Road Roller and Intelligent Compaction Patents: Who Leads 2026
- Concentrated at the top. the five most active filers together hold 56.9% of all 58 records in scope, and the top ten hold 79.3% — this is a field with a short list of entrenched claimants.
- Flat, not falling, filing. 2021 and 2024 both sit at 5 filings for the leading rate — read the 2025-2026 dip as publication lag, not declining interest, since publication trails filing by roughly 18 months.
- Positioning and imaging are catching up to earthmoving. G01S positioning classes appear on 24.1% of records and G01C/G06T each on 15.5%, alongside the traditional E01C/E02F civil-works classes — sensing is now co-claimed with the mechanical base.
Filing growth compares 2021 (5 records) with 2024 (5) — 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 58 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This landscape tracks 58 published records at the intersection of vibratory and oscillatory road rollers and the sensing and feedback systems used to measure and control compaction in real time — compaction meter value tracking, pass-count mapping, vibration amplitude control, soil stiffness feedback and satellite-based positioning of the drum. The scope spans 2015 through the 2026-07-31 data cut-off, capturing both the mechanical compactor art and the software/sensor layer now filed alongside it.
Filing is uneven across the window, with a peak in 2019 and a flat multi-year run since — a pattern more consistent with a maturing, incrementally-claimed field than a fast-growing one. Assignee concentration is high enough that a freedom-to-operate review should start with the ranked leaders rather than a broad art search.
Filing trends and technology composition
Figures below use the same denominators throughout: shares of filing trend are read against the annual counts, and every IPC share is read against all 58 records in scope. Because a single record can carry more than one IPC class, the class shares sum to well over 100%.
Filing trend: a 2019 peak, then a plateau
Filings rose from nothing in 2017 to a peak of 14 in 2019, then settled into a lower, flatter pattern; the leading-rate comparison of 2021 (5) against 2024 (5) shows 0% growth over that span. Treat 2025 and 2026 as still filling in rather than as a real slowdown, since publication lags filing by roughly 18 months.
Technology composition: civil works plus a sensing layer
E01C (roads and pavements) and E02F (excavating and earth moving) remain the largest classes at 37.9% and 29.3% of records respectively, but G01S positioning and radar appears on 24.1%, and G01C navigation and G06T image processing each reach 15.5% — evidence that satellite positioning and imaging feedback are now routinely co-claimed with the mechanical compactor rather than filed separately.
Shares are the percentage of the 58 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Road Roller and Intelligent Compaction with Eureka
This page is one run against one query. Ask Eureka your own question about road roller and intelligent compaction and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited records in this landscape
Oscillatory Compaction Method — US20120155961A1
A method for compacting granular material surfaces using wheeled compaction equipment — pneumatic-tire, drum-type and asphalt compactors. A controller sends a first, substantially constant propel command, then a second, varying propel command that speeds up or slows the equipment, causing the compaction speed to oscillate and improving the compaction process.Filed by Caterpillar Paving Products Inc.; one of the most-cited records in this landscape at 15 citations.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | CN114674366A | 一种道路压实质量实时监控反馈系统 | 18 |
| 2 | WO2025080321A1 | Systems and methods for industrial operations | 17 |
| 3 | CN109898391A | 基于无人驾驶及信息化检测技术的路基智能压实系统 | 16 |
| 4 | US20120155961A1 | Oscillatory Compaction Method | 15 |
| 5 | CN114134784A | 基于振动轮实际振幅的路基压实质量连续检测系统与方法 | 12 |
| 6 | CN205581306U | 一种用于记录压路机碾压轨迹的数据采集设备 | 11 |
| 7 | US8439598B2 | Oscillatory compaction method | 11 |
| 8 | CN109443360A | 一种基于多边形的车辆行驶轨迹生成及拼接算法 | 9 |
| 9 | US20210364654A1 | GNSS/IMU surveying and mapping system and method | 8 |
| 10 | US20230003893A1 | Method and apparatus for detecting operating terrain, and engineering equipment for detecting operating terra… | 7 |
Ranked by citation count within this searched corpus. Older records accumulate more citations by virtue of age, so treat this as a signal of influence rather than of current technical 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.
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Three patterns stand out once concentration, trend and class composition are read together.
A short list of entrenched claimants
The five most active filers hold 56.9% of all 58 records in scope, and the top ten hold 79.3%. A field this concentrated rewards designing around specific claim families over broad novelty searching, since most of the occupied claim space belongs to a small group.
Plateau, not decline
Filing peaked in 2019 at 14 and has since flattened; the 2021-to-2024 comparison shows 0% growth at the leading rate. The apparent drop in 2025-2026 reflects publication lag rather than falling interest, so it should not be read as the field cooling.
Sensing is now co-claimed with the mechanical base
E01C and E02F remain the largest classes, but positioning (G01S), navigation (G01C) and image processing (G06T) each appear on a meaningful share of records. New filings increasingly pair drum mechanics with a positioning or vision-based feedback claim rather than filing either alone.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to road roller and intelligent compaction, with the prior art for and against each one.
Who is filing, and where the gaps sit
The ranked leaders span construction-equipment OEMs, Chinese railway research institutes and at least one internet/technology entrant, reflecting how compaction quality control has become a software and sensor problem as much as a mechanical one.
A construction-equipment incumbent sets the pace
The leading assignee holds more than double the fifth-place count of 5, a gap wide enough that its claim family is worth mapping before filing anything adjacent to drum vibration control or oscillatory compaction.
Chinese railway institutes file jointly
The strongest co-assignee pair links a railway construction research institute with its parent railway science academy, filing together 5 times; two further pairs link the same institute with a specialised engineering affiliate and a national railway group.
Momentum has cooled across the board
Every assignee tracked for recent-year momentum, including the top filer and the internet-technology entrant, shows zero filings in the latest year — consistent with the publication-lag effect rather than an actual pullback from the space.
| Assignee | Recent year | YoY |
|---|---|---|
| Hitachi Construction Machinery Co., Ltd. | 0 | — |
| Beijing Baidu Netcom Science & Technology Co., Ltd. | 0 | — |
| Railway Construction Research Institute of China Academy of Railway Sciences Corporation Limited | 0 | — |
| China Academy of Railway Sciences Corporation Limited | 0 | — |
| Shanghai Huace Navigation Technology Co., Ltd. | 0 | — |
| Caterpillar Paving Products Inc. | 0 | — |
| Caterpillar Inc. | 0 | — |
| OCTAGON I O LTD | 0 | — |
Where to take this next
The dataset points to specific follow-up work rather than a general watch brief.
Map the leader's claim family
With the top assignee holding 12 of 58 records, a full claim chart of its drum-vibration and feedback patents should precede any new filing in that space.
Explore assignee claims in Eureka →Track the railway-institute cluster
The co-assignee pairs among Chinese railway research bodies suggest a coordinated filing program worth monitoring for new joint applications.
Set up assignee alerts in Eureka →Watch the sensing-layer classes
G01S, G01C and G06T shares suggest positioning and vision feedback are becoming standard co-claims; track new filings that pair these with E01C/E02F.
Build a class-based watch in Eureka →Common questions about this landscape
The ranked leader in this dataset holds 12 of the 58 records in scope, more than double the fifth-placed assignee's 5. The top five assignees combined hold 56.9% of all records, and the top ten hold 79.3%, so the field is concentrated among a small group of construction-equipment OEMs and Chinese railway research institutes. Anyone planning to file in this space should review the leader's claim family first, since it covers the largest share of occupied claim space.
Filing peaked in 2019 at 14 records and has since flattened, with the leading-rate comparison showing 0% growth between 2021 and 2024 (5 filings each year). The apparent decline in 2025 and 2026 is largely an artefact of publication lag, since publications trail filing by roughly 18 months, so those most recent years should not yet be read as a real slowdown. Overall the trend looks like a plateau rather than sustained growth or decline.
The dominant classes are E01C (roads and pavements, 37.9% of records) and E02F (excavating and earth moving, 29.3%), reflecting the mechanical compactor base. Positioning and sensing classes are also well represented: G01S (radar, sonar and positioning) appears on 24.1% of records, and G01C (navigation) and G06T (image processing) each appear on 15.5%. Because records often carry multiple classes, these shares add up to more than 100% of the 58 records in scope.
US20120155961A1, assigned to Caterpillar Paving Products Inc., claims an oscillatory compaction method where a controller issues a first, roughly constant propel command followed by a second, varying propel command that speeds up or slows the compactor, causing its compaction speed to oscillate. It is one of the most-cited records in this landscape at 15 citations, indicating it has shaped later filings on speed-varying compaction control. A new design that changes propel speed to alter compaction outcomes should be checked against this claim specifically, though systems based on amplitude or frequency control rather than propel-speed oscillation may sit outside its scope.
Material analysis and testing (G01N) and foundation-specific compaction (E02D) each appear on under 7% of the 58 records in scope, well below the core E01C and E02F classes, suggesting these branches are comparatively under-claimed. Pass-count mapping overlays and compaction meter value calibration also appear less frequently than the core mechanical and positioning claims. A first claim in these areas would likely combine an existing sensing or positioning method with a specific calibration or material-feedback step not yet covered by the dominant assignees' claim families.
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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.