Bulk Material Dust Suppression Patents: Who Leads, Where Gaps Are 2026
- 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.
- Filing peaked in 2022 at 5 records, then eased to 2021→2024's -33% span; 2025-2026 figures are still filling in as publications catch up to filings.
- Separation processes anchor the field: B01D covers 51.6% of the 31 records, more than double the next two IPC subclasses combined at 22.6% each.
Filing growth compares 2021 (3 records) with 2024 (2) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 31 records in scope (CR5), not by the ranked leaders only.
What bulk material dust suppression patents actually cover
Bulk material dust suppression sits at the intersection of mechanical spraying equipment, separation chemistry and site-level environmental monitoring. The 31 records in scope span fog cannon and atomizing nozzle hardware, chemical binder and moisture-addition formulations, and fugitive dust monitoring tied to automated spray triggers. Filers range from state-owned power generators and mining research institutes to civil engineering contractors, reflecting the fact that dust suppression is adopted wherever bulk solids are handled outdoors — ports, mine transfer points, construction sites and thermal power plant coal yards.
China accounts for 24 of the tracked filings by receiving office, with the remainder spread thinly across India, Australia, the United Kingdom, Luxembourg and the United States. That distribution says less about where the technology is used and more about where formal patent protection is currently being pursued for it.
Filing trend and technology composition
The dataset covers 31 published records filed or published between 2015 and mid-2026, indexed by IPC subclass and receiving office.
A single peak year, then a lag-affected tail
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.
Separation and spraying dominate, monitoring is thin
B01D (separation processes, including filtration) appears in 51.6% of the 31 records, making it the largest single technology bucket. B05B (spraying and atomising) and B65G (conveying and material handling) each cover 22.6%. Monitoring and analysis classes such as G01N sit far behind at 9.7%, and mine-safety-specific ventilation (E21F) and thermal power plant integration (F01K) each account for 6.5%. Because records can carry multiple IPC codes, these shares add up to more than 100% of the record total, not to a partition of it.
Shares are the percentage of the 31 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Bulk Material Dust Suppression with Eureka
This page is one run against one query. Ask Eureka your own question about bulk material dust suppression and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited records and a recent representative filing
Mining intelligent closed dust suppression device for a scraper-to-belt conveyor transfer point
Filed by Shandong University of Science and Technology and published in mid-2026, this filing targets the transfer point between a scraper conveyor and a belt conveyor — a specific, high-turbulence junction in bulk mining material handling where dust generation concentrates. The abstract text available for this record is fragmentary in the underlying publication.Abstract text as published is partial; refer to the full specification for claim scope.
View full record| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | CN106525677A | 工地扬尘监测与自喷淋降尘系统 | 15 |
| 2 | CN113144793A | 一种多功能抑尘车及其雾炮 | 7 |
| 3 | CN204338371U | 智能射雾抑尘系统 | 7 |
| 4 | CN209333416U | 远程智能型微雾抑尘系统 | 4 |
| 5 | CN211274029U | 静电吸附抑尘系统 | 3 |
| 6 | CN120681588A | 一种卸船机物料转运过程自适应柔性抑尘系统 | 2 |
| 7 | CN217229160U | 基于粉尘浓度检测的煤炭翻堆皮带线智能抑尘系统 | 2 |
| 8 | CN216726402U | 一种微纳气泡超声干雾抑尘系统 | 2 |
| 9 | CN211569496U | 一种发电厂输煤导料槽气液雾化抑尘系统 | 2 |
| 10 | IN201811014398A | An intelligent dust suppression system for industrial applications | 2 |
Citation counts reward older filings simply because they have had more time to be cited; read them as a signal of influence within this searched corpus, not as a ranking of current technical importance.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. Each row carries its publication number; clicking a row searches Eureka by that number.
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Three patterns stand out once the assignee ranking, filing trend and IPC composition are read together: this is a field without a dominant blocking player, with equipment claims outweighing monitoring claims, and with a filing history too short to call a slowdown.
No single assignee controls the field
The leader holds only 2 of the 31 records, and even the combined top 10 reach just 38.7% of all filings. For a new entrant, this means freedom-to-operate risk is spread across many small portfolios rather than concentrated behind one or two blocking patent families.
Separation hardware is the dominant claim territory
More than half of all 31 records fall under B01D, roughly double the share held by spraying (B05B) or conveying (B65G) classes. Claim drafting around filtration and separation mechanisms is the most contested ground; monitoring-triggered spraying (G01N-linked) is comparatively open.
Activity peaked once, then the record thins toward the present
Filings built steadily to a 2022 peak before easing off, with a -33% change measured from 2021 to 2024. Because 2025-2026 publications are still arriving, this reads as a maturing filing wave rather than a confirmed decline.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to bulk material dust suppression, with the prior art for and against each one.
A fragmented field of research institutes, contractors and power generators
The 31 records in scope are held across power generation companies, civil engineering and metallurgical contractors, environmental technology firms and academic or government research institutes — a mix consistent with a technology that gets adopted site-by-site rather than standardised by a handful of equipment makers.
The largest filer holds a small lead
The top-ranked assignee accounts for just 2 of the 31 records, only slightly ahead of the field. This is not a portfolio large enough to dictate design choices for the rest of the industry.
Filing activity is concentrated by geography, not by company
China accounts for 24 of the tracked records by receiving office, with India, Australia, the UK, Luxembourg and the US each contributing a handful. Regional infrastructure and mining programmes appear to be the primary driver of where protection is sought.
Even active historical filers show no latest-year activity
Several assignees with prior filings, including research institutes and port and cement operators, show zero records in the latest tracked year. Given publication lag, this likely reflects incomplete recent data rather than an exit from the space.
| Assignee | Recent year | YoY |
|---|---|---|
| Council of Scientific and Industrial Research | 0 | — |
| Huaneng Xindian Power Generation Co., Ltd. | 0 | — |
| Zhengzhou Yutong Heavy Industry Co., Ltd. | 0 | — |
| Qinhuangdao Port Co., Ltd. | 0 | — |
| Qinhuangdao Deshen Environmental Protection Technology Co., Ltd. | 0 | — |
| Shijiazhuang Quzhai Cement Co., Ltd. | 0 | — |
| Hunan Jiujiu Intelligent Environmental Protection Co., Ltd. | 0 | — |
| Henan Baosheng Precision Machinery Co., Ltd. | 0 | — |
Where to take this analysis
The figures above establish scale and shape; the next questions are about specific claims and specific competitors.
Check freedom-to-operate against the most-cited records
The five most-cited filings, several from Chinese assignees working on automated spray and fog cannon systems, define the densest prior art around trigger-linked spraying. Any new spray-control claim should be checked against these first.
Explore cited recordsModel the under-claimed branches before drafting
Monitoring-linked triggers, wind fencing and moisture-limit control show far fewer filings than core separation hardware. A claim built around sensor-triggered chemical binder dosing has more room to stand apart.
Map white spaceCommon questions on dust suppression patents
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.
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.
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.
The most under-claimed areas relative to the dense B01D separation and B05B spraying territory include fugitive dust monitoring triggers, stockpile crusting agents, wind fence design variants, moisture-addition limit control and electrostatic dust adsorption. Each of these appears in only a small fraction of the 31 tracked records compared with core separation and spraying hardware. A first claim in one of these branches, for example a sensor-triggered chemical binder dosing method tied to a specific moisture threshold, would face comparatively less prior art than a new nozzle or filtration design.
By receiving office, China accounts for 24 of the 31 tracked records, far ahead of India with 3, and single filings each in Australia, the United Kingdom, Luxembourg and the United States. This concentration likely reflects the scale of mining, construction and coal-fired power infrastructure in China rather than a technology developed exclusively there. Companies evaluating this space outside China should note that most prior art protection currently sits in Chinese filings, which affects both search strategy and freedom-to-operate assessment.
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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.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.