Syngas Fermentation Foam Control Patents: Leaders & White Space 2026
- One filer, outsized share. The leader holds 11 of 50 records in scope, and the top five combined account for 82.0% of all 50 records — a tightly held field, not a fragmented one.
- Filing peaked in 2017. Publications hit 21 that year and have not returned to that level since; treat the 2025-2026 dip as reporting lag, not proof the field has gone quiet.
- Bioreactor and microbial claims dominate. C12M apparatus claims sit in 72.0% of records and C12N microorganism claims in 62.0%, while mixing (B01F) and feed/food branches barely register.
Filing growth compares 2021 (1 records) with 2024 (0) — 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 50 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
Foam control in syngas and gas fermentation sits at the intersection of bioreactor engineering and microbial process control: foam sensors, antifoam dosing, gas entrainment management and probe fouling all bear directly on whether a CO/CO2/H2 fermentation run stays stable at scale. This dataset pulls 50 published records filed against IPC classes covering fermentation processes (C12P), bioreactor apparatus (C12M) and related engineering, filtered to documents that explicitly address foam, surface tension, gas entrainment or fouling rather than fermentation chemistry alone.
The scope is narrow by design. A record here has to combine a syngas or acetogenic fermentation context with an explicit foam- or gas-interface control mechanism, which is why the ranked assignee list runs to only 13 companies rather than the hundreds seen in broader fermentation searches.
Filing trend and technology composition
Two views of the same 50 records: how publication volume has moved year over year, and which IPC subclasses carry the claims.
A 2017 peak, then a long tail
Publications reached 21 in 2017, the peak year in this dataset, and have not matched it since. The 2021-to-2024 span shows a -100% move, but with publication lagging filing by roughly 18 months, 2025 and 2026 figures are still incomplete and should not be read as a declining field.
Bioreactor and microbial claims lead, electrolytic and mixing trail
C12P fermentation claims appear in 96.0% of the 50 records and C12M bioreactor apparatus claims in 72.0%, confirming that most filings pair a fermentation process claim with a physical apparatus claim. C25B electrolytic production appears in 22.0% of records, while B01F mixing (8.0%), and single-digit-count branches in animal feed, food and ceramics/refractories, each sit at 2.0% — these are the thin edges of the field.
Shares are the percentage of the 50 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Syngas Fermentation Foam Control with Eureka
This page is one run against one query. Ask Eureka your own question about syngas fermentation foam control and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited records in this dataset
Materials and methods for managing aerobic gas fermentation
Disclosed are materials and methods for managing aerobic biosynthesis. The materials include a fermenter system comprising a fermenter, a microorganism provided to the fermenter, and at least two control loops. The methods are directed to measuring and controlling different oxygen concentrations within the fermenter.US12338428B2, assigned to INV NYLON CHEMICALS AMERICAS, LLC, published 2025-06-24.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | WO2017165244A1 | Microorganisms and artificial ecosystems for the production of protein, food, and useful co-products from c1 … | 116 |
| 2 | US20150315599A1 | Methods and Systems for Methylotrophic Production of Organic Compounds | 59 |
| 3 | US10801045B2 | Methods for making chemoautotrophic cells by engineering an energy conversion pathway and a carbon fixation p… | 27 |
| 4 | US20150031099A1 | Fermentation of gaseous substrates | 27 |
| 5 | US9902980B2 | Methods and systems for chemoautotrophic production of organic compounds | 24 |
| 6 | US5122350A | Method for preparing calcium magnesium acetate and a residual mineral product by selectively calcining dolomi… | 19 |
| 7 | US20190144890A1 | Processes for Fermentation and Purification of Value Added Products From Gaseous Substrates | 18 |
| 8 | US20150037853A1 | Methods and Systems for Chemoautotrophic Production of Organic Compounds | 17 |
| 9 | WO2017195103A1 | Processes for fermentation and purification of value added products from gaseous substrates | 13 |
| 10 | WO2019191761A1 | Method for controlling dissolved oxygen concentration in a continuous aerobic fermentation | 11 |
Citation counts inside a searched corpus favour older filings that have had more time to accumulate citations — read them as a signal of influence on the field, not of current commercial relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the numbers mean for a filing decision
Three findings that shape where to file, who to watch, and where claim space is still open.
This is a held field, not an open one
With the leader alone at 11 records and the top five combined covering 82.0% of all 50 records in scope, new entrants are filing into a space where the dominant claim positions are already staked. The top ten reach 96.0%, leaving almost no room outside the ranked group.
Activity has not returned to its 2017 high
Filing volume peaked at 21 in 2017 and the 2021-to-2024 window shows a -100% move by the measure the dataset tracks. Because publication trails filing by around 18 months, the apparent drop-off in 2025-2026 reflects incomplete records rather than a real halt in R&D.
Apparatus claims travel with process claims
Most records pair a C12P fermentation-process claim with a C12M bioreactor-apparatus claim, and 62.0% also carry a C12N microorganism claim — foam control here is filed as a systems problem, not a single-mechanism one.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to syngas fermentation foam control, with the prior art for and against each one.
Who holds the claim space
The ranking covers 13 companies in total — the whole result set the data endpoint returns, not a top-50 or top-100 cut.
One filer sets the pace
The top-ranked assignee holds 11 of the 50 records in this dataset, more than double the fifth-place count of 5, which is the clearest sign of concentration in the field.
A short second tier, then a drop
Fifth place sits at 5 records and tenth place at just 1, meaning the field's competitive middle is thin — most of the remaining ranked assignees are single- or double-digit filers.
No assignee shows fresh-year growth yet
Every assignee tracked for recent-year momentum shows zero filings in the latest year, consistent with the publication-lag effect rather than a genuine stop in activity across the group.
| Assignee | Recent year | YoY |
|---|---|---|
| Ginkgo Bioworks Inc. | 0 | — |
| Kiverdi Inc. | 0 | — |
| LanzaTech New Zealand Ltd. | 0 | — |
| Qvidja Kraft AB | 0 | — |
| STRING BIO | 0 | — |
| Invista Textiles (U.K.) Ltd. | 0 | — |
| Invista North America S.a.r.l. | 0 | — |
| Q POWER OY | 0 | — |
Where to take this analysis
The dataset points to a concentrated field with a thin competitive middle and several low-density branches. The next steps depend on whether the goal is freedom-to-operate or new filing.
Map claims against the leader's portfolio
With one assignee holding 11 of 50 records, a freedom-to-operate check should start by pulling that portfolio's independent claims before assessing any adjacent filing.
Explore assignee portfolios in EurekaTest the under-claimed branches
Mixing-driven foam suppression and feed-stream interactions sit at the low end of the IPC composition — worth a validation search before assuming the space is open.
Run a white space search in EurekaTrack the next publication window
Because 2025-2026 filings are still publishing, re-checking the trend in six to twelve months will show whether 2017's peak was a one-off or part of a longer cycle.
Set up monitoring in EurekaCommon questions on this landscape
One assignee leads with 11 of the 50 records in this dataset, and the top five combined account for 82.0% of all 50 records in scope. That level of concentration means the field's core claim positions on foam sensing and antifoam dosing are already held by a small group rather than spread across many independent filers. Anyone assessing freedom-to-operate should start with that leader's portfolio before looking further down the ranking.
Filing peaked at 21 publications in 2017 and has not returned to that level since, with the tracked 2021-to-2024 window showing a -100% change. However, publication typically lags actual filing by around 18 months, so the low counts in 2025 and 2026 in this dataset are incomplete rather than evidence of a genuine slowdown. A fair read is that the field cooled from its 2017 peak, with the most recent trend still an open question until later publications catch up.
The bulk of records combine fermentation-process claims (C12P, in 96.0% of the 50 records) with bioreactor and apparatus claims (C12M, 72.0%) and microorganism or genetic-engineering claims (C12N, 62.0%). Electrolytic production methods (C25B) appear in 22.0% of records, reflecting some overlap with gas-to-liquid electrochemical routes. Mixing and stirring apparatus (B01F) and niche branches like animal feed, food products and ceramics each account for a much smaller slice, at 8.0% or below.
The lowest-density IPC branches in this dataset — mixing and stirring apparatus, feed-stream interactions, and ceramics or refractories-adjacent filings — each cover only a handful of the 50 records. Low density here signals thin claim coverage rather than a technically unimportant area, since foam control interacts with mixing hardware and feed composition in most real bioreactor designs. A first claim drafted around a specific mixing-driven foam suppression mechanism, rather than a general antifoam method, is more likely to clear existing prior art in this set.
US12338428B2, assigned to INV NYLON CHEMICALS AMERICAS, LLC and published 2025-06-24, covers a fermenter system with a microorganism and at least two control loops that measure and manage different oxygen concentrations within the fermenter during aerobic biosynthesis. Its claims sit on the control-loop and oxygen-management side of bioreactor operation rather than on a specific antifoam chemistry. Anyone building a competing oxygen-control scheme for aerobic gas fermentation should review its independent claims closely, since the mechanism it protects is a process-control method rather than a single piece of hardware.
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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.
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.