Screening Equipment Patents: Top Companies & Filing Trends 2026
- Filing has already peaked. Records rose to 831 in 2023 and the 2022 midpoint of 679 shows growth flattening rather than accelerating into the most recent years.
- No single filer dominates. The leader holds 32 records and the top 5 assignees combined account for just 2.3% of all 5,464 records in scope — this is a fragmented field, not a gated one.
- Filing is overwhelmingly China-centric. 5,329 of the receiving-office filings are in China, dwarfing Japan, the US, EPO, Australia and the UK combined.
What the screening and classification equipment patent record shows
Screening and classification equipment covers the hardware that separates bulk material by size or density: vibrating screens, hydrocyclone classifiers, and the wear liners, screen decks and drive mechanisms that keep them running under abrasive load. The dataset behind this page spans 5,464 published records filed between 2015 and mid-2026, indexed against IPC classes for sieving and sorting (B07B), crushing and grinding (B02C), and cleaning equipment (B08B), among others. Publication lags filing by roughly 18 months, so the 2026 figure in any trend line understates real activity.
The record set is dominated by B07B sieving-and-sorting claims, present in almost every filing, with secondary claim activity spilling into crushing, conveying, drying and vibration-damping hardware. That spillover is where the interesting design-around opportunities sit, because a screen deck patent rarely claims the drive spring or the downstream conveyor that determines throughput in practice.
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Filing trend and technology composition
Two views of the same 5,464-record corpus: how filing volume has moved year over year, and which IPC subclasses carry the claim density.
Filing trend, 2017–2026
Annual filings climbed from 162 in 2017 to a peak of 831 in 2023, then began easing off; 2026 shows 18 records but the year is only partially published, and the 2022 midpoint of 679 already signals the growth curve had flattened before the peak.
IPC subclass distribution
B07B (sieving and sorting) appears in 99.6% of the 5,464 records in scope, confirming the search scope itself; the more informative signal is the secondary classes — B02C crushing at 7.8%, B08B cleaning at 7.2%, B65G conveying at 4.1% — which mark where screening hardware claims overlap adjacent equipment categories. Because a single record can carry multiple IPC classes, these shares are read against the full record total, not against each other.
Shares are the percentage of the 5,464 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Screening and Classification Equipment with Eureka
This page is one run against one query. Ask Eureka your own question about screening and classification equipment and every answer comes back with the patent numbers behind it.
Try EurekaA representative claim in force
Wave-shaped polyurethane high-frequency linear vibrating screen mesh
Filed by Anhui Fangyuan Yizhi Screening Technology, this record claims a screen mesh built from wave-shaped, injection-molded polyurethane pieces arranged so material rolls forward in a wavy path rather than a flat one. Clamping grooves in a side blind area let the mesh buckle-fit onto rail seats on a screening machine's beam, and the screen-gap direction is set to align with material flow to improve layering and screening effect.Filed 2022-11-03 · published as US20220347722A1
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US8002116B1 | Vibrating stackable fine industrial mineral high speed screening unit | 77 |
| 2 | US5749471A | Vibrating screen | 67 |
| 3 | US4956078A | Feed prestratification attachment for high efficiency vibratory screening | 59 |
| 4 | US4065382A | Multiple screen apparatus | 59 |
| 5 | CN107159393A | 一种建筑筛选用双级联动振动筛装置 | 43 |
| 6 | CN104722482A | 两平移一转动三自由度混联振动筛 | 38 |
| 7 | EP0238455A2 | Simple or multiple type vibrating screen | 38 |
| 8 | CN108380482A | 一种机械式黄豆筛选设备 | 29 |
| 9 | CN202539063U | 一种重型多段等厚筛分设备 | 29 |
| 10 | CN108405340A | 一种建筑用多级筛沙设备 | 28 |
Citation counts are a signal of influence within this searched corpus, not of current commercial importance — older US filings accumulate citations simply by being available longer.
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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Browse MCP servers →What the numbers mean for a filing decision
Three figures worth sitting with before deciding where to file or design around.
No gatekeeper controls this space
With the leader at 32 records and the top 5 combined holding only 2.3% of all 5,464 records in scope, no single assignee has cornered core screening claims. That is a structural fact, not a temporary gap — a long tail of single- and few-filing entrants has persisted across the whole 2015-2026 window.
Growth has already crested
Filings rose from 162 in 2017 to a peak of 831 in 2023, but the 2022 midpoint of 679 shows the climb had already begun flattening before the peak year. Recent-year momentum by assignee confirms this: several previously active filers, including some with double-digit historical totals, show zero or negative year-on-year filing in the latest tracked year.
Filing activity is concentrated in one jurisdiction
China accounts for 5,329 of the receiving-office filings tracked here, against 28 in Japan, 25 in the US, 14 at the EPO, 13 in Australia and 12 in the UK. Any competitive read of this field has to start from Chinese domestic filing behaviour rather than treating it as a globally even market.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to screening and classification equipment, with the prior art for and against each one.
Assignee landscape: fragmented, not gated
The ranked leaders hold small individual shares, and momentum data suggests even the largest historical filers have slowed. That combination — fragmentation plus flattening — is what makes the white-space chips below worth checking before filing.
A modest lead, not a moat
The single leading assignee holds 32 records out of 5,464 in scope — enough to matter in freedom-to-operate searches on core screen-deck claims, but far short of the kind of concentration that would justify avoiding a subfield entirely.
The drop-off is gradual
Fifth place holds 17 records and tenth place holds 12 — a gentle taper rather than a cliff, consistent with a technology area where wear-liner, screen-mesh and classifier-geometry claims are being filed independently by many regional manufacturers rather than a handful of majors.
Several historical filers have gone quiet
Recent-year momentum shows multiple assignees with prior filing history recording zero filings in the latest tracked year, some down 100% year-on-year. That is consistent with the broader plateau in filing volume rather than a sign that any one competitor has withdrawn from the field.
| Assignee | Recent year | YoY |
|---|---|---|
| China University of Mining and Technology | 1 | -50% |
| Weiling New Energy Co., Ltd. | 0 | — |
| Henan Winner Vibrating Equipment Co., Ltd. | 0 | -100% |
| Sandvik Intellectual Property AB | 0 | — |
| Jiangsu University | 0 | -100% |
| Xinxiang Gaofu Machinery Co., Ltd. | 0 | — |
| Tangshan Lukai Technology Co., Ltd. | 0 | — |
| Anhui University of Science and Technology | 0 | — |
Where to take this analysis
The figures above establish the shape of the field. Turning that into a filing or freedom-to-operate decision means drilling into specific claim language and specific assignees.
Run a freedom-to-operate check on wear-liner and screen-mesh claims
The under-claimed chips above point to specific claim geometries, not whole subfields — worth verifying against the full claim text before committing engineering time.
Explore in EurekaTrack the assignees showing negative momentum
Several historically active filers show flat or negative year-on-year filing; confirm whether that reflects portfolio pruning or a shift to trade-secret protection.
Explore in EurekaWatch the China-to-rest-of-world filing ratio
With 5,329 of receiving-office filings in China against low double digits elsewhere, monitor whether Chinese filers begin pursuing parallel protection abroad.
Explore in EurekaCommon questions on screening and classification equipment patents
No single company dominates this field. The top-ranked assignee in this dataset holds 32 of the 5,464 records in scope, and the top 5 assignees combined hold only 2.3% of all records. This is a genuinely fragmented landscape with a long tail of regional manufacturers and research institutions, each filing a handful of records, rather than a market controlled by a few large portfolios.
Filing volume rose steadily from 162 records in 2017 to a peak of 831 in 2023, but the 2022 midpoint of 679 already shows the growth curve flattening before that peak. Recent-year momentum data reinforces this: several previously active filers recorded zero filings in the most recent tracked year. Treat the latest year's figure as understated too, since publication typically lags filing by about 18 months.
The core class is B07B, covering sieving and sorting, which appears in 99.6% of the 5,464 records in scope. Secondary classes capture where screening hardware overlaps other equipment: B02C (crushing and grinding) at 7.8%, B08B (cleaning) at 7.2%, B65G (conveying) at 4.1%, and smaller shares in separation, vibration damping and drying. Because records can carry multiple IPC codes, these percentages are each measured against the same 5,464-record total and are not mutually exclusive.
The gaps sit at the intersection of the dense B07B core and its lower-density secondary classes: wear-liner material composites, cut-size d50 control geometry, screen-mesh blinding and pegging mitigation, and hydrocyclone underflow classification all show lower claim density than the core screen-deck mechanics. These are not unclaimed, but they carry far fewer competing filings than the primary screening mechanism claims, making them a more efficient place to seek differentiated protection.
Of the receiving offices tracked here, China accounts for 5,329 filings against 28 in Japan, 25 in the US, 14 at the EPO, 13 in Australia and 12 in the UK. This reflects both the concentration of screening and classification equipment manufacturing in China and the domestic-first filing behaviour common among the many regional manufacturers that make up this field's long tail, rather than a lack of international interest in the underlying technology.
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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.