Acid corrosion inhibitors
US-11981861-B2 · May 14, 2024 · US
Ethers, e.g. polyglycol ethers of alcohols or phenols
Ethers, e.g. polyglycol ethers of alcohols or phenols · 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 | C09K23/42 |
| Official title | Ethers, e.g. polyglycol ethers of alcohols or phenols |
| Display label | Ethers, e.g. polyglycol ethers of alcohols or phenols |
| Total patents | 205 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 9 |
| 2017 | 12 |
| 2018 | 32 |
| 2019 | 27 |
| 2020 | 36 |
| 2021 | 20 |
| 2022 | 20 |
| 2023 | 17 |
| 2024 | 10 |
| 2025 | 12 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for the preparation of eugenol polyethers that can be hydrosilylated and eugenol polyethersiloxanes and use thereof
US-10160832-B2 · Dec 25, 2018 · US
Control of evaporation of emulsions stabilized with lignin
US-2018344590-A1 · Dec 6, 2018 · US
Aqueous emulsion of dialkyl peroxide
US-10138350-B2 · Nov 27, 2018 · US
Method for Producing Emulsion
US-2018326371-A1 · Nov 15, 2018 · US
Development of retarded acid system
US-2018320063-A1 · Nov 8, 2018 · US
Methods of using drilling fluid compositions with enhanced rheology
US-2018320050-A1 · Nov 8, 2018 · US
Dispersant for carbon fibers, carbon fiber dispersion composition, and method for manufacturing carbon fiber sheet
US-2018313037-A1 · Nov 1, 2018 · US
Dispersant in cement formulations for oil and gas wells
US-2018312439-A1 · Nov 1, 2018 · US
Dispersing agent for agrochemicals and fluid dispersion using the same
US-10111421-B2 · Oct 30, 2018 · US
Dispersant in cement formulations for oil and gas wells
US-2018282216-A1 · Oct 4, 2018 · US
Synthesis of monoethers of sugar comprising a long alkyl chain and uses thereof as a surfactant
US-2018265533-A1 · Sep 20, 2018 · US
Method for manufacturing emulsion
US-10058827-B2 · Aug 28, 2018 · US
Spacer fluids and cement slurries that include surfactants
US-2018223168-A1 · Aug 9, 2018 · US
Emulsified drilling fluids and methods of making and use thereof
US-2018223164-A1 · Aug 9, 2018 · US
Spacer fluid compositions that include surfactants
US-2018223169-A1 · Aug 9, 2018 · US
Anti-bit balling drilling fluids, and methods of making and use thereof
US-2018223160-A1 · Aug 9, 2018 · US
Enhanced filtration control packages, wellbore servicing fluids utilizing the same, and methods of maintaining the structure of a wellbore
US-2018223156-A1 · Aug 9, 2018 · US
Development of anti-bit balling fluids
US-2018223162-A1 · Aug 9, 2018 · US
Lubricants for water-based drilling fluids
US-2018223153-A1 · Aug 9, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K23/42?
- CPC C09K23/42 is the Cooperative Patent Classification code for “Ethers, e.g. polyglycol ethers of alcohols or phenols.”
- How many patents are filed under CPC C09K23/42 (Ethers, e.g. polyglycol ethers of alcohols or phenols)?
- Our database includes 205 publications tagged with this CPC code.
- Is patent activity under CPC C09K23/42 growing?
- Publication counts under this code: 10 in 2024 vs 12 in 2025 (latest complete years).