Irrigation Water Filtration Patents: Leaders & Filing Trends 2026
- Concentrated at the top. The leading assignee alone accounts for 8 of the 33 records in scope, and the top 5 combined hold 57.6% of all records.
- Filtration and treatment classes dominate. B01D (separation processes) and C02F (water treatment) each cover 57.6% of the 33 records, with every other IPC subclass under 16%.
- US filing is the centre of gravity. 25 of the receiving-office filings sit in the United States, well ahead of WIPO (3), Canada (2), India (2) and Brazil (1).
Top-5 share is the combined record count of the five largest assignees divided by all 33 records in scope (CR5), not by the ranked leaders only.
What the dataset covers
This landscape draws on 33 published records matching irrigation-specific filtration terms — sand media filters, disc filters, screen mesh sizing, backwash cycles and the pressure-differential and algae-load triggers that govern when a filter needs servicing — filed or published between 2015 and mid-2026. It is a narrow, applied field: the search string ties general filtration hardware to irrigation-specific operating conditions like iron precipitation and algae load, which keeps the corpus small relative to filtration patenting as a whole.
Coverage runs to 2026-07-31. Because publication typically lags filing by around 18 months, the most recent one to two years in any trend line will understate real filing activity rather than reflect an actual slowdown.
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Filing trends and technology composition
Two views of the same 33-record dataset: how filing activity has moved year over year, and which IPC subclasses the records fall into.
Filing trend, 2017-2026
Filings run from 2 in 2017 to a peak of 4 in 2023, with 1 recorded so far in 2026. With fewer than four complete years available once publication lag is factored in, a growth rate cannot be responsibly computed from this trend.
IPC subclass composition
B01D (separation processes) and C02F (water and wastewater treatment) each appear in 19 of the 33 records (57.6%), confirming that most filings are framed as filtration or treatment hardware rather than as irrigation equipment per se. A01G (horticulture and forestry) trails at 15.2%, with F04B (pumps), G05D (control systems), A01C, C05F and E03B each appearing in a small minority of records. Because a single record can carry multiple IPC codes, these shares sum to more than 100% of the 33 records.
Shares are the percentage of the 33 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Irrigation Water Filtration with Eureka
This page is one run against one query. Ask Eureka your own question about irrigation water filtration and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited records in the corpus
US7553407B2 — Portable water quality monitoring and treatment system
A portable system for on-site monitoring and treatment of water comprising a protective enclosure positioned near a site of collected water, an internal fluid flow system with a dirty-water conduit feeding a pair of outlets and a return conduit feeding filtered and clean water outlets. Probes in the conduits monitor fluid parameters and report them to a controller, which compares measured levels against predetermined acceptable thresholds.Filed by Western Oilfields Supply Co., published 2009-06-30.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US6568416B2 | Fluid flow control system, fluid delivery and control system for a fluid delivery line, and method for contro… | 267 |
| 2 | US20020117214A1 | Fluid flow control system, fluid delivery and control system for a fluid delivery line, and method for contro… | 151 |
| 3 | US20090294356A1 | Backwashing unsaturated wastewater filter | 52 |
| 4 | US3817378A | Method and apparatus for filtering solids from a liquid effluent | 44 |
| 5 | US20140263000A1 | Methods and Apparatuses for Water Treatment | 15 |
| 6 | US20190062178A1 | Methods for filtering effluent water for recycled use | 14 |
| 7 | US7914678B2 | Backwashing unsaturated wastewater filter | 11 |
| 8 | US7431835B2 | Portable water quality monitoring and treatment system | 11 |
| 9 | US20070090056A1 | Portable water quality monitoring and treatment system | 11 |
| 10 | US11565201B1 | Automatic flushing device for screen filter of biogas slurry drip irrigation system and use thereof | 8 |
Citation counts accumulate over time, so older records are structurally favoured; treat this as a signal of influence on later filings rather than of current commercial relevance.
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Three patterns stand out once the ranking, the IPC breakdown and the citation table are read together.
A small group holds most of the field
The top 5 assignees combined account for 19 of the 33 records in scope, or 57.6% of the total, with the leader alone holding 8. The top 10 extend that to 27 records, or 81.8% of the field, leaving a genuine long tail of single- or double-filing entrants below that line.
Filtration hardware and water treatment are the same claim space
B01D and C02F each cover 57.6% of the 33 records, and the overlap between them suggests most filings are drafted as combined filtration-and-treatment systems rather than as pure mechanical filters. Adjacent classes like A01G, F04B and G05D appear far less often, each under 16% of records.
Older fluid-control filings anchor the citation graph
The two most-cited records in the corpus both concern fluid flow control and pressure oscillation management within a delivery line, cited 267 and 151 times respectively — far ahead of the backwashing and filtration-specific records that follow. That gap points to foundational fluid-control claims sitting underneath much of the later filtration-specific work.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to irrigation water filtration, with the prior art for and against each one.
| Assignee | Co-assignee | Shared families |
|---|---|---|
| TAN AH BENG | RAJU NARAYAN | 2 |
| TAN AH BENG | LEE YEE CHUN | 2 |
| TAN AH BENG | CHANG HUEI MENG | 2 |
| SABOURIN ADAM | BENNETT TYLER | 2 |
| RAJU NARAYAN | LEE YEE CHUN | 2 |
| RAJU NARAYAN | CHANG HUEI MENG | 2 |
| LEE YEE CHUN | CHANG HUEI MENG | 2 |
The dataset records 7 co-assignee pairs, with the strongest recurring pairing appearing across three separate co-filed record pairs — a modest but real signal of joint development rather than fully independent filing.
Who is filing, and where the gaps sit
The ranking covers 19 companies across the 33 records in scope. Momentum by assignee shows zero filings in the latest year across every entity checked — consistent with publication lag rather than a real pullback, since a full year of recent filings has not yet cleared publication.
One filer sets the pace
The leading assignee holds 8 of the 33 records in scope, nearly double the next tier down, and anchors a portable on-site water monitoring and treatment approach that pairs filtration hardware with parameter-based controls.
A shallow drop-off after the leader
Filing counts fall quickly after the top position: fifth place holds only 2 records and tenth place holds 1, meaning most of the ranked field is made up of assignees with a single filing rather than a sustained program.
Limited but repeated joint filing
One individual inventor appears across three of the strongest co-assignee pairings in the dataset, each paired with a different named collaborator — a pattern more typical of a small technical team than of a corporate joint-venture filing strategy.
| Assignee | Recent year | YoY |
|---|---|---|
| WESTERN OILFIELDS SUPPLY CO | 0 | — |
| CRESCENT GDG FILTER VENTURE LLC | 0 | — |
| PUMP USA LLC | 0 | — |
| BEGGS ROBERT A | 0 | — |
| TAN AH BENG | 0 | — |
| SABOURIN ADAM | 0 | — |
| RAJU NARAYAN | 0 | — |
| LEE YEE CHUN | 0 | — |
Where to take this analysis
The dataset points to a concentrated leader group, a filtration-and-treatment class overlap, and several thinly claimed adjacent branches. Turning that into a filing or freedom-to-operate decision means going deeper on specific claims.
Map claim scope on the leading portfolio
Run a claim-by-claim comparison against the leading assignee's portfolio before drafting in the pressure-differential or backwash-control space, since that filer holds nearly a quarter of all records in scope.
Explore claims in EurekaCheck the under-claimed branches for real freedom
The thin IPC coverage in classes like A01C and G05D suggests open space, but thin coverage in a narrow search string can also mean the terms are drafted differently elsewhere. Verify before committing.
Run a deeper search in EurekaCommon questions on irrigation water filtration patents
The ranked dataset covers 19 companies across 33 records in scope. One assignee leads with 8 records, well ahead of the field, and the top 5 combined hold 57.6% of all records. Below the top 10 — which together hold 81.8% of records — the ranking thins into single-filing entrants, so the field has a concentrated leadership group sitting above a long tail rather than dozens of comparably sized competitors.
The two dominant IPC subclasses are B01D (separation processes, including filtration) and C02F (water and wastewater treatment), each present in 57.6% of the 33 records, indicating most filings combine mechanical filtration with a water-treatment framing. Supporting classes include A01G (horticulture and forestry, 15.2%), F04B (pumps, 12.1%) and G05D (control systems, 6.1%), with A01C, C05F and E03B each appearing in a single record.
The trend runs from 2 filings in 2017 to a peak of 4 in 2023, with 1 recorded so far in 2026. Because publication lags filing by roughly 18 months, the last one to two years in any dataset understate true activity, and there are fewer than four complete years of data available once that lag is accounted for — so a reliable growth rate cannot be stated from this evidence.
US7553407B2, assigned to Western Oilfields Supply Co. and published in 2009, claims a portable system combining a protective enclosure, dual fluid conduits for dirty and clean water, in-line probes, and a controller that compares measured parameters against preset thresholds. It is a monitoring-plus-treatment architecture rather than a pure filtration mechanism, which matters for anyone designing a combined sensing-and-filtration product for field deployment.
The IPC composition shows several adjacent classes with thin coverage relative to the core B01D and C02F classes — A01C (planting and sowing), C05F (organic fertilisers) and E03B (water supply and distribution) each appear in only a single record. Combined with the recurring but narrow gap around algae-load-triggered backwash control and automated mesh-size adjustment in disc filters, these are the areas most likely to have room for a differentiated first claim, though confirming that requires a dedicated freedom-to-operate search beyond this dataset's search terms.
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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.