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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/carbon-dioxide-transport-patent-landscape-patent-landscape/ · Patsnap · data cut-off 2026-08-31 · downloaded from the live page
Patent Landscape · Carbon Capture, Utilization & StorageCarbon-Dioxide Transport Patents: Who Files, What They Claim, Where the Gaps Sit
- 48.0% concentration. The top 5 of 63 ranked assignees account for 122 of the 254 records in scope — filing is concentrated, but a long tail of single- and few-filing entrants still holds the majority of the field.
- Filing cooled after 2021. Filings ran from 27 in 2021 to 16 in 2024, a 41% pullback over that span, even after a 2023 peak of 48 in a single year.
- Separation and catalysis dominate the claims. B01D separation processes (32.3%), C01B inorganic compounds (30.7%) and B01J catalysis (27.6%) cover the largest shares of the 254 records, leaving bioreactor and electrolytic routes comparatively thin.
254
Published Records
48%
Top-5 Share of All Records
-41%
Filing Growth 2021→2024
US
Leading Jurisdiction
Filing growth compares 2021 (27 records) with 2024 (16) — 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 254 records in scope (CR5), not by the ranked leaders only.
Published byPatsnap Research··7 min readSourced from Patsnap Eureka
Overview
What this landscape covers
This dataset tracks 254 published patent records matching carbon-dioxide transport and pipeline claims combined with capture, sorbent regeneration, storage integrity or storage reservoir language, filed between 2015 and the 2026 cut-off. It spans receiving offices in the United States, WIPO/PCT, Europe, Canada, Australia and Israel, capturing both domestic-first filers and applicants pursuing multi-jurisdiction protection.
Because publication lags filing by roughly 18 months, the most recent one to two years in any trend understate true filing activity; 2024 is the last year that can be read as materially complete.
Filing activity and technology composition, 2015–2026
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on Carbon-Dioxide Transport Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
The Numbers
Filing trend and technology composition
Two views of the same 254-record dataset: the year-by-year filing curve, and how those records distribute across IPC subclasses. Because a single record can carry several IPC classes, the subclass shares below sum to well over 100% of the 254 records.
Filings rose to a 2023 peak, then eased
Annual filings climbed from 10 in 2017 to a peak of 48 in 2023. The 2021-to-2024 window shows a 41% pullback, from 27 to 16 filings — a real cooling, not an artifact, though 2025 and 2026 figures are still filling in as publications catch up to filing dates.
Separation, inorganic chemistry and catalysis lead
B01D (separation processes) and C01B (non-metallic elements and inorganic compounds) each cover roughly a third of the 254 records, with B01J catalysis close behind at 27.6%. Bioreactor apparatus (C12M, 9.8%) and electrolytic production (C25B, 12.2%) sit at the thin end, alongside hydrocarbon refining (C10G, 10.2%) and water treatment (C02F, 10.2%).
Shares are the percentage of the 254 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Source: Patsnap Eureka. Filing trend and technology composition. Derived from a Patsnap search on Carbon-Dioxide Transport Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.
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The most-cited prior art in this space
Representative Filing
Method for liquefying ammonia
L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE
A method for liquefying ammonia can include the steps of: providing a pressurized carbon dioxide stream from a power generating facility; expanding the pressurized carbon dioxide stream to a lower pressure that is sufficient to produce a dual phase carbon dioxide fluid; introducing the dual phase carbon dioxide fluid to a gas-liquid separator; withdrawing a liquid stream from the gas-liquid separator; and liquefying an ammonia gas stream in an ammonia liquefier by indirect contact with the liquid stream from the gas-liquid separator, thereby forming a liquid ammonia stream and a gaseous carbon dioxide stream.Filed by Air Liquide, this record ties CO2 stream conditioning directly to ammonia liquefaction — a coupling worth checking against before claiming similar dual-phase separator integrations.
Most-cited records in the dataset
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US4344486A | Method for enhanced oil recovery | 227 |
| 2 | US20170341942A1 | Methods and systems for large scale carbon dioxide utilization from lake KIVU via a co2 industrial utilizatio… | 208 |
| 3 | US6648944B1 | Carbon dioxide removal process | 120 |
| 4 | US7955403B2 | Systems and methods for producing substitute natural gas | 85 |
| 5 | US20100011664A1 | Systems and methods for producing substitute natural gas | 62 |
| 6 | US20090101008A1 | Carbon dioxide permeable membrane | 59 |
| 7 | US7909911B2 | Carbon dioxide permeable membrane | 56 |
| 8 | WO2022031726A2 | System and method for carbon dioxide reactor control | 50 |
| 9 | US20220136119A1 | System and method for carbon dioxide reactor control | 47 |
| 10 | — | Process for conditioning a high carbon dioxide content natural gas stream for gas sweetening | 43 |
Citation counts favour older records in any searched corpus; treat them as a signal of influence on the field rather than of current commercial relevance.
Publication numbers are shown where the record carries one (9 of 10 rows); clicking a row searches Eureka by that number.
Source: Patsnap Eureka. Citation counts and representative records. Derived from a Patsnap search on Carbon-Dioxide Transport Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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What the data means for filing strategy
Three read-throughs from the concentration, trend and classification figures above.
Concentration
48.0% / top 5
of 254 records
Filing sits with a small group, but not a monopoly
The five leading assignees hold 48.0% of the 254 records in scope, and the leading assignee alone accounts for 50 records. That leaves more than half the field to a long tail of 58 further ranked assignees, many with only a handful of filings — real room for a new entrant to establish a position rather than fight an entrenched leader head-on.
Based on the 63-company assignee ranking
Momentum
27 → 16
filings, 2021 to 2024
Activity peaked in 2023 and has since eased
After climbing steadily from 10 filings in 2017, the field peaked at 48 filings in 2023 before pulling back to 16 by 2024 — a 41% decline over the 2021–2024 window. That is a genuine cooling in disclosed activity, not simply an artifact of publication lag, since 2024 is the last complete year on record.
Peak year: 2023 at 48 filings
Classification
32.3% B01D
of 254 records
Separation and catalysis claims crowd the core
B01D separation processes, C01B inorganic compounds and B01J catalysis together cover the bulk of filing activity, each touching upwards of a quarter of all 254 records. Bioreactor-based routes (C12M) and electrolytic production (C25B) are claimed far less often, at under 13% each — thinner prior art there, but also a smaller commercial base to build on.
IPC subclass shares, all 254 records
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Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to carbon-dioxide transport patent landscape, with the prior art for and against each one.
Co-filing is rare in this field
| Assignee | Co-assignee | Shared families |
|---|---|---|
| Kellogg Brown & Root Inc | SHIRES PHILIP | 3 |
| Kellogg Brown & Root Inc | ARIYAPADI SIVA | 3 |
| Air Products and Chemicals, Inc. | General Electric Company | 2 |
| Codexis, Inc. | NOVICK SCOTT | 2 |
| Codexis, Inc. | ALVIZO OSCAR | 2 |
Only 5 co-assignee pairs appear across the dataset, the strongest tied to shared inventors at a single engineering firm — most work here is filed solo rather than through joint ventures or research consortia.
Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on Carbon-Dioxide Transport Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Who's Filing
Assignee landscape and recent momentum
The ranking covers all 63 assignees the data endpoint returns for this search, not a top-50 or top-100 cut. The leader holds 50 records; fifth place holds 14; tenth place holds 8 — a steep drop-off after the top few that flattens into a long tail.
Leader
50 records
single assignee
One filer sets the pace by a wide margin
The top-ranked assignee holds 50 of the 254 records — more than three times the fifth-place total of 14. That gap suggests a deliberate, sustained filing program rather than incidental disclosure, and any freedom-to-operate review in this space should start there.
Top of 63 ranked assignees
Mid-field
14 → 8
5th to 10th place
The drop-off after the leader is steep but not a cliff
Fifth place holds 14 records and tenth place holds 8 — together with the leader, the top 10 account for 68.9% of all 254 records. Below that line, filing activity thins out fast into single- and double-digit contributors.
Top 10 combined: 175 records, 68.9%
Recent activity
0–1 filings
latest year, top assignees
Most established filers went quiet in the latest year
Among the assignees with the strongest recent-year momentum data, activity in the latest year is essentially flat — one filer recorded a single filing, the rest recorded none. That likely reflects publication lag more than a genuine stop in R&D, since 2025–2026 filings are still working through the pipeline.
Latest-year filings by leading assignees
Recent-year filing momentum by assignee
| Assignee | Recent year | YoY |
|---|---|---|
| Brisa International LLC | 1 | — |
| Infinium Technology LLC | 0 | — |
| IOGEN CORPORATION | 0 | — |
| Twelve Benefit Corporation | 0 | — |
| Kellogg Brown & Root Inc | 0 | — |
| Air Products and Chemicals, Inc. | 0 | — |
| Codexis, Inc. | 0 | — |
| KOLOMA INC | 0 | — |
Source: Patsnap Eureka. Assignee-level momentum. Derived from a Patsnap search on Carbon-Dioxide Transport Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
What's Next
Where to take this analysis
The dataset points to a field with a clear leader, a cooling filing rate, and a handful of under-claimed technical branches. Turning that into a filing or licensing decision means going deeper than the aggregate numbers shown here.
Run a freedom-to-operate check against the leader
With one assignee holding 50 of 254 records, a claim-by-claim review of that portfolio is the first step before filing in the dense separation or catalysis classes.
Explore assignee portfolios in EurekaMap the thin classes before they fill in
C12M and C25B carry the lowest filing density in this dataset; a fast-follower filing there faces less prior art today, but that window narrows as filings from 2024–2026 continue to publish.
Track white space in EurekaSource: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on Carbon-Dioxide Transport Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
FAQ
Common questions on CO2 transport patents
One assignee leads the ranked field with 50 of the 254 records in scope, well ahead of the fifth-ranked assignee at 14 records. The top 5 assignees combined hold 48.0% of all records, and the top 10 combined hold 68.9%. Below that, the remaining 53 of the 63 ranked assignees each hold small counts, forming a long tail rather than a second tier of comparable size.
Filings grew from 10 in 2017 to a peak of 48 in 2023, then fell to 16 by 2024 — a 41% decline over the 2021-to-2024 window. That pullback is measured against 2024, the last year with materially complete publication data; 2025 and 2026 figures are still catching up because publication typically lags filing by around 18 months. Treat the recent apparent drop as a real trend through 2024, not as evidence about the last one to two years specifically.
B01D (separation processes such as filtration) covers 32.3% of the 254 records, C01B (non-metallic elements and inorganic compounds) covers 30.7%, and B01J (catalysis and chemical/physical processes) covers 27.6%. These three subclasses overlap heavily, since many records claim a separation step alongside a catalytic or inorganic-chemistry element. Less-claimed areas include bioreactor apparatus (C12M, 9.8%) and electrolytic production (C25B, 12.2%), which represent comparatively open claim space.
The thinnest-claimed IPC subclasses in this dataset are C12M (bioreactors and enzyme apparatus, 9.8% of records) and C25B (electrolytic production of compounds, 12.2%), alongside C02F water treatment and C10G hydrocarbon refining integration, both at 10.2%. These branches carry less prior art than the dominant separation and catalysis classes, making them a more viable starting point for a first claim, though the smaller base also signals a smaller proven commercial pathway so far. A first claim there would need to tie a specific bioreactor or electrolytic step to the CO2 stream conditioning language that anchors this search.
Co-assignment is rare in this dataset: only 5 co-assignee pairs appear across all 254 records. The strongest pairings link shared inventors within a single engineering firm rather than cross-company joint ventures. This suggests most filing activity in the field is driven by individual companies' internal R&D programs rather than formal collaborations or consortia, at least based on what is captured in assignee metadata.
Answers are grounded in the same dataset. Derived from a Patsnap search on Carbon-Dioxide Transport Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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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.