Turbofan Superalloy, CMC & TBC Patent Landscape
The turbofan superalloy, CMC, and thermal-barrier-coating space is a highly concentrated field dominated by a small number of Western aerospace and industrial-gas-turbine OEMs, with General Electric holding a commanding lead. Annual filing volume peaked in 2021 and has since eased, signalling a maturing stage where whitespace is shifting toward adjacent process and application branches rather than core turbine-component claims.
General Electric leads a tightly concentrated field dominated by four Western OEMs
General Electric ranks first with 372 patent records, nearly double the combined tally of the next two closest filers—RTX Corp (189) and United Technologies Corp (154)—confirming a decisive first-mover advantage in turbine-component materials and coatings.
The top five filers account for 72% of the hundred largest filers’ combined total, indicating a very narrow competitive tier at the top. Rolls-Royce PLC (55) and Cannon Muskegon Corp (45) form a distant second tier, and activity drops sharply beyond rank five.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | General Electric Company | 372 | |
| 2 | RTX Corporation | 189 | |
| 3 | United Technologies Corporation | 154 | |
| 4 | Rolls-Royce PLC | 55 | |
| 5 | Cannon Muskegon Corporation | 45 | |
| 6 | Rolls-Royce Corporation | 33 | |
| 7 | Siemens Energy Inc. | 33 | |
| 8 | Praxair Surface Technologies Inc. | 22 | |
| 9 | Honeywell International Inc. | 21 | |
| 10 | Rolls-Royce North American Technologies Inc. | 21 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Siemens AG | 12 | |
| 12 | Rolls-Royce High Temperature Composites Inc. | 11 | |
| 13 | Oerlikon Metco (US) Inc. | 8 | |
| 14 | Praxair Technology Inc. | 8 | |
| 15 | Central Research Institute of Electric Power Industry | 8 | |
| 16 | NV Interturbine | 6 | |
| 17 | Mitsubishi Hitachi Power Systems Ltd. | 6 | |
| 18 | PRATT & WHITNEY CANADA CORP | 6 | |
| 19 | GE Infrastructure Technology LLC | 6 | |
| 20 | Thomas Alan Taylor | 5 |
Such concentration implies that any entrant seeking freedom to operate will encounter dense claim thickets in core superalloy alloy design and thermal-spray TBC processes, making adjacent or process-level differentiation the most accessible entry strategy.
Patent records from approximately the last 18–24 months are subject to publication lag and likely under-represent current activity; treat the most recent data points as a floor rather than a ceiling. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A 2021 filing peak followed by easing volume; turbine mechanics and coating deposition dominate the technology mix
Two charts together tell a story of a field that grew steadily from 2017 to 2021 and has since contracted, while the technology mix reveals that protective-coating and ceramic-composite sub-disciplines sit alongside core turbine-mechanics claims.
Annual filing trend
Filings rose from 26 in 2017 to a peak of 49 in 2021, then fell sharply in 2022–2023; partial recovery is visible in 2024–2025. The 2022–2025 bars are affected by publication lag and should not be read as a definitive retreat—final counts for those years will be higher once pending applications publish.
↗ Hover for values · click a bar to ask EurekaTechnology composition
F01D (turbines and non-positive engines) is the dominant branch, followed closely by C23C (coating and surface deposition) and C04B (ceramics, cement and refractories). C22C (alloys) and F02C (gas-turbine plants) complete the top five. The balance between structural, coating and materials branches reflects the integrated nature of turbofan hot-section design.
↗ 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.
Thermal barrier coating repair
A method of repairing a gas turbine engine component includes the steps of providing a component with a damaged thermal barrier coating surface, preparing the damaged thermal barrier coating surface to provide a repair area, and suspension plasma spraying a ceramic material onto the repair area to produce a repaired area. (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Method for repairing a thermal barrier coating | 199 |
| 2 | Turbine rotor blade tip coated with alumina-zircon… | 191 |
| 3 | Methods for repairing and reclassifying gas turbin… | 173 |
| 4 | Ceramic turbine airfoils with cooled trailing edge… | 170 |
| 5 | Integral turbine nozzle support and discourager seal | 170 |
| 6 | Property-balanced nickel-base superalloys for prod… | 161 |
| 7 | Coating fixture for a turbine engine blade | 132 |
| 8 | Multi-layer thermal barrier coating with transpira… | 128 |
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 allocation
Four lenses—maturity, concentration, collaboration, and geography—frame the investment calculus for any team targeting turbofan hot-section materials or coatings.
Decline stage: annual volume has eased from the 2021 peak
The lifecycle signal is Decline, driven by annual filings easing back from the 2021 high of 49 records. Core superalloy composition and standard yttria-stabilised-zirconia TBC claims are heavily populated; incremental improvements in these areas face a dense prior-art landscape. R&D teams should weigh whether new filings in the dominant branches will secure meaningful freedom to operate.
Past-peakTop five filers hold 72% share among the hundred largest filers
General Electric, RTX Corp, United Technologies Corp, Rolls-Royce PLC, and Cannon Muskegon Corp collectively dominate claim space. The tier gap between rank one (372 records) and rank four (55 records) is stark, signalling high barriers to competing head-to-head in core turbine-blade superalloy or TBC systems. Niche specialists such as Praxair ST Technology and Oerlikon Metco occupy narrower coating-process niches with lower record counts.
Highly concentratedRolls-Royce entities are the most active co-filers; GE shows no prominent co-filing
The most active co-filing pair is Rolls-Royce Corp and Rolls-Royce North American Technologies Inc with 11 joint records, followed by Rolls-Royce Corp and Rolls-Royce High Temperature Composites Inc (6 records). Rolls-Royce PLC also co-filed with the University of Cambridge (2 records), suggesting selective academic engagement in CMC development. General Electric and RTX Corp show no prominent co-filing activity in evidence, indicating they pursue IP independently.
Intra-Rolls-Royce ecosystemEurope (EPO) leads jurisdictional coverage; China and Asia remain lightly protected
Europe via EPO leads patent-record coverage, followed by the United States and Canada. Japan holds a moderate position (57 records), while China has only 15 records—a striking gap given the scale of Chinese aero-engine ambitions. Singapore, Australia, and India appear but with single-digit or low double-digit counts. Teams targeting Asian markets should audit whether existing protection adequately covers those jurisdictions.
EPO-centred, China thinGo 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.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| Rolls-Royce Corporation | Rolls-Royce North American Technologies Inc. | 11 |
| Rolls-Royce Corporation | Rolls-Royce High Temperature Composites Inc. | 6 |
| Rolls-Royce PLC | Rolls-Royce High Temperature Composites Inc. | 3 |
| Rolls-Royce PLC | Rolls-Royce Corporation | 2 |
| Rolls-Royce PLC | Rolls-Royce North American Technologies Inc. | 2 |
| Rolls-Royce PLC | THE CHANCELLOR MASTERS & SCHOLARS OF THE UNIV OF C… | 2 |
| Rolls-Royce North American Technologies Inc. | Rolls-Royce High Temperature Composites Inc. | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
General Electric anchors the field; RTX Corp is the leading active challenger
The two largest filers differ in both technology emphasis and recent momentum: GE’s portfolio is broadest but its recent filing pace has dropped sharply, while RTX Corp shows a moderate decline from a still-substantial recent base.
General Electric Co
General Electric holds 372 patent records—the largest portfolio in scope—spread across turbine mechanics (F01D 5), thermal-spray coating (C23C 4), and nickel-based superalloys (C22C 19). Its recent filing pace is down 87% versus its prior three-year window, consistent with the broader field’s post-peak trajectory and GE’s structural reorganisation. Despite the slowdown, the depth of the existing estate makes GE the dominant prior-art reference point in virtually every sub-branch.
patent records: 372RTX Corp
RTX Corp holds 189 patent records with a technology emphasis skewed toward ceramics and CMC (C04B 35: 85 records) more than coating deposition, differentiating it from GE’s alloy-plus-coating profile. Recent filings are down 43% versus the prior three-year window—a smaller decline than GE’s—suggesting RTX retains more active CMC-focused R&D investment. United Technologies Corp (154 records, now folded into RTX) adds further historical depth to the combined estate.
patent records: 189| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| General Electric Company | 2 | ▼ -87% |
| RTX Corporation | 27 | ▼ -43% |
| Rolls-Royce PLC | 4 | ▼ -73% |
| Honeywell International Inc. | 2 | ▲ new entrant |
Under-served branches in gas-turbine plant systems, combustion, crystal growth, and laminate structures
Five IPC branches appear at relatively lower share within the broader claim landscape; each sits adjacent to the dominant turbine-component and coating classes and may offer differentiated filing opportunities for teams with matching technical capabilities.
F02C · Gas-turbine plant systems
F02C covers gas-turbine plant-level integration—cycle efficiency, recuperation, and hybrid propulsion architectures—and holds 192 patent records at a 7% share of the technology composition, modest compared with the dominant F01D branch. As next-generation turbofan architectures (open-fan, hybrid-electric) demand tighter system-level integration of advanced materials, system-patent claims in F02C could complement existing component-level superalloy estates. Entry would suit OEMs or Tier-1 system integrators already active in F01D.
Search this in Eureka →C30B · Crystal growth
C30B (crystal growth, directional solidification) covers the single-crystal and directionally solidified superalloy casting processes that underpin turbine-blade temperature capability. At 68 patent records and a 2% share, it is notably sparse relative to its technical centrality—Cannon Muskegon Corp is the primary specialist here. Teams developing novel grain-control processes, accelerated solidification, or additive-seeded single-crystal methods could find meaningful whitespace, particularly given the near-absence of Asian filers in this branch.
Search this in Eureka →How leading filers differ across superalloy, CMC, and TBC technology routes
Route coverage across the main technology branches in the current evidence set.
| Player | F01D 5 · Turbines & non-positive engines | C23C 4 · Coating & surface deposition | C04B 35 · Ceramics, cement & refractories | C22C 19 · Alloys | C23C 28 · Coating & surface deposition |
|---|---|---|---|---|---|
| General Electric Company | Strong · 191 | Strong · 178 | Moderate · 75 | Strong · 128 | Strong · 98 |
| United Technologies Corporation | Strong · 178 | Strong · 131 | Moderate · 83 | Emerging · 34 | Moderate · 47 |
| RTX Corporation | Strong · 58 | Emerging · 14 | Strong · 85 | Absent | Emerging · 10 |
| Rolls-Royce PLC | Strong · 23 | Strong · 14 | Strong · 18 | Strong · 15 | Moderate · 7 |
| Cannon Muskegon Corporation | Moderate · 16 | Absent | Absent | Strong · 44 | Absent |
| Rolls-Royce Corporation | Strong · 20 | Absent | Strong · 30 | Absent | Absent |
| Honeywell International Inc. | Strong · 11 | Strong · 10 | Strong · 9 | Absent | Strong · 12 |
Frequently asked questions
The corpus in scope contains 253 patent families. Applicant rankings within that corpus are expressed in patent records, which can exceed the family count because a single family filing in multiple offices generates multiple records.
General Electric Co leads with 372 patent records, covering turbine mechanics, thermal-spray coating deposition, and nickel-based superalloy composition—the broadest portfolio across all three material sub-disciplines.
The field is classified as Decline: annual filing volume peaked in 2021 at 49 records and has eased since. The most recent years are affected by publication lag, so the true current level is likely higher than raw counts suggest, but the directional trend is past-peak.
Europe via the EPO leads with 384 patent records, followed by the United States (304) and Canada (64). China has only 15 records—significantly lower than its aerospace industry scale—suggesting a potential protection gap for filers targeting Chinese manufacturing or MRO markets.
The highest-cited works address thermal-barrier coating repair methods, alumina-zirconia blade-tip coatings, gas-turbine component reclassification, ceramic turbine airfoils with cooled trailing edges, nickel superalloy composition, and multi-layer TBC architectures—pointing to repair, durability, and thermal management as the field’s most technically influential themes.
Five branches carry relatively lower patent-record share: F02C (gas-turbine plant systems, 7%), B32B (layered laminates, 3%), F23R (combustion chambers, 3%), C22F (non-ferrous metal treatment, 3%), and C30B (crystal growth, 2%). Crystal growth and combustion-chamber integration are particularly sparse relative to their technical importance in next-generation turbofan development.
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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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