Wireless Power Transfer for Building Energy Patent Landscape
The wireless power transfer for building energy patent space is extremely narrow, with only 5 patent families on record and Samsung Electronics holding a commanding position. Activity peaked in 2017 and has since eased substantially, indicating a field that remains technically nascent and competitively thin.
Samsung Electronics dominates a very small, highly concentrated field
Samsung Electronics Co Ltd leads the applicant ranking with 4 patent families, followed distantly by Mailam Engineering College with 1 patent family. Together these two applicants account for the entirety of the top-ranked filers in scope.
Concentration is absolute: the top five filers account for 100% of the combined output of the hundred largest filers, and the tier gap between the leader and all others is four-to-one. This degree of concentration in a field of only 5 patent families signals that the space has not attracted meaningful broad industry engagement.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Samsung Electronics Co Ltd | 4 | |
| 2 | Mailam Engineering College | 1 |
Samsung’s dominant position reflects focused early-stage exploration rather than an entrenched moat — the small absolute volume means that even modest new filing activity by a new entrant could shift the competitive balance rapidly.
The most recent filing periods are subject to publication lag of approximately 18–24 months, so the apparent absence of recent activity should be interpreted cautiously rather than as a definitive indicator of abandonment.
Sparse, episodic filing history dominated by a single IPC class
The filing trend reveals a thin and intermittent history, while the technology composition is almost entirely concentrated in power supply and grid systems — with only a marginal signal from electric vehicle propulsion.
Annual filing trend
Filings peaked at 2 families in 2017, fell to zero through 2019, recovered briefly to 2 families in 2020, and then returned to zero through 2024, with a single family appearing in 2025. The pattern is episodic rather than directional, and the recent-period absence is consistent with publication lag rather than confirmed cessation.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H02J (Power supply and grid systems) accounts for all 5 patent records in the corpus, establishing it as the sole substantive technical route. B60L (Electric vehicle propulsion) appears with 1 record, contributed by Mailam Engineering College, suggesting an exploratory crossover application rather than a distinct parallel route.
↗ 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.
Voltage generating method and apparatus
Provided are a voltage generating method and apparatus. A wireless power device includes a boosting circuit configured to generate a high voltage, and a switch arrangement circuit configured to selectively transmit energy to the boosting circuit, for the generating of the high voltage, using an inductor included in a resonator and in response to a build-up… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Voltage generating method and apparatus | 1 |
| 2 | Voltage generating method and apparatus | 1 |
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 decision-making
A 5-family corpus with one dominant filer, episodic filing history, and a single dominant IPC class provides a clear but cautionary picture: the space is technically real but commercially underdeveloped.
Decline stage — annual volume has eased from its 2017 peak
The lifecycle evidence places this field in decline, with annual filings easing back from the 2017 peak. The small total volume and multi-year gaps between filings suggest that mainstream R&D investment in this specific intersection — wireless power transfer applied to building energy infrastructure — has not materialized. A new entrant would be entering a field with minimal prior art friction but also limited proven commercial signal.
Lifecycle: DeclineNear-total concentration in a single incumbent
Samsung Electronics holds 4 of the 5 patent families in scope, giving it an 80% share of an already minimal corpus. The top five filers collectively account for 100% of the output among the hundred largest filers, which in this case reduces to just two applicants. Any organization entering this space would face Samsung’s existing position in H02J50 and H02J7 but would not be navigating a crowded prior-art landscape.
Concentration: ExtremeNo co-applicant activity observed
Evidence pending: no collaboration relationships between co-applicants are recorded in the corpus. Given the extremely small patent population and the presence of only two filers — one a large corporate entity and one an engineering college — the absence of co-filing is expected. Future academic-industry partnerships could serve as an early signal of renewed field interest.
Collaboration: None observedUS-centric filing with a single India record
Four of the five patent records are filed in the United States, with one filed in India by Mailam Engineering College. The absence of filings in other major innovation jurisdictions — Europe, China, Japan, or Korea — reinforces the nascent and geographically narrow character of this space. Organizations monitoring building-energy wireless power globally should note that IP coverage outside the US is currently uncontested.
Geography: US + India onlyGo 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.
Frequently asked questions
The corpus contains 5 patent families. This is an extremely small population, indicating the specific intersection of wireless power transfer and building energy applications has attracted very limited patent activity to date.
Samsung Electronics Co Ltd leads with 4 patent families, all focused on H02J50 and H02J7 — wireless power circuits and battery charging systems. Mailam Engineering College is the only other filer, with 1 patent family.
The evidence places the field in a decline stage. Annual filings peaked at 2 families in 2017, fell back repeatedly to zero, and have not recovered to the prior peak level. This reflects a field that has not gained sustained R&D momentum.
The United States accounts for 4 of the 5 patent records, with India accounting for 1. No coverage is recorded in Europe, China, Japan, or South Korea, leaving those markets currently uncontested from a patent perspective.
H02J (Power supply and grid systems) is the dominant class, appearing across all 5 patent records. B60L (Electric vehicle propulsion) appears in 1 record, contributed by Mailam Engineering College, suggesting a vehicle-to-building crossover research angle.
No co-applicant collaboration is recorded in the corpus. The two filers — Samsung Electronics and Mailam Engineering College — have each filed independently, with no joint applications observed.
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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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