High-intensity acoustic treatment of colloidal mineral suspensions for wellbore operations
US-2021404270-A1 · Dec 30, 2021 · US
characterised by the inorganic compounds other than clay
characterised by the inorganic compounds other than clay · 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 | C09K8/16 |
| Official title | characterised by the inorganic compounds other than clay |
| Display label | characterised by the inorganic compounds other than clay |
| Total patents | 125 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 6 |
| 2019 | 19 |
| 2020 | 17 |
| 2021 | 18 |
| 2022 | 14 |
| 2023 | 14 |
| 2024 | 17 |
| 2025 | 13 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Suspension Supporting Additive for Water-Based Drilling and Completions Fluids
US-2021395596-A1 · Dec 23, 2021 · US
Method and materials to convert a drilling mud into a solid gel based lost circulation material
US-11203710-B2 · Dec 21, 2021 · US
Potassium salt treatment fluids for clay stabilization
US-2021355365-A1 · Nov 18, 2021 · US
Well treatment fluid having biodegradable fluid loss control agent
US-11162012-B2 · Nov 2, 2021 · US
Well treatment fluid having biodegradable fluid loss control agent
US-2021309907-A1 · Oct 7, 2021 · US
Hydrating swellable clays
US-11130707-B2 · Sep 28, 2021 · US
Utilization of steel-making waste in drilling fluids formulations
US-11034874-B2 · Jun 15, 2021 · US
Solid/liquid high film strength fluid lubricant
US-11028306-B2 · Jun 8, 2021 · US
Pozzolanic by-product for slurry yield enhancement
US-11001742-B2 · May 11, 2021 · US
Pozzolanic By-Product For Slurry Yield Enhancement
US-2021062065-A1 · Mar 4, 2021 · US
Drilling fluids that include water-soluble acid catalysts and uses for such
US-2020399521-A1 · Dec 24, 2020 · US
Perlite containing drilling fluids and uses thereof
US-2020392392-A1 · Dec 17, 2020 · US
Loss circulation material for seepage to moderate loss control
US-10844265-B2 · Nov 24, 2020 · US
Modified nano-silica plugging agent, water-based drilling fluid, and preparation method and use thereof
US-10829681-B1 · Nov 10, 2020 · US
Micro-nanometer plugging anti-collapse drilling fluid and preparation method and use thereof
US-10829679-B1 · Nov 10, 2020 · US
Water-based drilling, completion, and workover fluid composition with reduced barite sagging
US-2020317981-A1 · Oct 8, 2020 · US
Lost Circulation Material (LCM) Pill for Total Loss Control
US-2020317982-A1 · Oct 8, 2020 · US
Hydrating Swellable Clays
US-2020283336-A1 · Sep 10, 2020 · US
Method and materials to convert a drilling mud into a solid gel based lost circulation material
US-2020270503-A1 · Aug 27, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K8/16?
- CPC C09K8/16 is the Cooperative Patent Classification code for “characterised by the inorganic compounds other than clay.”
- How many patents are filed under CPC C09K8/16 (characterised by the inorganic compounds other than clay)?
- Our database includes 125 publications tagged with this CPC code.
- Is patent activity under CPC C09K8/16 growing?
- Publication counts under this code: 17 in 2024 vs 13 in 2025 (latest complete years).