Process for carbon capture and sequestration in a subsurface formation by injection of liquefied biomass
US-2024167365-A1 · May 23, 2024 · US
Oil-based compositions
Oil-based compositions · 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 | C09K8/64 |
| Official title | Oil-based compositions |
| Display label | Oil-based compositions |
| Total patents | 404 |
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 | 18 |
| 2016 | 42 |
| 2017 | 67 |
| 2018 | 49 |
| 2019 | 44 |
| 2020 | 49 |
| 2021 | 47 |
| 2022 | 23 |
| 2023 | 24 |
| 2024 | 23 |
| 2025 | 15 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Composition including viscosifier polymer and polyamine viscosity modifier for treatment of subterranean formations
US-2016355722-A1 · Dec 8, 2016 · US
Downhole fluid compositions and methods of using carbon black particles
US-2016326423-A1 · Nov 10, 2016 · US
Stabilized blends containing antioxidants
US-2016319212-A1 · Nov 3, 2016 · US
Compositions For Enhanced Fracture Cleanup Using Redox Treatment
US-2016319182-A1 · Nov 3, 2016 · US
Method for fracturing rocks
US-2016312107-A1 · Oct 27, 2016 · US
Immiscible fluid systems and methods of use for placing proppant in subterranean formations
US-2016312595-A1 · Oct 27, 2016 · US
Thickening compositions, and related materials and processes
US-2016297934-A1 · Oct 13, 2016 · US
Drilling fluids with leakoff control and drill cuttings removal sweeps
US-2016289530-A1 · Oct 6, 2016 · US
Treatment of subterranean formations with compositions including polyether-functionalized polysiloxanes
US-2016289526-A1 · Oct 6, 2016 · US
Compositions of and methods for using hydraulic fracturing fluid for petroleum production
US-2016289543-A1 · Oct 6, 2016 · US
Fracturing fluids and methods of treating hydrocarbon formations
US-2016289549-A1 · Oct 6, 2016 · US
Use of superabsorbent polymers for pressure control and diversion applications
US-2016289541-A1 · Oct 6, 2016 · US
Fracturing fluids and methods of treating hydrocarbon formations
US-2016289542-A1 · Oct 6, 2016 · US
Casing flush fluid, recyclable cleanout fluids, and applications thereof
US-2016290104-A1 · Oct 6, 2016 · US
Methods of using superabsorbent polymers for fracturing and sand control applications
US-2016289547-A1 · Oct 6, 2016 · US
Viscosifier for treatment of a subterranean formation
US-2016264835-A1 · Sep 15, 2016 · US
Hydrofluoric Based Invert Emulsions for Shale Stimulation
US-2016264849-A1 · Sep 15, 2016 · US
Treatment fluids containing a hydrophobically modified chelating agent and methods for use thereof
US-2016244660-A1 · Aug 25, 2016 · US
Dual-purpose viscosifier and surface active additives and methods of use
US-2016230065-A1 · Aug 11, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K8/64?
- CPC C09K8/64 is the Cooperative Patent Classification code for “Oil-based compositions.”
- How many patents are filed under CPC C09K8/64 (Oil-based compositions)?
- Our database includes 404 publications tagged with this CPC code.
- Is patent activity under CPC C09K8/64 growing?
- Publication counts under this code: 23 in 2024 vs 15 in 2025 (latest complete years).