CNT / AgNW Conductive Fiber Patent Snapshot 2026
The CNT / AgNW conductive fiber patent space is highly concentrated, with Korea Electrotechnology Research Institute holding the leading position among a small group of active filers. Activity peaked around 2018 and has eased substantially since, signaling a field in decline that may reward targeted entrants in adjacent processing and composite-structure branches.
Korea Electrotechnology Research Institute leads a tightly held field
Korea Electrotechnology Research Institute is the top-ranked filer, followed by Hangzhou Gaoxene Technology Group and Changzhou University — together accounting for all of the top-ranked activity in this niche domain.
The top five filers collectively represent the entirety of the ranked applicants visible in this query’ combined total, confirming extreme concentration with no meaningful second tier.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Korea Electrotechnology Research Institute | 6 | |
| 2 | Hangzhou Gaoxene Technology Group | 2 | |
| 3 | Changzhou University | 1 |
The leaders’ positions imply that any new entrant faces a small but deeply entrenched incumbent in Korea and two Chinese filers with narrower but complementary technical footprints.
The most recent filing years are subject to publication lag and may undercount pending applications; trend readings for 2024–2026 should be treated as provisional. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Activity peaked in 2018 and has eased; chemical-filament IPC class dominates the mix
Two charts together capture how filing volume has evolved year by year and how the IPC class composition reflects the core technical routes being pursued.
Annual filing trend
Filings peaked at two records in 2018, dropped to one in 2019, and have recorded zero activity from 2022 onward in the available data. The 2024–2026 bars are subject to publication lag and should not be read as definitive silence.
↗ Hover for values · click a bar to ask EurekaTechnology composition
D01F (chemical filament and fibre features) is the visible IPC class, reflecting the core fiber-engineering focus. B82Y (nanotechnology applications), C01B (non-metallic elements), C08J (polymer processing), and H01B (cables, conductors, and insulators) each appear as secondary branches, indicating that the technology straddles nanomaterial synthesis, polymer compounding, and electrical conductor engineering.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Conductive fiber comprising metal nanobelt and car…
A conductive fiber including a metal-nanobelt-carbon-nanomaterial composite. A manufacturing method thereof includes preparing a composite including a carbon nanomaterial and metal nanobelts and manufacturing a conductive fiber by mixing the composite with a polymer. A fibrous strain sensor and a manufacturing method thereof are also provided. Thereby, a… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | 一种高强度宏观石墨烯导电纤维的制备方法 | 61 |
| 2 | 一种高强度宏观石墨烯导电纤维的制备方法 | 23 |
| 3 | Conductive fiber comprising metal nanobelt and car… | 14 |
| 4 | Conducting fibers fabricated with nano carbon mate… | 5 |
| 5 | Conductive fiber comprising metal nanobelt and car… | 4 |
| 6 | 一种碳纳米管金属复合导电纤维的制备方法和产品及其应用 | 3 |
| 7 | Conducting fibers fabricated with nano carbon mate… | 3 |
| 8 | Multilayer radar-absorbing laminate for aircraft m… | 2 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
Assignee snapshot from the current evidence set
The applicants below are visible in this query result. Because the evidence set is relatively small, read this section as a directional snapshot rather than a full competitive ranking.
Korea Electrotechnology Research Institute
The leading filer concentrates its technical work across D01F subclasses covering chemical filament and fibre features, with six patent records in the ranked list. No momentum data is available for the recent period, so trajectory cannot be quantified, but its foundational position in conductive filament engineering makes it the key prior-art reference point for any new entrant.
patent records: 6Hangzhou Gaoxene Technology Group
Hangzhou Gaoxene Technology Group holds two patent records, with technical emphasis on D01F subclasses related to chemical filament and fibre features. Its position as a commercially oriented Chinese materials group suggests an interest in scale-up and application, complementing the more research-focused Korean leader. No recent momentum data is available to characterize trajectory.
patent records: 2Frequently asked questions
Korea Electrotechnology Research Institute holds the most patent records in the ranked corpus, with a technical focus concentrated in D01F chemical filament and fibre feature subclasses.
The field is in a lifecycle decline stage. Annual filings peaked in 2018 and have been absent in the available record from 2022 onward, though the most recent years are subject to publication lag.
Patent records appear in China, South Korea, and the United States, with one PCT application. Europe is not represented in the current evidence.
D01F (chemical filament and fibre features) is the most represented IPC class. Secondary branches include B82Y (nanotechnology applications), C01B (non-metallic elements and inorganic compounds), C08J (polymer processing), and H01B (cables, conductors, and insulators).
No co-applicant collaboration is recorded in the current evidence. All filings appear to originate from single institutions rather than joint applicant partnerships.
B29C (shaping of plastics) and B32B (layered products and laminates) each appear in only one patent record, representing the sparsest coverage relative to the core fiber-engineering focus. C08K, D01D, and G01B are also low-count adjacent branches.
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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.
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