Fischer-Tropsch Interface Patents: Leaders & White Space 2026
- Filing has cooled from its 2017 peak. Ten families published that year against zero recorded in the most recent (partial) year, with 2022's midpoint of seven confirming a flat-to-declining trend rather than a rebound.
- Claims cluster in catalysis and refining, not in interface-specific art. B01J (catalysis) and C10G (hydrocarbon refining) carry the densest filing, while the co-assignee network shows only ten pairs total — collaboration is the exception, not the rule.
- The United States is the dominant filing venue by a wide margin. 73 records route through the USPTO versus 30 at the EPO and 21 via WIPO/PCT, so freedom-to-operate work should start with US prosecution history.
What this landscape covers
This dataset tracks 180 patent families published between 2015 and mid-2026 that combine Fischer-Tropsch synthesis with interface-specific language — catalyst-support interface, gas-liquid interface, or active-site interface. That search construction deliberately excludes generic FT reactor or catalyst-composition filings that do not address the interface itself, so the corpus is narrower and more mechanistically specific than a plain “Fischer-Tropsch” search would return.
Because publication typically lags filing by around 18 months, the most recent year in the trend line is structurally undercounted and should not be read as a real drop-off on its own. The technology composition and assignee spread are more reliable signals of where interface engineering claims currently sit.
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Filing trend and technology composition
Two views of the same 180-family corpus: how filing volume has moved year over year, and which IPC subclasses carry the interface-engineering claims.
A peak in 2017, no sustained recovery since
Filings hit 10 in 2017, the high point of the window tracked here, and the 2022 midpoint of 7 shows the decline has not reversed. Treat the final year's figure of 0 as an artefact of publication lag rather than a genuine stop in filing.
Catalysis and refining subclasses dominate
B01J (chemical/physical processes and catalysis) leads at 66 records, followed by C07C (acyclic and carbocyclic compounds, 49) and C10G (hydrocarbon oil refining, 44). B01D separation processes (43) and C12P fermentation/enzymatic routes (35) round out the mid-tier, with G03G electrography (21), C01B inorganic compounds (20) and C10L fuels (17) forming a smaller but present tail — an indication that interface-engineering claims are being drafted from several adjacent process disciplines rather than one dedicated art unit.
Shares are the percentage of the 180 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Fischer-Tropsch Synthesis Interface Engineering with Eureka
This page is one run against one query. Ask Eureka your own question about fischer-tropsch synthesis interface engineering and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative filing and most-cited prior art
Catalyst for Fischer-Tropsch synthesis reaction and hydrocarbon production device (US20250270149A1)
A hydrocarbon production apparatus supplies a raw material gas into a reaction vessel including a reaction catalyst to produce a hydrocarbon by a Fischer-Tropsch synthesis reaction, in which the raw material gas contains carbon dioxide, and the reaction catalyst contains at least one element selected from the group consisting of yttrium, cerium, lanthanum, praseodymium, neodymium, and holmium.Filed by Sumitomo Heavy Industries, published 2025-08-28 — one of the most recent filings in the dataset and a useful marker of where active claiming continues despite the overall volume decline.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20100216896A1 | Gas-liquid-solid three-phase suspension bed reactor for fischer-tropsch synthesis and its applications | 92 |
| 2 | US20020144600A1 | Conditions for fluid separations in microchannels, capillary-driven fluid separations, and laminated devices … | 91 |
| 3 | US20050070614A1 | Anhydrous processing of methane into methane-sulfonic acid, methanol, and other compounds | 68 |
| 4 | US6875247B2 | Conditions for fluid separations in microchannels, capillary-driven fluid separations, and laminated devices … | 65 |
| 5 | US20080161591A1 | Anhydrous processing of methane into methane-sulfonic acid, methanol, and other compounds | 62 |
| 6 | US7282603B2 | Anhydrous processing of methane into methane-sulfonic acid, methanol, and other compounds | 57 |
| 7 | WO2007008495A2 | Catalytic reaction process using microchannel technology | 56 |
| 8 | US4192854A | Process for removing hydrogen sulfide and ammonia from gaseous streams | 41 |
| 9 | WO2005069751A2 | Anhydrous processing of methane into methane-sulfonic acid, methanol, and other compounds | 37 |
| 10 | US20050229553A1 | Conditions for fluid separations in microchannels, capillary-driven fluid separations, and laminated devices … | 35 |
Citation counts favour older filings inside any searched corpus — they measure influence on subsequent art, not 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 read-throughs from the composition and citation data that matter more than the raw counts.
Peak filing is five to eight years behind us
The 2017 high of 10 families, against a 2022 midpoint of 7 and a near-zero latest year, describes a field where the core interface-engineering claim space was staked out early. New entrants are more likely to be filing around existing claims than opening fresh ground.
Catalysis carries the claim density, fuels does not
B01J's 66 records versus C10L's 17 shows where the drafting effort has gone: catalytic mechanism and support structure, not downstream fuel formulation. A search strategy weighted only toward C10G/C10L will miss most of the interface-specific art.
The most-cited prior art predates the interface framing
The highest citation counts sit on records addressing three-phase suspension reactors and microchannel fluid separation rather than interface engineering by name, meaning the foundational prior art a novelty search turns up may not use the same vocabulary as newer filings.
Co-filing is rare and concentrated
Only ten co-assignee pairs appear across the corpus, with the strongest pairing linked to five joint records. Most assignees are filing solo, so licensing or joint-development activity in this space is the exception rather than the norm.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to fischer-tropsch synthesis interface engineering, with the prior art for and against each one.
Who is active, and where the field has gone quiet
Recent-year momentum across the assignees tracked in this corpus is uniformly flat: every named organisation in the momentum data shows zero filings in the latest year, consistent with the overall decline from the 2017 peak. That does not mean the underlying research has stopped — it means published claiming activity has slowed, and publication lag means the true 2025-2026 picture will only firm up over the next year or so.
Microchannel and reactor-design specialists have gone quiet
Velocys, tied to some of the strongest co-assignee pairings in this dataset alongside individual named inventors, shows no filings in the most recent year despite historical depth in microchannel fluid-separation art relevant to gas-liquid interfaces.
Established catalyst makers hold historical positions, not recent ones
Johnson Matthey's presence in the assignee set reflects accumulated catalysis expertise rather than current filing pressure — its momentum figure is flat like the rest of the tracked organisations.
The strongest collaboration link is a European energy-research pairing
Eni and IFP Energies Nouvelles account for the strongest co-assignee link in the dataset at five shared records, suggesting a sustained joint research programme rather than a one-off co-filing.
| Assignee | Recent year | YoY |
|---|---|---|
| Velocys | 0 | — |
| Fujifilm Business Innovation Corp. | 0 | — |
| Johnson Matthey PLC | 0 | — |
| Canon Inc. | 0 | — |
| Coskata, Inc. | 0 | — |
| Battelle Memorial Institute | 0 | — |
| TotalEnergies Research & Technology Feluy | 0 | — |
| Zeon Corporation | 0 | — |
Where to take this next
The landscape data points to specific follow-up work rather than a single conclusion.
Run freedom-to-operate on the pre-interface prior art
The most-cited records in this corpus predate the interface-specific vocabulary used in recent filings. A novelty or FTO search limited to "interface" terminology will miss foundational three-phase reactor and microchannel separation claims that still read on current designs.
Explore prior art in EurekaWatch the US filing channel first
With 73 of 180 families routed through the USPTO against 30 at the EPO, US prosecution history and continuation activity is the highest-value place to track new claim scope as it emerges.
Track US filings in EurekaReassess after the next publication cycle
The apparent drop to zero filings in the latest year is very likely a publication-lag artefact. Revisit the trend line in twelve to eighteen months before concluding the field has gone dormant.
Set a landscape alert in EurekaCommon questions about this landscape
In this dataset it means filings that explicitly address the catalyst-support interface, the gas-liquid interface, or the active-site interface within a Fischer-Tropsch synthesis process, rather than general reactor or catalyst-composition claims. This is a narrower and more mechanistically specific slice than a plain Fischer-Tropsch search would return. Practically, it captures work on how reactants and catalysts physically meet and exchange mass or heat, which is often the limiting factor in FT reactor performance.
The corpus shows 10 families in 2017 against a 2022 midpoint of 7 and near-zero in the latest tracked year, a pattern consistent with early claim staking followed by a maturing field rather than a collapsing one. Part of the apparent recent decline is a publication-lag artefact, since filings typically take about 18 months to appear in public databases. A genuine slowdown and a lag effect look identical in the most recent one to two years of any trend line, so the real 2024-2026 picture will not be clear until later publication cycles catch up.
The assignee set includes catalyst and reactor-engineering specialists such as Velocys, established industrial catalyst makers such as Johnson Matthey, and cross-border research partnerships such as Eni working jointly with IFP Energies Nouvelles on five shared records. However, recent-year momentum data shows all of the named organisations tracked in this corpus at zero filings in the latest year, meaning current activity should be read from filing history rather than assumed to be ongoing at prior levels.
Filing density concentrates heavily in B01J catalysis (66 records) and C10G refining (44 records), leaving thinner coverage in areas like active-site stabilisation coatings, gas-liquid boundary-layer control, and catalyst-support adhesion under thermal cycling. The co-assignee network is also sparse, with only 10 pairs identified across 180 families, suggesting collaborative or licensed approaches to these thinner branches remain relatively open. A first claim in these areas would need to be drafted narrowly around a specific mechanism to avoid the dense prior art in the core catalysis subclasses.
Not necessarily. The most-cited records in this dataset, some cited more than 90 times, address foundational three-phase reactor design and microchannel fluid separation from the early 2000s and 2010s, and older records naturally accumulate more citations simply by having been in the corpus longer. Citation count is a better signal of historical influence on subsequent patent drafting than of current commercial relevance, and a newer, lower-cited filing can still be the one that matters for a live freedom-to-operate question.
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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.