Small & Micro Gas Turbine Patent Landscape 2026
The small and micro gas turbine patent space is heavily concentrated, with Pratt & Whitney Canada Corp holding the dominant position among a field that peaked around 2018 and has since eased. The core technology routes — turbine mechanics and gas-turbine plant design — are well-covered by a small group of aerospace incumbents, leaving adjacent branches in combustion, pumps, and electrification comparatively sparse.
Pratt & Whitney Canada leads a concentrated, incumbent-dominated field
Pratt & Whitney Canada Corp leads the applicant ranking by a wide margin, followed by Rolls-Royce PLC and Florida Turbine Technologies Inc. The top five filers together account for 57% of the combined patent records held by the hundred largest filers, indicating a highly concentrated competitive structure.
The gap between the top-ranked applicant and the rest is substantial: Pratt & Whitney Canada’s count is well ahead of second-ranked Rolls-Royce and more than double that of third-ranked Florida Turbine Technologies. Below these three, RTX Corp and General Electric represent a secondary tier before the field disperses into smaller, specialist contributors.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | PRATT & WHITNEY CANADA CORP | 127 | |
| 2 | Rolls-Royce PLC | 76 | |
| 3 | Florida Turbine Technologies Inc | 44 | |
| 4 | RTX Corp | 34 | |
| 5 | General Electric Co | 23 | |
| 6 | Honda Motor Co., Ltd. | 20 | |
| 7 | Honeywell International Inc | 20 | |
| 8 | Dev Sudarshan Paul | 15 | |
| 9 | Siemens AG | 10 | |
| 10 | Eaton Corp | 8 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | The Boeing Company | 8 | |
| 12 | United Technologies Corp | 8 | |
| 13 | Massachusetts Institute of Technology | 7 | |
| 14 | Derwent Aviation Consulting | 7 | |
| 15 | Indian Institute of Technology Kharagpur | 6 | |
| 16 | Dynamo Micropower Corp | 6 | |
| 17 | Bladon Jets Holdings Ltd | 6 | |
| 18 | Board of Trustees of the Leland Stanford Junior University | 6 | |
| 19 | Mitsubishi Heavy Industries Aero Engines Ltd | 5 | |
| 20 | JHRG | 5 |
This degree of concentration implies that the leading positions are defended by deep, overlapping patent portfolios across core turbine and gas-plant subclasses, raising the cost of head-on entry. New participants and academic contributors — such as MIT, Stanford, and the Indian Institute of Technology Kharagpur — are present but hold much smaller shares, suggesting that disruptive entry is more viable through adjacent or enabling technologies rather than core turbine mechanics.
Annual filing counts for the most recent 18–24 months are likely under-represented due to patent publication lag and should not be read as a continuation of the broader trend. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing activity has eased from its 2018 peak; turbine mechanics and gas-plant design dominate the technology mix
Two signals define the current landscape: annual filing volume peaked around 2018 and has since declined, and the technology mix is heavily weighted toward established mechanical subclasses with a long tail of sparser, potentially accessible branches.
Annual filing trend
Annual filings reached a high around 2018, then fell markedly through 2022–2023 before a partial recovery in 2024–2025. The overall recent-window growth is negative at -38%, consistent with a field past its expansion phase. Counts for 2024–2026 are subject to publication lag and likely understate true activity.
↗ Hover for values · click a bar to ask EurekaTechnology composition
F01D (Turbines & non-positive engines) and F02C (Gas-turbine plants) dominate the IPC composition, collectively accounting for the large majority of patent records. F02K (Jet & reaction propulsion) and F23R (Combustion chambers) form a secondary layer. Branches such as H02K (Electric motors & generators), F01M (Engine lubrication), B81B (MEMS), and B33Y (Additive manufacturing) register low counts, marking them as comparatively under-served relative to the core.
↗ 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.
Bearing supported rotor shaft of a gas turbine eng…
A small gas turbine engine that operates at high rotational speeds and includes a rotor shaft that is supported on both ends by ball bearings. The aft end ball bearings includes an outer race mounted to the support structure in such a way that axial displacement of the outer race is allowed to prevent axial loads from damaging the ball bearing. The outer… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Microturbomachinery | 326 |
| 2 | Gas turbine engine system | 218 |
| 3 | Nested core gas turbine engine | 216 |
| 4 | Passive cooling system for auxiliary power unit in… | 167 |
| 5 | Gas turbine power generation system | 165 |
| 6 | Gas turbine engine carburetor | 146 |
| 7 | Passive cooling system for auxiliary power unit in… | 127 |
| 8 | Gas turbine engine | 112 |
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 patent structure means for R&D investment decisions
The combination of a concentrated incumbent field, a past-peak filing curve, and sparse adjacent branches shapes where R&D investment is most and least defensible. Each structural dimension has a distinct implication for new entrants and diversifying incumbents.
Field is in decline: annual volume has eased significantly from the 2018 peak
The lifecycle stage is classified as Decline, with annual filings easing back from the 2018 peak and a recent-window growth rate of –38%. This signals that the core technology routes — turbine mechanics and gas-plant design — are approaching saturation in terms of patentable incremental innovation. R&D teams entering now must offer meaningful differentiation, whether through novel architectures, enabling subsystems, or hybrid integration, to generate protectable positions.
Lifecycle: DeclineTop five filers hold 57% of the leading hundred filers’ combined records
Pratt & Whitney Canada, Rolls-Royce, Florida Turbine Technologies, RTX Corp, and General Electric collectively hold 57% of patent records among the hundred largest filers. This degree of concentration means that freedom-to-operate analysis is essential before committing to core turbine or gas-plant subclasses. The secondary tier — Honda, Honeywell, Siemens, Eaton — is meaningfully smaller, and the long tail includes individual inventors and academic institutions, which may present licensing or acquisition opportunities.
High concentrationHonda and Stanford are the field’s most active co-filers
The most active co-filing relationship identified is between Honda Motor Co Ltd and the Board of Trustees of the Leland Stanford Junior University, with 10 co-filed records, followed by a closely related Honda–Stanford University pairing with 8 records. This industry–academia collaboration is the only significant co-filing cluster in evidence, suggesting that cross-sector collaboration remains limited and that most incumbents file independently. Teams seeking collaborative pathways may find academic institutions comparatively accessible co-development partners.
Limited collaborationUS dominates filings; Europe and Canada are meaningful secondary markets
The United States is the leading filing jurisdiction by a wide margin. Europe (EPO) and Canada form a clear secondary tier, reflecting the headquarters geography of the dominant filers. WIPO (PCT) filings are present but modest, and China and Japan hold low counts despite the scale of their aerospace and energy sectors. This geographic skew implies that IP protection outside North America and Western Europe may be less robust, which could represent either a vulnerability for incumbents or an opening for regional entrants.
US-centric filingGo 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 |
|---|---|---|
| Honda Motor Co., Ltd. | Board of Trustees of the Leland Stanford Junior University | 10 |
| Honda Motor Co., Ltd. | Stanford University | 8 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Pratt & Whitney Canada and Rolls-Royce lead with distinct technology emphases
Two applicants stand clearly above the rest in patent record count and breadth of coverage. Their technology emphases differ in ways that reflect their broader product strategies, with Pratt & Whitney Canada concentrating on turbine structural components and Rolls-Royce anchoring in gas-plant system design.
Pratt & Whitney Canada Corp
Pratt & Whitney Canada Corp holds 127 patent records, nearly double the second-ranked applicant. Its technology focus is concentrated in F01D 25 (turbine structural components) and F01D 5 (turbine blades and rotors), with a significant secondary emphasis on F02K 3 (jet and reaction propulsion). Recent momentum is classified as a new entrant to the most recent filing window, suggesting its historical base was built earlier and recent filings are comparatively few — consistent with the field’s overall past-peak profile.
127 patent recordsRolls-Royce PLC
Rolls-Royce PLC holds 76 patent records and leads in gas-turbine plant system design (F02C 7 and F02C 3), with secondary coverage in turbine blade and rotor technology (F01D 5). This system-level emphasis distinguishes Rolls-Royce from Pratt & Whitney Canada’s component-level focus. Momentum over the recent filing window is down –19% versus the prior three-year period, indicating some contraction in filing pace consistent with the field-wide trend.
76 patent records| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Pratt & Whitney Canada Corp | 2 | ▲ new entrant |
| Rolls-Royce PLC | 17 | ▼ -19% |
| General Electric Co | 1 | ▲ new entrant |
| RTX Corp | 5 | ▲ new entrant |
Under-served branches adjacent to the core: combustion, pumps, electrification, and lubrication
Several IPC branches appear in the corpus at low share relative to the dominant F01D and F02C classes. These represent observations of relative sparsity; some have plausible technical value and realistic entry paths for teams differentiated from the core incumbents.
H02K · Electric motors & generators
H02K registers only 33 patent records and a 3% share of the corpus — notably sparse given the industry-wide push toward hybrid-electric and turbo-electric propulsion architectures. Integrating small gas turbines with high-speed generators or motor-starters is an active engineering challenge, and the low incumbent density in this branch suggests that specialized power electronics and machine design teams could establish defensible positions without directly confronting the core turbine incumbents. Entry would likely require cross-domain expertise combining F02C system knowledge with H02K electrical machine design.
Search this in Eureka →B33Y · Additive manufacturing for gas turbine components
B33Y (additive manufacturing / 3D printing) registers only 3 patent records in the corpus — the lowest share among branches with identifiable technical relevance to small gas turbine manufacturing. Additive manufacturing is increasingly used for complex turbine hot-section components where traditional casting is cost-prohibitive at small scale, making this a plausible value-creation path. The sparse filing count indicates that the intersection of additive process innovation and micro-turbine component geometry is not yet systematically claimed, which may offer a time-limited window for teams with both materials and design competency.
Search this in Eureka →Frequently asked questions
The corpus covers 137 patent families in scope globally. Patent records across jurisdictions and IPC subclasses exceed this figure because a single family can be filed in multiple countries and assigned multiple IPC codes.
Pratt & Whitney Canada Corp leads with 127 patent records, well ahead of second-ranked Rolls-Royce PLC (76 patent records) and third-ranked Florida Turbine Technologies Inc (44 patent records).
No. The field is classified as Decline, with annual filings having eased back from a peak around 2018. The recent-window growth rate is -38%. Note that the most recent 18–24 months of data are likely under-counted due to patent publication lag, so the true current level may be somewhat higher than raw recent counts suggest.
F01D (Turbines & non-positive engines) and F02C (Gas-turbine plants) are the dominant IPC classes by patent record count, reflecting the field’s concentration in core turbine mechanics and gas-plant system design. F02K (Jet & reaction propulsion) and F23R (Combustion chambers) form a meaningful secondary layer.
The United States is the leading filing jurisdiction, followed by Europe (EPO) and Canada as secondary markets. China and Japan hold comparatively few records despite the scale of their aerospace and energy industries, indicating that IP coverage outside North America and Western Europe may be less comprehensive.
The most active co-filing relationship identified is between Honda Motor Co Ltd and the Board of Trustees of the Leland Stanford Junior University, with 10 co-filed records, and a related Honda–Stanford University pairing with 8 records. Beyond this cluster, cross-organization collaboration appears limited, with most major applicants filing independently.
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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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