Enhanced oil recovery with Janus nanoparticles
US-12091611-B2 · Sep 17, 2024 · US
Structured surfactants, i.e. well drilling or treating fluids with a lamellar or spherulitic phase
Structured surfactants, i.e. well drilling or treating fluids with a lamellar or spherulitic phase · 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 | C09K2208/06 |
| Official title | Structured surfactants, i.e. well drilling or treating fluids with a lamellar or spherulitic phase |
| Display label | Structured surfactants, i.e. well drilling or treating fluids with a lamellar or spherulitic phase |
| Total patents | 66 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 2 |
| 2019 | 11 |
| 2020 | 12 |
| 2021 | 11 |
| 2022 | 5 |
| 2023 | 13 |
| 2024 | 5 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Polyacrylamide-based symmetric branched polymer surfactant and a process for preparing the same and use thereof
US-2023392069-A1 · Dec 7, 2023 · US
Enhanced oil recovery with janus nanoparticles
US-11827850-B2 · Nov 28, 2023 · US
Scale control in production fluids
US-11781225-B2 · Oct 10, 2023 · US
Superheated phase changing nanodroplets for hydrocarbon reservoir applications
US-2023313025-A1 · Oct 5, 2023 · US
Composition with foaming properties
US-2023265336-A1 · Aug 24, 2023 · US
Methods for preparing liquid-solid phase change proppant with a controllable particle size based on emulsified resin
US-11708527-B1 · Jul 25, 2023 · US
Superheated phase changing nanodroplets for hydrocarbon reservoir applications
US-11708524-B1 · Jul 25, 2023 · US
Scale control in production fluids
US-2023167558-A1 · Jun 1, 2023 · US
N,N,N′,N′-tetradodecyl-substituted diphenyl ether sulfonate anionic Gemini surfactant and synthesis method thereof
US-11629283-B2 · Apr 18, 2023 · US
Surfactant composition, and manufacturing method and application of same
US-11578253-B2 · Feb 14, 2023 · US
Emulsifiers for direct emulsion drilling fluids
US-11578248-B2 · Feb 14, 2023 · US
Gemini surfactants containing an unsaturated linker for clay swelling inhibition
US-11566167-B2 · Jan 31, 2023 · US
Method of removing calcium-containing water-based filter cake using a biodegradable acid solution
US-11566161-B2 · Jan 31, 2023 · US
Nonionic Gemini surfactant of (octylphenol polyoxyethylene ether disubstituted) dicarboxylic acid diphenyl ether and its synthesis method
US-11505734-B2 · Nov 22, 2022 · US
Loaded, sealed nanotubes for oil recovery
US-11312895-B2 · Apr 26, 2022 · US
Gemini surfactants containing an arylene linker for clay swelling inhibition
US-11292957-B2 · Apr 5, 2022 · US
Surfactant responsive emulsion polymerization micro-gels
US-11274173-B2 · Mar 15, 2022 · US
Enhanced Oil Recovery with Janus Nanoparticles
US-2022025248-A1 · Jan 27, 2022 · US
Methods and compositions of using viscoelastic surfactants as diversion agents
US-11203712-B1 · Dec 21, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K2208/06?
- CPC C09K2208/06 is the Cooperative Patent Classification code for “Structured surfactants, i.e. well drilling or treating fluids with a lamellar or spherulitic phase.”
- How many patents are filed under CPC C09K2208/06 (Structured surfactants, i.e. well drilling or treating fluids with a lamellar or spherulitic phase)?
- Our database includes 66 publications tagged with this CPC code.
- Is patent activity under CPC C09K2208/06 growing?
- Publication counts under this code: 5 in 2024 vs 2 in 2025 (latest complete years).