Constructed Wetland Sensor Monitoring Patents: Leaders & Gaps 2026
- Filing peaked in 2021 at six families and has since flattened rather than climbed, with the 2022 midpoint down to two — this is not a technology in an upswing.
- China accounts for 31 of 32 receiving-office records against a single U.S. filing, meaning almost all recent claim activity sits inside one jurisdiction's examination practice.
- No assignee shows filings in the latest year across the most active names tracked, consistent with a field where individual inventors and small institutes file once and do not return.
What this landscape covers
Constructed wetland sensor monitoring sits at the intersection of engineered water treatment and instrumentation: dissolved oxygen probes, hydraulic performance tracking, and water quality sensor networks applied to constructed, treatment, or engineered wetlands rather than natural ones. The search underlying this page combines wetland-specific title/abstract terms with monitoring-function language, then filters to C02F3/32, G01N33/18, and C02F1/00 — the water treatment, material-analysis, and general water-treatment IPC classes most likely to hold real sensor-integration claims rather than passing mentions.
The 32 families in this dataset run from 2015 through a partial 2026, so the most recent year is understated simply because publication trails filing by roughly a year and a half. What is visible is still informative: this is a narrow, low-volume field dominated by one receiving office, with citation weight sitting on a handful of older records rather than a broad, recent front.
Let an AI agent run this analysis on your own technology
Pick a task. Every answer cites the patents behind it.
Filing trend and technology composition
Two views of the same 32-family dataset: how filing volume has moved year over year, and which IPC subclasses the claims actually sit in.
A flat-to-declining filing curve
Activity rose from zero in 2017 to a peak of six families in 2021, then fell back — the 2022 midpoint of two families is below half the peak, and no tracked assignee filed in the latest year. Read the tail end cautiously: publication lag means 2025-2026 figures will fill in somewhat as later-filed applications publish, but the shape of the decline predates that lag.
Concentrated in water treatment, with thin adjacent branches
C02F (water and wastewater treatment) accounts for 27 of the records, with G01N (material analysis and testing) a distant second at 7. Everything else — marine vessels, filtration, fertilisers, hydraulic engineering, business data processing, and batteries — appears once or twice each, marking those as exploratory rather than established claim territory within this search.
Shares are the percentage of the 32 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Constructed Wetland Sensor Monitoring with Eureka
This page is one run against one query. Ask Eureka your own question about constructed wetland sensor monitoring and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records in this dataset
US9011689B1 — Artificial recharge system
An artificial recharge system and method for recharging an aquifer, combining a constructed wetland, a settling pond, and a porous recharge reservoir. The wetland uses aquatic vegetation to remove sediments and chemicals from surface water before it passes to the settling pond for additional sediment removal, then to the porous recharge reservoir, which is hydraulically connected to the aquifer. Water flows by gravity from the reservoir to the aquifer, with a backflush tube installed within a sand layer to maintain flow.Filed by the U.S. Department of the Interior; the highest-cited record in this dataset at 13 citations.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US9011689B1 | Artificial recharge system | 13 |
| 2 | CN102092855A | 循环强化脱氮双进水人工湿地装置 | 11 |
| 3 | CN111977808A | 一种强化型生物-生态模块化污水处理系统 | 8 |
| 4 | CN203212422U | 自动控制的道路危化品运输事故应急处理系统 | 8 |
| 5 | CN113788542A | 一种半程曝气耦合铁碳的强化脱氮潜流湿地及运行方法 | 6 |
| 6 | CN214528620U | 基于VSFCW-MFC工艺的农村生活污水处理系统 | 4 |
| 7 | CN118150252A | 一种人工湿地水环境生态修复实时监测装置 | 3 |
| 8 | CN112047483A | 一种具有自净功能的河湖生态修复系统及其修复方法 | 3 |
| 9 | CN208883576U | 一种节能变频人工湿地水处理系统 | 3 |
| 10 | CN219455595U | 一种人工湿地水质监测装置 | 2 |
Citation counts are drawn from a searched corpus and skew toward older filings that have had more time to accumulate citations — treat this as a measure of influence on the field to date, not of current relevance.
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.
Put your own technology through the same analysis
Eureka on the web
When you want the answer in the next five minutes.
The agent works the prompt against patents and technical literature, citing every source.
Run your analysis now →MCP server & REST API
When it has to run inside your own pipeline.
Patent search, landscape analysis and assignee resolution as MCP tools. Drop them into any agent framework, or call REST directly.
Browse MCP servers →What the numbers mean for a filing decision
Three patterns stand out once family counts, IPC spread, and jurisdiction data are put side by side.
The field has already had its filing wave
Six families in 2021 against two at the 2022 midpoint suggests this is a technology area that saw a short burst of interest rather than sustained build-out. New entrants filing now are working after the crowded period, not into a rising market.
Nearly all recent claim activity is examined in one office
With only one U.S. record in the set, prior-art searches and freedom-to-operate work for this specific claim combination should weight Chinese patent practice and examiner behaviour heavily, rather than assuming U.S. or EPO precedent controls.
Sensor-specific claims are thin outside the core class
G01N holds only 7 records and every other IPC subclass touched — marine, filtration, hydraulic engineering, data processing, fertiliser, batteries — has one or two records each. That is a signal of unclaimed adjacent ground more than of a mature, fully mapped field.
No repeat filer is currently active
Every one of the most-active named assignees shows zero filings in the latest tracked year. Combined with only 10 co-assignee pairs across 32 families, this looks like a field of one-off filers rather than an entrenched set of competitors defending territory.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to constructed wetland sensor monitoring, with the prior art for and against each one.
Who is filing, and how concentrated is the field
With 32 families spread across many single-filing entities and only 10 co-assignee pairs, this is not a field with an entrenched leader — it is closer to a long tail of institutes, engineering firms, and individual inventors.
Collaboration is limited and localised
The strongest co-filing relationship in the dataset appears twice; most pairs appear once. This points to project-specific partnerships — an institute working with a data-technology firm, or an individual inventor filing alongside a named collaborator — rather than standing joint-development programmes.
Academic and research-institute filers are visible
Names in the dataset include a university, a provincial hydraulic research academy, and river-basin research institutes alongside engineering and environmental-technology firms, suggesting the claim activity is as much research output as product development.
No current leader to watch
Because every tracked assignee's most recent-year count is zero, there is no single organisation currently pressing forward in this space. A new filer entering now would be doing so into open ground rather than against an active competitor.
| Assignee | Recent year | YoY |
|---|---|---|
| West Anhui University | 0 | — |
| Wuhan Changbao Environmental Protection Engineering Co., Ltd. | 0 | — |
| Anhui Guonong Data Technology Co., Ltd. | 0 | — |
| MCC Northwest Engineering Technology Co., Ltd. | 0 | — |
| Huang Wenhong | 0 | — |
| Changjiang River Scientific Research Institute, Changjiang Water Resources Commission | 0 | — |
| Zhengzhou University | 0 | -100% |
| Shao Shegang | 0 | — |
Where to take this analysis
This landscape identifies the shape of the field; the next steps depend on whether the goal is freedom-to-operate, whitespace filing, or competitive tracking.
Run a full-text claim comparison
The IPC-level view here groups records by classification, not by claim language. A full-text comparison against US9011689B1 and the other highly-cited records would confirm whether a specific sensor-integration approach is actually blocked.
Explore claim charting in EurekaTrack the thin IPC branches over time
Marine, hydraulic-engineering, and data-processing crossovers each hold only one or two records today. Monitoring these branches for new filings would give early warning if a competitor starts consolidating claims there.
Set up monitoring in EurekaCommon questions about this patent landscape
This dataset identifies 32 patent families published between 2015 and mid-2026 that combine constructed, treatment, or engineered wetland terminology with water quality, dissolved oxygen, hydraulic performance, or sensor-network monitoring language, filtered to the core water-treatment and material-analysis IPC classes. That is a small, specific slice of the broader wetland treatment literature, not a count of every wetland-related patent. Because publication lags filing by around 18 months, the true 2025-2026 count will be somewhat higher once later applications publish.
No single organisation dominates this field. The dataset shows a long tail of universities, provincial research institutes, engineering firms, and individual inventors, with only 10 co-assignee pairs across all 32 families and the strongest collaboration appearing just twice. Every one of the most-active named assignees shows zero filings in the latest tracked year, so there is no currently active leader to benchmark against — a competitive-intelligence effort here should track new entrants rather than watch an incumbent.
The data shows filing peaking at six families in 2021 and falling to two by the 2022 midpoint, with no sustained recovery visible since. This pattern is consistent with a short burst of research or grant-driven filing rather than a commercially self-sustaining technology push; high filing density in a narrow window signals that claim space got occupied quickly, not that the underlying technology matured or proved out. The decline should be weighed against publication lag, which understates the most recent one to two years in any filing trend.
US9011689B1, assigned to the U.S. Department of the Interior, claims an artificial recharge system combining a constructed wetland, a settling pond, and a porous recharge reservoir connected to an aquifer, with a backflush tube in a sand layer. It is the most-cited record in this dataset at 13 citations, which reflects its influence on later filings rather than unusually broad current-day scope. Its claims centre on the physical recharge architecture rather than sensor instrumentation, so monitoring technology built around dissolved oxygen or water-quality sensing in a different wetland architecture would need a separate claim-by-claim check rather than an assumption of automatic overlap.
The clearest gaps sit in IPC branches adjacent to the dominant C02F water-treatment classification: marine-vessel applications, hydraulic-engineering flow control, fertiliser byproduct monitoring, business-data-layer monitoring platforms, and battery or fuel-cell power for sensor nodes each hold only one or two records in this dataset. These thin branches suggest under-claimed combinations — for example, wetland hydraulic performance sensing tied to flow-control engineering claims, or self-powered sensor nodes integrated into wetland fertiliser recovery systems — worth a dedicated prior-art search before filing.
Research Constructed Wetland Sensor Monitoring in depth with Eureka
Go past this page: query the whole constructed wetland sensor monitoring corpus yourself, in your own scope.
Every answer comes back with patent numbers you can open.
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.