Vertical-Axis Wind Turbine for Building Energy Patent Landscape
Vertical-Axis Wind Turbine for Building Energy Patent Landscape in 2026
The patent corpus for vertical-axis wind turbines integrated into building energy systems is small and highly concentrated, with activity peaking sharply in 2019 and subsequently easing. Europe (EPO) leads in filing volume, and the field is dominated by a handful of individual inventors and academic institutions rather than large industrial players.
A small, concentrated field led by individual inventors and academic institutions
The corpus spans 15 patent families, with the leading filer — Kaufman Jay Stephen — holding 1 patent family, matched by Chandigarh University and Vellore Institute of Technology Chennai. The top five filers account for 100% of the hundred largest filers’ combined total, signaling extreme concentration in a niche space.
There is no meaningful tier gap between the top applicants; all ranked entities hold the same count. This flat ranking structure indicates that no single organization has built a dominant portfolio, leaving the field open to consolidation by any entrant willing to file systematically.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Kaufman Jay Stephen | 1 | |
| 2 | Chandigarh University | 1 | |
| 3 | Vellore Institute of Technology Chennai | 1 |
The presence of academic institutions — Chandigarh University and Vellore Institute of Technology Chennai — among the top applicants suggests that fundamental research rather than commercial deployment is currently driving IP creation in this space.
The most recent filing periods are subject to publication lag and may undercount activity; the apparent absence of filings in 2022–2024 should be interpreted with caution. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A sharp 2019 peak in filings with a dominant wind-motor technology core
Annual filing volume spiked in 2019 then fell back, while the technology mix is heavily anchored in wind-motor classifications with minor representation in grid integration and solar.
Annual filing trend
Annual filings rose to a clear peak in 2019, then contracted sharply. Filings recorded from 2022 onward appear near zero, but the most recent 18–24 months remain subject to publication lag and should not yet be treated as confirmed absence of activity.
↗ Hover for values · click a bar to ask EurekaTechnology composition
F03D (wind motors) dominates the technology mix, reflecting the core turbine-hardware focus of this corpus. H02J (power supply and grid systems) and H02S (photovoltaic/solar) appear as secondary branches, indicating some degree of hybrid-energy integration. F21S (non-portable lighting) and H02K (electric motors and generators) each appear at very low levels, marking them as sparse adjacent branches.
↗ 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.
Vortex acceleration wind energy tower
Compounded, Interactive, Vortex Acceleration Recovery (CIVAR) Energy Tower, offering multiple occupancies, is a building creating its own energy by using the physical design of the building and its components. The energy is generated by using Wind, Solar, Geothermal, and Incineration heat. The shape of the building structure is designed for full wind… (excerpt from the patent abstract)
Open this patent in Eureka →| # | Patent | Citations |
|---|---|---|
| 1 | Vortex acceleration wind energy tower | 6 |
| 2 | Building With Energy Recovery and Storage Systems | 6 |
| 3 | Vortex acceleration wind energy tower | 2 |
| 4 | Vortex acceleration wind energy tower | 2 |
| 5 | Vortex acceleration wind energy tower | 2 |
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 structure means for R&D investment decisions
The combination of a post-peak lifecycle, extreme applicant concentration, minimal collaboration, and multi-jurisdictional but thin coverage points to a field that is technically active but commercially immature.
Post-peak: activity has eased from its 2019 high
The lifecycle stage is Decline, with annual filings easing back from the 2019 peak. This does not necessarily indicate that the technology is obsolete; for a corpus of only 15 patent families, a single project or research group can move the annual count materially. New entrants should treat the post-peak dip as a potential white space rather than a market exit signal.
Post-peak · 2019Maximum concentration among the top hundred filers
The top five filers account for 100% of the hundred largest filers’ combined total, confirming that no single organization commands a dominant share. All ranked applicants hold equal counts, meaning there is no established portfolio leader to design around. An organization filing even a modest cluster of patents could rapidly establish a leading position.
Highly concentratedNo co-applicant activity detected in this corpus
Evidence pending — the collaboration data shows no recorded co-applicant filings within this corpus. The absence of joint filings may reflect the early-stage, inventor-led nature of the field, or simply the small sample size. University-industry partnerships, which are common in adjacent clean-energy spaces, have not yet materialized here based on available evidence.
No co-filings detectedEurope leads, with India and North America as secondary jurisdictions
Europe (EPO) holds the highest patent record count, followed by India and the United States with equal representation. Canada, Australia, Germany, and WIPO (PCT) each appear with smaller counts. The PCT route has minimal use, suggesting that most filers are not yet pursuing broad multi-jurisdictional protection — a gap that could be exploited by an entrant seeking global freedom-to-operate.
EPO leadsGo 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.
Individual inventors and academic institutions share the top tier
No corporate incumbent dominates this field. The top-ranked filers are an individual inventor and two engineering universities, each holding 1 patent family, with the most technically broad portfolio belonging to Mizerit Branko based on IPC subclass coverage.
Kaufman Jay Stephen
Kaufman Jay Stephen holds 1 patent family focused on wind-motor integration with grid systems (H02J) and electric generators (H02K), indicating a system-level rather than turbine-hardware-only approach. Applicant momentum data is not available for this filer in the current evidence set.
families: 1Mizerit Branko
Mizerit Branko shows the broadest IPC subclass coverage among all applicants, with filings spanning F03D 3 (vertical-axis wind motors), F03D 9 (wind motor integration), and F03D 1 (horizontal-axis variants), suggesting a comprehensive turbine-design portfolio. Applicant momentum data is not available in the current evidence set.
families: 1Under-served branches adjacent to the core wind-motor space
Two IPC branches appear at very low representation within the corpus, indicating areas where the intersection with vertical-axis wind turbines for buildings is technically plausible but patent activity is sparse.
F21S · Non-portable lighting devices
This branch is represented by only 1 patent record, accounting for approximately 4% of the IPC distribution. The intersection with building-integrated VAWTs is technically plausible — turbine-integrated façade lighting or wind-powered illumination systems could serve off-grid or net-zero building requirements. Activity is too sparse to confirm a validated opportunity, but the low filing density means an entrant faces minimal incumbent blocking.
Search this in Eureka →H02K · Electric motors & generators
H02K also appears with only 1 patent record and approximately 4% share, despite being a natural technical complement to wind-turbine systems. The sparse coverage suggests that generator design optimized specifically for low-wind, built-environment VAWTs — where rotor speed and load profiles differ from utility-scale turbines — remains largely unaddressed in this corpus. This is an observation of relative sparsity; technical validation would require broader prior-art search.
Search this in Eureka →How leading filers differ by technology route
Strength of each leader across the main technology routes.
| Player | F03D 3 · Wind motors (wind turbines) | F03D 9 · Wind motors (wind turbines) | H02J 3 · Power supply & grid systems | H02S 10 · Photovoltaic / solar power generation | F03D 1 · Wind motors (wind turbines) |
|---|---|---|---|---|---|
| Chandigarh University | Strong · 1 | Strong · 1 | Strong · 1 | Strong · 1 | Absent |
| Vellore Institute of Technology Chennai | Strong · 1 | Strong · 1 | Absent | Absent | Absent |
| Kaufman Jay Stephen | Absent | Strong · 1 | Strong · 1 | Absent | Absent |
Frequently asked questions
The current corpus contains 15 patent families. This is a small field, and the low total reflects the niche intersection of VAWT technology with built-environment energy applications.
The top-ranked applicants each hold 1 patent family: Kaufman Jay Stephen, Chandigarh University, and Vellore Institute of Technology Chennai. Mizerit Branko, while not listed in the numeric ranking at the same level, shows the broadest IPC subclass coverage based on the applicant technology data.
Europe (EPO) leads by patent record count, followed by India and the United States. Canada, Australia, Germany, and WIPO (PCT) also appear but with lower counts. The limited use of the PCT route suggests that global protection strategies are not yet common in this field.
The field is classified as Decline, with annual filings easing back from a peak in 2019. Given the very small corpus size, this stage designation should be interpreted carefully — a single new project could meaningfully shift the trend.
F03D (wind motors) is the dominant class. H02J (power supply and grid systems) and H02S (photovoltaic/solar power generation) appear as secondary branches, with F21S (non-portable lighting) and H02K (electric motors and generators) each represented at very low levels.
No co-applicant filings are recorded in the available evidence. The field appears to be driven by individual inventors and academic institutions acting independently, with no documented university-industry or cross-institutional partnerships.
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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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