GTF Containment & Airworthiness Patent Snapshot 2026
This is a tightly concentrated niche led by RTX Corp and MTU Aero Engines, together with United Technologies Corp accounting for the entirety of the top-ranked filers. The field is still expanding on a multi-year basis, though annual volume has eased from its 2017 peak, with meaningful white space emerging in digital data processing and sensor-based velocity monitoring adjacent to the dominant gas-turbine classes.
RTX Corp leads a three-player field with near-total concentration at the top
RTX Corp holds the top position among ranked filers, followed closely by MTU Aero Engines GmbH and United Technologies Corp — the three applicants together represent every patent record in the top-hundred-filer ranking, making this one of the most concentrated niches in aerospace propulsion IP.
The top five filers account for 100% of the ranked applicants visible in this query’ combined total, leaving no room for a meaningful second tier. The gap between RTX Corp at the top and the third-ranked United Technologies Corp is substantial, reinforcing a clear leader–challenger structure.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | RTX Corp | 17 | |
| 2 | MTU Aero Engines GmbH | 14 | |
| 3 | United Technologies Corp | 7 |
RTX Corp’s and MTU Aero Engines GmbH’s positions suggest that the primary airworthiness containment design space for geared turbofan engines is effectively locked up by OEM incumbents; new entrants would face a dense prior-art evidence snapshot in core gas-turbine and turbomachinery classes.
The most recent filing years are further understated by patent publication lag and should not be interpreted as a slowdown in actual inventive activity. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Multi-year growth with a 2017 activity peak and a gas-turbine-dominant technology mix
The annual filing trend and technology composition together reveal a field that expanded sharply around 2017, has seen reduced but renewed activity from 2023 onward, and remains anchored in classical gas-turbine and turbomachinery IPC classes with a nascent digital fringe.
Annual filing trend
Filings peaked in 2017 and dropped through 2021–2022 before a modest recovery in 2023–2024; the three-year recent window shows 33% growth over the prior equivalent window, confirming multi-year expansion despite the easing annual peak. Years 2024–2026 are materially understated by publication lag and should be read as lower bounds.
↗ Hover for values · click a bar to ask EurekaTechnology composition
F02C (Gas-turbine plants) and F01D (Turbines & non-positive engines) are visible in the technology mix, reflecting the core aeromechanical focus of GTF containment work. F02K (Jet & reaction propulsion) forms a secondary cluster, while G06F (digital data processing) and G01P (velocity & acceleration) are present but sparse — signalling where adjacent technical work could expand.
↗ 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.
Low noise compressor and turbine for geared turbof…
A gas turbine engine has a fan, a turbine section having a first turbine including a first turbine, a compressor, and a gear reduction positioned between the fan and the first turbine. Each of the compressor and the first turbine includes a number of blades in each of a plurality of blade rows, the number of blades rotatable at least some of the time at a… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Low noise compressor rotor for geared turbofan eng… | 10 |
| 2 | Low noise turbine for geared turbofan engine | 9 |
| 3 | Low noise compressor and turbine for geared turbof… | 6 |
| 4 | Low noise compressor and turbine for geared turbof… | 6 |
| 5 | Low noise compressor rotor for geared turbofan eng… | 6 |
| 6 | Low noise compressor rotor for geared turbofan eng… | 3 |
| 7 | Low noise compressor rotor for geared turbofan eng… | 3 |
| 8 | Low noise compressor rotor for geared turbofan eng… | 2 |
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.
Assignee snapshot from the current evidence set
The applicants below are visible in this query result. Because the evidence set is relatively small, read this section as a directional snapshot rather than a full competitive ranking.
RTX Corp
RTX Corp holds the leading position with 17 patent records in this niche, concentrated in gas-turbine plant configurations (F02C) and turbomachinery (F01D). United Technologies Corp — the predecessor entity — contributes a further 7 patent records, making the combined RTX/UTC lineage the visible prior-art block. The portfolio emphasis is on core aeromechanical containment architecture rather than digital or sensing adjacencies.
patent records: 17MTU Aero Engines GmbH
MTU Aero Engines GmbH holds 14 patent records and is flagged as a new entrant in the most recent filing window, suggesting active and growing participation despite a prior low base. Its technology emphasis mirrors the leader’s, centering on F02C (Gas-turbine plants) and F02K (Jet & reaction propulsion), consistent with MTU’s role as a risk-and-revenue-sharing partner on the GTF program. The co-filing relationship with both United Technologies Corp and Raytheon Technologies Corp further reinforces its embedded position.
patent records: 14Frequently asked questions
The scoped corpus contains 12 patent families. This is a small, specialist niche — reflecting the narrow intersection of geared turbofan architecture and formal containment/airworthiness certification requirements.
RTX Corp leads with 17 patent records, followed by MTU Aero Engines GmbH with 14 and United Technologies Corp with 7. These three applicants account for 100% of the top-hundred-filer ranking, making the field effectively an OEM duopoly with a predecessor entity.
On a multi-year basis, yes: the recent three-year window is 33% above the prior equivalent period. However, annual volume peaked in 2017 and has not returned to that level, so growth is a broad-window observation rather than a year-on-year trend. The most recent filing years are also understated by publication lag.
The United States is the visible filing jurisdiction. Canada and Europe (EPO) each have materially lower patent-record counts. The relatively thin EPO coverage may represent a gap for challengers considering European prosecution strategies.
The most-cited documents in the corpus are titled variations of ‘Low noise compressor rotor for geared turbofan engine’ and ‘Low noise turbine for geared turbofan engine,’ with the top-cited record receiving 10 citations. These titles suggest that acoustic and aeromechanical performance — not just structural containment — is a core dimension of the patented technology.
The two sparsest branches are G06F (Electric digital data processing, 4 patent records) and G01P (Velocity & acceleration measurement, 2 patent records). Both are observations of relative sparsity against the visible aeromechanical core; their relevance as entry points depends on whether an applicant can connect digital or sensing innovations to GTF airworthiness certification requirements.
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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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