Helicopter Main Gearbox Patents: Who Leads, Where the Gaps Are 2026
Helicopter main gearbox and drive train patents: who holds the claims and where filing has stopped
88.9% concentration. The top five assignees account for 24 of the 27 records in scope, with a leader at 13 filings and a fifth-place holder at just 2. Filings peaked at 13 records in 2018 and had fallen to 0 in the tracked 2021-to-2024 comparison, a -100% change over that span. Because publication lags filing by about 18 months, the years closest to the 2026 cut-off should be read as still filling in rather than as a genuine drop to zero.
- 1贝尔直升机泰克斯特龙公司48.1%
- 2欧洲直升机公司14.8%
- 3HILL GRP TECH LTD11.1%
- 4特克斯特朗创新有限公司7.4%
- 5WESTLAND PLC7.4%
See the full helicopter main gearbox and drive train 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 on this field
Who are the leading patent holders in helicopter main gearbox technology?
The ranked set for this field contains 8 assignees covering all 27 records in scope, and the top five of them combined account for 24 of those 27 records, or 88.9%. The leading assignee alone holds 13 records, more than the next four combined, and filing weight drops sharply after the top few names. This means the field is not a level playing field: a small number of established rotorcraft manufacturers and their affiliated entities hold most of the documented claims.
Is patent filing in helicopter drive train technology still growing?
No, based on the tracked figures filing has not grown recently. The peak year in this dataset was 2018 with 13 records, and the tracked three-year comparison shows filings falling from 3 in 2021 to 0 in 2024, a -100% change over that span. 2024 is the most recent year that can be treated as complete, since publication typically lags filing by about 18 months, so 2025 and 2026 figures are still filling in rather than confirming a continued decline.
What does US20200109777A1 actually cover?
This Textron Innovations filing, published 2020-04-09, covers an aircraft gearbox with a housing split by a barrier into two compartments, each holding drive system components or gears served by partially independent lubrication subsystems. The design targets continued operation after a partial loss of lubrication rather than preventing the loss itself. Anyone drafting a compartmentalised or dual-subsystem lubrication architecture for a helicopter gearbox should review this filing’s specific claim boundaries before finalising claim language.
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 Helicopter Main Gearbox and Drive Train 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.