Electrospun Nanofiber Coating Patents: Leaders & White Space 2026
A patent landscape review of electrospun nanofiber fiber coating technology: who holds the leading families, how filings have trended since 2017, which IPC subclasses concentrate the claim space, and where white space re
What the electrospun nanofiber fiber coating dataset covers
This landscape draws on 11 published records filed or published between 2015 and the 2026 data cut-off, matched against Cooperative and International Patent Classification codes for man-made filament spinning and textile chemical treatment (D01, D03, D04, D06M). Coverage spans multiple receiving offices, with the United States accounting for the largest single share of filings, followed by smaller counts across Australia, Europe, Canada, China and the WIPO PCT route. The scope is narrow by design: it isolates fiber coating work specific to electrospun nanofiber structures rather than nanofiber production or textile coating in general.
Because publication typically lags filing by around 18 months, the most recent year in the trend line is understated and should be read as a floor, not a ceiling. The picture that emerges is one of a small, technically dense field: a handful of assignees hold the majority of the ranked activity, and the classification profile shows the work sitting squarely between fiber spinning and biomedical or sterilising applications rather than spreading across general textile chemistry.
Filing trend and technology composition
Two views of the same 11-record dataset: how filing activity moved year over year, and which IPC subclasses the records cluster into.
Filing trend: a 2017 peak followed by a decline
Filings rose to 8 records in 2017, the peak year for this dataset, then fell off toward zero by 2026. With fewer than four complete post-lag years available, no reliable growth rate can be stated — but the shape does not resemble a technology still in its filing ramp.
IPC composition: spinning and biomedical classes dominate
D01D (man-made filament spinning) appears in all 11 records in scope, and A61L (sterilising and disinfecting) and A61K (medicinal preparations) each cover the large majority of records — 10 and 9 respectively. D06M (textile chemical treatment) reaches under half the records, and D06N (coated and impregnated fabrics) and D01F (chemical filament and fibre features) cover a smaller minority. Because a single record can carry several classes, these shares add to more than 100% of the 11-record total and should be read as overlap, not as a partition.
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 Electrospun Nanofiber Fiber Coating Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about electrospun nanofiber fiber coating patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records in this dataset
Elastic electrically-driven thermochromic sensing fiber with a sheath-core structure
A sheath-core structured elastic, electrically-driven thermochromic sensing fiber, produced by first pre-treating a polyurethane fiber substrate to improve surface adhesion, then ultrasonically depositing graphene exfoliated from cellulose nanocrystals in an ordered coating on that substrate to give a flexible, stretchable, conductive fiber. Polyurethane nanofibers carrying different thermochromic inks are then electrospun onto the surface of this elastic fiber to form the finished sheath-core sensing fiber, which combines mechanical durability with electro-thermal performance and force-electric synergistic enhancement of its color-change response.Filed by Wuhan Textile University, published 2021-03-19.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20190209732A1 | Nanofiber Structures and Methods of Use Thereof | 20 |
| 2 | CN112522809A | 一种皮芯结构弹性电驱动热致变色传感纤维及其制备方法 | 11 |
| 3 | WO2018064281A1 | Nanofiber structures and methods of use thereof | 9 |
| 4 | US11318224B2 | Nanofiber structures and methods of use thereof | 8 |
| 5 | US20220226537A1 | Nanofiber Structures and Methods of Use Thereof | 3 |
Citation counts reward older filings that have had more time to accumulate citers within the searched corpus; treat them as a signal of influence on the field's early claim structure, not as a measure 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 (5 of 5 rows); clicking a row searches Eureka by that number.
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Three read-outs from the assignee ranking, the filing trend and the classification overlap.
One filer dominates a thin ranked field
The assignee ranking returned by this dataset lists only three companies, and the leader holds 10 of the records tracked in that ranking. A fifth-place position is not resolved by the data, which itself tells you the tail is short rather than long.
Activity peaked in 2017 and has since tapered
Filings reached 8 records in 2017, the highest single year in the dataset, and declined toward the 2026 cut-off. Publication lag of roughly 18 months means the final year or two is always undercounted, but the multi-year downward slope predates that lag window.
Every record touches filament spinning; most also touch biomedical use
D01D covers all 11 records in scope, while A61L and A61K each cover the large majority. That overlap places most of this landscape at the intersection of spinning process claims and biomedical or sterilising application claims, rather than in general textile coating chemistry.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to electrospun nanofiber fiber coating patent landscape, with the prior art for and against each one.
Where to take this analysis
The dataset points to a concentrated leader position and a classification profile skewed toward biomedical application. Two natural next steps follow from that.
Map the leader's claim boundaries
With one assignee holding the bulk of the ranked records, understanding exactly what its granted claims cover — and where they stop — is the fastest way to find defensible space nearby.
Explore claims in EurekaTest under-claimed branches
D06N and D01F cover only a small minority of records despite sitting adjacent to the dominant spinning and biomedical classes. That gap is worth probing before assuming the field is fully occupied.
Run a white space search in EurekaCommon questions about electrospun nanofiber fiber coating patents
The assignee ranking for this dataset lists only three companies, and the leading one holds 10 of the records tracked in that ranking. That is a small, concentrated field rather than a broad competitive one — a fifth-place position is not even resolved by the available data. Anyone filing new applications here should expect to run directly into that leader's existing claim scope rather than into a crowded field of many similarly sized competitors.
Filings peaked at 8 records in 2017 and declined toward the 2026 data cut-off, with the most recent years showing very low counts. Because publication lags filing by roughly 18 months, the last year or two will always look artificially low, so the true 2025–2026 filing level is understated in the raw trend. Even accounting for that lag, the multi-year decline predates the window affected by lag, suggesting genuine cooling rather than a reporting artefact alone.
Every record in this 11-record dataset carries IPC class D01D, man-made filament spinning, making it the universal classification for this topic. A61L (sterilising and disinfecting) and A61K (medicinal preparations) each cover the large majority of records, while D06M (textile chemical treatment) covers under half and D06N (coated and impregnated fabrics) and D01F (chemical filament and fibre features) cover smaller minorities. Because records often carry several classes at once, these figures overlap rather than summing to a clean total.
CN112522809A describes a sheath-core structured elastic, electrically-driven thermochromic sensing fiber, built by coating a polyurethane fiber substrate with graphene exfoliated from cellulose nanocrystals, then electrospinning thermochromic-ink-loaded polyurethane nanofibers onto that coated surface. Its claim scope centres on that specific sheath-core construction and the sequence of surface pre-treatment, graphene coating and nanofiber electrospinning used to build it, rather than on thermochromic sensing fibers in general. A team working on a materially different coating chemistry or a different fiber architecture would need its own freedom-to-operate review, but this single record does not by itself foreclose the whole field.
The classification data shows D06N (coated and impregnated fabrics) and D01F (chemical filament and fibre features) each covering only a small minority of the 11 records, well behind the near-universal D01D and the dominant A61L and A61K biomedical classes. That gap suggests coating-fabric integration and fibre-feature-specific claims are comparatively under-claimed relative to the spinning-process and biomedical-application space the leading assignee already occupies. It is a narrower opportunity than the headline numbers imply, given the small total record count, but it is the part of the landscape least covered by the dominant filer.
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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.