Self-Compacting Concrete Patents: Who Leads, Where the Gaps Are 2026
- Filings quadrupled from 2021 to 2024, rising from 1 to 5 records a year as passing-ability and segregation-resistance testing methods moved into claims.
- Filing is fragmented across 39 ranked assignees, with the leader holding only 4 records and a long tail of single- and double-filing academic and individual applicants.
- 81.0% of the 21 records in scope sit in C04B (cement and concrete formulations), while measurement and testing apparatus (G01N) appears in under a quarter, leaving workability instrumentation comparatively open.
Filing growth compares 2021 (1 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.
What this landscape covers
This review tracks patent filings at the intersection of viscosity modifying admixtures and self-compacting concrete (SCC), focused on the technical criteria that separate a workable SCC mix from a failed one: segregation resistance, passing ability, rheology measurement, robustness to water content variation, formwork pressure and surface finish. The scope is narrow by design — it captures records that address these performance criteria directly in their title, claims or abstract, rather than the much larger and noisier set of general concrete-admixture filings.
The 21 records in scope span filings from 2015 through the 2026 data cut-off, with almost all activity concentrated in India's receiving office and a single record from China. Because publication lags filing by roughly 18 months, the 2025 and 2026 figures in any trend understate actual filing activity for those years.
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Filing trends and technology composition
Two views of the same 21-record dataset: how filing volume has moved year over year, and which IPC subclasses the claims actually sit in.
Filing trend: a small field accelerating from a low base
Annual filings moved from 0 in 2017 to a peak of 5 in 2023, with 2021 to 2024 showing a documented +400% rise (1 to 5 records). 2026 is a partial year at 2 records so far and should not be read as a slowdown.
Technology composition: concrete formulation dominates, testing apparatus trails
C04B (ceramics, cement and refractories) covers 81.0% of the 21 records, confirming that most claims are written around mix formulation rather than measurement. G01N (material analysis and testing) appears in 23.8% and E04C (structural building components) in 14.3%; the remaining classes — spanning medicinal preparations, food processing and nanotechnology — each cover a single record and mostly reflect incidental co-classification rather than a real sub-field.
Shares are the percentage of the 21 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Viscosity Modifying and Self-Compacting Concrete with Eureka
This page is one run against one query. Ask Eureka your own question about viscosity modifying and self-compacting concrete and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative filing and most-cited records
Apparatus to determine workability of self-compacting concrete (SCC) and method thereof
The filing describes a bench apparatus combining a slump-cone table, a trapezium box with a sliding plate, and a V-funnel with a trap door into a single rig. The design lets one operator step through filling ability, passing ability and segregation resistance measurements on the same SCC sample without transferring it between separate standard tests.Filed by Sharda University, 2024-05-03.
View full record| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | CN104829178A | C30级掺钢渣再生骨料自密实混凝土及其制备方法 | 24 |
| 2 | IN202241041685A | Design and development of light weight self compacting concrete mixture and their impact on strength of build… | 4 |
| 3 | IN201641043353A | Basalt fibre reinforced self compacting concrete structures | 2 |
Citation counts favour older records still surfacing in later searches; treat them as a signal of influence within this corpus, not as a ranking 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. 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 a filing decision
Three findings from the dataset that matter more than the raw counts on their own.
Growth is real but starts from a very small base
The rise from 1 filing in 2021 to 5 in 2024 is a genuine acceleration, not noise, but it is measured off a field with only 21 total records in scope. A handful of additional filings from any one applicant would shift the shape of the trend materially.
No single assignee has built a defensive wall
The leading assignee holds 4 of the 21 records in scope, and by the tenth-ranked position that drops to 2. With 39 ranked assignees behind a leader this small, freedom-to-operate risk from any one player is limited — but so is the value of trying to license around them.
Formulation claims crowd out apparatus claims
Cement and concrete formulation (C04B) appears in 81.0% of the 21 records, while material testing (G01N) appears in only 23.8%. Structural components (E04C) trail further at 14.3%. Claims describing how to measure or apparatus to test SCC workability are comparatively thin on the ground next to claims on what to mix.
Filing activity is overwhelmingly India-originated
Twenty of the 21 records in scope were filed through India's receiving office, with a single Chinese filing. Academic and institutional applicants dominate the India filings, which shapes both the claim style and the likely enforcement posture in this dataset.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to viscosity modifying and self-compacting concrete, with the prior art for and against each one.
Who is filing, and how the field clusters
The assignee base is long-tailed: academic institutions and individual inventors rather than concrete majors dominate the ranking, and several of the strongest links are between co-inventors rather than between competing firms.
The largest filer is still a small one
The leading assignee's 4 records set the ceiling for this field — there is no dominant incumbent to design around, but also no single licensing target that clears most of the space.
Filing clusters run through named inventor teams
The strongest co-assignee pairs in this dataset link individual inventors rather than institutions, appearing together on 4 records each. This points to small, repeat-filing teams rather than corporate R&D programmes as the field's most active source.
Academic institutions are driving the most recent activity
Karpagam College of Engineering, Karpagam Academy of Higher Education and inventor Selvakumar G each show 2 filings in the latest year, while several of the historical leading inventor teams show none in that period. The field's active edge has shifted toward institutional filers.
| Assignee | Recent year | YoY |
|---|---|---|
| KARPAGAM COLLEGE OF ENG | 2 | — |
| KARPAGAM ACADEMY OF HIGHER EDUCATION | 2 | — |
| SELVAKUMAR G | 2 | — |
| WAGHE UDAYKUMAR PRAKASHCHANDRA | 0 | — |
| WAGH MONALI REWASHANKAR | 0 | — |
| NIKHADE HARSHAL RAMESH | 0 | — |
| NIKHADE ANSHUL RAMESH | 0 | — |
| SHARDA UNIVERSITY | 0 | — |
Where to take this next
The dataset points to specific next steps depending on whether the goal is freedom-to-operate, licensing, or new filing strategy.
Map claims against the workability-testing gap
With G01N apparatus claims covering under a quarter of records against C04B formulation claims covering the large majority, a freshly drafted testing-apparatus claim has more room to clear prior art than a new mix-formulation claim does.
Explore testing apparatus claims in EurekaWatch institutional filers, not the historical leader
Latest-year momentum has moved to academic institutions rather than the inventor teams that built the early lead, which changes who to monitor for freedom-to-operate purposes going forward.
Track assignee momentum in EurekaTreat citation counts as historical influence only
The most-cited record in this set dates from 2015; newer filings addressing the same segregation-resistance and passing-ability criteria have not yet accumulated citations simply because the corpus is young.
Review citation trends in EurekaFrequently asked questions
Self-compacting concrete (SCC) is the finished mix design, defined by performance properties such as passing ability and segregation resistance without vibration. Viscosity modifying admixtures (VMAs) are one class of ingredient used to achieve those properties, typically by controlling the mix's resistance to bleeding and segregation while it flows. In this dataset most claims cover the overall SCC formulation, with VMA-specific claims appearing as a component within those broader mix or apparatus claims rather than as a separate dominant category.
The ranking in this dataset covers 39 assignees, and it is a long tail rather than a concentrated field: the leading assignee holds 4 records, dropping to 2 by the tenth-ranked position. Filers are predominantly academic institutions and individual inventors rather than large concrete or admixture manufacturers, and the strongest co-filing links are between named inventor teams rather than between competing companies. This suggests the field is still open for a company willing to file with focus.
Filing activity grew sharply between 2021 and 2024, rising from 1 record to 5 records — a documented +400% increase over that span, with a peak year of 5 filings in 2023. Figures for 2025 and 2026 appear lower, but that reflects the roughly 18-month lag between filing and publication rather than an actual slowdown; those years are still filling in. Based on the 2021–2024 window, the trend through the last complete year is upward.
Measurement and testing apparatus (IPC class G01N) appears in only 23.8% of the 21 records in scope, well behind the 81.0% covering cement and concrete formulation (C04B). Structural component applications (E04C) sit even lower at 14.3%. This points to workability test rigs, formwork pressure sensing, and dosing-control systems as comparatively under-claimed relative to mix formulation itself, which is the most crowded part of the space.
Yes, but only marginally: of the 21 records in scope, 20 were filed through India's receiving office and 1 through China's. The single Chinese record is also the most-cited filing in the dataset, covering a steel-slag recycled aggregate SCC mix. Readers focused specifically on the Chinese market should treat this as too small a sample to draw conclusions and should search that jurisdiction separately.
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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.