Biodegradable surfactant fluid loss control additive
US-2025179343-A1 · Jun 5, 2025 · US
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containing inorganic additives
containing inorganic additives · 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 | C09K8/265 |
| Official title | {containing inorganic additives} |
| Display label | containing inorganic additives |
| Total patents | 19 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 5 |
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Well conditioning method for wireline logging using dedicated aqueous based drilling fluid composition
US-12129423-B2 · Oct 29, 2024 · US
Perlite containing drilling fluids and uses thereof
US-11760913-B2 · Sep 19, 2023 · US
Well conditioning method for wireline logging using dedicated aqueous based drilling fluid composition
US-2023104709-A1 · Apr 6, 2023 · US
Emulsifiers for direct emulsion drilling fluids
US-11578248-B2 · Feb 14, 2023 · US
Composition and method for controlling lost circulation
US-11499085-B1 · Nov 15, 2022 · US
Palm oil invert emulsion hydrogen sulfide mitigating drilling fluid and method of drilling subterranean geological formation
US-11479707-B1 · Oct 25, 2022 · US
Emulsion system utilizing nitrogen and heat to treat deep water blockage
US-11458419-B2 · Oct 4, 2022 · US
Direct emulsions and methods of use
US-11441367-B2 · Sep 13, 2022 · US
Fiber silica composite microsphere for shale stratum, drilling fluid and preparation method and use thereof
US-11345841-B1 · May 31, 2022 · US
Wellbore drilling compositions
US-2021246352-A1 · Aug 12, 2021 · US
Perlite containing drilling fluids and uses thereof
US-2020392392-A1 · Dec 17, 2020 · US
Emulsifiers For Direct Emulsion Drilling Fluids
US-2020157402-A1 · May 21, 2020 · US
Method of drilling a subterranean geological formation
US-2019270925-A1 · Sep 5, 2019 · US
Direct Emulsions and Methods of Use
US-2018298706-A1 · Oct 18, 2018 · US
Wellbore fluids for use downhole
US-2017029686-A1 · Feb 2, 2017 · US
Method for recovering oil
US-9518211-B2 · Dec 13, 2016 · US
Emulsion system utilizing nitrogen and heat to treat deep water blockage
US-2016244661-A1 · Aug 25, 2016 · US
Method For Recovering Oil
US-2015361325-A1 · Dec 17, 2015 · US