Use of superabsorbent polymers for pressure control and diversion applications
US-10161223-B2 · Dec 25, 2018 · US
Foams
Foams · 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 | C09K8/703 |
| Official title | {Foams} |
| Display label | Foams |
| Total patents | 266 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 16 |
| 2017 | 16 |
| 2018 | 31 |
| 2019 | 21 |
| 2020 | 33 |
| 2021 | 37 |
| 2022 | 25 |
| 2023 | 24 |
| 2024 | 29 |
| 2025 | 16 |
| 2026 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cationic polymers for foam fracturing applications
US-10155901-B2 · Dec 18, 2018 · US
Fracturing fluids and methods of treating hydrocarbon formations
US-2018328147-A1 · Nov 15, 2018 · US
Pulsed hydraulic fracturing with nanosilica carrier fluid
US-10113406-B1 · Oct 30, 2018 · US
Fracturing fluids and methods of treating hydrocarbon formations
US-10113396-B2 · Oct 30, 2018 · US
In situ solid organic pillar placement in fracture networks
US-2018298271-A1 · Oct 18, 2018 · US
Multifunctional foaming composition with wettability modifying, corrosion inhibitory and mineral scale inhibitory/dispersants properties for high temperature and ultra high salinity
US-2018273830-A1 · Sep 27, 2018 · US
Modified nonionic surfactant formulations for enhanced oil recovery
US-10077394-B2 · Sep 18, 2018 · US
Methods of using superabsorbent polymers for fracturing and sand control applications
US-10072478-B2 · Sep 11, 2018 · US
Emulsions containing water-soluble acid retarding agents and methods of making and using
US-2018244980-A1 · Aug 30, 2018 · US
Micro-proppant fracturing fluid compositions for enhancing complex fracture network performance
US-2018237685-A1 · Aug 23, 2018 · US
Siloxane surfactant additives for oil and gas applications
US-10053619-B2 · Aug 21, 2018 · US
Forming proppant packs having proppant-free channels therein in subterranean formation fractures
US-10047281-B2 · Aug 14, 2018 · US
Proppant drying system and method
US-10017686-B1 · Jul 10, 2018 · US
Drilling fluids with leakoff control and drill cuttings removal sweeps
US-9976390-B2 · May 22, 2018 · US
Chelating etching agent stimulation and proppant stabilization of low-permeability subterranean formations
US-2018127640-A1 · May 10, 2018 · US
Forming proppant packs having proppant-free channels therein in subterranean formation fractures
US-2018044577-A1 · Feb 15, 2018 · US
Novel surfactants for carbon dioxide in oil foams
US-2018044573-A1 · Feb 15, 2018 · US
Foamed fluid compositions having high salinity using anionic surfactants and methods therefor
US-9828815-B2 · Nov 28, 2017 · US
Y-grade ngl stimulation fluids
US-2017298268-A1 · Oct 19, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K8/703?
- CPC C09K8/703 is the Cooperative Patent Classification code for “Foams.”
- How many patents are filed under CPC C09K8/703 (Foams)?
- Our database includes 266 publications tagged with this CPC code.
- Is patent activity under CPC C09K8/703 growing?
- Publication counts under this code: 29 in 2024 vs 16 in 2025 (latest complete years).