Siloxane surfactant additives for oil and gas applications
US-2020216749-A1 · Jul 9, 2020 · US
Polymeric surfactants
Polymeric surfactants · 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 | C09K8/604 |
| Official title | {Polymeric surfactants} |
| Display label | Polymeric surfactants |
| Total patents | 196 |
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 | 6 |
| 2016 | 8 |
| 2017 | 8 |
| 2018 | 14 |
| 2019 | 20 |
| 2020 | 24 |
| 2021 | 26 |
| 2022 | 23 |
| 2023 | 36 |
| 2024 | 21 |
| 2025 | 9 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Alkyl polyglycoside surfactants for use in subterranean formations
US-2020181480-A1 · Jun 11, 2020 · US
Siloxane surfactant additives for oil and gas applications
US-10590332-B2 · Mar 17, 2020 · US
Methods for producing seawater based, high temperature viscoelastic surfactant fluids with low scaling tendency
US-2020017757-A1 · Jan 16, 2020 · US
Surfactant compositions
US-10501677-B2 · Dec 10, 2019 · US
Sugar-based surfactant for well treatment fluids
US-2019345372-A1 · Nov 14, 2019 · US
Phase Transition Material Fluid and Proppant Formed Therefrom
US-2019300777-A1 · Oct 3, 2019 · US
Diluted microemulsions with low surface tensions
US-2019284467-A1 · Sep 19, 2019 · US
Fracturing fluid composition comprising a bio-based surfactant and method of use
US-2019264096-A1 · Aug 29, 2019 · US
Ves fluids having improved rheology at high temperature and high salinity
US-2019225874-A1 · Jul 25, 2019 · US
Emulsions, Treatment Fluids and Methods for Treating Subterranean Formations
US-2019211255-A1 · Jul 11, 2019 · US
Systems and methods for breaking friction reducers in-situ
US-10344205-B2 · Jul 9, 2019 · US
Proppant Materials for Additive Delivery
US-2019161672-A1 · May 30, 2019 · US
Phase-change hydraulic fracturing process
US-10301919-B2 · May 28, 2019 · US
Drag-reducing additives having dispersion polymers and microemulsions and methods for preparing and using same
US-2019153304-A1 · May 23, 2019 · US
Surfactant responsive emulsion polymerized micro-gels
US-10265263-B2 · Apr 23, 2019 · US
Method of Preparing and Using a Drag-Reducing Additive Having a Dispersion Polymer
US-2019093003-A1 · Mar 28, 2019 · US
Siloxane surfactant additives for oil and gas applications
US-2019085236-A1 · Mar 21, 2019 · US
Foam composition
US-10227524-B2 · Mar 12, 2019 · US
Delayed gelling agents
US-2019071598-A1 · Mar 7, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K8/604?
- CPC C09K8/604 is the Cooperative Patent Classification code for “Polymeric surfactants.”
- How many patents are filed under CPC C09K8/604 (Polymeric surfactants)?
- Our database includes 196 publications tagged with this CPC code.
- Is patent activity under CPC C09K8/604 growing?
- Publication counts under this code: 21 in 2024 vs 9 in 2025 (latest complete years).