Composite Airframe Patent Landscape 2026
The composite airframe patent field is heavily concentrated: Boeing alone accounts for the largest single share among ranked filers, and the top five filers together hold 65% of the hundred largest filers’ combined output. Annual volume peaked in 2018 and has since eased materially, marking a field in decline on a recent-window basis.
Boeing leads a tightly concentrated field with a wide gap to challengers
Boeing Corporation holds the top-ranked position with 97 patent records, more than six times the nearest challenger, Rocky Mountain Composites Inc at 15 patent records, confirming a strongly skewed competitive structure.
The top five filers — Boeing, Rocky Mountain Composites, Jiangsu Changtan Robot, Bell Helicopter Textron, and Textron Innovations — together account for 65% of the hundred largest filers’ combined total, indicating a highly concentrated field with a pronounced tier gap between the leader and the rest.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | The Boeing Company | 97 | |
| 2 | Rocky Mountain Composites Inc | 15 | |
| 3 | Jiangsu Changtan Robot Co Ltd | 14 | |
| 4 | Bell Helicopter Textron Inc | 13 | |
| 5 | Textron Innovations Inc | 12 | |
| 6 | Bombardier Inc | 6 | |
| 7 | General Atomics Aeronautical Systems Inc | 6 | |
| 8 | United Technologies Corporation | 6 | |
| 9 | Spectrum Aeronautical LLC | 6 | |
| 10 | Short Brothers PLC | 4 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Airbus Operations SL | 4 | |
| 12 | FOSHAN SHENFENG AVIATION SCI & TECH CO LTD | 3 | |
| 13 | CLAPP BRIAN C | 2 | |
| 14 | CHAN WALLACE C | 2 | |
| 15 | STULC JEFFREY F | 2 | |
| 16 | ROLFES NEAL G | 2 | |
| 17 | KISMARTON MAX U | 2 | |
| 18 | British Aerospace PLC | 2 | |
| 19 | Wuhu Chuanglian New Materials Technology Co Ltd | 2 | |
| 20 | WESTRE WILLARD N | 2 |
Boeing’s dominant position, reinforced by the most-cited patents on composite wing and fuselage joining, suggests that challengers face significant freedom-to-operate constraints in core structural airframe design and must navigate around a dense prior-art wall.
Filing activity in the most recent 18–24 months is likely under-counted due to standard publication lag and should not be read as a further structural decline. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing activity peaked in 2018 and has eased; airframe structures dominate the technology mix
The annual trend chart captures the rise and retreat of filing volume, while the technology composition chart shows which IPC branches anchor the corpus and which remain sparsely covered.
Annual filing trend
Filings reached their highest point in 2018 with 27 records, followed by a sharp reduction beginning in 2019. A partial recovery appeared in 2021 before volume compressed again. Years 2024–2026 are materially under-counted due to publication lag and should not be interpreted as representing the true current filing rate.
↗ Hover for values · click a bar to ask EurekaTechnology composition
B64C (Aeroplanes & helicopters) dominates the corpus with 196 records, reflecting the airframe-structural focus of the field. B29C (Shaping of plastics) at 69 records and B64F (Ground installations for aircraft) at 59 records form a secondary tier. Branches such as B32B (Layered products & laminates), B64D (Aircraft equipment), and F02B (Internal-combustion engines) each carry fewer than 15 records, signalling areas of relative sparsity adjacent 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.
Composite wing structure and methods of manufacture
A method of manufacturing a tiltrotor wing structure including providing a spar mold having a plurality of bores extending from an exterior surface of the mold to an interior surface of the mold, the plurality of bores corresponding to a plurality of primary coordination holes in a spar member, the spar mold having a periphery defined by a top edge, a… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Splice joints for composite aircraft fuselages and… | 299 |
| 2 | Monolithic composite wing manufacturing process | 238 |
| 3 | Composite wing and manufacturing process thereof | 176 |
| 4 | Method of making composite aircraft wing | 141 |
| 5 | Single piece co-cure composite wing | 123 |
| 6 | Splice joints for composite aircraft fuselages and… | 118 |
| 7 | Composite for aircraft wing and method of making | 102 |
| 8 | Single piece co-cure composite wing | 75 |
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 landscape structure means for composite airframe R&D investment
Three structural features — lifecycle stage, concentration, ecosystem collaboration, and geographic spread — define the investment risk and opportunity profile for new entrants and incumbents alike.
Field is in decline: annual volume has eased sharply from its 2018 peak
The lifecycle evidence indicates a Decline stage, with annual filings easing back from the 2018 peak. A roughly 50% contraction in the recent window relative to the prior period confirms that the core structural airframe filing wave has passed. New entrants should assess whether unmet technical sub-problems — rather than broad airframe claims — remain viable entry points.
Lifecycle: DeclineTop five filers hold 65% of the hundred largest filers’ output
Boeing’s 97-record position at the top of the ranking, paired with a 65% share among the top hundred filers, signals that the dominant design paradigm is well-staked. Bell Helicopter Textron, Rocky Mountain Composites, and Textron Innovations occupy a mid-tier that is far behind the leader. Investors should map claim scope carefully before committing to incremental improvements near Boeing’s core composite wing and fuselage families.
High concentrationOne documented co-filing partnership: Bombardier and Short Brothers
The evidence shows a single co-applicant relationship: Bombardier Inc and Short Brothers PLC filed four patent records jointly. This limited collaboration signal suggests the broader ecosystem operates largely on a proprietary basis, with no visible open-innovation consortia in the corpus. Partnerships outside this dyad are not evidenced here.
Ecosystem: thinUnited States is the primary filing jurisdiction; Europe and China form a secondary tier
The United States leads all jurisdictions with 71 patent records, consistent with Boeing’s dominance and the concentration of U.S. aerospace primes. Europe (EPO) follows at 39 records and China at 35, reflecting both Airbus-ecosystem filings and growing Chinese applicants such as Jiangsu Changtan Robot and Foshan Shenfeng Aviation. Canada, WIPO PCT, Japan, and Australia round out the coverage map.
US-led, global reachGo 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 |
|---|---|---|
| Bombardier Inc | Short Brothers PLC | 4 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Boeing leads on airframe structures; Bell Helicopter and Rocky Mountain Composites anchor the challenger tier
The leader-challenger gap is wide: Boeing’s 97 patent records are more than six times the next-ranked filer. Challenger positions are spread across rotorcraft, process-focused composite forming, and UAV structures.
The Boeing Company
Boeing holds 97 patent records, anchored in B64C airframe structures, B64C wing and fuselage geometry, and B64F maintenance and repair. Recent filing momentum shows a significant contraction (-64% versus the prior period), consistent with the broader field’s post-peak decline rather than a strategic retreat from all composite airframe work.
patent records: 97Bell Helicopter Textron Inc
Bell Helicopter Textron holds 13 patent records, with emphasis on rotorcraft airframe structures (B64C), composite forming processes (B29C), and maintenance installations (B64F). Its portfolio is rotorcraft-oriented, differentiating it from Boeing’s fixed-wing dominance. Momentum data for Bell is not separately broken out in the evidence.
patent records: 13| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| The Boeing Company | 5 | ▼ -64% |
Under-served adjacent branches worth monitoring in composite airframe
Several IPC branches appear at low counts relative to the dominant B64C core. These represent observations of relative sparsity; the two highlighted below also carry plausible technical relevance and realistic entry paths for composite airframe specialists.
B32B · Layered products & laminates
With only 14 patent records, the layered-products branch is sparsely covered relative to the 196-record B64C core. Composite airframe performance increasingly depends on engineered laminates with tailored stiffness and damage tolerance — areas where B32B claims could protect novel ply architectures, hybrid material stacks, or adhesive interlayer systems. Entrants with laminate-design or nano-reinforcement expertise could stake non-overlapping positions here.
Search this in Eureka →B64D · Aircraft equipment
B64D (Aircraft equipment) carries only 11 patent records in this corpus, despite the tight integration of structural composites with fuel, electrical, and environmental-control systems in modern airframes. As composite primary structures increasingly become conduits for embedded sensors, wiring, and fluid lines, B64D-adjacent claims on composite-integrated aircraft systems represent a technically plausible and relatively uncontested space.
Search this in Eureka →How leading applicants differ by technology route across composite airframe sub-classes
Route coverage across the main technology branches in the current evidence set.
| Player | B64C 3 · Aeroplanes & helicopters | B64C 1 · Aeroplanes & helicopters | B29C 70 · Shaping of plastics | B64F 5 · Ground installations for aircraft | B64C 27 · Aeroplanes & helicopters |
|---|---|---|---|---|---|
| The Boeing Company | Strong · 47 | Strong · 64 | Moderate · 24 | Strong · 38 | Absent |
| Bell Helicopter Textron Inc | Strong · 22 | Strong · 13 | Strong · 16 | Strong · 15 | Emerging · 2 |
| Rocky Mountain Composites Inc | Strong · 15 | Strong · 9 | Strong · 14 | Absent | Absent |
| Jiangsu Changtan Robot Co Ltd | Strong · 8 | Absent | Absent | Absent | Strong · 14 |
| Rocky Mountain Research Inc | Strong · 3 | Strong · 3 | Strong · 3 | Absent | Absent |
| Foshan Shenfeng Aviation Science & Technology Co Ltd | Strong · 5 | Absent | Absent | Absent | Strong · 3 |
Frequently asked questions
The Boeing Company leads the corpus with 97 patent records, more than six times the next-ranked filer, Rocky Mountain Composites Inc at 15 patent records.
No. The lifecycle evidence places the field in a Decline stage. Annual filing volume peaked in 2018 and has eased materially since. The most recent years (2024–2026) are under-counted due to publication lag, but the overall trend is downward from the peak.
The United States leads with 71 patent records, followed by Europe (EPO) at 39 and China at 35. Canada, WIPO PCT, Japan, and Australia form a secondary tier.
The highest-cited work is titled ‘Splice joints for composite aircraft fuselages’ with 299 citations, followed by ‘Monolithic composite wing manufacturing process’ at 238 citations — both reflecting foundational structural joining and wing fabrication innovations.
B32B (Layered products & laminates) at 14 patent records and B64D (Aircraft equipment) at 11 patent records are the most sparsely covered branches adjacent to the dominant B64C core, making them worth monitoring for uncontested filing opportunities.
Evidence of co-filing collaboration is limited: only one partnership is documented — Bombardier Inc and Short Brothers PLC with four jointly filed patent records. The broader ecosystem appears to operate on a largely proprietary basis.
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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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