Hydrocyclone Classification Patents: Leaders & White Space 2026
Hydrocyclone classification patents: who holds the ground and where it is still open
Filing has cooled from its 2019 peak of 240 records. annual filings for the complete-year window fell from 81 in 2021 to 42 in 2024, a 48% drop, though 2025-2026 figures are still filling in. Annual filings climbed from 205 in 2017 to a peak of 240 in 2019, then declined through the complete-year window, falling from 81 in 2021 to 42 in 2024 — a 48% drop. Because publication lags filing by roughly 18 months, 2025 and 2026 counts are still incomplete and should not be read as a continuing slide.
- 1VULCO4.2%
- 2FORET PLASMA LABS LLC3.8%
- 3EASTMAN CHEM CO3.3%
- 4METSO SWEDEN AB1.8%
- 5WEIR MINERALS AUSTRALIA LTD1.8%
See the full hydrocyclone classification 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 about hydrocyclone classification patents
Who are the leading patent holders in hydrocyclone classification?
The dataset ranks 100 companies by patent family count, with the leader holding 131 records out of 3,141 total. The top 5 assignees combined account for only 14.8% of all records, so no single company controls the field the way a leader might in a more concentrated technology area. The ranking spans mining equipment manufacturers, oil and gas process licensors, and chemical processing firms, reflecting how broadly hydrocyclone technique is used across industries.
Is hydrocyclone classification patent filing growing or shrinking?
Filing peaked at 240 records in 2019 and declined through the most recent complete year, falling from 81 in 2021 to 42 in 2024 — a 48% drop. Because patent publication typically lags filing by about 18 months, the partial figures for 2025 and 2026 understate actual filing activity and should not yet be read as confirmation the decline is continuing. Several previously active assignees show zero filings in the latest tracked year, consistent with this broader cooling.
What technology areas dominate hydrocyclone classification patents?
Cyclone separator design, classified under IPC subclass B04C, appears in 46.3% of the 3,141 records in scope, making it the single largest technology cluster. General separation processes (B01D) follow at 28.2%. Adjacent applications — water treatment, wet solids separation, drilling, paper-stock treatment and flotation — each account for roughly 5-12% of records, marking where hydrocyclone technique crosses into other process industries rather than dominating them.
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 Hydrocyclone Classification 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.