Hydraulically-Bonded Multilayer Panel
US-2024059614-A1 · Feb 22, 2024 · US
Silica fume
Silica fume · 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 | C04B18/146 |
| Official title | {Silica fume} |
| Display label | Silica fume |
| Total patents | 285 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 18 |
| 2017 | 23 |
| 2018 | 30 |
| 2019 | 29 |
| 2020 | 40 |
| 2021 | 26 |
| 2022 | 27 |
| 2023 | 22 |
| 2024 | 33 |
| 2025 | 22 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of using combined set-delayed cement compositions
US-10160900-B2 · Dec 25, 2018 · US
Solid particulate calcium nitrate composition comprising a solid particulate silicate as an anti-caking agent
US-2018297897-A1 · Oct 18, 2018 · US
High Performance Fire Resistant Concrete Containing Hybrid Fibers and Nano Particles
US-2018237338-A1 · Aug 23, 2018 · US
Tunable control of pozzolan-lime cement compositions
US-10047270-B2 · Aug 14, 2018 · US
Microstructured carbonatable calcium silicate clinkers and methods thereof
US-2018186696-A1 · Jul 5, 2018 · US
Manufactured natural pozzolan, improved manufactured natural pozzolan-based cement and method of making and using same
US-2018099907-A1 · Apr 12, 2018 · US
Set-delayed cement compositions comprising pumice and associated methods
US-9878949-B2 · Jan 30, 2018 · US
Ultra-high performance glass concrete and method for producing same
US-9856171-B2 · Jan 2, 2018 · US
Liquid coloring suspension and colored cementitious composition
US-9850166-B2 · Dec 26, 2017 · US
Geopolymer cement compositions and methods of use
US-9840653-B2 · Dec 12, 2017 · US
Compositions containing kiln dust and/or biowaste ash and methods of use
US-9809737-B2 · Nov 7, 2017 · US
Process for the preparation of cement, mortars, concrete compositions containing a calcium carbonate-based filler treated with an ultrafine filler and a superplastifier, compositions and cement products obtained and their applications
US-9802861-B2 · Oct 31, 2017 · US
Additive for rheology improvement of inorganic binders
US-9803053-B2 · Oct 31, 2017 · US
Methods and compositions for treating a subterranean formation with salt-tolerant cement slurries
US-9796905-B2 · Oct 24, 2017 · US
Silica composition for servicing subterranean wells
US-9790418-B2 · Oct 17, 2017 · US
Structural lightweight concrete with superior thermal insulation
US-2017283319-A1 · Oct 5, 2017 · US
Extended-life calcium aluminate cementing methods
US-2017283682-A1 · Oct 5, 2017 · US
Cement composition and manufacturing method for cement cured body using same
US-2017275203-A1 · Sep 28, 2017 · US
Compositions and methods for cementing wells
US-9738822-B2 · Aug 22, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B18/146?
- CPC C04B18/146 is the Cooperative Patent Classification code for “Silica fume.”
- How many patents are filed under CPC C04B18/146 (Silica fume)?
- Our database includes 285 publications tagged with this CPC code.
- Is patent activity under CPC C04B18/146 growing?
- Publication counts under this code: 33 in 2024 vs 22 in 2025 (latest complete years).