Spacer fluids and cement slurries that include surfactants
US-2018223168-A1 · Aug 9, 2018 · US
Surface-active agents, dispersants
Surface-active agents, dispersants · 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 | C04B2103/40 |
| Official title | Surface-active agents, dispersants |
| Display label | Surface-active agents, dispersants |
| Total patents | 317 |
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 | 15 |
| 2016 | 11 |
| 2017 | 33 |
| 2018 | 43 |
| 2019 | 54 |
| 2020 | 59 |
| 2021 | 35 |
| 2022 | 20 |
| 2023 | 17 |
| 2024 | 18 |
| 2025 | 11 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Transportation and delivery of set-delayed cement compositions
US-9850419-B2 · Dec 26, 2017 · US
Hydrophobic low shrinkage lightweight cementitious matrix
US-9840440-B2 · Dec 12, 2017 · US
Pourable compositions
US-2017349492-A1 · Dec 7, 2017 · US
Filler compound comprising a positively charged polymer
US-9809696-B2 · Nov 7, 2017 · US
Surface treatment agent for wax pattern and method of manufacturing dental prosthesis
US-2017304034-A1 · Oct 26, 2017 · US
In situ refractory binder compositions
US-9796903-B2 · Oct 24, 2017 · US
Methods and compositions for treating a subterranean formation with salt-tolerant cement slurries
US-9796905-B2 · Oct 24, 2017 · US
Continuous esterification and/or amidification method, without organic solvent, of an acid homopolymer or copolymer
US-2017297255-A1 · Oct 19, 2017 · US
Compositions and methods for cleaning subterranean boreholes
US-9790420-B2 · Oct 17, 2017 · US
Enzymatically modified lignins
US-2017267816-A1 · Sep 21, 2017 · US
Gypsum plaster-based material containing an EDTA metal complex
US-9764983-B2 · Sep 19, 2017 · US
Water repellent organosilicon materials
US-9758431-B2 · Sep 12, 2017 · US
Settable cement compositions for terminating water flow and associated methods
US-2017247294-A1 · Aug 31, 2017 · US
A process for hydrophobization of concrete
US-2017240468-A1 · Aug 24, 2017 · US
Method for producing a prefabricated building material
US-2017240467-A1 · Aug 24, 2017 · US
Amphoteric polymer suspending agent for use in calcium aluminate cement compositions
US-9738821-B2 · Aug 22, 2017 · US
High strength, operationally robust lost circulation preventative pseudo-crosslinked material
US-9708869-B2 · Jul 18, 2017 · US
Water repellent for concrete
US-9701590-B2 · Jul 11, 2017 · US
Process of preparing a siloxane copolymer
US-9701879-B2 · Jul 11, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B2103/40?
- CPC C04B2103/40 is the Cooperative Patent Classification code for “Surface-active agents, dispersants.”
- How many patents are filed under CPC C04B2103/40 (Surface-active agents, dispersants)?
- Our database includes 317 publications tagged with this CPC code.
- Is patent activity under CPC C04B2103/40 growing?
- Publication counts under this code: 18 in 2024 vs 11 in 2025 (latest complete years).