Bulk Material Dust Suppression Patents: Who Leads, Where Gaps Are 2026
Bulk material dust suppression patents: filing trends, leading assignees and open claim space
Concentration is shallow. the top 5 assignees together hold 22.6% of all 31 records in scope, and the top 10 only reach 38.7% — no single filer dominates this field. Filings rose from zero in 2017 to a peak of 5 records in 2022, then declined toward 2024. The 2021-to-2024 span shows a -33% change, but 2025 and 2026 figures are still incomplete because publication typically lags filing by around 18 months — treat the most recent two years as understated rather than as evidence of a slowdown.
- 1HUANENG XINDIAN POWER GENERATION CO LTD2
- 2COUNCIL OF SCI & IND RES2
- 3CHINA FIRST METALLURGICAL GROUP1
- 4NANTONG INST OF TECH1
- 5天科院环境科技发展(天津)有限公司1
See the full bulk material dust suppression 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 dust suppression patents
Who are the leading patent holders in bulk material dust suppression?
No single company dominates this field. Across the 31 records tracked, the leading assignee holds only 2 records, and the combined top 5 assignees account for 22.6% of all filings, rising to 38.7% for the top 10. This is a fragmented landscape shaped by many state research institutes, power generators, mining contractors and environmental engineering firms filing small numbers of patents each, rather than one or two companies building a dominant portfolio. For freedom-to-operate purposes, this means risk is distributed rather than concentrated behind a handful of blocking patents.
What technologies are covered by dust suppression patents?
The dataset spans mechanical spraying equipment such as fog cannons and atomizing nozzles, chemical binder and moisture-addition formulations, wind fencing, and monitoring systems that trigger automated spraying. IPC data shows B01D (separation processes) is the largest single technology bucket at 51.6% of the 31 records, with spraying (B05B) and conveying (B65G) each covering 22.6%. Monitoring and analysis technology (G01N) is comparatively thin at 9.7%, suggesting sensor-triggered control is less crowded than the mechanical hardware itself.
Is patent filing activity in dust suppression increasing or slowing down?
Filing activity rose from zero in 2017 to a peak of 5 records in 2022, then eased toward 2024, with the 2021-to-2024 span showing a -33% change. However, publication typically lags actual filing by around 18 months, so the 2025 and 2026 figures in this dataset are still incomplete. It would be premature to call this a confirmed decline; the more accurate read is that the visible filing wave peaked in 2022 and the recent tail is simply not fully published yet.
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 Bulk Material Dust Suppression 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.