Producing cementitious materials from inert fillers with fine pozzolanic particle coatings
US-2026092012-A1 · Apr 2, 2026 · US
Hydraulic lime cements; Roman cements {; natural cements}
Hydraulic lime cements; Roman cements {; natural cements} · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C04B7/34 |
| Official title | Hydraulic lime cements; Roman cements {; natural cements} |
| Display label | Hydraulic lime cements; Roman cements {; natural cements} |
| Total patents | 35 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 4 |
| 2019 | 1 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 4 |
| 2024 | 5 |
| 2025 | 6 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Binder compositions for the building industry including pozzolanic material and high volume filler
US-2026035301-A1 · Feb 5, 2026 · US
Negative-carbon cement (nc2) production
US-2025270137-A1 · Aug 28, 2025 · US
Coastal karst cement-based expanding grouting material and preparation method therefor
US-2025197279-A1 · Jun 19, 2025 · US
Low-carbon production method and system for cement clinker
US-2025197281-A1 · Jun 19, 2025 · US
Basaltic lava for producing green controlled low strength material (CLSM)
US-12275674-B2 · Apr 15, 2025 · US
Low Carbon Footprint Plaster Composition
US-2025074819-A1 · Mar 6, 2025 · US
Rapid setting, water durable binder composition
US-2025019307-A1 · Jan 16, 2025 · US
Compositions and methods relating to increased carbon dioxide uptake in mixing and curing of concrete
US-2024308904-A1 · Sep 19, 2024 · US
In-situ high-strength gradient carbonized material and preparation method thereof
US-2024262744-A1 · Aug 8, 2024 · US
Low carbon concrete composition and a method to produce a low carbon concrete composition
US-2024116815-A1 · Apr 11, 2024 · US
Asymmetrical Laminate Panel and Method of Manufacture
US-2024025149-A1 · Jan 25, 2024 · US
Basaltic lava for producing green controlled low strength material (clsm)
US-2024010556-A1 · Jan 11, 2024 · US
Synthetic silica glass in non-portland cements
US-2023406765-A1 · Dec 21, 2023 · US
Composite mixture and system for aquatic construction and environmental protection and methods of use
US-2023286858-A1 · Sep 14, 2023 · US
Cement admixture and cement composition
US-2023202921-A1 · Jun 29, 2023 · US
Asymmetrical laminate panel and method of manufacture
US-11602919-B2 · Mar 14, 2023 · US
Method of preparing nano-thin film of cement hydration product
US-11254612-B2 · Feb 22, 2022 · US
Method of preparing nano-thin film of cement hydration product
US-2021122674-A1 · Apr 29, 2021 · US
Asymmetrical Laminate Panel and Method of Manufacture
US-2020247091-A1 · Aug 6, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B7/34?
- CPC C04B7/34 is the Cooperative Patent Classification code for “Hydraulic lime cements; Roman cements {; natural cements}.”
- How many patents are filed under CPC C04B7/34 (Hydraulic lime cements; Roman cements {; natural cements})?
- Our database includes 35 publications tagged with this CPC code.
- Is patent activity under CPC C04B7/34 growing?
- Publication counts under this code: 5 in 2024 vs 6 in 2025 (latest complete years).