MXene Manufacturing Patents: Who Leads, Where the Gaps Are 2026
- Filings are still accelerating, not maturing: the midpoint year 2022 shows zero filings before a run-up to a peak of 6 in 2024, so this is an early-stage claim landscape.
- Nanotechnology and inorganic-chemistry classes dominate, with B82Y (10 records) and C01B (9 records) covering the great majority of the 16 families, while ceramics, capacitors and sensing applications remain thin.
- One US halogen-etching patent carries outsized weight, cited 60 times against single digits for every other record in the set — a strong signal of where downstream designers are already building around.
A young, narrow patent field built around one etching route
MXene manufacturing patenting is small in absolute terms — 16 patent families across the full 2015-2026 window — but the shape of the filing curve says the field is still opening up rather than settling down. The trend line sits at zero in 2017, stays flat through the middle of the window, and only starts climbing toward the back half, peaking at 6 families in 2024. Because publication typically lags filing by around 18 months, that 2024 peak and the single 2026 filing are both undercounts of what has actually been filed.
The technology composition points to a field still defined by its founding chemistry: elemental or halogen etching of MAX phase powders to strip the A-layer and produce layered MXene. Nanotechnology (B82Y) and inorganic compound chemistry (C01B) account for the bulk of records, while ceramics (C04B), capacitors (H01G), semiconductor devices (H01L) and water treatment (C02F) each register only one or two filings — evidence of early-stage downstream application claims rather than a mature, multi-branch industry.
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Filing trend and technology composition
The dataset spans 16 published patent families filed between 2015 and mid-2026, drawn from India, United States, China and EPO filings and classified primarily under nanotechnology and inorganic-chemistry IPC codes.
From flat to accelerating
Zero filings in 2017 and at the 2022 midpoint, followed by a run to a peak of 6 in 2024, indicates the field only recently crossed from academic curiosity to active patenting. The partial 2026 count of 1 should not be read as a slowdown given the usual 18-month publication lag.
Etching chemistry over downstream application
B82Y (10 records) and C01B (9 records) together dominate the set, reflecting a focus on the core synthesis and nanomaterial characterisation rather than end-use integration. C04B, B01J, H01G, H01L, C01G and C02F each appear only once or twice, marking ceramics composites, catalysis, energy storage, semiconductor and water-treatment applications as still lightly claimed.
Shares are the percentage of the 16 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on MXene Material Manufacturing Process with Eureka
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Try EurekaThe record other filings are built around
Preparation of layered MXene via elemental halogen etching of MAX phase
The patent describes introducing dried MAX phase powder — general formula Mn+1AXn with a wide range of permitted transition metals and metalloids — into a vessel under anhydrous, inert conditions, then reacting it with a halogen and solvent to selectively etch the A-layer and yield a layered MXene material.Filed by the United States Government as represented by the Secretary of the Air Force; granted 2024-08-06.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20210139379A1 | Preparation of Layered MXene via Elemental Halogen Etching of MAX Phase | 60 |
| 2 | CN111863310A | MXene制备方法及其作为导电银浆增强相的应用 | 7 |
| 3 | CN112885964A | 一种多场调控忆阻器及其制备方法 | 5 |
| 4 | IN202411071738A | A mxene integrated znfe2o4 nanocomposite based resistive ethanol gas sensor | 1 |
Citation counts inside a searched corpus favour older, foundational filings; treat this as a signal of influence on the field rather than of current commercial importance.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. 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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Three patterns stand out once the raw counts are read against the timeline and classification split.
One halogen-etching filing anchors the field
US20210139379A1 / US12054428B2 is cited far more than any other record in the set, with the next most-cited filing at 7 citations. That gap means most later filers are building on, or designing around, this specific elemental halogen etching route rather than an alternative synthesis path.
Filing activity splits evenly between India and the US
India and the United States each account for 6 of the 16 records, with China at 3 and EPO at 1. That even split across two very different patent systems suggests no single jurisdiction has yet become the default venue for MXene manufacturing claims.
Synthesis classes dwarf application classes
B82Y and C01B together cover the majority of the 16 families, while application-facing classes such as H01G (capacitors), H01L (semiconductors) and C02F (water treatment) sit at one or two records each. The imbalance shows claim activity is still concentrated on making the material, not on integrating it.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to mxene material manufacturing process, with the prior art for and against each one.
Who is filing, and where the gate still stands open
With only 16 families in the corpus and recent-year momentum flat across every named assignee, no single organisation has pulled decisively ahead — this is a field of first movers, not incumbents.
No assignee shows fresh-year activity
Every organisation tracked in the recent-year momentum data — including Korea Institute of Geoscience and Mineral Resources, the US Air Force, KAIST, KIST, University of Chicago and Tianjin University — shows zero filings in the latest tracked year. That is consistent with publication lag rather than a genuine pullback, but it means current league-table position is not a reliable guide to who is filing right now.
Research institutes and defence bodies, not materials majors
The named assignees are university and government research bodies rather than established materials or electronics manufacturers. That profile fits a technology still in the synthesis-and-characterisation stage, where institutional labs file first and commercial licensing or follow-on filings from industry come later.
Filing strategy is not yet jurisdiction-locked
Records land across India, the United States, China and the EPO in comparable numbers rather than clustering in one office. A new entrant has genuine choice of venue right now, rather than needing to follow an established filing pattern set by a dominant player.
| Assignee | Recent year | YoY |
|---|---|---|
| Korea Institute of Geoscience and Mineral Resources | 0 | — |
| United States Government as represented by the Secretary of the Air Force | 0 | — |
| Korea Advanced Institute of Science and Technology (KAIST) | 0 | — |
| Korea Institute of Science and Technology (KIST) | 0 | — |
| University of Chicago | 0 | — |
| Tianjin University | 0 | — |
| Harbin Engineering University | 0 | — |
| Hefei Innovation Research Institute of Beihang University | 0 | — |
Where to take this analysis
The filing base is small enough that a single new filer can materially change the competitive picture within a year or two of publication catching up.
Watch the etching-route claim boundary
The lead US halogen-etching patent sits at the centre of citation activity. Anyone developing an alternative etching chemistry — fluoride-free, molten-salt, or electrochemical routes — should map their claims against it before committing to a synthesis pathway.
Explore etching alternatives in EurekaTrack application-class filings as they emerge
Capacitor, semiconductor and water-treatment classes each carry only one or two records today. A new filing in any of these branches would meaningfully shift that class's share of the dataset, so periodic re-checks matter more here than in the core synthesis classes.
Set up monitoring in EurekaCommon questions about MXene manufacturing patents
The tracked dataset contains 16 published patent families filed between 2015 and mid-2026 that combine MXene or MAX-phase etching terms with manufacturing-process language and relevant IPC codes. That is a small corpus compared to more mature materials fields, reflecting that MXene manufacturing patenting is still in an early, accelerating phase. Because publication lags filing by roughly 18 months, the true current total is likely somewhat higher than what has been published so far.
The most heavily cited record in the dataset, US20210139379A1 (granted as US12054428B2), claims preparation of layered MXene via elemental halogen etching of MAX phase powder under anhydrous, inert conditions. Its citation count of 60 is far ahead of any other record in the corpus, indicating that this halogen-etching approach is the reference point most later filings and analyses measure themselves against. That does not mean it is the only viable route, but it is the one with the deepest paper trail behind it.
India and the United States each account for 6 of the 16 tracked records, with China contributing 3 and the European Patent Office 1. That even split between India and the US is notable because it does not match the pattern seen in many materials fields where China or the US alone dominates filing volume. For a company deciding where to seek protection first, no jurisdiction yet holds a structural advantage in this dataset.
The assignees visible in the recent-year momentum data are university and government research bodies — including defence-affiliated US government filers, Korean research institutes, and Chinese universities — rather than established materials or electronics manufacturers. This profile is typical of a technology still centred on synthesis and characterisation rather than commercial-scale integration. Momentum figures show zero filings in the latest tracked year across all of these assignees, which is consistent with normal publication lag rather than a slowdown in underlying research.
IPC classes tied to downstream applications — capacitors (H01G), semiconductor devices (H01L), water treatment (C02F) and catalysis-adjacent processes (B01J) — each carry only one or two filings in the dataset, compared to 10 in nanotechnology (B82Y) and 9 in inorganic chemistry (C01B). That imbalance suggests claim space around integrating MXene into specific devices or applications is far less occupied than claim space around the base synthesis chemistry. A first, narrowly drafted claim in one of these lighter classes would face less prior art than a new etching-process claim would.
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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.