Mechanical Recycling Patents: Who Leads, Where the Gaps Are 2026
- Concentrated at the top. The five most active filers account for 48.5% of all 270 records in scope, and the top ten reach 67.8% — a short list of assignees controls most of the documented claim space.
- Filings cooled sharply after the 2023 peak. Activity rose to 94 records in 2023 but 2021-to-2024 filings fell 62%, from 42 to 16 — though 2025-onward counts are still filling in given the ~18-month publication lag.
- Polymer processing dominates the IPC mix. C08J (polymer processing & solutions) appears on 47.8% of records, more than double the next-most-common class, meaning most claim activity sits on reprocessing chemistry rather than separation hardware.
Filing growth compares 2021 (42 records) with 2024 (16) — 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. Top-5 share is the combined record count of the five largest assignees divided by all 270 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This review covers 270 published records filed or published between 2015 and 2026 that combine mechanical recycling or mechanical reclamation language with technical markers such as contact stress, friction coefficient, fatigue crack, vibration mode, material separation and recovery yield. That combination isolates records where recycling claims are tied to a specific mechanical or physical mechanism, rather than general waste-management or chemical-only recycling filings.
The set spans reprocessing of plastics and composites, wear and fatigue behaviour of separation equipment, and yield-focused material recovery. Receiving-office data shows the heaviest filing at the EPO and in the United States, with WIPO PCT filings and a smaller but non-trivial presence in India, Canada and Australia, indicating this is an internationally contested field rather than one confined to a single jurisdiction.
Filing trend and technology composition
Two views of the same 270-record set: how filing activity moved year over year, and which IPC subclasses carry the claim density.
Filings rose to a 2023 peak, then fell
Annual counts climbed from a single filing in 2017 to a peak of 94 in 2023. The 2021-to-2024 span shows a 62% decline, from 42 down to 16 records — a real contraction, though the two most recent years are still under-counted because publication lags filing by roughly 18 months.
Polymer processing chemistry outweighs separation hardware
C08J (polymer processing & solutions) touches 47.8% of the 270 records, well ahead of C07D and B29B. Wet separation of solids (B03B), the subclass closest to physical/mechanical separation equipment, sits at 11.5% — a marker that pure hardware claims are a minority relative to reprocessing chemistry, even in a search built around mechanical-mechanism terms.
Shares are the percentage of the 270 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Mechanical Recycling Patent Landscape with Eureka
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Try EurekaThe most-cited prior art in this field
White polyester film and method for manufacturing the same (US20220243030A1)
The filing describes a white polyester film made by blending physically regenerated and chemically regenerated recycled polyester chips, each with different intrinsic viscosity, mixed with white regenerated chips according to a predetermined intrinsic viscosity target.Filed by Nan Ya Plastics Corporation, published 2022-08-04.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US5304576A | Waste tire disposal and recycling | 72 |
| 2 | US20070054106A1 | Method of recycling mixed streams of ewaste (weee) | 55 |
| 3 | US7902262B2 | Method of recycling mixed streams of ewaste (WEEE) | 54 |
| 4 | US20040094641A1 | Method and apparatus for the processing of used tires and other materials | 51 |
| 5 | US9650313B2 | Depolymerization of plastic materials | 35 |
| 6 | US20120108863A1 | Depolymerizatin of Plastic Materials | 31 |
| 7 | US20210308937A1 | Solid-state additive manufacturing methods for compounding conductive polymer compositions | 30 |
| 8 | WO2005123817A1 | A method of recycling mixed streams of ewaste (WEEE) | 30 |
| 9 | US20040159593A1 | Transportable plastics recovery system | 25 |
| 10 | US20150210611A1 | Depolymerization of Plastic Materials | 23 |
Citation counts favour older filings by construction — a highly cited 1990s tire-recycling patent is a signal of foundational influence, not of current commercial relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Three read-throughs from the concentration, trend and technology-composition figures above.
A short list of assignees hold most of the claim space
With the top five filers already covering 48.5% of all 270 records and the top ten reaching 67.8%, a new entrant is filing into a field where the densest claim territory is already staked. The long tail below tenth place is thin by comparison.
Activity has genuinely pulled back from its 2023 peak
The 2021-to-2024 drop from 42 to 16 records is a real contraction in a complete data window, not an artefact of publication lag. Several of the previously most active assignees show zero filings in the latest year.
Chemistry-adjacent reprocessing outweighs mechanical separation claims
Despite the search being anchored on mechanical terms like contact stress and vibration mode, C08J polymer-processing claims dominate at 47.8% of records while B03B wet-separation claims sit at just 11.5%, suggesting separation-equipment claims are comparatively less crowded.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to mechanical recycling patent landscape, with the prior art for and against each one.
Who is filing, and where the gaps sit
The ranked leaders cover 60 companies across polymer producers, equipment makers and recycling specialists. Momentum data shows several previously dominant filers with no activity in the latest year, opening room for new entrants in adjacent branches.
One filer sits well ahead of the rest
The leading assignee's 43 records compare to 14 at fifth place and 8 at tenth, a steep drop-off that marks this as a landscape with one dominant filer rather than a tightly bunched top tier.
Several top-10 filers have gone quiet
Assignees that built up meaningful portfolios earlier in the window, including Cap III, Polystyvert, Nan Ya Plastics, HSCC Sustainable Venturing and Borealis, show zero filings in the most recent year — a gap that either reflects strategic pause or a filing pipeline not yet published.
Co-filing is rare and concentrated in a couple of relationships
Only six co-assignee pairs appear across the dataset, and the strongest links repeat between a single corporate filer and named individual inventors, rather than joint filings between two companies — this is a field of solo filers more than joint ventures.
| Assignee | Recent year | YoY |
|---|---|---|
| Cap III | 0 | -100% |
| Polystyvert | 0 | — |
| Nan Ya Plastics Corporation | 0 | — |
| HSCC SUSTAINABLE VENTURING BV | 0 | — |
| Borealis AG | 0 | — |
| MBA Polymers, Inc. | 0 | — |
| Hoffmann Neopac AG | 0 | — |
| MELD Manufacturing Corporation | 0 | -100% |
Where to take this analysis
The dataset points to specific next steps for a team deciding where to file or where to watch.
Map the leader's claim boundaries
With one assignee holding 43 records against a fifth-place figure of 14, understanding exactly what that leader's core claims cover is the fastest way to find where a new filing would actually be novel.
Explore assignee claims in EurekaTrack the post-2023 pullback by assignee
The 2021-to-2024 drop of 62% is uneven across filers — some went to zero, others may be repositioning. Watching quarter-by-quarter publication as the lag clears will show which pattern applies.
Set up filing alerts in EurekaTest claim language in the under-claimed branches
Vibration-mode and contact-stress-specific separation equipment claims sit well below the polymer-processing density seen elsewhere in the set, suggesting room for a tightly scoped first filing.
Draft and search claims in EurekaCommon questions on mechanical recycling patents
One assignee leads the ranked field with 43 records, well ahead of the fifth-placed filer at 14 and the tenth-placed filer at 8. The top five assignees combined account for 48.5% of all 270 records in scope, and the top ten reach 67.8%, so filing activity is concentrated rather than evenly spread across the 60 companies in the ranking. Anyone assessing freedom to operate should start with the leader's portfolio before looking further down the list.
Filings peaked at 94 records in 2023 and then fell, with the 2021-to-2024 window showing a 62% drop from 42 to 16 records. That is a genuine contraction within a data window considered complete. However, 2025 and 2026 figures are still filling in because publication typically lags filing by around 18 months, so it would be premature to call the field dormant based on the most recent two years alone.
Polymer processing and solutions (IPC class C08J) appears on 47.8% of the 270 records, making it by far the most common classification, followed by heterocyclic compounds (C07D) at 26.7% and plastics preparation (B29B) at 21.9%. Classes tied more directly to physical separation equipment, such as wet separation of solids (B03B) at 11.5%, are comparatively less represented. Since records can carry multiple IPC classes, these shares overlap rather than summing to 100%.
The IPC composition data suggests separation-hardware branches such as vibration-mode-tuned equipment, fatigue-crack-resistant tooling and contact-stress-optimised sorting components carry lighter claim density than the dominant polymer-reprocessing cluster. Several previously active top-ten assignees also show zero filings in the latest recorded year, which may indicate strategic openings rather than saturated territory. Any white-space assessment should be paired with a fresh claims search, since a thin IPC count does not guarantee an actual gap in enforceable claims.
The most-cited record in this set is a tire disposal and recycling patent from the 1990s, followed by two related filings on recycling mixed e-waste streams and another on processing used tires. High citation counts in this list reflect age and foundational influence within the searched corpus rather than current commercial importance, since older patents accumulate citations simply by having been available longer. Recent, highly relevant filings may have low citation counts purely because they have not had time to be cited.
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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.