Method for engineered geothermal system treatment using brines
US-2024352305-A1 · Oct 24, 2024 · US
containing inorganic compounds (proppants C09K8/80)
containing inorganic compounds (proppants C09K8/80) · 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 | C09K8/665 |
| Official title | {containing inorganic compounds (proppants C09K8/80)} |
| Display label | containing inorganic compounds (proppants C09K8/80) |
| Total patents | 586 |
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 | 22 |
| 2016 | 33 |
| 2017 | 45 |
| 2018 | 60 |
| 2019 | 88 |
| 2020 | 80 |
| 2021 | 80 |
| 2022 | 59 |
| 2023 | 45 |
| 2024 | 37 |
| 2025 | 32 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Partially degradable particulates as time-released tracers for acidized and fractured gas wells
US-2024209729-A1 · Jun 27, 2024 · US
Nanoparticle modified fluids and methods of manufacture thereof
US-9809740-B2 · Nov 7, 2017 · US
Propping compositions for enhancing fracture conductivity
US-9752072-B2 · Sep 5, 2017 · US
Treatment of kerogen in subterranean formations
US-2017066959-A1 · Mar 9, 2017 · US
Downhole structures including soluble glass
US-2016369154-A1 · Dec 22, 2016 · US
Thermal insulating fluids
US-9523028-B2 · Dec 20, 2016 · US
Nano-dispersion well servicing fluid containing a pH adjuster
US-9518213-B2 · Dec 13, 2016 · US
Nano-proppants for fracture conductivity
US-2016355727-A1 · Dec 8, 2016 · US
Method of treating a subterranean formation with a mortar slurry designed to form a permeable mortar
US-2016341022-A1 · Nov 24, 2016 · US
Crosslinker composition including synthetic layered silicate
US-2016333255-A1 · Nov 17, 2016 · US
Chemically-induced pulsed fracturing method
US-9488042-B2 · Nov 8, 2016 · US
Compositions For Enhanced Fracture Cleanup Using Redox Treatment
US-2016319182-A1 · Nov 3, 2016 · US
Surface modification agent emulsions comprising hydrophobically modified amine-containing polymers for use in subterranean formations
US-2016319183-A1 · Nov 3, 2016 · US
Immiscible fluid systems and methods of use for placing proppant in subterranean formations
US-2016312595-A1 · Oct 27, 2016 · US
Methods of Controlling Water Production in Horizontal Wells with Multistage Fractures
US-2016273327-A1 · Sep 22, 2016 · US
Improved gel stability
US-2016272877-A1 · Sep 22, 2016 · US
Polymer compositions
US-2016262377-A1 · Sep 15, 2016 · US
Composition For Enhanced Fracture Cleanup Using Redox Treatment
US-2016264859-A1 · Sep 15, 2016 · US
Fracturing tight subterranean formations with a cement composition
US-2016245061-A1 · Aug 25, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K8/665?
- CPC C09K8/665 is the Cooperative Patent Classification code for “containing inorganic compounds (proppants C09K8/80).”
- How many patents are filed under CPC C09K8/665 (containing inorganic compounds (proppants C09K8/80))?
- Our database includes 586 publications tagged with this CPC code.
- Is patent activity under CPC C09K8/665 growing?
- Publication counts under this code: 37 in 2024 vs 32 in 2025 (latest complete years).