publication lag of 12–18 months; the apparent flattening in the most recent periods does not reflect actual filing pace. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Multi-year growth led by H02J power-supply integration, with niche defence and EV clusters
The annual trend chart reveals a field that expanded sharply in 2021, has maintained moderate activity since, and carries a 29% recent-period growth rate. The technology composition chart shows H02J (power supply and grid systems) as the dominant branch by a wide margin.
Annual filing trend
Filing activity rose from moderate levels in 2017–2018, dipped in 2019–2020, then surged to a peak in 2021 before settling into a steady 2022–2025 range. The 2025 and 2026 bars are understated due to publication lag and should not be read as a real slowdown.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H02J (power supply and grid systems) dominates the branch mix, reflecting that module-level EDLC integration is predominantly framed as a power-management problem. H01G (capacitors) and B60L (electric vehicle propulsion) form a secondary tier, while F41H (armour and military defence) and E21B (drilling and wells) mark niche verticals.
↗ 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.
Integrated control and monitoring of ultracapacito…
Systems and methods for integrated control and monitoring of charging and cell balancing in a group of ultracapacitors. Monitoring and control circuitry can be configured for built-in monitoring feedback to the charger and the balancing circuits to dynamically improve performance, extend system lifetime, decrease charging time, increase available power… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Modular signal interface devices and related downh… | 97 |
| 2 | Flow ultracapacitor | 86 |
| 3 | Power supply and ultracapacitor based battery simu… | 82 |
| 4 | High power density jump starter | 74 |
| 5 | Inertial energy generator for supplying power to a… | 73 |
| 6 | Ultracapacitor and battery combination with electr… | 72 |
| 7 | Power supplies and ultracapacitor based battery si… | 65 |
| 8 | Systems and methods for power storage and manageme… | 54 |
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.
What the competitive structure means for R&D investment decisions
The combination of fragmented ownership, multi-sector application spread, and a growth-stage lifecycle creates both entry opportunities and the risk of overlooking niche incumbents in verticals such as defence and downhole drilling.
Growth stage with annual volume easing from a 2021 peak
The field is classified at the Growth stage: the recent three-year window sits well above the prior three-year window, yielding a 29% growth rate. However, annual filings have eased from the 2021 peak. New entrants and follow-on innovation are still actively shaping the claim landscape, making this a period where foundational positions remain acquirable.
Growth stageShallow hierarchy with no dominant gatekeeper
The top five filers hold roughly one-fifth of the hundred largest filers’ combined records, and the leading applicant (Ocado Innovation Ltd) holds only eleven patent records. This low concentration means no single party controls a blocking position across the full technology space, reducing freedom-to-operate risk for new entrants but also limiting the signalling value of any one player’s portfolio.
Low concentrationNo co-applicant pairings detected in the current corpus
The collaboration evidence is pending — no joint-filing relationships were identified in the current dataset. This absence of consortia or cross-institutional co-filing suggests the field has not yet coalesced around shared platform standards or pre-competitive R&D alliances, which may also reflect the early-to-mid growth stage dynamic.
Evidence pendingUS-led filing with meaningful China, EPO and India coverage
The United States is the lead jurisdiction, followed by China and Europe (EPO), with India representing a notable fourth market. WIPO PCT filings and secondary coverage in Japan, Canada, and South Korea indicate that several players are pursuing broad international protection. The India presence is higher than typical for industrial energy storage topics, likely reflecting the active academic and institutional filer base visible in the applicant ranking.
US-led, multi-regionGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
Co-filing pairs, ranked by the number of jointly-filed patent families.
Ocado Innovation leads on EV integration; Battelle Memorial Institute anchors the defence vertical
The two players at the top of the ranking occupy distinctly different technology routes, suggesting their portfolios are largely non-overlapping and the field’s apparent concentration overstates true competitive overlap.
Ocado Innovation Ltd
Ocado Innovation Ltd leads with eleven patent records, concentrated heavily in H02J power supply and grid systems alongside B60L electric vehicle propulsion — specifically sub-classes relating to EV energy storage and management. This combination suggests a focus on autonomous mobile robot or logistics vehicle power systems requiring ultracapacitor module integration. Momentum data does not flag a recent surge, indicating a steady rather than accelerating build.
patent records: 11Battelle Memorial Institute
Battelle Memorial Institute holds eight patent records, with its technology emphasis concentrated in F41H (armour and military defence) and H01G (capacitors), pointing to hardened or ruggedised EDLC pack designs for defence platforms. This is a niche vertical with limited commercial crossover, meaning Battelle’s position does not directly constrain civilian industrial entrants. No recent-period momentum data is flagged for Battelle in the evidence.
patent records: 8| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| FastCap Systems Corp | 2 | ▲ new entrant |
| Dresser LLC | 4 | ▲ new entrant |
Under-served adjacent branches in EV propulsion, power conversion, and conveying systems
Several IPC branches adjacent to the dominant H02J core show relatively low patent-record counts, suggesting areas where EDLC pack integration has been applied but not yet heavily patented. These are observations of relative sparsity, not validated commercial opportunities.
H02M · Power conversion (AC/DC)
H02M covers DC-DC converters, bidirectional converters, and inverter topologies — all directly relevant to how EDLC modules interface with the broader power bus. With only thirteen patent records in this branch, the intersection of EDLC pack integration with converter-level design is sparse relative to the dominant H02J framing. For teams working on hybrid energy storage architectures where converter control and capacitor pack design are co-optimised, this branch represents a technically plausible and relatively open area to establish claims.
Search this in Eureka →B65G · Conveying and material handling
B65G appears in ten patent records within the corpus — primarily tied to automated warehouse and logistics systems, consistent with Ocado Innovation’s presence. Beyond Ocado, this branch is sparsely populated relative to the scale of automated material-handling deployments globally. Industrial conveyor and sortation systems with regenerative braking or peak-shaving requirements are a plausible entry vector for EDLC pack integration, and the low record count suggests most IP in adjacent conveying systems has not yet been drafted with EDLC integration as the primary claim focus.
Search this in Eureka →How leading applicants differ across technology routes
Route coverage across the main technology branches in the current evidence set.
| Player | H02J 7 · Power supply & grid systems | H01G 11 · Capacitors | B60L 50 · Electric vehicle propulsion | H02M 3 · Power conversion (AC/DC etc.) | B60L 58 · Electric vehicle propulsion |
|---|---|---|---|---|---|
| Ocado Innovation Ltd | Strong · 11 | Absent | Strong · 10 | Absent | Strong · 10 |
| FastCap Systems Corp | Strong · 6 | Moderate · 3 | Absent | Absent | Absent |
| Unison Industries LLC | Strong · 8 | Absent | Absent | Absent | Absent |
| Battelle Memorial Institute | Absent | Strong · 8 | Absent | Absent | Absent |
| Maxwell Technologies Inc | Strong · 7 | Absent | Absent | Absent | Absent |
| Eaton Corporation | Strong · 5 | Absent | Absent | Absent | Absent |
Frequently asked questions
The current corpus contains 106 patent families in scope, spanning filings across the United States, China, Europe (EPO), India, WIPO PCT, Japan, Canada, South Korea, and other jurisdictions.
Ocado Innovation Ltd leads the applicant ranking with eleven patent records, ahead of Unison Industries LLC and Battelle Memorial Institute, each with eight patent records.
The field is in a Growth stage. The recent three-year window sits 29% above the prior three-year window on a multi-year basis. Annual volume has eased from a 2021 peak, and the most recent years are further understated by publication lag, so the apparent plateau should not be read as a real decline.
H02J (power supply and grid systems) is overwhelmingly dominant, reflecting that EDLC module integration is most commonly framed as a power-management and charging-system problem. H01G (capacitors) and B60L (electric vehicle propulsion) form the next significant tier.
The United States is the lead jurisdiction by patent-record count, followed by China and Europe (EPO). India ranks fourth, reflecting an active academic and institutional filer base. WIPO PCT coverage suggests several applicants are pursuing broad international protection strategies.
No co-applicant collaboration pairings were detected in the current corpus. The absence of joint filings suggests the field has not yet formed pre-competitive R&D alliances or consortium-based IP strategies, which is consistent with a fragmented, multi-sector growth-stage landscape.
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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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