Using polyaminated fatty acid-based oil compositions for controlling dust from additive particles
US-2018291259-A1 · Oct 11, 2018 · US
Compositions based on water or polar solvents (C09K8/64 takes precedence)
Compositions based on water or polar solvents (C09K8/64 takes precedence) · 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 | C09K8/66 |
| Official title | Compositions based on water or polar solvents (C09K8/64 takes precedence) |
| Display label | Compositions based on water or polar solvents (C09K8/64 takes precedence) |
| Total patents | 222 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 21 |
| 2017 | 19 |
| 2018 | 27 |
| 2019 | 24 |
| 2020 | 27 |
| 2021 | 22 |
| 2022 | 24 |
| 2023 | 20 |
| 2024 | 14 |
| 2025 | 15 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of delivering frac fluid and additives
US-10082011-B1 · Sep 25, 2018 · US
Rotary Steerable Drilling Tool and Method
US-2018252088-A1 · Sep 6, 2018 · US
Emulsions containing water-soluble acid retarding agents and methods of making and using
US-2018244980-A1 · Aug 30, 2018 · US
Methods of propping created fractures and microfractures in tight formation
US-2018238159-A1 · Aug 23, 2018 · US
Forming proppant packs having proppant-free channels therein in subterranean formation fractures
US-10047281-B2 · Aug 14, 2018 · US
Method of making particles having a ridge portion for use as proppant
US-2018223176-A1 · Aug 9, 2018 · US
Proppant Comprising Swellable Coating Thereon for Treatment of Subterranean Formations
US-2018201828-A1 · Jul 19, 2018 · US
Use of peracetic acid/hydrogen peroxide and peroxide-reducing agents for treatment of drilling fluids, frac fluids, flowback water and disposal water
US-10023484-B2 · Jul 17, 2018 · US
Use of peracetic acid/hydrogen peroxide and peroxide-reducing enzymes for treatment of drilling fluids, frac fluids, flowback water and disposal water
US-10017403-B2 · Jul 10, 2018 · US
Fracturing fluids containing hydrophilic fibers
US-2018127644-A1 · May 10, 2018 · US
Composition for enhanced fracture cleanup using redox treatment
US-9963631-B2 · May 8, 2018 · US
Method of making particles having a ridge portion for use as proppant
US-9932519-B2 · Apr 3, 2018 · US
Forming proppant packs having proppant-free channels therein in subterranean formation fractures
US-2018044577-A1 · Feb 15, 2018 · US
Reclamation of brines with metal contamination using lime
US-2018023376-A1 · Jan 25, 2018 · US
Method for enhancing hydrocarbon recovery from tight formations
US-2017356281-A1 · Dec 14, 2017 · US
Crosslinker-coated proppant particulates for use in treatment fluids comprising gelling agents
US-9840660-B2 · Dec 12, 2017 · US
Capsules containing micro-proppant and a substance to produce micro-seismic events
US-2017350244-A1 · Dec 7, 2017 · US
Compositions of and methods for using hydraulic fracturing fluid for petroleum production
US-9834721-B2 · Dec 5, 2017 · US
Method of using surface modifying treatment agents to treat subterranean formations
US-9822621-B2 · Nov 21, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K8/66?
- CPC C09K8/66 is the Cooperative Patent Classification code for “Compositions based on water or polar solvents (C09K8/64 takes precedence).”
- How many patents are filed under CPC C09K8/66 (Compositions based on water or polar solvents (C09K8/64 takes precedence))?
- Our database includes 222 publications tagged with this CPC code.
- Is patent activity under CPC C09K8/66 growing?
- Publication counts under this code: 14 in 2024 vs 15 in 2025 (latest complete years).