Recycled Textile Fiber Advanced Materials Patent Landscape 2026
- Filing activity has already peaked. 2020 was the high point at 8 filings; the midpoint year 2022 sits at 5, and the trend since is flat to declining rather than accelerating.
- Fibre and polymer processing dominate the claim map. C08J and D01F each carry 10 of the 20 records, with D01D close behind at 9 — spinning-solution and filament-formation claims are where the density sits.
- One document carries almost all the citation weight. US20240092991A1 is cited 20 times, dwarfing the next most-cited record at 3 citations — a strong signal of influence concentrated in a single filing.
Filing growth compares 2021 (1 records) with 2024 (0) — 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.
What the filings actually cover
The dataset tracks 20 patent families filed against a search string built around recycled textile, textile recycling and
Filing offices skew European: EPO leads with 6 records, ahead of the US, WIPO/PCT and Canada at 2-3 each. That distribution suggests the commercially active jurisdictions for this technology are still concentrated in Europe, with US and PCT filings representing a smaller but present share of applicants seeking broader coverage.
Filing trend and IPC composition
Twenty patent families, a filing peak already behind us, and a technology mix concentrated in fibre and polymer processing classes rather than waste handling.
Filings by year, 2015-2026
Filings rose from zero in 2017 to a peak of 8 in 2020, then eased to 5 by the midpoint year 2022. Because publication typically lags filing by around 18 months, the most recent years understate true filing activity, but even allowing for that lag the shape is a plateau, not a ramp.
IPC subclass distribution
C08J (polymer processing & solutions) and D01F (chemical filament & fibre features) each hold 10 of the 20 records, with D01D (man-made filament spinning) close behind at 9. B09B (solid waste disposal) and the pulp-related classes (D21B, D21C, D21H) each sit at 3-5 records, showing that upstream waste-sorting and pulp-conversion claims are present but thinner than the fibre-formation core.
Shares are the percentage of the 20 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Recycled Textile Fiber Advanced Materials with Eureka
This page is one run against one query. Ask Eureka your own question about recycled textile fiber advanced materials and every answer comes back with the patent numbers behind it.
Try EurekaThe documents shaping this space
Preparation method and device for producing recycled fiber spinning solution using solvent method
The invention discloses a preparation method and a production device for producing a recycled fiber spinning solution with using a solvent, which comprises two or more vertical wiped film evaporators connected with a single horizontal cylindrical kneading reactor. The aqueous mixture of cellulose and solvent and auxiliary agent is prepared into a spinnable cellulose spinning dope, which is characterized by injecting the material mixture into two or more vertical wiped film evaporators and a horizontal cylindrical kneading reactor, each unit preferably equipped with a separate condensing system.Filed by LIST TECHNOLOGY AG, published 2022-10-06.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20240092991A1 | Modular textile recycling system and process | 20 |
| 2 | WO2020254232A1 | Preparation method and device for producing recycled fiber spinning solution using solvent method | 3 |
| 3 | US20220316095A1 | Preparation method and device for producing recycled fiber spinning solution using solvent method | 1 |
Citation counts are drawn from a bounded corpus and favour older filings that have had more time to accumulate citations; treat them as a marker of influence, not of current commercial weight.
Publication numbers are shown where the record carries one (3 of 3 rows); clicking a row searches Eureka by that number.
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Browse MCP servers →What the numbers mean for strategy
Three patterns stand out once the raw counts are set against each other: a plateaued filing curve, a citation profile dominated by one record, and a technology mix that leaves pulp-conversion and waste-sorting claims comparatively open.
The growth phase is behind, not ahead
Filings climbed from zero in 2017 to 8 in 2020 and had eased to 5 by 2022. Even accounting for the roughly 18-month publication lag that understates the newest years, this is a plateau rather than an emerging wave, which changes how a freedom-to-operate search should be scoped.
Influence sits in one filing, not a cluster
US20240092991A1 is cited 20 times against a next-highest of 3. That gap is unusually wide and means competitive monitoring should treat this single family as a reference point for the field's modular-system approach rather than assume influence is spread across several strong filings.
Fibre formation is the crowded claim space
Half the corpus sits in polymer processing (C08J) and half in fibre/filament features (D01F), with man-made filament spinning (D01D) close behind at 9. Pulp-related classes and solid waste disposal (B09B) trail at 3-5 records each, indicating dense claim coverage on turning recycled polymer into spinnable fibre, and thinner coverage upstream and downstream of that step.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to recycled textile fiber advanced materials, with the prior art for and against each one.
| Assignee | Co-assignee | Shared families |
|---|---|---|
| LM Wind Power | VOGEL RYAN ERIC | 1 |
| LM Wind Power | SAJOUS RAPHAEL | 1 |
| LM Wind Power | HAYDEN PAUL | 1 |
| LM Wind Power | DAI HUIJUAN | 1 |
| LM Wind Power | CAMPO FRITZ ANDRES | 1 |
| VOGEL RYAN ERIC | SAJOUS RAPHAEL | 1 |
| VOGEL RYAN ERIC | HAYDEN PAUL | 1 |
| VOGEL RYAN ERIC | DAI HUIJUAN | 1 |
Ten co-assignee pairs appear in the dataset, with the strongest links running through LM Wind Power paired separately with three individual inventors — a pattern of single-inventor collaboration rather than multi-corporate joint filing.
Who is filing, and where the gaps sit
The assignee list is short — 20 families in total — and recent-year momentum has gone quiet across the board, with none of the tracked assignees showing filings in the latest year. That combination of a small applicant pool and stalled recent activity is itself a signal for where to look next.
List Technology AG
Holds the representative solvent-method spinning-solution filing in this dataset, covering multi-evaporator dope preparation for cellulose recycling. No filings recorded in the latest tracked year.
Stora Enso Oyj
Appears among the tracked assignees with pulp- and fibre-adjacent filings, consistent with a paper and packaging group extending into fibre recycling claims. No activity in the latest tracked year.
LM Wind Power
Sits at the centre of the strongest co-assignee links in the dataset, each pairing with a different individual inventor (Vogel Ryan Eric, Sajous Raphael, Hayden Paul), suggesting inventor-led filings rather than joint-venture activity.
| Assignee | Recent year | YoY |
|---|---|---|
| List Technology AG | 0 | — |
| Stora Enso Oyj | 0 | — |
| LM Wind Power | 0 | — |
| LEE ELIZABETH A K | 0 | — |
| VOGEL RYAN ERIC | 0 | — |
| SAJOUS RAPHAEL | 0 | — |
| REGENERATED TEXTILE IND LLC | 0 | — |
| HAYDEN PAUL | 0 | — |
Where to take this
The dataset points to two practical next steps: narrow a freedom-to-operate check around the fibre-formation core, and probe the thinner pulp- and waste-handling classes for open claim space before they fill in.
Run a claims-level check on the fibre-formation core
With C08J and D01F each carrying half the corpus, a targeted claim chart against the most-cited filing is the fastest way to see what freedom to operate actually looks like in spinning-solution and filament-formation claims.
Explore in Patsnap EurekaTest the pulp-conversion and waste-sorting gap
D21B, D21C, D21H and B09B each sit well below the fibre-formation classes. That gap may reflect a genuine technical opening or simply that filers have not yet reached that stage of the process — worth a closer look before committing R&D budget.
Explore in Patsnap EurekaCommon questions on this landscape
The tracked dataset contains 20 patent families published between 2015 and the 2026 data cut-off. Because patent publication typically lags filing by around 18 months, the true number of filings in the most recent one to two years is understated in any count taken today. Families, rather than raw document counts, are the more reliable unit here because they neutralise duplicate filings across jurisdictions for the same invention.
Filing activity peaked in 2020 at 8 filings and had already eased to 5 by the 2022 midpoint, which is a plateau rather than sustained growth. Even allowing for the publication lag that understates the newest years, the shape of the curve does not show acceleration. This matters for R&D planning: a flat filing curve in a still-growing commercial market can indicate either that core approaches are settled, or that filers are waiting to see which processing routes win before committing claims.
C08J (polymer processing and solutions) and D01F (chemical filament and fibre features) each account for 10 of the 20 records, with D01D (man-made filament spinning) close behind at 9. That means the densest claim coverage sits around converting recycled polymer into a spinnable dope and forming it into filament. Pulp-related classes and solid waste disposal trail at 3-5 records each, so upstream sorting and pulp conversion carry comparatively lighter claim density.
The assignee pool in this dataset is small, spanning 20 families with no single company holding an outsized share visible in the evidence. List Technology AG holds a representative solvent-method spinning-solution filing, Stora Enso Oyj appears with pulp-adjacent filings, and LM Wind Power shows the strongest co-assignee links, each paired with a different individual inventor. None of the tracked assignees show filings in the latest year, which is consistent with the broader plateau in the filing trend.
The IPC distribution suggests the thinner branches sit in pulp-to-dope conversion (D21B/D21C), paper-pulp composition reuse (D21H), solid-waste sorting pre-treatment (B09B), and plastics feedstock preparation (B29B), all of which trail the fibre-formation core of C08J and D01F. Blend-separation claims for mixed-fibre textile streams also appear thin relative to single-polymer recycling routes. A claim drafted around pre-treatment or sorting stages, rather than the spinning-solution step itself, is more likely to find open space, though this should be confirmed with a targeted novelty 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.