Building materials from an aqueous solution
US-2017341982-A1 · Nov 30, 2017 · US
Chemistry & Metallurgy
Chemistry & Metallurgy · 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 | C04B28/021 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 226 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 21 |
| 2016 | 25 |
| 2017 | 16 |
| 2018 | 24 |
| 2019 | 17 |
| 2020 | 19 |
| 2021 | 31 |
| 2022 | 15 |
| 2023 | 26 |
| 2024 | 15 |
| 2025 | 13 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compositions containing kiln dust and/or biowaste ash and methods of use
US-9809737-B2 · Nov 7, 2017 · US
Insulated concrete slip form and method of accelerating concrete curing using same
US-9776920-B2 · Oct 3, 2017 · US
Composition Including a Curable Resin and Organophilically-Modified Clay for Subterranean Oil Well Applications
US-2017247598-A1 · Aug 31, 2017 · US
Methods Of Cementing And Lassenite-Containing Cement Compositions
US-2017210670-A1 · Jul 27, 2017 · US
Dimensionally stable geopolymer composition and method
US-2017174571-A1 · Jun 22, 2017 · US
Dimensionally stable geopolymer composition and method
US-2017174570-A1 · Jun 22, 2017 · US
Sealant compositions comprising cement kiln dust and tire-rubber particles and method of use
US-9676989-B2 · Jun 13, 2017 · US
Dimensionally stable geopolymer composition and method
US-9656916-B2 · May 23, 2017 · US
Exterior insulation mortar for cold weather and method for constructing exterior insulation system using same
US-9650782-B2 · May 16, 2017 · US
Methods of cementing and lassenite-containing cement compositions
US-9650560-B2 · May 16, 2017 · US
Dimensionally stable geopolymer composition and method
US-9643888-B2 · May 9, 2017 · US
Fly ash processing and manufacture of articles incorporating fly ash compositions
US-2017073274-A1 · Mar 16, 2017 · US
Functionalized brine sludge material and a process for the preparation thereof
US-2017057868-A1 · Mar 2, 2017 · US
Fly ash processing and manufacture of articles incorporating fly ash compositions
US-9512038-B2 · Dec 6, 2016 · US
Method of accelerating curing and improving the physical properties of pozzolanic and cementitious-based material
US-9505657-B2 · Nov 29, 2016 · US
Supplementary cementitious material and method for disposing of electric-arc furnace dust (EAFD)
US-9481604-B2 · Nov 1, 2016 · US
Corrosion protected fibre-reinforced cement composition for use in cold temperature conditions
US-9469569-B2 · Oct 18, 2016 · US
Binder compositions and method of synthesis
US-2016264466-A1 · Sep 15, 2016 · US
Hydrophobic finish compositions with extended flow time retention and building products made thereof
US-2016264461-A1 · Sep 15, 2016 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B28/021?
- CPC C04B28/021 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C04B28/021 (Chemistry & Metallurgy)?
- Our database includes 226 publications tagged with this CPC code.
- Is patent activity under CPC C04B28/021 growing?
- Publication counts under this code: 15 in 2024 vs 13 in 2025 (latest complete years).