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Run your analysis now →Filing growth compares 2021 (220 records) with 2024 (172) — 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 2,346 records in scope (CR5), not by the ranked leaders only.
Floating offshore wind sits at the intersection of two mature engineering disciplines: wind turbine control and marine structural design. The search set behind this page — 2,346 published records filed between 2015 and the current data cut-off — captures both halves, from blade pitch and rotor torque control down to hull stabilisation and mooring line arrangement. That dual character shows up directly in the technology composition: F03D (wind motors) and B63B (ships and marine vessels) are the two largest IPC subclasses by a wide margin over everything else.
Filing activity rose steadily through the late 2010s, peaked in 2022, and has since eased from that high — a pattern consistent with an industry that moved from demonstration projects toward pre-commercial arrays and is now digesting a first wave of core claims. Because publication trails filing by roughly 18 months, the most recent one or two years in any chart will always look thinner than they eventually turn out to be; the reliable read on direction stops at 2024.
Two views of the same 2,346-record set: how filing volume has moved year over year, and which IPC subclasses carry the claim density.
Filings climbed from 143 in 2017 to a peak of 253 in 2022, then eased to 172 by 2024 (-22% from 2021's 220) — a genuine pullback from the peak, but 2025 and 2026 figures are still filling in under the usual publication lag and should not be read as the field slowing further.
F03D (wind motors) touches 69.5% of the 2,346 records and B63B (marine vessels) 40.3%, confirming floating wind patents are as much about platform engineering as about turbine control; F03B, H04B, H04W, E02B, H01Q and H02G each cover a single-digit-to-low-teens share, marking narrower but still active fronts in hydraulics, communications and cabling.
Shares are the percentage of the 2,346 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
This page is one run against one query. Ask Eureka your own question about floating offshore wind patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaA motion controller for a floating wind turbine including a number of rotor blades is provided. The motion controller is arranged to adjust the blade pitch of each rotor blade when the floating wind turbine is operating in winds below the rated wind speed so as to create a net force that damps a surge motion of the floating wind turbine. Also provided is a method of damping the motion of a floating wind turbine and a wind turbine having such a motion controller.Filed by Equinor Energy AS, published 2025-06-17 as US12331723B2 — illustrates how control claims now target platform motion damping rather than turbine output alone.


| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20110037264A1 | Column-stabilized offshore platform with water-entrapment plates and asymmetric mooring system for support of… | 228 |
| 2 | WO2009131826A2 | Column-stabilized offshore platform with water-entrapment plates and asymmetric mooring system for support of… | 202 |
| 3 | US20180041270A1 | Beamformer for end-to-end beamforming communications system | 136 |
| 4 | US20110074155A1 | Floating offshore wind farm, a floating offshore wind turbine and a method for positioning a floating offshor… | 115 |
| 5 | US8471396B2 | Column-stabilized offshore platform with water-entrapment plates and asymmetric mooring system for support of… | 115 |
| 6 | WO2020167137A1 | Wind energy power plant and method of construction | 103 |
| 7 | US20100219645A1 | Power generation assemblies and apparatus | 100 |
| 8 | WO2017124004A1 | Techniques for employing access node clusters in end-to-end beamforming | 98 |
| 9 | US7293960B2 | Power generation assemblies, and apparatus for use therewith | 95 |
| 10 | US20110148115A1 | Deep offshore floating wind turbine and method of deep offshore floating wind turbine assembly, transportatio… | 89 |
Citation counts reward older, foundational filings and should be read as a signal of influence on the field, not of current commercial relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
When you want the answer in the next five minutes.
The agent works the prompt against patents and technical literature, citing every source.
Run your analysis now →When it has to run inside your own pipeline.
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Browse MCP servers →Three findings that should shape where a new application gets drafted and where it competes with dense prior art.
The top 5 assignees hold 693 of the 2,346 records in scope, and the top 10 extend that to 39.2% (920 records). That is a genuine lead position rather than a crowded field of equals, meaning a new entrant is filing against a small number of well-established portfolios rather than hundreds of scattered competitors.
After climbing from 143 records in 2017 to a peak of 253 in 2022, filing volume fell to 172 by 2024. That is a real pullback in a technology that had a sharp run-up, though it says nothing about whether the pullback continues — 2025 and 2026 figures are still incomplete under the normal publication lag.
F03D wind-motor claims appear on 69.5% of records, but B63B marine-vessel claims are close behind on 40.3% — far ahead of the next largest class. A drafting strategy that only reads turbine control art and ignores marine hull and mooring prior art is reading half the relevant field.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to floating offshore wind patent landscape, with the prior art for and against each one.
| Assignee | Co-assignee | Shared families |
|---|---|---|
| Hitachi, Ltd. | Toda Corporation | 18 |
| Hitachi, Ltd. | Kyoto University | 18 |
| Hywind AS | SKAARE BJRN | 4 |
| University of Maine | Alliance for Sustainable Energy, LLC | 3 |
| Principle Power Inc | RODDIER DOMINIQUE | 2 |
| Principle Power Inc | CERMELLI CHRISTIAN | 2 |
| Hywind AS | NIELSEN FINN GUNNAR | 2 |
| Hywind AS | JACKSON ROBERT PATRICK | 2 |
Only 9 co-assignee pairs appear across the set, with the strongest pairings linked to Hitachi's joint filings with Toda Corporation and Kyoto University — evidence that most floating wind IP is developed and held by a single assignee rather than through joint ventures.
The ranked leaders combine established offshore wind OEMs, platform-technology specialists and energy majors; momentum in the most recent year has cooled across nearly all of them, consistent with the broader publication lag rather than a genuine stop in R&D.
The leading assignee holds 210 records, well ahead of fifth place at 81 and tenth place at 33 — a steep drop-off that marks a genuine leader rather than a cluster of near-equals at the top.
Between fifth place (81 records) and tenth place (33 records) sits a group of assignees with sustained but smaller portfolios, spanning turbine OEMs, platform designers and research institutions rather than a single dominant type of player.
Several of the largest historical filers show zero records in the latest year and -100% year-on-year, but this tracks the roughly 18-month publication lag rather than a real halt — recent filings from these assignees are most likely still working through the pipeline.
| Assignee | Recent year | YoY |
|---|---|---|
| Siemens Gamesa Renewable Energy | 0 | -100% |
| Viasat Inc | 0 | -100% |
| Principle Power Inc | 0 | -100% |
| Equinor Energy AS | 0 | — |
| Hywind AS | 0 | — |
| Vestas Wind Systems AS | 0 | — |
| MHI Vestas Offshore Wind AS | 0 | — |
| Aker Solutions AS | 0 | -100% |
The dataset points to a field with an established leadership tier and a technology mix split between turbine control and marine engineering. The next step is testing a specific claim or filing strategy against that backdrop.
With 29.5% of records held by five assignees and platform-stabilisation art running back over a decade, a freedom-to-operate check against the highest-cited mooring and platform patents should come before drafting new control claims.
Run a freedom-to-operate searchB63B marine-vessel claims cover 40.3% of records — nearly as much as turbine control — so a technology map that treats floating wind as only a turbine-control problem will miss a large share of the relevant prior art.
Build a full technology mapRecent-year counts look low across nearly every leading assignee purely because of publication lag; revisit the trend in six to twelve months before drawing conclusions about slowing R&D.
Track filing activity over timeThe leading assignee in this dataset holds 210 of the 2,346 records in scope, well ahead of the fifth-ranked filer at 81 and the tenth-ranked filer at 33. That gap indicates a genuine leadership position rather than a fragmented field of near-equal competitors. The ranked list covers 100 companies drawn from the full record set, spanning established offshore wind OEMs, platform-technology developers and research institutions.
Filing volume grew from 143 records in 2017 to a peak of 253 in 2022, then declined to 172 by 2024, a -22% move from 2021's 220. That is a real pullback from the peak year rather than steady growth, but it should not be read as the field cooling further, since 2025 and 2026 counts are still incomplete under the normal 18-month publication lag. The reliable trend read currently stops at 2024.
The two largest IPC subclasses are F03D (wind motors, covering turbine design and control) at 69.5% of the 2,346 records, and B63B (ships and marine vessels, covering platform hulls and marine structures) at 40.3%. Smaller but active areas include F03B hydraulic machines, H04B and H04W communications, E02B waterway engineering, H01Q antennas and H02G cable installation, each in the single-digit-to-low-teens percentage range. Because a single record can carry multiple classes, these shares add up to more than 100%.
US12331723B2, filed by Equinor Energy AS and published 2025-06-17, covers a motion controller that adjusts individual rotor-blade pitch below rated wind speed specifically to damp surge motion of a floating platform, plus the corresponding control method. It is narrower than a general pitch-control patent: it targets platform motion damping as the control objective, not turbine output optimisation. Anyone building below-rated-speed pitch strategies for floating (rather than fixed-bottom) turbines should review this claim scope closely before finalising a control algorithm.
Relative to the dense claim coverage in core turbine control (F03D) and marine hull design (B63B), classes like H04W wireless networks, H01Q antennas and H02G power cabling show comparatively thin coverage — each under 8% of the 2,346 records. That suggests condition-monitoring communications, antenna integration on floating substructures, and dynamic power-cable routing for moving platforms are less crowded than turbine-control or mooring claims. These are not unclaimed areas, but the claim density is materially lower than in the two dominant classes.
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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.