Compressor Stall and Surge Control Patents: Top Companies & Trends 2026
Compressor Stall and Surge Control Patents: Who Leads and Where Filing Is Headed
40.1% concentration. The five leading assignees account for 1,340 of the 3,341 records in scope — filing is concentrated at the top, with a long tail of single-digit filers behind them. Annual filings peaked at 209 in 2017. By 2021 the annual count had settled to 125, and by 2024 — the most recent year with a complete publication window — it had fallen to 73, a 42% decline across that three-year span. 2025 and 2026 figures are still incomplete because publication typically lags filing by around 18 months, so those years should not yet be read as a continued decline.
- 1ROLLS ROYCE PLC17.7%
- 2GENERAL ELECTRIC CO9.2%
- 3PRATT & WHITNEY CANADA CORP4.9%
- 4FORD GLOBAL TECH LLC4.5%
- 5GE INFRASTRUCTURE TECH LLC3.8%
See the full compressor stall and surge control 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 landscape
Who holds the most patents in compressor stall and surge control?
The assignee ranking is led by one company with 591 of the 3,341 records in scope, a wide margin over the fifth-place holder’s 126. The leading names are dominated by jet-engine OEMs and industrial gas-turbine manufacturers rather than component suppliers or software firms. The top five assignees together account for 40.1% of all records, so the field is concentrated but not monopolised — a long tail of smaller filers still holds meaningful ground.
Is patent filing in this field growing or slowing down?
Filing peaked in 2017 at 209 records and has since declined, falling from 125 in 2021 to 73 in 2024 — a 42% drop over that three-year window, which is the most recent period that can be treated as complete. The years 2025 and 2026 currently show far lower counts, but that reflects publication lag of roughly 18 months rather than an actual halt in filing activity. Any conclusion about the very latest trend should wait for those years to fill in before being treated as reliable.
What does US20080279676A1 actually cover?
This GE Infrastructure Technology filing claims a start-up method that coordinates inlet guide vane positioning with sequential bleed-valve closing and opening to shift a compressor’s rotating stall window to a higher rotational speed and limit the time spent inside it. It ties two mechanisms — bleed valves and inlet guide vanes — into a single scheduled sequence rather than claiming either independently. Anyone designing a start-up scheduling method that coordinates these two mechanisms in a similar sequence should review this filing’s claim scope directly rather than relying on this summary.
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 Compressor Stall and Surge Control 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.