Concrete Recycling Patents: Top Companies & Filing Trends 2026
- 83.3% concentration. The top 5 assignees hold 35 of all 42 records in scope — a field with a narrow set of active filers rather than a broad crowd.
- Filings tripled in three years. Volume moved from 3 in 2021 to 9 in 2024, a +200% run before the count peaked at 13 in 2023.
- Chemistry now rivals mechanics. C01F and C07C compound classes each touch 45.2% of records — recycled-aggregate and alkaline-earth chemistry claims now sit alongside jaw-crusher mechanics, not behind them.
Filing growth compares 2021 (3 records) with 2024 (9) — 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 42 records in scope (CR5), not by the ranked leaders only.
A mechanical field being pulled toward chemistry
Concrete recycling and crusher attachment patents originally clustered around jaw geometry, hydraulic actuation and quick-coupler mechanisms for excavator-mounted crushing buckets. The scope now searched here pulls in a second cluster entirely: compound recovery chemistry — separating hardened concrete waste into reusable cement fractions, controlling recycled aggregate quality, and processing the alkaline-earth and carboxylic-acid intermediates that show up when concrete waste is treated as a feedstock rather than debris. The two clusters do not compete for the same claim space, but they increasingly appear in the same filing families.
With only 42 published records in scope, this is a compact field rather than a crowded one. That makes concentration at the top more informative than it would be in a larger corpus: a handful of assignees account for nearly all activity, and the mechanical patents that anchor the most-cited table are older than the chemistry filings now driving volume.
Filing trend and technology composition
Filings were negligible before 2021, rose through a 2023 peak, and the most recent one to two years are undercounted because publication lags filing by roughly 18 months.
Filing trend, 2015-2026
Volume moved from 3 records in 2021 to 9 in 2024 (+200%), peaking at 13 in 2023; treat 2025-2026 as still filling in rather than a slowdown.
IPC subclass composition
C01F and C07C compound classes each cover 45.2% of the 42 records in scope, ahead of water treatment (C02F, 21.4%) and crushing/grinding hardware (B02C, 19.0%); records can carry more than one class, so shares sum past 100%.
Shares are the percentage of the 42 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Concrete Recycling and Crusher Attachments with Eureka
This page is one run against one query. Ask Eureka your own question about concrete recycling and crusher attachments and every answer comes back with the patent numbers behind it.
Try EurekaThe documents anchoring this landscape
Improved jaw crusher bucket (AU2008202666B2)
A jaw crusher bucket attaches to a front-end loader or excavator and combines toothed splitting elements with a stationary and a movable jaw. The stationary jaw carries concave crushing splines, the movable jaw carries convex splines, and a separate grinding stage pulverises the crushed output — mechanically staging rubble from large pieces down to graded aggregate in one attachment.Filed by Hydraulic Crusher Buckets Pty Ltd; granted 2012-07-12.
View full record| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20230081205A1 | Process for separating the components of hardened concrete waste for producing recycled cement | 9 |
| 2 | US20130320122A1 | Attachment with Interchangeable Jaw | 8 |
| 3 | US8800902B2 | Attachment with interchangeable jaw | 7 |
| 4 | WO2023225089A1 | Process for producing alkali hydroxide or alkaline earth oxide employing a weak acid intermediate | 4 |
| 5 | US20230382841A1 | Sodium Hydroxide Production with Carboxylic Acid and Sulfur Dioxide Intermediates | 4 |
| 6 | EP2672017A1 | Attachment with interchangeable jaw for a works machine | 4 |
| 7 | US20230391707A1 | Sodium Bicarbonate or Sodium Carbonate or Sodium Hydroxide or Calcium Oxide or Calcium Hydroxide or Calcium C… | 3 |
| 8 | US12030847B2 | Sodium bicarbonate or sodium carbonate or sodium hydroxide or calcium oxide or calcium hydroxide or calcium c… | 2 |
| 9 | US20230391706A1 | Calcium Oxide or Magnesium Oxide Production with Alkali and Sulfur Dioxide Intermediates | 2 |
| 10 | CN114100850A | 一种用于废旧混凝土回收再利用的磁选机 | 2 |
Citation counts favour older filings inside this searched corpus; read them as a signal of influence on later filers, not as a ranking of present-day 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.
Put your own technology through the same analysis
Eureka on the web
When you want the answer in the next five minutes.
The agent works the prompt against patents and technical literature, citing every source.
Run your analysis now →MCP server & REST API
When it has to run inside your own pipeline.
Patent search, landscape analysis and assignee resolution as MCP tools. Drop them into any agent framework, or call REST directly.
Browse MCP servers →What the numbers mean for a filing decision
Three patterns matter more than the raw counts: where volume concentrates, where it is still growing, and where the citation record shows lasting influence.
A narrow leading group, not a crowded field
Top 5 assignees combine for 35 of the 42 records in scope, and the top 10 account for all 42. A newcomer is not fighting hundreds of overlapping claims — they are negotiating around a small number of well-defined filing families.
Growth is real but recent years understate it
Filings rose from 3 in 2021 to 9 in 2024, with a peak of 13 in 2023. Because publication lags filing by roughly 18 months, 2025-2026 counts will rise as more applications publish — they should not be read as a plateau.
Compound recovery claims are now as common as crusher hardware
C01F (alkaline-earth/rare-earth compounds) and C07C (acyclic/carbocyclic compounds) each appear in 45.2% of the 42 records, ahead of B02C crushing hardware at 19.0%. Recycled-aggregate chemistry is no longer a side branch of this field — it is co-equal with the mechanical attachments that originally defined it.
The most-cited work points at concrete-waste chemistry, not attachments
The single most-cited record in scope addresses separating hardened concrete waste into recycled cement fractions, ahead of the jaw-attachment patents that follow it. That ordering signals where later filers have been building on prior art most heavily.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to concrete recycling and crusher attachments, with the prior art for and against each one.
Who is filing, and where the gate sits
Filing activity sits with a small set of assignees spanning individual inventors, academic institutes and equipment makers, with co-filing patterns pointing to a handful of research partnerships rather than a broad industrial base.
One assignee holds close to half of all filings
The leading assignee's 19 records dwarf the fifth-place count of 2, meaning most of the concentration in this field sits with a single filer rather than being spread evenly across the top group.
A Portuguese research cluster files jointly
The strongest co-assignee pairs link a higher-technical institute, a university and a polytechnic institute, each pairing appearing twice. That points to a specific academic research programme rather than a commercial joint venture.
Recent-year activity is quiet across the board
Every assignee tracked for recent-year momentum shows zero filings in the latest year, consistent with publication lag rather than an actual stop in R&D — recent applications from these filers are still working through to publication.
| Assignee | Recent year | YoY |
|---|---|---|
| Innovator Energy LLC | 0 | — |
| Ariel Sci Innovations Ltd | 0 | -100% |
| KO SEUNG HWAN | 0 | — |
| Instituto Superior Técnico (Higher Technical Institute) | 0 | — |
| University of Porto | 0 | — |
| INST POLITECNICO DE SETUBAL | 0 | — |
| HYDRAULIC CRUSHER BUCKETAB | 0 | — |
| Guizhou Huayi Building Materials Co., Ltd. | 0 | — |
Where to take this analysis
The published record gives a snapshot; the next steps depend on whether you are scoping freedom-to-operate, tracking a competitor, or looking for an open filing angle.
Check the leading assignee's full claim scope
With one assignee holding 19 of 42 records, understanding exactly what their granted claims cover — not just their filing count — is the first step before designing around them.
Explore assignee claims in Eureka →Track the chemistry-side filings separately
C01F and C07C classes now match crusher-hardware volume; treat recycled-aggregate chemistry as its own search rather than a subset of attachment mechanics.
Build a chemistry-focused watch list →Monitor the 2025-2026 publication backlog
Because of the roughly 18-month publication lag, filings made in 2025 will keep surfacing through 2026 and beyond — a static read of the trend chart today will understate current activity.
Set up a filing alert in Eureka →Common questions about this landscape
The assignee ranking in this dataset covers 17 companies, and it is heavily front-loaded: the leading assignee holds 19 of the 42 total records, while the top 5 combined account for 35 records, or 83.3% of everything in scope. By the tenth-ranked assignee the count drops to 1, and the top 10 together cover all 42 records. In practice this means a small number of filers — a mix of individual inventors, equipment specialists and an academic research cluster — define most of the active claim space, so competitive tracking should focus there rather than trying to monitor a long tail.
Filings grew substantially over the tracked period, rising from 3 in 2021 to 9 in 2024, a +200% increase, with a peak of 13 records in 2023. It would be a mistake to read the lower counts in 2025 and 2026 as a slowdown: patent publication typically lags filing by around 18 months, so the most recent one to two years in any trend chart are always undercounted until later publications catch up. The 2021-2024 window is the most reliable basis for judging momentum right now.
Two IPC subclasses tie for the largest share: C01F, covering alkaline-earth and rare-earth compounds, and C07C, covering acyclic and carbocyclic compounds, each appearing in 45.2% of the 42 records in scope. These sit ahead of C02F water and wastewater treatment (21.4%), and B02C crushing and grinding hardware (19.0%), which is closer to what many people expect a 'crusher attachment' patent search to return. Because a single record can carry multiple IPC classes, these shares add up to more than 100%, and the pattern shows recycled-aggregate chemistry claims now running alongside the mechanical attachment claims rather than behind them.
AU2008202666B2 claims a jaw crusher bucket for excavator or front-end-loader attachment that combines toothed splitting elements with a two-stage jaw arrangement — a stationary jaw with concave crushing splines and a movable jaw with convex splines — plus a separate grinding stage for pulverising output. Any new design using that specific spline geometry and staged crush-then-grind arrangement sits close to this claim and warrants a design-around check. It does not, on its own, block magnetic separation, dust suppression or quick-coupler mechanisms, since those are addressed by separate claim families elsewhere in this dataset.
Based on the technology composition data, dust suppression, quick-coupler wear-liner integration, magnetic separation of rebar fines, recycled-aggregate quality sensing, and wastewater treatment tied to concrete washout all show comparatively low record counts relative to the dominant compound-chemistry and jaw-mechanism classes. These are not empty categories, but they carry far less filing density than C01F, C07C or B02C, which suggests more room to stake a first claim without immediately overlapping the concentrated leaders. A freedom-to-operate search focused specifically on those sub-areas is a reasonable next step before committing to a filing strategy there.
Research Concrete Recycling and Crusher Attachments in depth with Eureka
Go past this page: query the whole concrete recycling and crusher attachments corpus yourself, in your own scope.
Every answer comes back with patent numbers you can open.
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.