Wireless Power Transfer for Industrial Plants Patent Landscape
The wireless power transfer for industrial plants patent space is small but growing, with 22 patent families in scope and a 38% recent-window growth rate; Auckland UniServices leads by patent record count, followed closely by SigmaSense. Activity is highly concentrated among a handful of specialist and portfolio players, with the United States dominating filing jurisdiction.
Auckland UniServices leads a tightly held, emerging field
Auckland UniServices Ltd holds the top position among ranked applicants, followed by SigmaSense LLC and Appleton Group LLC. The field is small in absolute terms, reflecting its nascent commercial development in industrial settings.
The top five filers account for 62% of the combined patent records held by the hundred largest filers, indicating a strongly concentrated competitive tier. A meaningful gap separates the top three from the remaining applicants, most of whom hold only one or two patent records each.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Auckland UniServices Ltd | 7 | |
| 2 | SigmaSense LLC | 6 | |
| 3 | Appleton Group LLC | 4 | |
| 4 | LG Innotek Co Ltd | 2 | |
| 5 | SOBOTA RODRIGUEZ CRISTIAN ANDRES | 2 | |
| 6 | Strong Force EE Portfolio 2022 LLC | 2 | |
| 7 | CHAUDHARI MADHURI AVINASH | 2 | |
| 8 | Hamilton Sundstrand Corporation | 1 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 9 | Ecole Centrale School of Engineering, Mahindra University | 1 | |
| 10 | Strong Force TP Portfolio 2022 LLC | 1 | |
| 11 | RTX Corporation | 1 | |
| 12 | BOYS JOHN TALBOT | 1 | |
| 13 | SOBOTA RODRIGUEZ CRISTIAN A | 1 | |
| 14 | GM Global Technology Operations LLC | 1 | |
| 15 | WiTricity AI Tech LLC | 1 | |
| 16 | Eaton Intelligent Power Ltd | 1 |
The leaders’ positions signal that foundational intellectual property in power control, contactless charging, and grid integration is being locked up early, primarily by university-linked entities and specialist technology companies rather than large industrial incumbents.
Filings from approximately the last 18–24 months are subject to publication lag and will likely increase as pending applications publish; current counts for 2024–2025 should be read as provisional. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Annual filing activity is rising, with power supply and control systems dominating the technology mix
The filing trend chart reveals an uneven but upward trajectory since 2018, with a notable spike in 2020 and another peak in 2024. The technology composition chart shows H02J (power supply and grid systems) as the dominant class, with meaningful secondary coverage in power conversion and control systems.
Annual filing trend
Filing volumes spiked in 2020 and again in 2024, consistent with a growth-stage field experiencing episodic bursts of innovation. The near-zero values for 2025 and 2026 reflect publication lag rather than a real decline, and should not be interpreted as a slowdown.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H02J (power supply and grid systems) accounts for the largest share of IPC classifications, reflecting core wireless power transfer circuitry. H02M (power conversion) and G05B (control and regulating systems) form the next tier, while branches such as G06N (AI models), H04L (digital transmission), and B60L (electric vehicle propulsion) appear at lower densities, pointing to adjacent application spaces.
↗ 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.
Wireless power transfer adaptation and communicati…
A device operative to transfer power wirelessly includes a drive-sense circuit (DSC), memory that stores operational instructions, and processing module(s). The DSC generates a drive signal based on a reference signal and provides the drive signal to a first coil via a single line and via a resonating capacitor, and simultaneously senses the drive signal… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Power control | 41 |
| 2 | Contactless charger and battery management | 20 |
| 3 | Power control | 18 |
| 4 | Wireless power transfer with in-line sensing and c… | 15 |
| 5 | Wireless power transmission apparatus for wireless… | 15 |
| 6 | Contactless charger and battery management | 10 |
| 7 | Wireless power transmission apparatus for wireless… | 5 |
| 8 | Articulating roof assemblies for electrical genera… | 4 |
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 industrial R&D investment
The combination of high concentration, growth-stage dynamics, and a US-dominant jurisdiction profile creates a specific set of conditions for new entrants and incumbents deciding where to direct R&D resources.
Growth stage: annual filings still rising
The lifecycle stage is confirmed as Growth, with annual filings still rising and a 38% recent-window growth rate. The 2024 peak has not yet eased, meaning the window for establishing foundational positions remains open. New entrants recorded in the momentum data — including Appleton Group and Strong Force EE Portfolio 2022 — confirm fresh competitive entry is still occurring.
Growth stageTop-heavy field with a long tail of solo filers
The top five filers hold 62% of patent records among the hundred largest filers, and most applicants outside the top three hold only one or two records. This concentration means a small number of players control the primary claim landscape in power control and contactless charging. Challengers entering now face a relatively well-defended core but a largely open adjacent space.
High concentrationOne confirmed co-filing relationship: Boys John Talbot and Auckland UniServices
Evidence shows a single co-applicant relationship between inventor Boys John Talbot and Auckland UniServices Ltd. This inventor-institution pairing is consistent with a university-led research model where foundational IP is generated within academic programs and then commercialized through a technology transfer office. Broader industry collaboration networks have not yet materialized in the evidence.
Limited co-filingUnited States is the primary filing jurisdiction by a wide margin
The United States leads with 18 patent records, followed by Europe (EPO) and WIPO (PCT) at 5 and 4 records respectively, with India at 4 and New Zealand at 2. The PCT route is underutilized relative to direct US filing, suggesting most applicants are prioritizing US market protection first. The Indian filings, likely linked to the Mahindra University group, signal emerging interest from South Asian industrial research institutions.
US-dominantGo 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.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| BOYS JOHN TALBOT | Auckland UniServices Ltd | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Auckland UniServices and SigmaSense define the leading tier by distinct technology routes
The top two filers diverge sharply in focus: Auckland UniServices concentrates on foundational power supply and grid integration, while SigmaSense emphasizes power supply combined with control and regulating systems. Both hold meaningful records counts in a corpus of only 22 patent families.
Auckland UniServices Ltd
Auckland UniServices holds 7 patent records, the highest count among all ranked applicants. Its technology focus spans H02J 5 (power supply), H02M 7 (power conversion), and H02J 3 (grid systems), reflecting a broad foundational position in wireless power transfer circuitry. The collaboration link with inventor Boys John Talbot indicates an active university-inventor pipeline. Momentum data does not flag Auckland UniServices as a new entrant, consistent with its established position.
patent records: 7SigmaSense LLC
SigmaSense LLC holds 6 patent records, placing it immediately behind Auckland UniServices. Its portfolio is concentrated in H02J 7 (power supply and grid systems), G05B 19 (control and regulating systems), and H02J 50 (wireless power supply), suggesting a differentiated focus on sensing and control intelligence layered onto wireless power infrastructure. SigmaSense is not flagged as a new entrant in the momentum data, indicating a prior filing history.
patent records: 6| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Appleton Group LLC | 2 | ▲ new entrant |
| Strong Force EE Portfolio 2022 LLC | 1 | ▲ new entrant |
| DR M A CHAUDHARI | 2 | ▲ new entrant |
Under-served branches adjacent to the dominant power supply core
Several IPC branches appear at lower densities relative to the dominant H02J core. These represent areas where patent coverage is sparse; they are observations of relative sparsity and are presented as candidate areas for technical exploration rather than validated commercial opportunities.
G06N · AI-driven power transfer optimization
G06N (computing based on AI models) accounts for only 4 patent records and 5% of IPC classifications in this corpus. Given that industrial wireless power systems must manage dynamic load conditions, interference, and efficiency losses, AI-based optimization of power routing and coil alignment is a plausible and technically adjacent direction. Entry could be framed as a cross-claim over existing H02J foundations combined with G06N methods claims.
Search this in Eureka →H04L · Secure digital communication for wireless power systems
H04L (digital information transmission) appears in 4 patent records, reflecting early-stage treatment of communication protocols embedded in wireless power transfer systems. Industrial environments require secure, low-latency control signaling alongside power delivery; the sparse coverage here suggests that protocol design, authentication, and telemetry integration for industrial WPT remain largely unclaimed territory.
Search this in Eureka →How leading applicants differ by technology route
Route coverage across the main technology branches in the current evidence set.
| Player | H02J 7 · Power supply & grid systems | H02J 50 · Power supply & grid systems | H02J 3 · Power supply & grid systems | H02M 7 · Power conversion (AC/DC etc.) | H02M 1 · Power conversion (AC/DC etc.) |
|---|---|---|---|---|---|
| SigmaSense LLC | Strong · 6 | Strong · 5 | Absent | Absent | Absent |
| Auckland UniServices Ltd | Absent | Absent | Strong · 3 | Strong · 4 | Moderate · 2 |
| Appleton Group LLC | Strong · 4 | Absent | Absent | Absent | Absent |
| SOBOTA RODRIGUEZ CRISTIAN ANDRES | Strong · 2 | Strong · 2 | Absent | Absent | Absent |
| DR M A CHAUDHARI | Absent | Absent | Absent | Strong · 2 | Strong · 2 |
| LG Innotek Co Ltd | Absent | Strong · 2 | Absent | Strong · 2 | Absent |
Frequently asked questions
The corpus in scope contains 22 patent families. This is a relatively small and specialized body of IP, consistent with a technology that is still in the growth stage of adoption in industrial settings.
Auckland UniServices Ltd leads with 7 patent records, followed by SigmaSense LLC with 6 and Appleton Group LLC with 4, based on the applicant ranking among the top 100 filers.
The top five filers account for 62% of the combined patent records held by the hundred largest filers, indicating a high degree of concentration. Most applicants outside the top three hold only one or two patent records.
The United States is the dominant jurisdiction with 18 patent records. Europe (EPO) and WIPO (PCT) each have 4–5 records, India has 4, and New Zealand has 2, reflecting the geographic spread of key research groups.
Annual filing activity has grown over the multi-year window, with notable peaks in 2020 and 2024. The near-zero figures for 2025 and 2026 are an artifact of publication lag — applications filed recently have not yet published — and do not represent a real slowdown.
The sparsest branches relative to the dominant H02J core include G06N (AI models, 4 records), H04L (digital information transmission, 4 records), H05B (electric heating and lighting circuits, 4 records), G05B (control and regulating systems, 6 records), and B60L (electric vehicle propulsion, 5 records). These represent areas of relatively low patent density adjacent to the main wireless power transfer claim space.
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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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