Aramid Fiber Coating Patents: Top Companies & Filing Trends 2026
Data-led look at 540 aramid fiber coating patent records: who leads filing, where the D06M treatment core sits, filing trends through 2026, and where the white space is.
Filing growth = 2021 (18 records) → 2024 (18); 2024 is the last year we treat as complete. Top-5 share = the 5 largest assignees ÷ all 540 records in scope (CR5), not the ranked leaders only.
What this dataset covers
This landscape covers 540 published patent records filed against aramid fibre coating and related fibre-treatment claims, drawn from IPC classes D01, D03, D04 and D06M and filtered to records that specifically discuss coating, finishing or surface treatment of aramid fibre. Coverage runs from 2015 through the 2026 data cut-off, though publication lag of roughly 18 months means the most recent one to two years understate actual filing activity.
Records are grouped by patent family in the assignee ranking so that continuation filings and multi-jurisdiction copies of the same invention are not double-counted, giving a fairer picture of who actually holds distinct inventions rather than who has filed the most paperwork.
Filing trends and technology composition
The 540 records in scope span 2015 to the 2026 data cut-off, with publication lag meaning the most recent two years are still filling in. The technology composition chart below uses IPC subclasses, and because a single record can carry several classes, the shares add to more than 100% of the 540-record total.
Filing activity, 2017-2026
Filings peaked in 2017 at 21 and have run roughly flat since: 2021 and 2024 both recorded 18 filings, a 0% change over that three-year span. Treat 2025 and 2026 figures as undercounts until publication catches up.
Publication lags filing by roughly 18 months, so 2025 onwards are still filling in. Growth rates on this page therefore end at 2024; running them to the last bar would understate the field.
Technology composition by IPC subclass
Textile chemical treatment (D06M) dominates at 74.4% of the 540 records, far ahead of chemical filament and fibre features (D01F, 20.0%) and polymer processing (C08J, 18.7%). Layered products, polymer compositions, weaving, yarn texturing and additive use each sit below 14%, marking the thinner, less-claimed branches of the field.
Shares are the percentage of the 540 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Aramid Fiber Coating Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about aramid fiber coating patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative filing and most-cited records
Face texture of fabric (JP1993321070A)
Filed in 1993, this record describes a three-dimensionally bonded textile fabric built from metal-coated synthetic fibres — including aramid and polyethylene fibres — joined to each other through metal fibres, with a protective cover attached to the outside. The stated use is protective space suits, space shielding and other protective garments.One of the earliest metal-coated, mechanically-bonded fibre constructions in the dataset, predating the chemically-focused treatment claims that now dominate filing activity.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20070194490A1 | Method of making improved ballistic products | 79 |
| 2 | US20040221712A1 | Ballistic-resistant laminate assemblies and panels | 64 |
| 3 | US5674615A | Spin finished aramid fibers and use thereof | 60 |
| 4 | US5302415A | Electroless plated aramid surfaces and a process for making such surfaces | 55 |
| 5 | US5275625A | Surface treated aramid fibers and a process for making them | 52 |
| 6 | US6432537B1 | Diamond-like-carbon coated aramid fibers having improved mechanical properties | 48 |
| 7 | CN102535167A | 一种轴承用自润滑复合材料衬垫及其制备方法 | 46 |
| 8 | WO2016057816A1 | Modification of fibers with nanostructures using reactive dye chemistry | 44 |
| 9 | US5443896A | Surface treated aramid fibers and a process for making them | 43 |
| 10 | US5520705A | Surface treated aramid fibers and a process for making them | 42 |
Citation counts favour older records in any searched corpus — read them as a signal of influence on later filings, 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. Each row carries its publication number; clicking a row searches Eureka by that number.
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These figures come directly from the 540 records in scope and the ranked assignee list behind them. Read them as a map of where claim space is occupied, not as a verdict on which technology is best.
Ownership is concentrated at the top
The top 5 assignees combined hold 190 of the 540 records in scope, and the top 10 hold 246, or 45.6%. That leaves a long tail of the remaining 90 ranked companies each holding a much smaller share, so most freedom-to-operate risk sits with a handful of established filers.
Surface treatment dominates the claim space
Textile chemical treatment (D06M) appears in nearly three-quarters of all records, far ahead of chemical filament features (D01F, 20.0%) and polymer processing (C08J, 18.7%). New filings aimed at finish chemistry are entering the most crowded part of the field.
A mature field, not a growing one
Filings peaked at 21 in 2017 and have held flat since — 18 in 2021, 18 again in 2024. Publication lag means 2025-2026 figures will rise as more records are published, so this flat reading, not the recent dip, is the reliable signal.
China leads filing volume by a wide margin
China's 184 filings outpace the United States (68) and South Korea (67) combined receiving-office counts by a wide margin, with Europe, Japan and Canada trailing further behind. Any clearance search needs to prioritise China alongside the US and Korea.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to aramid fiber coating patent landscape, with the prior art for and against each one.
| Assignee | Co-assignee | Shared families |
|---|---|---|
| E.I. du Pont de Nemours & Co. (USA) | The Regents of the University of California | 14 |
| E.I. du Pont de Nemours & Co. (USA) | Stephenson Group Ltd. | 6 |
| Kolon Industries, Inc. | Korea Advanced Institute of Science and Technology (KAIST) | 5 |
| Soochow University | Liang Guozheng | 4 |
| Soochow University | Soochow University Zhangjiagang Institute of Industrial Technology | 3 |
| Applied NanoStructured Solutions, LLC | SHAH TUSHAR K | 2 |
| Applied NanoStructured Solutions, LLC | MALECKI HARRY C | 2 |
| Applied NanoStructured Solutions, LLC | GARDNER SLADE H | 2 |
Only 10 co-assignee pairs appear across the dataset, and the strongest pairings cluster around a small number of established filers rather than spreading across the field — most patenting here happens without a named co-assignee.
Where to take this analysis
The figures here identify where filing is concentrated and where it is thin. Turning that into a filing or freedom-to-operate decision means going claim by claim.
Check freedom to operate against the top 10
The top 10 assignees hold 45.6% of the 540 records in scope. Before filing into the D06M treatment core, run the specific claim language of those holders against your proposed formulation or process.
Run a claim comparison in EurekaDraft into the thinner branches
Additive use (C08K) and yarn texturing (D02G) each sit under 11% of records, well below the treatment core. Model a first claim there before committing R&D spend to the crowded surface-treatment route.
Explore white space in EurekaTrack the flat filing trend for a turn
Filing has held at roughly 18 per year through 2024 after peaking in 2017. Watch whether 2025-2026 publications, once complete, show renewed growth or confirm a mature plateau.
Monitor filing trends in EurekaFrequently asked questions
Across the 540 records in scope, the leading assignee holds 130 records, well ahead of the rest of the ranked field. The top 5 assignees combined hold 190 records, or 35.2% of all 540 records, and the top 10 combined hold 246 records, or 45.6% of the total. The ranking itself covers 100 companies returned by the data endpoint, not an arbitrary top-50 or top-100 cut, so treat it as the full picture the dataset provides rather than a curated shortlist.
Textile chemical treatment, classified under IPC subclass D06M, appears in 74.4% of the 540 records in scope, making it by far the most heavily claimed route. This covers chemical finishing and surface treatment applied to aramid fibre rather than changes to the base polymer or fibre-formation process. The next largest classes, D01F (chemical filament and fibre features) and C08J (polymer processing), sit at 20.0% and 18.7% respectively, confirming that treatment chemistry rather than fibre construction is where most filing activity concentrates.
Filing activity peaked in 2017 at 21 records and has been roughly flat since, with 2021 and 2024 both recording 18 filings — a 0% change over that three-year span. Figures for 2025 and 2026 should not be read as a decline, because publication typically lags filing by around 18 months and those years are still filling in. The honest read is a mature, steady field rather than one that is accelerating or contracting.
The thinnest branches by filing density are additive use in polymers (C08K, 8.9% of the 540 records) and yarn texturing and crimping (D02G, 10.0%), both well below the 74.4% held by the dominant textile-treatment class. Co-assignee collaboration is also limited, with only 10 co-assignee pairs identified across the whole dataset, suggesting these adjacent branches have not attracted the same concentrated, collaborative filing seen in the core treatment space. That combination of low density and low collaboration is the clearest signal of room to file a differentiated claim.
China leads with 184 filings among the receiving offices tracked, followed by the United States at 68 and South Korea at 67. Europe (EPO) accounts for 54 filings, Japan 31 and Canada 30. The concentration in China and the roughly even split between the US, South Korea and Europe suggests any freedom-to-operate review needs to check at least these three regions rather than relying on a single-jurisdiction search.
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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.