Offshore Wind Turbine for Desalination Plants Patent Landscape
Offshore Wind Turbine for Desalination Plants Patent Landscape in 2026
The offshore wind-powered desalination patent field is in a Growth stage, with Siemens Gamesa holding a commanding lead over a fragmented second tier of smaller specialists and academic entrants. Activity expanded strongly through 2022 before annual volume eased, while the most recent years remain understated by publication lag — the multi-year trajectory is still upward.
Siemens Gamesa leads a fragmented field of specialists and new entrants
Siemens Gamesa Renewable Energy holds the top position with 123 patent records, more than three times the count of the second-ranked filer, Innovator Energy LLC at 40 patent records. The gap between first and second place is the single most defining structural feature of this landscape.
The top five filers — Siemens Gamesa, Innovator Energy, Bombora Wave Power, Havkraft, and Seamach — account for 38% of the combined total across the hundred largest filers. Below this leading cluster, the field fragments quickly into single-digit and low-double-digit filers, many of them small ventures, independent inventors, and universities.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Siemens Gamesa Renewable Energy | 123 | |
| 2 | Innovator Energy LLC | 40 | |
| 3 | Bombora Wave Power | 25 | |
| 4 | Havkraft | 22 | |
| 5 | Seamach Ltd | 19 | |
| 6 | University of Malta | 17 | |
| 7 | NeptuneTech Ltd | 17 | |
| 8 | GOLDWIND SCI & TECH CO LTD | 17 | |
| 9 | Oil States Industries Inc | 15 | |
| 10 | Environmental Resources Management Ltd | 14 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Dehlsen Associates of the Pacific Ltd | 11 | |
| 12 | Floating Windfarms Corp | 11 | |
| 13 | Ocean Wind Energy Systems | 11 | |
| 14 | Ingeteam Power Technology | 10 | |
| 15 | Christopher G. Hart | 10 | |
| 16 | Adolfo Gonzalez Perez | 10 | |
| 17 | Acciona Energía SA | 10 | |
| 18 | Donald P. Bushby | 8 | |
| 19 | Glatt GmbH | 8 | |
| 20 | Cotes | 7 |
Siemens Gamesa’s dominant position, concentrated in core wind turbine mechanics (F03D subclasses), signals a strategic commitment to integrating offshore wind platforms with downstream energy uses. Challengers are largely differentiated by technology route — wave and hydraulic energy (F03B) or marine vessel integration (B63B) — rather than competing on the same subclasses as the leader.
Filing counts for 2024 and 2025 are substantially understated due to the 18-to-24-month patent publication lag and should not be read as a reversal of the field’s growth trajectory. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Activity surged to a 2022 peak; the technology mix is wind-turbine-centric with growing ancillary branches
The filing trend and IPC composition together show a field that scaled rapidly from 2020 through 2022 and diversified beyond core wind mechanics into marine, electrolytic, and water-treatment subclasses. These two charts reveal both the pace of growth and the breadth of technology integration.
Annual filing trend
Annual filings rose from 17 records in 2019 to a peak of 138 in 2022, reflecting a rapid scaling of R&D activity. Volume eased to 70 in 2023 and 46 in 2024; figures for 2024 and 2025 are materially understated by publication lag and should not be interpreted as a sustained decline. The three-year recent window is 70% above the prior three-year window, confirming the field is still expanding on a multi-year basis.
↗ Hover for values · click a bar to ask EurekaTechnology composition
F03D (Wind motors) dominates with 468 patent records, establishing wind turbine mechanics as the field’s core. The next largest branches — B63B (Ships and marine vessels) at 185, F03B (Hydraulic machines and engines) at 175, C25B (Electrolytic production of compounds) at 85, and H02J (Power supply and grid systems) at 73 — indicate that marine integration, wave energy coupling, green hydrogen co-production, and grid interface are significant secondary areas of innovation. C02F (Water and wastewater treatment) at 62 records directly addresses the desalination process itself and remains relatively sparse relative to the turbine-side work.
↗ 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.
Offshore wind turbine for freshwater production, w…
An offshore wind turbine is provided, including a foundation carrying a tower, the tower carrying a nacelle, wherein a generator for generating electrical power is housed in the nacelle, and a rotor including wind turbine blades, which is mounted to a rotor hub and coupled to the generator for providing mechanical input power to the generator, wherein the… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Offshore wind turbine | 408 |
| 2 | Offshore wind turbine with multiple wind rotors an… | 281 |
| 3 | Wind power system | 114 |
| 4 | Self-sufficient hydrogen generator | 80 |
| 5 | Offshore and marine vessel-based nuclear reactor c… | 77 |
| 6 | Fluid-dynamic renewable energy harvesting system | 71 |
| 7 | Method and apparatus for ocean energy conversion, … | 65 |
| 8 | Wind Power System | 63 |
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 investment decisions
The landscape’s growth stage, concentrated leadership, absent co-filing activity, and Western-jurisdiction bias each carry distinct implications for teams deciding where to position new R&D or IP.
Growth stage: multi-year expansion with annual volume easing from the 2022 peak
The field is classified as Growth: recent three-year filings are 70% above the prior three-year window, confirming sustained expansion at the portfolio level. Annual volume peaked at 138 records in 2022 and has eased since, though recent years are further compressed by publication lag. Teams entering now face a field that is neither nascent nor mature — foundational platform patents are being filed, but the technology is not yet commoditised.
Growth StageOne dominant incumbent; second tier fragmented among specialists
Siemens Gamesa’s 123-record lead is more than 3× the nearest rival. The top five filers hold 38% of the combined total among the hundred largest filers, while the remainder of the top 100 is split among dozens of small ventures, individual inventors, and universities. This structure means a new entrant with a differentiated technology route — particularly in water treatment or electrolytic co-production — faces limited direct IP blocking risk from the leader, whose coverage concentrates on turbine mechanics.
Moderate-High ConcentrationNo co-filing activity detected; ecosystem development is an open strategic lever
The collaboration evidence shows no recorded co-applicant filings in this corpus. The field’s innovators — wind OEMs, marine engineering firms, water treatment companies, and academic groups — are filing independently rather than forming joint IP positions. This absence of alliances is notable given the cross-disciplinary nature of the technology and represents an open strategic lever: a partnership between a wind platform player and a desalination or electrolysis specialist could create portfolio differentiation that solo filers cannot replicate quickly.
No Co-filing DetectedUS and EPO are primary protection venues; high-demand emerging markets under-represented
The United States leads jurisdiction coverage with 156 patent records, followed by EPO at 133 and WIPO (PCT) at 85. Australia ranks fourth at 47 records, reflecting its offshore wind and water-scarcity policy context. China holds 42 records despite being a major offshore wind market. Notably, water-scarce markets with active desalination demand — such as the Middle East (AE: 1 record) and South Africa (ZA: 4 records) — are sparsely covered, suggesting protection gaps in end-use geographies.
US/EPO 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.
Co-filing pairs, ranked by the number of jointly-filed patent families.
Siemens Gamesa dominates on turbine mechanics; Innovator Energy leads hydraulic and grid-integration routes
Two applicants separate from the field on both volume and trajectory. Siemens Gamesa holds a commanding IP position in core wind turbine subclasses, while Innovator Energy has built a differentiated portfolio around hydraulic energy conversion and grid storage — a complementary rather than directly competing emphasis.
Siemens Gamesa Renewable Energy
With 123 patent records, Siemens Gamesa is the field’s dominant filer by a wide margin. Its technology emphasis is concentrated in F03D subclasses — wind turbine integration (F03D 9), offshore structural systems (F03D 13), and auxiliary wind motor components (F03D 80) — reflecting a platform-level approach to offshore wind deployment. Recent filing momentum is sharply positive at +184% in the recent window versus the prior period, indicating an accelerating rather than maturing filing program.
families: 123Innovator Energy LLC
Innovator Energy LLC holds 40 patent records and pursues a distinct technology route: its top subclasses are F03B 13 (hydraulic machines and wave energy), H02J 15 (grid-level energy storage), and E02B 9 (hydraulic waterway engineering). This positions it as the field’s leading specialist in energy conversion and storage — a role complementary to, rather than competing with, Siemens Gamesa’s turbine-centric portfolio. Recent filing trend is +27%, indicating steady growth from a smaller base.
families: 40| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Siemens Gamesa Renewable Energy | 91 | ▲ +184% |
| Innovator Energy LLC | 19 | ▲ +27% |
| Havkraft | 3 | ▲ new entrant |
| Seamach Ltd | 1 | ▲ new entrant |
| University of Malta | 4 | ▲ new entrant |
Under-served adjacent branches in water treatment, electrolysis, and grid integration
Several IPC branches adjacent to the dominant wind turbine core carry sparse relative coverage despite clear technical relevance to offshore wind-powered desalination. These branches are observations of relative sparsity; entry-path viability depends on specific technology readiness and commercial context.
C02F · Water & wastewater treatment
C02F covers the desalination and water purification processes that are the stated end-use of this technology field, yet it accounts for only 62 patent records — a 4% share relative to total IPC assignments. The technical linkage to the application is direct: membrane desalination, reverse osmosis energy recovery, and brine management are all C02F territory. A team combining offshore wind platform IP with proprietary water treatment process patents could establish a differentiated, end-to-end IP position that pure wind-turbine filers do not currently hold.
Search this in Eureka →C25B · Electrolytic production of compounds
C25B (electrolytic production, including green hydrogen via electrolysis) appears in 85 patent records — the fourth-largest branch — but its share remains modest relative to the turbine core. The University of Malta and Havkraft both show early-stage filings in this subclass, and the ‘Self-sufficient hydrogen generator’ is among the most-cited patents in the corpus. For teams working on dual-use offshore platforms that co-produce desalinated water and green hydrogen, this branch represents an adjacent IP space where the competitive field is still thin and the technical rationale is well-established.
Search this in Eureka →Leaders diverge sharply by technology route: turbine mechanics versus hydraulic and grid integration
Strength of each leader across the main technology routes.
| Player | F03D 9 · Wind motors (wind turbines) | F03D 13 · Wind motors (wind turbines) | F03B 13 · Hydraulic machines & engines | B63B 35 · Ships & marine vessels | F03D 80 · Wind motors (wind turbines) |
|---|---|---|---|---|---|
| Siemens Gamesa Renewable Energy | Strong · 89 | Strong · 52 | Absent | Absent | Moderate · 43 |
| Seamach Ltd | Strong · 19 | Strong · 18 | Strong · 14 | Strong · 14 | Absent |
| NeptuneTech Ltd | Strong · 17 | Absent | Strong · 16 | Strong · 15 | Absent |
| Innovator Energy LLC | Absent | Absent | Strong · 32 | Absent | Absent |
| Bombora Wave Power | Moderate · 7 | Absent | Strong · 23 | Absent | Absent |
| Environmental Resources Management Ltd | Strong · 14 | Strong · 13 | Absent | Absent | Absent |
Frequently asked questions
The corpus covers 488 patent families in scope. The United States is the leading protection jurisdiction with 156 patent records, followed by EPO at 133 and WIPO (PCT) at 85.
Siemens Gamesa Renewable Energy holds the top position with 123 patent records — more than three times the count of the second-ranked applicant, Innovator Energy LLC at 40 records. Siemens Gamesa’s recent filing momentum is +184% versus the prior three-year period.
The field is in a Growth stage. Recent three-year filings are 70% above the prior three-year window. Annual volume peaked at 138 records in 2022 and has eased since, but the most recent years are materially understated by the 18-to-24-month publication lag, so the multi-year trajectory remains upward.
F03D (Wind motors) dominates with 468 patent records. The next significant branches are B63B (Ships and marine vessels) at 185, F03B (Hydraulic machines and engines) at 175, C25B (Electrolytic production) at 85, H02J (Power supply and grid systems) at 73, E02B (Hydraulic waterway engineering) at 67, and C02F (Water and wastewater treatment) at 62.
No co-applicant filing activity is recorded in the evidence. Filers across wind OEMs, marine engineering firms, water treatment companies, and universities are operating independently, with no detected joint IP positions at the portfolio level.
Water-scarce markets with high desalination demand are sparsely covered. The Middle East (AE: 1 patent record) and several emerging markets show minimal filing activity despite being natural end-use markets for offshore wind-powered desalination. Australia is a relative outlier at 47 records, likely reflecting its combination of offshore wind policy and water-scarcity context.
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