Composite gels for water shutoff in fractured reservoirs
US-12227692-B1 · Feb 18, 2025 · US
Compositions based on water or polar solvents (C09K8/502 takes precedence)
Compositions based on water or polar solvents (C09K8/502 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 | C09K8/504 |
| Official title | Compositions based on water or polar solvents (C09K8/502 takes precedence) |
| Display label | Compositions based on water or polar solvents (C09K8/502 takes precedence) |
| Total patents | 56 |
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 | 9 |
| 2017 | 2 |
| 2018 | 5 |
| 2019 | 7 |
| 2020 | 7 |
| 2021 | 7 |
| 2022 | 6 |
| 2023 | 8 |
| 2024 | 3 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Composite gels for water shutoff in fractured reservoirs
US-2025051630-A1 · Feb 13, 2025 · US
Filter cake removal compositions and methods of making and using same
US-12024673-B2 · Jul 2, 2024 · US
Coated nanosand as relative permeability modifier
US-11993750-B2 · May 28, 2024 · US
Downhole fluids and methods of use thereof
US-11898085-B2 · Feb 13, 2024 · US
Coated nanosand as relative permeability modifier
US-11827852-B2 · Nov 28, 2023 · US
Polymer-sand nanocomposite lost circulation material
US-11828116-B2 · Nov 28, 2023 · US
Methods of forming hydrophobic surfaces for enhancing performance of geothermal operations
US-11795365-B1 · Oct 24, 2023 · US
Coated nanosand as relative permeability modifier
US-2023313028-A1 · Oct 5, 2023 · US
Filter Cake Removal Compositions and Methods of Making and Using Same
US-2023167352-A1 · Jun 1, 2023 · US
Polymer-sand nanocomposite lost circulation material
US-2023142223-A1 · May 11, 2023 · US
Coated nanosand as relative permeability modifier
US-2023060690-A1 · Mar 2, 2023 · US
Polymer-sand nanocomposite lost circulation material
US-11578543-B2 · Feb 14, 2023 · US
Coated nanosand as relative permeability modifier
US-11499092-B2 · Nov 15, 2022 · US
Coated Nanosand as Relative Permeability Modifier
US-2022259488-A1 · Aug 18, 2022 · US
Contrast enhancement agents for subterranean treatment fluids
US-11319801-B2 · May 3, 2022 · US
Polymer-sand nanocomposite lost circulation material
US-2022112777-A1 · Apr 14, 2022 · US
Downhole fluids and methods of use thereof
US-2022081603-A1 · Mar 17, 2022 · US
Method of restraining migration of formation solids in a wellbore
US-11255166-B2 · Feb 22, 2022 · US
Downhole fluids and methods of use thereof
US-11168241-B2 · Nov 9, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K8/504?
- CPC C09K8/504 is the Cooperative Patent Classification code for “Compositions based on water or polar solvents (C09K8/502 takes precedence).”
- How many patents are filed under CPC C09K8/504 (Compositions based on water or polar solvents (C09K8/502 takes precedence))?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC C09K8/504 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).