Synthesis of sodium formate and drilling fluid comprising the same
US-2019375700-A1 · Dec 12, 2019 · US
Chemistry & Metallurgy
Chemistry & Metallurgy · 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 | C09K8/06 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 162 |
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 | 9 |
| 2016 | 14 |
| 2017 | 15 |
| 2018 | 11 |
| 2019 | 21 |
| 2020 | 22 |
| 2021 | 22 |
| 2022 | 17 |
| 2023 | 13 |
| 2024 | 11 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Novel Downhole Methods
US-2019345376-A1 · Nov 14, 2019 · US
Shale Hydration Inhibition Agent
US-2019322919-A1 · Oct 24, 2019 · US
High temperature viscoelastic surfactant (VES) fluids comprising nanoparticle viscosity modifiers
US-10407606-B2 · Sep 10, 2019 · US
Date Tree Trunk-Based Fibrous Loss Circulation Materials
US-2019233705-A1 · Aug 1, 2019 · US
Surfactant flowback aids for use in subterranean formation operations
US-2019194526-A1 · Jun 27, 2019 · US
High density brines
US-2019161667-A1 · May 30, 2019 · US
Stabilization of iodide-containing brines and brine mixtures
US-2019119557-A1 · Apr 25, 2019 · US
Weighted well fluids
US-10214674-B2 · Feb 26, 2019 · US
Compositions and method for treating out hydrogen sulfide and preventing settling of precipitate in an environmentally responsible drilling and packer fluid
US-10214678-B2 · Feb 26, 2019 · US
Functionalized nanosilica as shale inhibitor in water-based fluids
US-2019010377-A1 · Jan 10, 2019 · US
Synthetic hydroxide compositions and uses thereof
US-2018355491-A1 · Dec 13, 2018 · US
Hydrophobically-treated particulates for improved fluid rheology
US-2018320049-A1 · Nov 8, 2018 · US
Exothermic reactants for use in subterranean formation treatment fluids
US-2018305600-A1 · Oct 25, 2018 · US
Compositions and methods of use of water-based drilling fluids with increased thermal stability
US-2018223155-A1 · Aug 9, 2018 · US
Multi-modal particle size distribution lost circulation material
US-10035941-B2 · Jul 31, 2018 · US
Temperature stability of polyols and sugar alcohols in brines
US-2018171198-A1 · Jun 21, 2018 · US
Divalent brine fluids having improved rheology and multifunctional properties
US-2018155598-A1 · Jun 7, 2018 · US
Methods and systems for preparing surfactant polyelectrolyte complexes for use in subterranean formations
US-9982185-B2 · May 29, 2018 · US
Triggered heating of wellbore fluids by carbon nanomaterials
US-9970246-B2 · May 15, 2018 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K8/06?
- CPC C09K8/06 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C09K8/06 (Chemistry & Metallurgy)?
- Our database includes 162 publications tagged with this CPC code.
- Is patent activity under CPC C09K8/06 growing?
- Publication counts under this code: 11 in 2024 vs 5 in 2025 (latest complete years).