MBR Aeration/Cleaning Control Patent Landscape 2026
The MBR aeration and cleaning control patent space is moderately concentrated, with Alfa Laval Corp AB holding the largest single position among a small but active global filer base. The field is still expanding on a multi-year basis, though annual volume has eased from its 2018 peak and the most recent filing years remain understated by publication lag.
Alfa Laval leads a moderately concentrated field with a clear tier gap below the top two
Alfa Laval Corp AB ranks first among the top-100 filers, followed by BL Technology Inc in second place and Velocys Tech Ltd in third. The top five filers account for 40% of the combined output of the hundred largest filers, signalling meaningful but not extreme concentration at the apex.
A visible tier gap separates the top three players from the remainder of the ranked list, where most applicants hold only two patent records apiece. This bi-modal structure — a small leading cluster and a long, flat tail — is characteristic of a technically specialised, niche domain.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Alfa Laval Corp AB | 12 | |
| 2 | BL Technology Inc | 9 | |
| 3 | Velocys Technologies Ltd | 7 | |
| 4 | Tianjin Water Engineering Group Co Ltd | 2 | |
| 5 | Urano Acque SRL | 2 | |
| 6 | General Electric Company | 2 | |
| 7 | Industrial Technology Research Institute | 2 | |
| 8 | Keith A Lampi | 2 | |
| 9 | Tzahi Y Cath | 2 | |
| 10 | Kanazawa University | 2 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | University of Regina | 2 | |
| 12 | John R Herron | 2 | |
| 13 | CHONGQING INST OF GEOLOGY & MINERAL RESOURCES | 2 | |
| 14 | Regents of the University of California | 2 | |
| 15 | Chongqing University | 2 | |
| 16 | Yang Demin | 2 | |
| 17 | Ryan W Holloway | 2 | |
| 18 | Zhejiang University of Technology | 1 | |
| 19 | Swami Rama Himalayan University | 1 | |
| 20 | Beijing Drainage Group Co Ltd | 1 |
Alfa Laval’s lead position, anchored in water and wastewater treatment (C02F), gives it a durable prior-art anchor that challengers must design around. BL Technology’s close proximity in the ranking suggests it is a credible second-tier competitive reference point rather than a distant follower.
Filing counts for the most recent 18–24 months are understated due to standard patent-publication lag; the apparent plateau in 2024–2025 data should not be read as a real deceleration. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Multi-year growth continues despite easing from the 2018 peak; C02F dominates the technology mix
The annual filing trend and technology composition charts together reveal a field that has grown over the recent three-year window relative to the prior period, while remaining heavily anchored in water and wastewater treatment chemistry.
Annual filing trend
Annual filings peaked around 2018, eased through 2020–2021, then recovered in 2023–2025. The recent three-year window sits 36% above the prior three-year window, confirming multi-year expansion. The 2025–2026 bars are understated by publication lag and should not be read as a real decline.
↗ Hover for values · click a bar to ask EurekaTechnology composition
C02F (water and wastewater treatment) is the dominant IPC class by a wide margin, reflecting the core application of MBR control technology. B01D (separation processes including filtration) is the second-largest branch, while all remaining classes — including C01B, C10G, C12M, and control/measurement classes — each represent only a small share, highlighting how tightly the portfolio clusters around the primary application.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Membrane bioreactor with reduced air scour require…
In a sewage treatment plant with a membrane bioreactor (MBR), raw untreated or partially treated wastewater (influent) and/or mixed liquor in the intensified process is superoxygenated. In a preferred form of the process the influent is superoxygenated such that membrane air scouring requirements are reduced. Influent may be fed to a swing zone where… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Moving bed membrane bioreactor | 45 |
| 2 | Water reuse system and method | 34 |
| 3 | Membrane bioreactor using non-woven fabric filtrat… | 29 |
| 4 | Water reuse system and method | 26 |
| 5 | Wastewater treatment with primary treatment and MB… | 24 |
| 6 | Methods of Making Purified Water from the Fischer-… | 22 |
| 7 | Zero excess sludge membrane bioreactor | 22 |
| 8 | Membrane bioreactor using non-woven fabric filtrat… | 19 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the competitive structure means for R&D investment decisions
Four structural observations — maturity, concentration, collaboration patterns, and geography — shape where incremental R&D investment is likely to be most productive or most contested.
Growth stage with easing annual pace
The field is classified as Growth: recent three-year filings are 36% above the prior three-year window, confirming sustained expansion on a multi-year basis. Annual volume has nonetheless eased from its 2018 peak. New entrants appearing in the momentum data suggest the competitive set is still being refreshed rather than closed.
Growth stageModerate top-end concentration with a long flat tail
The top five filers hold 40% of the hundred largest filers’ combined output, while the majority of ranked applicants sit at just two patent records each. This structure means the leading positions are defensible but the field is not yet locked — a focused filing campaign in an adjacent sub-domain could establish a credible position without directly colliding with Alfa Laval or BL Technology.
Moderate HHIA tight three-way academic cluster in Chongqing
The most active co-filing relationships link Chongqing University, the Chongqing Institute of Geology and Mineral Resources, and individual inventor Yang Demin, each pair co-filing two patent records. This cluster is geographically concentrated and academically oriented, suggesting that Chinese university IP in this space is currently produced through small, tightly coupled teams rather than broad industry-academic consortia.
Local clusterUS-first filing strategy dominates; China and PCT are secondary routes
The United States leads all jurisdictions with 26 patent records, followed by China with 16 and WIPO PCT with 8. Canada and Europe (EPO) are present but smaller. The US-first pattern reflects where the primary commercialisation and litigation risk is perceived to lie, while PCT filings indicate applicants seeking optionality in multiple markets without committing to full national-phase prosecution.
US-firstGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| Chongqing University | Chongqing Institute of Geology and Mineral Resources | 2 |
| Chongqing University | Yang Demin | 2 |
| Chongqing Institute of Geology and Mineral Resources | Yang Demin | 2 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Alfa Laval and BL Technology set the pace, with Velocys as a specialised third
Three organisations hold materially larger positions than the rest of the ranked field. Their technology emphases differ enough that they are not perfect substitutes as competitive references.
Alfa Laval Corp AB
Alfa Laval holds 12 patent records — the largest single position in the corpus — concentrated in C02F water and wastewater treatment sub-classes, including both biological treatment (C02F 3) and application-context tagging (C02F 101). The applicant momentum data classifies Alfa Laval as a new entrant to the recent filing window, suggesting its current position reflects a deliberate push into MBR control rather than legacy accumulation.
12 patent recordsBL Technology Inc
BL Technology Inc holds 9 patent records and shows a technically broader profile than Alfa Laval, with coverage spanning B01D 61 (membrane separation processes) as well as C02F water treatment sub-classes — indicating engagement with both the membrane hardware layer and the biological process layer of MBR systems. Momentum data also classifies BL Technology as a new entrant in the recent window, making it an active rather than dormant challenger.
9 patent records| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Alfa Laval Corp AB | 2 | ▲ new entrant |
| Velocys Technologies Ltd | 1 | ▲ new entrant |
| BL Technology Inc | 1 | ▲ new entrant |
Under-served IPC branches adjacent to the core MBR control domain
Several IPC classes sit at the periphery of the current filing corpus with very low patent-record counts. These are observations of relative sparsity; they represent plausible adjacent technical areas rather than validated market opportunities.
C12M · Bioreactors & enzyme apparatus
C12M covers the biological reactor hardware layer most directly underlying MBR operation, yet it accounts for only 1 patent record in this corpus. Given that aeration and cleaning control is inherently tied to bioreactor performance, the sparse coverage here may indicate that bioreactor-level control innovations are being claimed under C02F rather than C12M — or that the sub-domain of enzyme-stabilised or enhanced biological MBR control is genuinely underdeveloped. An entrant with biological process expertise could file in this branch with limited prior-art crowding.
Search this in Eureka →G05D · Control of non-electric variables
G05D is the natural IPC home for automated process control of physical variables such as flow, pressure, and concentration — all central to adaptive MBR aeration and cleaning strategies — yet it holds only 1 patent record in this corpus. The near-absence of formal control-systems claims suggests that algorithmic or sensor-driven MBR optimisation (e.g. real-time fouling prediction and aeration adjustment) remains an under-claimed technical area. Organisations with control-engineering or industrial-AI capability face limited incumbent prior art in this branch.
Search this in Eureka →How leading filers differ by technology route
Route coverage across the main technology branches in the current evidence set.
| Player | C02F 3 · Water & wastewater treatment | C02F 1 · Water & wastewater treatment | B01D 61 · Separation processes (filtration etc.) | C02F 101 · Water & wastewater treatment | C02F 11 · Water & wastewater treatment |
|---|---|---|---|---|---|
| BL Technology Inc | Strong · 5 | Strong · 5 | Strong · 5 | Moderate · 2 | Strong · 4 |
| Alfa Laval Corp AB | Strong · 12 | Absent | Absent | Strong · 7 | Absent |
| General Electric Company | Strong · 5 | Absent | Strong · 5 | Emerging · 1 | Strong · 4 |
| Velocys Technologies Ltd | Strong · 7 | Strong · 5 | Absent | Absent | Absent |
| Yang Demin | Absent | Strong · 2 | Absent | Strong · 2 | Moderate · 1 |
| Chongqing Institute of Geology and Mineral Resources | Absent | Strong · 2 | Absent | Strong · 2 | Moderate · 1 |
Frequently asked questions
The corpus covers 44 patent families in scope. This is a focused, specialised domain rather than a broad technology category, so absolute family counts are small relative to adjacent water-treatment fields.
Alfa Laval Corp AB leads with 12 patent records, followed by BL Technology Inc with 9 and Velocys Tech Ltd with 7. These three organisations form the top tier of the ranked filer list.
The United States leads with 26 patent records, followed by China with 16, WIPO PCT with 8, and Canada with 7. Europe (EPO) is present with 4 records.
The lifecycle is classified as Growth: recent three-year filings are 36% above the prior three-year window. Annual volume has eased from a 2018 peak, but the multi-year trend remains positive. The most recent filing years are also understated by publication lag.
The highest-cited work in the corpus is titled ‘Moving bed membrane bioreactor’ (45 citations), followed by two patents titled ‘Water reuse system and method’ (34 and 26 citations respectively), and ‘Membrane bioreactor using non-woven fabric filtration’ (cited in two records at 29 and 19 citations).
C12M (bioreactors and enzyme apparatus) and G05D (control of non-electric variables) each hold only 1 patent record in this corpus despite being technically adjacent to core MBR aeration and cleaning control. G01D (measuring and recording) is similarly sparse at 1 record. These branches show low prior-art crowding for entrants with relevant process-control or biological-engineering capability.
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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.
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