Carbon Capture Materials Patents: Who Leads, Thin Field 2026
- A thin, recent field. just 13 published families sit inside this exact sorbent/solvent/membrane search, with filing peaking at 7 in 2023 and nothing before 2017.
- No single dominant filer. the assignee list is a mix of national energy institutes, majors and one university, each holding a handful of families rather than a deep portfolio.
- Separation dominates the classification mix. every record sits in B01D, but overlap with C01B, C02F and C10G shows most filings are process integrations, not standalone sorbent chemistry.
A narrow, process-anchored corner of CCS
This dataset isolates patent families that combine carbon capture and storage terminology with specific material claims — CO2 sorbents, amine solvents, capture membranes or MOF sorbents — inside the separation-process IPC classes (B01D53/14, B01J20/22, B01D53/62). The result is a small, tightly-scoped corpus of 13 families rather than the sprawling thousands you get from a bare “carbon capture” search. That narrowness is deliberate: it surfaces the filings where the material or solvent chemistry is actually claimed, not just mentioned as background art.
Because publication lags filing by roughly 18 months, the most recent filing year in this trend is understated and should not be read as a drop-off in activity. The picture that does hold up across the window is a field still being staked out: a peak year, then no clear compounding trend into the following year.
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Filing trend and technology composition
Two views of the same 13-family corpus: when the filings landed, and which IPC subclasses they touch beyond the core separation class.
Filing trend
Filings were at zero in 2017, climbed to a peak of 7 in 2023, and sat at zero again at the 2022 midpoint of the window — a pattern of a short, concentrated burst rather than sustained growth. Read the tail years as incomplete, not as decline, given normal publication lag.
IPC composition
All 13 records classify under B01D (separation processes), the anchor for the search. Six each also touch C01B (inorganic compounds) and C02F (water/wastewater treatment), five touch C10G (hydrocarbon refining), four touch B01J (catalysis), and a single record reaches into F02C (gas turbines) — signalling that most of this activity is filed as part of an integrated process rather than as a standalone sorbent or membrane composition.
Shares are the percentage of the 13 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
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This page is one run against one query. Ask Eureka your own question about carbon capture and storage advanced materials and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records in this corpus
Process and system for producing fuel
A process and/or system for producing fuel using renewable hydrogen having a reduced carbon intensity. The renewable hydrogen is produced via methane reforming, with feedstock comprising upgraded biogas sourced from multiple biogas plants. Each upgraded biogas is produced by collecting biogas containing methane and CO2, capturing at least 50% of the CO2 originally present, and producing the upgraded biogas — with storage of the captured CO2 reducing the fuel's carbon intensity.Filed by Iogen Corporation, published 2023-09-21.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US11946001B2 | Process and system for producing fuel | 13 |
| 2 | US20230295523A1 | Process and system for producing fuel | 12 |
| 3 | US20230374394A1 | Process and system for producing fuel | 4 |
| 4 | US12359134B2 | Process and system for producing product | 2 |
Citation counts inside a bounded corpus like this one skew toward older records with more time to accumulate citations — treat them as a signal of influence within this dataset, not as a current-importance ranking.
Publication numbers are shown where the record carries one (4 of 4 rows); clicking a row searches Eureka by that number.
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Browse MCP servers →What the numbers say about this field
Three read-outs from a small but tightly-scoped dataset: how concentrated the activity is, where it classifies, and what the most-cited records have in common.
A niche, not a crowded field
With only 13 families matching this specific sorbent/solvent/membrane search, there is no dense thicket of overlapping claims here the way there is in broader CCS or battery-materials searches. That makes freedom-to-operate analysis tractable but also means any single grant carries more relative weight.
A burst, not a build
Filing went from zero at the 2017 start of the window to a peak of 7 in 2023, with the 2022 midpoint flat at zero. That shape points to a handful of near-simultaneous filings around a common trigger rather than compounding, sustained R&D investment.
Process integration over standalone chemistry
Every record sits in B01D, but the next-heaviest subclasses — C01B, C02F, C10G, B01J — point to capture material claims embedded inside fuel, water-treatment or refining processes rather than filed as pure sorbent or membrane composition claims.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to carbon capture and storage advanced materials, with the prior art for and against each one.
Who is filing, and where they are not
The assignee list mixes a Canadian biofuels specialist, national energy research institutes, an oil major and a university — each holding a small number of families rather than a defensive wall of filings.
Even the most active filer has gone quiet
Iogen Corporation appears as the assignee behind the most-cited record in this corpus, yet its own latest-year filing count dropped to zero, a -100% year-on-year change. That is consistent with the broader flat-to-declining trend rather than a signal specific to one company.
US-centred, but not exclusively
The United States receives the largest single share of filings (5), with India, South Korea and WIPO/PCT each taking a share and single filings reaching China and the UK. That spread suggests applicants are still testing which jurisdictions matter rather than committing to a global filing strategy.
No portfolio builder has emerged
Every assignee tracked for recent-year momentum — spanning a Korean energy institute, a French energy major, an Indian national oil company and a Chinese university — shows zero filings in the latest year. No single organisation is compounding a lead here yet.
| Assignee | Recent year | YoY |
|---|---|---|
| IOGEN CORPORATION | 0 | -100% |
| Korea Institute of Energy Research | 0 | — |
| TotalEnergies OneTech | 0 | — |
| Technip Energies France | 0 | — |
| Indian Oil Corporation | 0 | — |
| Nanjing University | 0 | — |
| ABRALIN SOFTECH PTE LTD | 0 | — |
Where to take this analysis
This landscape flags where the claim space sits and how thin it is; the next step is testing specific claim language and filing strategy against it.
Check a specific claim against this corpus
Run a candidate sorbent, solvent or membrane claim through Eureka's freedom-to-operate search to see which of these 13 families it lands closest to, and where the gaps in coverage actually are.
Open Eureka →Watch for the next filing burst
Given the 2023 peak and subsequent flat-to-zero trend, set up monitoring for new filings from the assignees already active here, since a second burst is plausible given the field's early stage.
Set up monitoring in Eureka →Common questions about this landscape
Within this specific search — combining CCS terminology with CO2 sorbent, amine solvent, capture membrane or MOF sorbent claims inside the B01D53/14, B01J20/22 and B01D53/62 IPC classes — there are 13 published patent families covering 2015 through mid-2026. That is a small, bounded number compared with broader CCS searches, because this one specifically isolates material and solvent claims rather than process or storage-site claims. Anyone quoting a much larger figure is likely using a wider search scope.
No single company dominates this dataset. Iogen Corporation holds the most-cited record in the corpus, a fuel-production process that captures and reuses CO2, but its own filing activity has since dropped to zero in the latest tracked year. National energy research institutes, an oil major and a university also appear among the assignees, each with a small number of families rather than a deep, defensive portfolio.
The filing trend shows a peak of 7 families in 2023 but flat activity at zero in the 2022 midpoint of the window, which points to a short burst of filings rather than sustained, compounding growth. Because publication typically lags filing by around 18 months, the most recent years in any trend understate true activity, so it is too early to call this a decline. The honest read is that the field is small and its growth pattern is not yet established.
US20230295523A1, filed by Iogen Corporation and published in September 2023, covers a process and system for producing fuel from renewable hydrogen made via methane reforming, where the feedstock includes biogas upgraded by capturing at least 50% of the CO2 originally present in it. The claim ties the reduced carbon intensity of the resulting fuel to the storage of that captured CO2. It is a process-integration claim rather than a standalone sorbent or membrane composition claim, which matters for anyone assessing whether their own material-only claim would conflict with it.
The IPC composition shows every record anchored in B01D (separation processes) but with meaningful overlap into C01B, C02F, C10G and B01J, suggesting most filed claims are process integrations rather than pure sorbent, solvent or membrane chemistry claims. That leaves sub-areas like MOF sorbent regeneration cycling, degradation-resistant amine formulations, and capture-membrane integration with gas turbines relatively thin in this corpus. Given only 13 families total, a well-drafted composition or formulation claim in these areas would not be crowding against much prior art here.
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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.