Rotor Hub Patents: Who Leads, Where the Gaps Are 2026
Rotor Hub and Swashplate Mechanism Patents: Concentration at the Top, a Long Tail Below
71.3% of all 913 records sit with just five assignees, so most of the claim space around hub and swashplate architectures is already staked out by a handful of airframers. Filings rose to a peak of 33 in 2021, then fell to 2 by 2024 — a 94% drop over that three-year span. 2025 and 2026 figures are still incomplete due to publication lag and should not be read as a continued decline.
- 1UNITED TECH CORP202
- 2SIKORSKY AIRCRAFT CORP170
- 3AIRBUS HELICOPTERS DEUT GMBH165
- 4BELL HELICOPTER TEXTRON INC77
- 5THE BOEING CO37
See the full rotor hub and swashplate mechanisms analysis in Eureka
- The complete ranking, not just the top five
- Every IPC branch with its share of the corpus
- The most-cited records, and where claim space is still thin
Common questions about rotor hub and swashplate patents
Who holds the most patents on rotor hub and swashplate mechanisms?
One assignee leads clearly with 202 of the 913 records in scope, more than five times the tenth-place count of 15. The top five assignees combined hold 651 records, or 71.3% of all records in scope, so filing activity is concentrated among a small group of established airframers and their suppliers rather than spread evenly across the field. A freedom-to-operate review in this space should start with that leader’s portfolio before moving to the mid-tier holders.
Is the rotor hub and swashplate patent field still active?
Filing peaked at 33 records in 2021 and had fallen to 2 by 2024, a 94% drop over that span. However, publication typically lags filing by roughly 18 months, so the 2025 and 2026 figures in any pull are understated and should not be read as proof the field has gone cold. A fair read is that the field cooled markedly from its 2021 peak, with the most recent trend still unconfirmed.
What technology areas overlap most with rotor hub patents?
Nearly all records (88.1% of 913) carry the B64C aeroplanes-and-helicopters classification, confirming this is fundamentally airframe-classified art. Smaller but meaningful overlaps appear with springs and vibration dampers (F16F, 9.6%), unmanned aerial vehicles (B64U, 6.4%), clutches and brakes (F16D, 5.6%) and bearings/couplings (F16C, 5.1%). Because a single record can carry multiple IPC classes, these shares add up to more than 100% of the record total.
Disclaimer. This analysis is based on Patsnap Eureka data drawn from a limited snapshot of global patent records and is provided for general information and reference only. Patent data carries inherent limitations — recent filings are under-counted because of publication lag, counts may be on a record or family basis, classification and applicant-name data may contain errors or duplicates, and the underlying search query defines the scope shown — so the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing here is an exhaustive prior-art, novelty, freedom-to-operate or validity search, nor does it constitute legal, financial or professional advice, and it should not be relied upon as such. Verify independently and review with qualified patent and legal professionals before acting on it.
Method: Filing trend and technology composition. Derived from a Patsnap search on Rotor Hub and Swashplate Mechanisms covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish. Every share divides by all records in scope. Data: Patsnap Eureka. See the full landscape report.