Shotcrete Accelerator Patents: Top Companies & Filing Trends 2026
Set accelerating admixture patents for shotcrete: who holds the claims and where the gaps sit
73.4% concentration. The top five assignees alone account for 168 of the 229 records in scope — this is a field dominated at the top, not a fragmented one. Filings peaked in 2017 at 18 records, then settled into a lower but rebuilding pattern — 2021's 5 records grew to 10 by 2024, a +100% increase over that span. Treat 2025 and 2026 figures as provisional given publication lag.
- 1CONSTRUCTION RESEARCH & TECHNOLOGY GMBH85
- 2GCP APPLIED TECHNOLOGIES INC27
- 3SIKA TECH AG25
- 4WR GRACE & CO CONN18
- 5SUBLIME SYSTEMS INC13
See the full set accelerating admixtures for shotcrete analysis in Eureka
- The complete ranking, not just the top five
- Every IPC branch with its share of the corpus
- The most-cited records, and where claim space is still thin
Common questions on shotcrete accelerator patents
Who holds the most patents on shotcrete set accelerators?
One assignee leads the ranking with 85 of the 229 records in scope, well ahead of the rest of the field — the fifth-placed company holds 13. The top five assignees combined account for 73.4% of all records, so the field is concentrated rather than fragmented. Any competitive or freedom-to-operate analysis should start with this leading group before looking at the long tail of 48 ranked companies.
What chemistry dominates alkali-free shotcrete accelerator patents?
Aluminium sulfate and related aluminate chemistries recur across the highest-cited records, and the IPC data confirms cement and refractory chemistry (C04B) covers 93.9% of the 229 records in scope. Secondary classes like coating processes and polymer additives each sit around 5%, showing they are layered onto core binder chemistry rather than being separate lines of invention. A representative filing, WO2017001413A1, centres on jurbanite and hydronium alunite based solids as an alkali-free route.
Is shotcrete accelerator patent filing activity growing or slowing?
Filing volume peaked in 2017 at 18 records and has not returned to that level, but the more recent, complete-year data shows real rebuilding: 2021’s 5 records grew to 10 by 2024, a +100% increase. Data for 2025 and 2026 will look artificially low because publication typically lags filing by around 18 months. Read the trend as reaccelerating off a lower base rather than declining.
Disclaimer. This analysis is based on Patsnap Eureka data drawn from a limited snapshot of global patent records and is provided for general information and reference only. Patent data carries inherent limitations — recent filings are under-counted because of publication lag, counts may be on a record or family basis, classification and applicant-name data may contain errors or duplicates, and the underlying search query defines the scope shown — so the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing here is an exhaustive prior-art, novelty, freedom-to-operate or validity search, nor does it constitute legal, financial or professional advice, and it should not be relied upon as such. Verify independently and review with qualified patent and legal professionals before acting on it.
Method: Filing trend and technology composition. Derived from a Patsnap search on Set Accelerating Admixtures for Shotcrete covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish. Every share divides by all records in scope. Data: Patsnap Eureka. See the full landscape report.