Microreactor Process Control Patents: Leaders & White Space 2026
- Filing activity peaked in 2021 at 27 families and has since flattened rather than continued climbing, suggesting the core claim space is settling rather than still expanding.
- One filing cluster dominates the citation record with three of the five most-cited documents tied to modular microreactor and separation-membrane work filed well before 2015.
- Co-filing is concentrated in a single inventor group the strongest co-assignee pairs all link back to the same handful of named inventors, with zero recent-year output from any of them.
Filing growth compares 2021 (27 records) with 2024 (24) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 525 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
Microreactor process control sits at the intersection of chemical reaction engineering and closed-loop instrumentation: flow control, temperature control, residence-time control and feedback control applied inside microchannel or micro reactor hardware. The dataset behind this page pulls 525 patent families published between 2015 and mid-2026 under IPC classes covering chemical/physical processes (B01J), control systems (G05B13) and related apparatus categories, filtered to documents whose title or claims explicitly reference flow, temperature, residence-time or feedback control in a microreactor context.
Because publication typically lags filing by around 18 months, the 2025-2026 filing counts in this dataset are still incomplete and will revise upward as later-filed applications publish. The trend read below should be taken as directional through roughly 2023-2024 rather than as a final count for the most recent years.
Filing trends and technology composition
Two views of the same 525-family dataset: how filing volume has moved year over year, and which IPC subclasses the claims actually sit in.
A flat-to-declining trend after a 2021 peak
Filings rose from 4 in 2017 to a peak of 27 in 2021, then held near 21 at the 2022 midpoint — a plateau rather than sustained growth. That pattern is more consistent with a maturing claim space than with a technology still in its land-grab phase, though the last two data-cut years are understated by publication lag.
Claims concentrate in chemistry, not just controls
Almost every record touches B01J (524 of 525), confirming the search anchor, but the secondary weight sits in B01F mixing/stirring (99), C07C organic compounds (89) and C01B inorganic compounds (72) — process chemistry applied through the reactor, not standalone control theory. Lab apparatus (B01L, 53), MEMS-scale devices (B81B, 48) and heat exchange (F28D, 40) trail behind, marking the smaller but more hardware-specific branches of the field.
Shares are the percentage of the 525 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Microreactor Process Control with Eureka
This page is one run against one query. Ask Eureka your own question about microreactor process control and every answer comes back with the patent numbers behind it.
Try EurekaThe documents shaping this space
Flow Control Device, Microreactor and Use Thereof (US20080274038A1)
A microreactor with multiple introduction channels merging into a single flow, where a flow control section sits between the merge point and the reaction channel and contains a movable particle inside a channel. The particle position governs the flow state entering the reaction zone, giving the device a passive, in-line way to regulate flow without external actuation.Filed by National University Corporation Okayama University; published 2008-11-06.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | WO2001068257A1 | microreactor | 187 |
| 2 | WO2001089681A2 | Modular chemical production system incorporating a microreactor | 180 |
| 3 | US6136274A | Matrices with memories in automated drug discovery and units therefor | 180 |
| 4 | US6541676B1 | Integrated palladium-based micromembranes for hydrogen separation and hydrogenation/dehydrogenation reactions | 149 |
| 5 | US20040220434A1 | Process for converting a hydrocarbon to an oxygenate or a nitrile | 144 |
| 6 | US20040076562A1 | Catalysts, in microchannel apparatus, and reactions using same | 139 |
| 7 | US20020182735A1 | Use of microchannel reactors in combinatorial chemistry | 138 |
| 8 | US20060057039A1 | Chemical microreactor and method thereof | 128 |
| 9 | US20020106311A1 | Enhancing fluid flow in a stacked plate microreactor | 113 |
| 10 | US20100160463A1 | Fischer-tropsch synthesis using microchannel technology and novel catalyst and microchannel reacotr | 99 |
Citation counts are drawn from within this searched corpus and favour older, foundational filings; they signal influence on later drafting, not current commercial relevance.
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 say
Three read-outs from the trend, technology and citation data that matter for anyone deciding where to file next.
Growth has plateaued since the 2021 peak
Filings climbed from 4 in 2017 to 27 in 2021, then eased to 21 by the 2022 midpoint. That is a plateau, not a continued climb — new entrants are filing into a space where the dominant claim positions were largely staked out between 2018 and 2021.
Chemistry classes outweigh pure control-systems filings
Nearly the entire corpus sits in B01J (chemical/physical processes), with mixing (B01F), organic synthesis (C07C) and inorganic chemistry (C01B) as the largest secondary classes. Control engineering is expressed through reactor and process chemistry claims rather than as standalone G05B control-theory filings.
Influence traces back to a small set of foundational filings
The five most-cited records include modular microreactor system patents and a palladium-membrane hydrogen-separation patent, all predating most of the 2015-2026 window. New filings are drafting around a citation base that was set well before the recent filing plateau.
Co-assignment is tight and inventor-driven, not corporate-broad
Of 10 identified co-assignee pairs, the strongest three all score 12 and all trace to the same core inventor group, filed alongside a single named corporate assignee. That is a narrow collaboration network rather than a broad cross-industry one.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to microreactor process control, with the prior art for and against each one.
Who holds the ground, and where it opens up
Filing concentration and recent-year momentum point to a field where the leading positions were built years ago and have gone quiet, leaving room to assess for both freedom-to-operate and genuinely open sub-areas.
A single inventor-led group anchors the densest cluster
The strongest co-assignee pairings in the dataset all link back to the same named inventors filing together, tied to one corporate assignee. This cluster's citation and co-filing density suggests its claims are the ones any new filer in modular microreactor systems needs to check first.
The named leaders have gone quiet in the most recent year
Every one of the top assignees and inventors identified by co-filing strength shows zero filings in the latest year of the dataset. That does not mean the space is abandoned — publication lag alone could explain part of it — but it does mean current filing activity is not coming from the historically dominant names.
Filing is US- and Europe-weighted, with China close behind
The United States receives the largest share of filings (154), followed by the EPO (94) and China (87), with WIPO/PCT (50), Canada (41) and India (25) trailing. That distribution points to the US and Europe as the primary examination venues to watch for freedom-to-operate risk.
| Assignee | Recent year | YoY |
|---|---|---|
| Velocys, Inc. | 0 | — |
| TONKOVICH ANNA LEE | 0 | — |
| Hitachi Plant Services Co., Ltd. | 0 | — |
| MAZANEC TERRY | 0 | — |
| DALY FRANCIS P | 0 | — |
| Hitachi, Ltd. | 0 | — |
| Corning Incorporated | 0 | — |
| Shell International Research Maatschappij B.V. | 0 | — |
Where to take this next
The dataset points to a plateaued core and a handful of thinner branches. The next steps depend on whether the goal is clearance, drafting, or monitoring.
Run a freedom-to-operate check against the top co-assignee cluster
Before drafting claims in modular microreactor systems, check the specific claim scope held by the inventor group behind the strongest co-assignee pairings — their filings are the densest single block in this dataset.
Explore assignee claim scope in EurekaDraft into the thinner IPC branches
B81B (MEMS-scale devices) and F28D (heat exchange) carry a fraction of the filing volume of B01J or B01F, which may reflect genuine white space rather than lack of interest.
Compare IPC branch density in EurekaTrack whether the 2021 peak was a real ceiling
The 2022 midpoint already shows softening from the 2021 peak; watch the next two publication cycles to see whether filing recovers or the plateau holds.
Set up filing trend alerts in EurekaCommon questions on microreactor process control patents
In this dataset, process control covers flow control, temperature control, residence-time control and feedback control mechanisms built into or around a microreactor or microchannel reactor. That includes both hardware solutions, like a movable particle regulating flow inside a channel, and instrumentation loops that adjust reactor conditions based on sensor feedback. It does not require a standalone control-theory claim; most records express control through the reactor and process chemistry itself rather than through separate G05B-style control-systems claims.
Filing activity rose from 4 families in 2017 to a peak of 27 in 2021, then eased to 21 by the 2022 midpoint, which reads as a plateau rather than continued growth. The most recent one to two years in any patent dataset are understated because publication typically lags filing by about 18 months, so the true 2024-2026 picture will only be clear once those applications publish. Based on the data available now, the space looks more settled than expanding.
The strongest signal in this dataset is co-assignee density rather than a single dominant corporate name: the tightest filing pairs trace back to one core group of named inventors filing alongside a single corporate assignee, with pairing strength of 12 shared filings. Notably, every one of the leading assignees identified this way shows zero filings in the most recent year, meaning current activity is not concentrated among the historically dominant filers. Anyone assessing competitive position should treat this as a legacy-strength ranking, not a live-momentum one.
The United States receives the largest share of filings in this dataset at 154, followed by the European Patent Office at 94 and China at 87. WIPO/PCT filings (50), Canada (41) and India (25) make up the remainder. This distribution suggests the US and Europe are the primary jurisdictions for both examination risk and competitive filing activity, with China a close third.
The technology composition data shows B01J (chemical/physical processes) covering almost the entire corpus, but secondary IPC classes like B81B (MEMS-scale devices, 48 records), F28D (heat exchange, 40 records) and G01N (analytical feedback, 44 records) carry noticeably less filing density. That gap does not guarantee an easy claim, but it does mark where fewer prior filings exist relative to the dense B01J and B01F clusters, making those branches worth a closer freedom-to-operate and drafting review.
Research Microreactor Process Control in depth with Eureka
Go past this page: query the whole microreactor process control 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.