Slipform Paving Patents: Who Leads, Where the Gaps Are 2026
- 58.1% concentration. The top 5 assignees hold 25 of the 43 records in scope — a field where a handful of paver and materials-testing filers occupy most of the claim space.
- Filing has cooled since 2021. From 4 filings in 2021 to 1 in 2024, a -75% move over the most recent complete three-year span — publication lag means 2025-26 figures will still fill in.
- Digital control is now a real branch. G06F (digital data processing) appears in 18.6% of the 43 records, alongside G01N materials testing at the same share — stringless guidance and quality-control claims sit outside the core E01C mechanical class.
Filing growth compares 2021 (4 records) with 2024 (1) — 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 43 records in scope (CR5), not by the ranked leaders only.
What This Landscape Covers
Slipform paving equipment extrudes and consolidates concrete without fixed side forms, using a moving mould, internal vibrators and a trailing finishing pan to hold pavement geometry within a target smoothness index. This landscape tracks patent activity across the paving train itself — slipform pavers, dowel bar inserters, texturing and joint-sawing equipment — plus the guidance and quality-control layers that increasingly sit alongside the mechanical claims: stringless guidance, edge-slump control, and maturity-based concrete quality testing.
The scope draws on 43 published records spanning United States, Chinese, Indian, Canadian, European and South Korean filings, with receiving-office activity concentrated in the United States. Publication naturally lags filing by roughly 18 months, so the most recent one to two years in any trend understate real filing activity.
Filing Trend and Technology Composition
Two views of the same 43 records: how filing activity has moved year over year, and which IPC subclasses the claims actually sit in.
Filing trend: a 2018 peak, then a cooling cycle
Activity peaked at 6 records in 2018. The most recent complete comparison — 4 filings in 2021 against 1 in 2024 — shows a -75% move over that span; treat 2025 and 2026 figures as still filling in rather than as evidence of a continued decline.
IPC composition: roads dominate, but not alone
E01C (roads and pavements) appears in 67.4% of the 43 records, as expected for a paving-equipment corpus. G01N materials testing and G06F digital data processing each reach 18.6%, and C04B cement/ceramics reaches 11.6% — together indicating that quality control and control-software claims are now filed alongside, not instead of, the core mechanical hardware. Because records can carry multiple classes, these shares add to more than 100% of the 43-record total.
Shares are the percentage of the 43 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Slipform Paving and Concrete Roads with Eureka
This page is one run against one query. Ask Eureka your own question about slipform paving and concrete roads and every answer comes back with the patent numbers behind it.
Try EurekaMost-Cited Records in the Corpus
US4318631A — Texturing Broom Apparatus for Roadway Pavements
A texturing broom apparatus for surface grooving freshly laid uncured concrete pavement, using a traveling horizontal endless conveyor belt carrying a texturing broom of spring-steel tines pivotally mounted for movement in the direction of belt travel. Spring means bias the broom to a limiting idle position as it grooves the pavement surface transversely, producing the skid-resistant texture pattern used on finished concrete roads.Filed by Vickers, Richard R.; cited 54 times in the corpus, making it one of the most-referenced surface-texturing records in scope.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US9963836B1 | Method for operating paving train machines | 100 |
| 2 | US20080221815A1 | Method and System for Concrete Quality Control Based on the Concrete's Maturity | 57 |
| 3 | US3801211A | Pavement grooving process and apparatus | 57 |
| 4 | US4318631A | Texturing broom apparatus for roadway pavements | 54 |
| 5 | US20160115654A1 | Adjustable Width Trail Paver | 45 |
| 6 | US20070179653A1 | Method and system for concrete quality control based on the concrete's maturity | 43 |
| 7 | US8032244B2 | Method and system for concrete quality control based on the concrete's maturity | 34 |
| 8 | US7398131B2 | Method and system for concrete quality control based on the concrete's maturity | 34 |
| 9 | US20180204478A1 | Driver Education System And Method For Training In Simulated Road Emeregencies | 18 |
| 10 | US20040083057A1 | Method and system for concrete quality control based on the concrete's maturity | 17 |
Citation counts inside a searched corpus favour older filings that have had more time to accumulate citations — read these as markers of influence on later filings, not as a signal of current commercial relevance.
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The composition and concentration figures point to a field where the mechanical core is well occupied and the digital and materials-testing layers are the more active edges.
A short leader group, then a long tail
The top 5 assignees hold 25 of the 43 records in scope, and the top 10 extend that to 35, or 81.4%. That leaves a genuine long tail below tenth place — single-filing entrants working narrow mechanical or control claims rather than broad paver platforms.
Cooling from a 2018 peak
Filing activity peaked at 6 records in 2018 and has since eased, with the most recent complete comparison point showing a drop from 4 filings in 2021 to 1 in 2024. Given the roughly 18-month publication lag, 2025 and 2026 counts should not yet be read as continuation of that decline.
Quality control and software are co-filed, not separate
Materials-testing claims (G01N) and digital-data-processing claims (G06F) each appear in 18.6% of the 43 records, roughly matching each other and sitting well below the 67.4% core E01C share. That pattern fits a field adding stringless guidance and maturity-based quality control onto existing mechanical paving platforms rather than replacing them.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to slipform paving and concrete roads, with the prior art for and against each one.
Who Is Filing, and Where the Gaps Sit
24 companies make up the ranked assignee list for this 43-record dataset, with activity concentrated among paver-equipment manufacturers and a scattering of government and university filers around materials testing.
One clear leader in equipment claims
The top-ranked assignee holds 12 of the 43 records, well ahead of fifth place at 2 and tenth place also at 2 — a steep drop-off that signals most of the ranked list files only once or twice in this scope.
A flat tail below tenth place
Once past the top 10 (35 of 43 records, 81.4%), remaining assignees hold single filings apiece — often universities, government research bodies or individual inventors working narrow instrumentation or testing claims rather than full paving trains.
Government-university pairings on materials work
Co-filing is rare in this corpus — only 3 pairs recur, and the strongest links pair a government-owned power utility with research-council and university partners on concrete quality and testing claims, alongside one pairing of individual inventors.
| Assignee | Recent year | YoY |
|---|---|---|
| GOMACO | 0 | — |
| NTPC LTD A GOVERNMENT OF INDIA CO | 0 | — |
| Wirtgen GmbH | 0 | — |
| Normadics Inc. | 0 | — |
| Council of Scientific and Industrial Research (CSIR) | 0 | — |
| WEAVER SEAN SOMERS | 0 | — |
| TROST STEVEN M | 0 | — |
| THE REGISTRAR ANNAMALAI UNIV | 0 | — |
Where to Take This Analysis
The figures above establish concentration and composition; the next step is usually claim-level comparison against a specific design or filing plan.
Run a freedom-to-operate check on a specific mechanism
Concentration at the top 5 and top 10 means a new equipment claim is likely to sit close to existing filings from the leading assignees. A claim-by-claim comparison against the most-cited records is the fastest way to find out where a design actually differs.
Compare claims in Eureka →Track the digital-guidance and quality-control branches
G06F and G01N claims are growing relative to the mechanical core and are less concentrated among the top filers. Watching new entrants here, rather than the established paver-equipment leaders, is likely to surface earlier signals of where the field moves next.
Set up monitoring in Eureka →Common Questions About This Landscape
It is moderately concentrated: the top 5 assignees hold 25 of the 43 records in scope, or 58.1%, and the top 10 extend that to 35 records, or 81.4%. That leaves a long tail of single-filing entrants below tenth place, including universities and government research bodies working narrower testing or instrumentation claims. A newcomer should expect the core mechanical paving-train claims to be more crowded than the quality-control or digital-guidance layers.
Filing peaked at 6 records in 2018 and the most recent complete comparison shows a decline from 4 filings in 2021 to 1 in 2024, a -75% move over that span. However, patent publication typically lags filing by around 18 months, so 2025 and 2026 figures in any dataset are still filling in and should not be read as confirmation of a continuing downward trend. A fair read is that the field has cooled from its 2018 peak but the most recent two years remain incomplete data.
The core is E01C, roads and pavements, appearing in 67.4% of the 43 records in scope, covering the paver, dowel bar inserter, texturing and joint-sawing hardware itself. Alongside that, G01N materials testing and G06F digital data processing each appear in 18.6% of records, reflecting concrete-maturity quality control and stringless guidance systems layered onto the mechanical platform. C04B cement and ceramics claims appear in 11.6%, generally tied to mix or surface-treatment formulations rather than the machinery.
The most-cited record in this dataset is a method for operating paving-train machines, cited 100 times, followed by records on concrete quality control based on maturity, pavement grooving, and texturing broom apparatus, each cited in the 50s. High citation counts favour older filings that have simply had more time to accumulate references, so these should be read as markers of foundational influence rather than as an indicator that the underlying technology is still the most commercially active.
The under-claimed branches sit outside the dominant E01C mechanical core: real-time edge-slump sensing, stringless GPS-based slipform steering, concrete-maturity-triggered joint-sawing timing, and texturing-pattern optimisation for skid resistance all show up as smaller IPC shares (G01N, G06F, G06T) relative to the 67.4% E01C share. These branches also show sparser co-assignee activity, with only 3 recurring pairs in the whole corpus, suggesting less joint development and more room for a first-mover claim structured around sensor-driven control rather than pure mechanical design.
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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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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.