Wind-Turbine Drivetrain Patents: Who Leads, Where the Gaps Are 2026
- 72.5% concentration. The top five assignees together account for 502 of 692 records in scope — a field with a dominant core rather than a broad field of equal-sized filers.
- Filing has pulled back sharply. From 50 records in 2021 to 13 in 2024, a -74% change over that span, though 2025-2026 figures are still filling in under the usual 18-month publication lag.
- Gearing carries the second-heaviest claim load. F16H gearing and transmission classes appear in 12.6% of records, well behind the 77.9% carried by F03D wind-motor classes but far ahead of every other subclass.
Filing growth compares 2021 (50 records) with 2024 (13) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 692 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This landscape maps 692 published patent records filed against a search built around wind turbine drivetrains, gearboxes and the control signals that govern them — wind speed, rotor torque, blade pitch and turbine control. The scope spans 2015 to the 2026 data cut-off, covering everything from mechanical gearbox and bearing design through to the control-loop patents that manage torque and pitch in real time.
Records are drawn from major receiving offices including the United States, the European Patent Office, WIPO's PCT system, India, Austria and Germany, giving a cross-jurisdictional view of where drivetrain innovation is being protected rather than just where it is being built.
Filing trends and technology composition
Two views matter here: how filing volume has moved year over year, and which parts of the drivetrain stack carry the densest claim coverage.
Filing trend, 2017-2026
Filings ran near a plateau from 2017 (57 records) through the 2018 peak of 58, then declined through the period to 2021's 50 records and down to 13 by 2024 — a -74% move over that three-year span. 2025 and 2026 figures will keep revising upward as publication catches up with filing dates, so the most recent two years understate real activity.
IPC subclass composition
F03D (wind motors) touches 77.9% of the 692 records, which is expected given the search scope. The more informative split sits below it: F16H gearing and transmissions at 12.6%, H02P motor and generator control at 5.9%, G05B control and regulating systems at 5.1%, and F16C shafts, bearings and couplings at 4.9% — a rough map of where mechanical claims give way to control-system claims.
Shares are the percentage of the 692 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Wind-Turbine Drivetrains Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about wind-turbine drivetrains patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records in this space
US20200182224A1 — Predicting wind turbine noise
A method of predicting tonal noise produced by a wind turbine, using vibration data captured from sensors positioned about a drivetrain under test-rig conditions and correlated against a second set of vibration data from a drivetrain in situ, together with associated noise data, to forecast tonal noise output.Filed by Vestas Wind Systems A/S, published 2020-06-11.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20120025526A1 | System and method for monitoring wind turbine gearbox health and performance | 252 |
| 2 | US20110089693A1 | Wind energy power conversion system reducing gearbox stress and improving power stability | 191 |
| 3 | US4703189A | Torque control for a variable speed wind turbine | 167 |
| 4 | US20160033580A1 | Detecting Faults in Turbine Generators | 132 |
| 5 | WO2008131766A2 | A wind turbine, a method for controlling the temperature of fluid flowing in a first temperature control syst… | 80 |
| 6 | US20120025529A1 | System and Methods for Monitoring Oil Conditions of a Wind Turbine Gearbox | 61 |
| 7 | US20100034653A1 | Wind Turbine, A Method For Controlling The Temperature Of Fluid Flowing In A First Temperature Control System… | 58 |
| 8 | US11220999B1 | Deep hybrid convolutional neural network for fault diagnosis of wind turbine gearboxes | 51 |
| 9 | US20100132738A1 | Method and Apparatus for Cleaning and De-Icing Wind Turbine Rotor Blades | 50 |
| 10 | US20100314873A1 | Auxiliary drive/brake system for a wind turbine | 47 |
Citation counts reflect influence within this searched corpus and skew toward older filings — treat them as a signal of what shaped the field, not of what matters most today.
Each row carries its publication number; clicking a row searches Eureka by that number.
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The concentration and trend figures point to a field where a handful of players built a wide claim base early, and where recent-year filing counts need reading with the publication lag in mind.
Five assignees hold most of the field
The top five assignees combine for 502 of the 692 records in scope, and the top ten reach 80.8%. That leaves a long tail of single- or few-filing entrants competing for the remaining share, which makes freedom-to-operate checks against the leaders the first step for any new filer.
Volume has pulled back from its 2018 peak
After a 2018 peak of 58 records, filing volume declined to 50 in 2021 and 13 by 2024. Because publication lags filing by roughly 18 months, 2025-2026 counts are not yet complete and should not be read as a continuation of decline until later data confirms it.
Gearing is the second-heaviest claim area
Behind the near-universal F03D wind-motor classification, F16H gearing and transmission claims appear in 12.6% of records — more than double the next largest subclass, H02P control of motors and generators at 5.9%. That gap marks gearing as the mechanical sub-domain most worth a prior-art search before filing.
Gearbox health monitoring anchors the citation graph
The most-cited record in scope concerns monitoring wind turbine gearbox health and performance, with 252 citations, ahead of a power-conversion patent at 191 and a 1987 torque-control patent at 167. High citation counts here mark early, foundational filings rather than current state of the art.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to wind-turbine drivetrains patent landscape, with the prior art for and against each one.
Who is filing, and where momentum has gone quiet
A small set of assignees built most of the claim base in this field, and the most recent full year shows that momentum cooling across the leaders rather than shifting to a new entrant.
One assignee dominates the ranking
The leading assignee holds 325 of the 692 records in scope, far ahead of the fifth-place holder at 19 and the tenth-place holder at 10. That gap is the clearest sign that any freedom-to-operate review in this space should start with the leader's portfolio.
Recent-year filings have gone quiet at the top
Several of the most active historical assignees, including the field leader and multiple general-electric entities, show zero filings in the latest tracked year, with year-over-year changes as steep as -100% where prior-year activity existed. Given the publication lag, this likely reflects incomplete recent data rather than an actual exit from the field.
Co-filing is limited but concentrated
Only 10 co-assignee pairs appear across the dataset, and the strongest of these link an energy operator with a diagnostics specialist, and a turbine manufacturer with individual named inventors. This points to a field where most drivetrain IP is filed solo rather than through joint ventures.
| Assignee | Recent year | YoY |
|---|---|---|
| Vestas Wind Systems A/S | 0 | -100% |
| General Electric Company | 0 | — |
| GE Renewables Espana S.L. | 0 | -100% |
| Ricardo UK Ltd | 0 | — |
| RICHARDS WILLIAM R | 0 | — |
| United Technologies Corporation (RTX Corp) | 0 | — |
| Acciona Energia S.A. | 0 | — |
| SENTIENT SCIENCE CORP | 0 | — |
Where to take this next
The dataset points to a mature core with specific gaps still open. The next steps depend on whether you are filing, licensing or scoping a design-around.
Run a freedom-to-operate check against the leader
With 72.5% of records held by five assignees, any new drivetrain filing should start with a clearance search against the field leader's portfolio before drafting claims.
Search assignee portfolios in EurekaMap the gearing sub-claims before filing
F16H gearing and transmission claims sit at 12.6% of records — dense enough to require a targeted prior-art pull rather than a general drivetrain search.
Pull IPC-level prior art in EurekaRevisit trend data after the lag closes
2025-2026 filing counts are incomplete under the standard 18-month publication lag; treat any decline narrative as provisional until later data confirms it.
Track filing trends in EurekaCommon questions about wind-turbine drivetrain patents
One assignee holds the largest single share of the 692 records in scope, with 325 records against a fifth-place holder at 19 and a tenth-place holder at 10. The top five assignees combined account for 72.5% of all records, and the top ten reach 80.8%, so the field is heavily concentrated at the top with a long tail of smaller filers below it. Any competitive review of this space should treat the leading handful of assignees as the baseline to check against, not the full ranked list of 100 companies.
Filing volume peaked in 2018 at 58 records and declined to 13 by 2024, a -74% change from the 50 records filed in 2021. Because patent publication lags filing by roughly 18 months, the 2025 and 2026 figures in any dataset are still incomplete and should not be read as confirming a continued decline. 2024 is the most recent year that can reasonably be treated as a complete picture.
Wind motor classifications (IPC F03D) appear in 77.9% of the 692 records, which follows directly from the search scope. Below that, gearing and transmission claims (F16H) appear in 12.6% of records, well ahead of motor and generator control (H02P) at 5.9% and control/regulating systems (G05B) at 5.1%. That ordering suggests gearing mechanics carry more distinct claim density than the control-software layer built on top of them.
The most-cited record in this dataset, US20120025526A1, concerns monitoring wind turbine gearbox health and performance and carries 252 citations within this corpus. It is followed by a power-conversion patent addressing gearbox stress at 191 citations and a 1987 torque-control patent at 167. High citation counts in an older record reflect its foundational role in the field rather than current commercial relevance, so they should be read as historical influence, not a ranking of present-day importance.
Filing density is notably thinner in areas adjacent to the core gearbox and control claims, including predictive lubrication scheduling, acoustic-signature-based fault classification, and torque-sharing control across multiple turbines. These sit next to heavily claimed subclasses like F16H gearing and F03D wind motors but have not attracted the same volume of filings. A new entrant looking to avoid the densest prior art would do better to start drafting claims in these adjacent branches rather than the core mechanical gearbox space.
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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.
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.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.