Cement additive composition comprising polycarboxylic acid-based copolymer
US-11427509-B2 · Aug 30, 2022 · US
Air-entrainers
Air-entrainers · 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 | C04B2103/304 |
| Official title | {Air-entrainers} |
| Display label | Air-entrainers |
| Total patents | 77 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 6 |
| 2017 | 12 |
| 2018 | 8 |
| 2019 | 10 |
| 2020 | 9 |
| 2021 | 11 |
| 2022 | 2 |
| 2023 | 7 |
| 2024 | 6 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
High-strength concrete-like fluorogypsum-based blends and production method
US-11384019-B2 · Jul 12, 2022 · US
Method for batch casting high-fluidity high-performance concrete and low-fluidity high-performance concrete
US-11168449-B2 · Nov 9, 2021 · US
Additive for internal post treatment of mineral binder compositions
US-11161791-B2 · Nov 2, 2021 · US
Method for defoaming cementitious compositions using polyamine oxides
US-11148975-B2 · Oct 19, 2021 · US
Polyalkoxylated polyamine oxide defoaming compositions
US-11130709-B2 · Sep 28, 2021 · US
Concrete compositions and methods for producing same
US-2021261459-A1 · Aug 26, 2021 · US
Thermally-conductive, low strength backfill material
US-11078117-B2 · Aug 3, 2021 · US
Porous molded body in the form of an insulating plaster layer or an insulating panel
US-11059755-B2 · Jul 13, 2021 · US
Permeable concrete vessel for creating floating aquatic habitats
US-11034415-B2 · Jun 15, 2021 · US
Self-consolidating geopolymer compositions and methods for making same
US-11021399-B2 · Jun 1, 2021 · US
Grinding stabilizing additive for vertical roller mills
US-2021122675-A1 · Apr 29, 2021 · US
Methods of forming cured composite materials with optimized ph and related compositions and systems
US-2021107834-A1 · Apr 15, 2021 · US
High strength concrete-like fluorogypsum-based blends and production methods
US-10865147-B2 · Dec 15, 2020 · US
Thermally-conductive, low strength backfill material
US-2020377415-A1 · Dec 3, 2020 · US
Thermo-insulating concrete
US-10752550-B2 · Aug 25, 2020 · US
Method for batch casting high-fluidity high-performance concrete and low-fluidity high-performance concrete
US-2020263369-A1 · Aug 20, 2020 · US
Self-consolidating geopolymer compositions and methods for making same
US-2020231503-A1 · Jul 23, 2020 · US
Self-desiccating, dimensionally-stable hydraulic cement compositions with enhanced workability
US-10584061-B2 · Mar 10, 2020 · US
Early strength enhancement of cements
US-2020055775-A1 · Feb 20, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B2103/304?
- CPC C04B2103/304 is the Cooperative Patent Classification code for “Air-entrainers.”
- How many patents are filed under CPC C04B2103/304 (Air-entrainers)?
- Our database includes 77 publications tagged with this CPC code.
- Is patent activity under CPC C04B2103/304 growing?
- Publication counts under this code: 6 in 2024 vs 3 in 2025 (latest complete years).