Syngas Fermentation Contamination Control Patents: Who Leads 2026
- Two assignees hold the entire ranking. The top 2 combined account for 11 of 11 records in scope, 100.0% — this is a field with no long tail yet.
- Filing peaked in 2017 and has not returned. Seven of the eleven records in scope were filed in the peak year alone, with the growth figure from 2021 to 2024 sitting at -100%.
- One family carries almost all the citation weight. WO2017165244A1 is cited 116 times against a single-digit count for the next most-cited record, marking it as the reference point competitors design around.
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.
A narrow, concentrated filing pattern
Syngas fermentation contamination control sits at the intersection of gas fermentation biology and sterile bioprocess engineering: keeping C1-substrate fermentations free of competing organisms while running continuous gas-to-liquid conversion. The scope here is narrow by design — it combines syngas or gas fermentation terminology with contamination-specific concepts like bioburden detection, sterile boundary, aseptic sampling and batch isolation, filtered to the core apparatus and fermentation IPC classes. That combination returns just 11 published records, which is small enough that every filing carries visible weight in the ranking.
The record set spans 2015 through the current data cut-off, with filing activity concentrated early and receiving offices spread thinly across Australia, Chile, Europe, Brazil, Canada and the Eurasian Patent Office. Because publication typically lags filing by around 18 months, the flat recent years understate whatever filing activity is already underway but not yet public.
Filing trend and technology composition
Two views of the same 11 records: how filing activity has moved over time, and which IPC subclasses the claims sit in.
Filing peaked early and has not recovered
Filings peaked at 7 in 2017, the high point for the whole window. The tracked growth figure from 2021 to 2024 is -100%, and 2026 stands at 0 — though as a partial year, that figure will fill in as later-filed applications publish.
Claims cluster in bioreactor, microorganism and fermentation classes
All 11 records in scope carry C12M (bioreactors and enzyme apparatus), C12N (microorganisms and genetic engineering), C12P (fermentation and enzymatic synthesis) and C25B (electrolytic production of compounds) classifications — a record can carry several classes at once, so these shares sum past 100%. Only a single record each touches A23K animal feed and A23L food applications, at 9.1% of records apiece, marking those as adjacent rather than core filing targets.
Shares are the percentage of the 11 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Syngas Fermentation Contamination Control with Eureka
This page is one run against one query. Ask Eureka your own question about syngas fermentation contamination control and every answer comes back with the patent numbers behind it.
Try EurekaThe record every subsequent filer has had to read
Microorganisms and artificial ecosystems for the production of protein, food, and useful co-products from C1 substrates
Microorganisms and bioprocesses are provided that convert gaseous C1 containing substrates, such as syngas, producer gas, and renewable H2 combined with CO2, into nutritional and other useful bioproducts.Filed by Kiverdi, published 2017-09-28, cited 116 times within this corpus — by far the heaviest citation weight of the 11 records in scope.
| # | 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 | CA3017799A1 | Microorganisms and artificial ecosystems for the production of protein, food, and useful co-products from c1 … | 1 |
Citation counts inside this corpus favour older filings; treat them as a signal of influence rather than of current commercial relevance.
Publication numbers are shown where the record carries one (2 of 2 rows); 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 a new filing would land in this space.
No long tail to compete against
The top 2 combined account for all 11 records in scope. There is no third assignee visible in this dataset, so a new entrant is not competing against a crowded field of small filers — it is competing against two established positions with no dilution between them.
Filing has gone quiet, not necessarily cold
The tracked growth figure from 2021 to 2024 is -100%, and recent-year momentum by assignee shows 0 filings in the latest year for both parties. Given the roughly 18-month publication lag, this reads as a pause in visible activity rather than confirmed abandonment of the space.
One family anchors the prior art
WO2017165244A1 carries 116 citations against 1 for the next most-cited record in scope. Anyone filing in this area needs to have read this family closely, since it is the de facto reference point the rest of the field is measured against.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to syngas fermentation contamination control, with the prior art for and against each one.
A two-party field
The assignee ranking for this search returns exactly two companies, together covering the entire record set — there is no ranked long tail beneath them.
The dominant filer by volume
One assignee holds 10 of the 11 records in scope, making it the clear reference point for anyone assessing freedom to operate in syngas fermentation contamination control.
A single-filing counterpart
The second ranked assignee holds the remaining record, rounding the top 2 combined out to 100.0% of the 11 records in scope. Recent-year momentum for both parties sits at 0 in the latest tracked year.
No visible third entrant
The data endpoint returns only two ranked assignees for this search — not a top-50 or top-100 cut, but the whole ranking. A new filer entering this space is not displacing a queue of small competitors, only these two positions.
| Assignee | Recent year | YoY |
|---|---|---|
| Kiverdi, Inc. | 0 | — |
| Kiverdi, Inc. | 0 | — |
Where to take this analysis
This landscape narrows to a specific contamination-control slice of syngas fermentation. A few directions extend the picture.
Track the broader syngas fermentation field
Contamination control is one slice of a wider syngas and gas fermentation patent base. Widening the IPC and keyword scope shows how this niche compares to core conversion-process filing volume.
Explore the wider field in Eureka →Watch for the 2025–2026 publication catch-up
With a roughly 18-month publication lag, filings made in the last two years are still arriving. Re-running this search in a future cycle will show whether the 2021–2024 decline holds or reverses.
Set up monitoring in Eureka →Check freedom to operate against the leading family
WO2017165244A1's claim scope is the single heaviest-cited reference in this set. A claim chart against it is the logical next step before filing adjacent work.
Run a claim comparison in Eureka →Common questions on this landscape
This dataset returns 11 published records within the defined search scope, covering the period from 2015 through the 2026 data cut-off. That is a narrow field compared to broader gas fermentation or syngas conversion searches, because the scope here specifically combines gas fermentation terms with contamination-control concepts like bioburden detection, sterile boundary and aseptic sampling. Because the search is narrowly drawn, a wider keyword or IPC set would return a larger, less specific set of records.
The assignee ranking for this search returns exactly two companies, together covering all 11 records in scope — the leader holds 10 of the 11, with the remaining record held by the second-ranked assignee. This is the complete ranking the data endpoint returns for this search, not a top-50 or top-100 cut. Recent-year momentum for both assignees sits at 0 filings in the latest tracked year, which given typical publication lag may understate work already underway.
Filing peaked in 2017 at 7 records, the highest single year in the window. The tracked growth figure from 2021 to 2024 — the last year that can be treated as complete given publication lag — is -100%, and 2026 shows 0 filings so far as a partial year. That decline should be read cautiously: publication lags filing by roughly 18 months, so recent quiet years do not necessarily mean underlying research activity has stopped.
WO2017165244A1, filed by Kiverdi and published in 2017, covers microorganisms and bioprocesses that convert gaseous C1-containing substrates such as syngas, producer gas, and renewable hydrogen combined with CO2 into nutritional and other useful bioproducts. It is cited 116 times within this corpus, far ahead of any other record in scope, making it the dominant prior-art reference for anyone working on C1-substrate fermentation and its contamination-control aspects. Any freedom-to-operate review in this space should start with a claim-by-claim comparison against this family.
The technology composition shows dense coverage across bioreactor apparatus, microorganism engineering, fermentation process and electrolytic production classes — all four core classes appear in every one of the 11 records in scope. Coverage thins sharply in adjacent application areas: animal feed and food-product applications each appear in only 1 of the 11 records, at 9.1% each. That gap, combined with a two-party assignee field and no long tail of smaller filers, suggests real-time bioburden sensing and food- or feed-grade contamination protocols remain comparatively open.
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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.