The historical core of UHPC patenting is a cluster of cement and construction-chemical firms with strong co-filing ties, sharing joint filings in the double digits with each other. Alongside them is a growing long tail of Chinese universities, municipal construction firms and materials-science companies that individually file only a handful of families each. Notably, every one of these named assignees shows zero filings in the most recent tracked year, so current market-leadership questions require checking filings that have not yet published rather than relying on this historical ranking alone.

China accounts for the large majority of tracked receiving-office activity, with 155 filings compared to 38 in the United States and 14 in South Korea. Smaller volumes appear at the Indian, Canadian and European patent offices. Any competitive or freedom-to-operate search on UHPC formulation should treat China as the primary jurisdiction rather than a secondary check.

Every record in this dataset touches C04B, the cement, ceramics and refractories subclass, confirming that core mix-design and formulation chemistry is the centre of gravity. Secondary clusters cover shaping equipment for cement products, structural building components, building finishing, bridges, mixing equipment and tunnel support — each with far lower filing counts than the core chemistry. That imbalance suggests application-specific engineering claims, such as UHPC used in tunnel linings or bridge decks, are comparatively less crowded than the base material claims.

Filings grew from 7 in 2017 to a peak of 33 in 2025, but the 2022 midpoint of 19 sits below what a steady climb to that peak would predict, indicating the growth phase had already flattened mid-period. Because patent publication typically lags filing by around 18 months, the most recent year's figures are understated and should not be read as a real decline yet. A clearer picture will only be visible once 2025-2026 filings finish publishing.

That filing, from Integrated Composite Construction Systems, LLC and published in February 2024, claims a specific sequenced mixing process for steel-microfiber-reinforced UHPC using recycled glass powder as a fine dry constituent. The process specifics — the order in which dry aggregate, cement, glass powder, silica fume, silica flour, cenospheres, water, admixtures and steel microfibers are combined — are the operative technical elements, not the general idea of using recycled glass in UHPC. Developers working with recycled glass powder in UHPC formulations should compare their own mixing sequence against this claim rather than assuming the material substitution alone is blocked.