Exfoliated layer dispersion of layered compound, and transparent substrate using same
US-12091555-B2 · Sep 17, 2024 · US
Alkyl sulfonates or sulfuric acid ester salts derived from monohydric alcohols
Alkyl sulfonates or sulfuric acid ester salts derived from monohydric alcohols · 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 | C09K23/02 |
| Official title | Alkyl sulfonates or sulfuric acid ester salts derived from monohydric alcohols |
| Display label | Alkyl sulfonates or sulfuric acid ester salts derived from monohydric alcohols |
| Total patents | 75 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 4 |
| 2017 | 6 |
| 2018 | 7 |
| 2019 | 1 |
| 2020 | 9 |
| 2021 | 7 |
| 2022 | 10 |
| 2023 | 8 |
| 2024 | 9 |
| 2025 | 9 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Surfactant composition for foam sand
US-2024181522-A1 · Jun 6, 2024 · US
Polymerizable surfactants having water whitening resistance and methods for use
US-2024110102-A1 · Apr 4, 2024 · US
Polymerizable surfactants having water whitening resistance and methods for use
US-11884867-B2 · Jan 30, 2024 · US
Aqueous emulsifier package with anionic surfactant for fuel emulsion
US-2023416627-A1 · Dec 28, 2023 · US
Surfactant composition
US-11795244-B2 · Oct 24, 2023 · US
Alkoxylated secondary alcohol sulfates
US-11718581-B2 · Aug 8, 2023 · US
Composition with Mixed C13-C14 Alcohols and Surfactants
US-2023242819-A1 · Aug 3, 2023 · US
Sulfuric acid ester or salt thereof, and surfactant
US-11708324-B2 · Jul 25, 2023 · US
Polyanionic surfactants and methods of making and using thereof
US-2023183578-A1 · Jun 15, 2023 · US
Polyanionic surfactants and methods of making and using thereof
US-2023183577-A1 · Jun 15, 2023 · US
Compositions and methods for the recovery of oil under harsh conditions
US-2023097814-A1 · Mar 30, 2023 · US
Olefin sulfonates
US-2022363979-A1 · Nov 17, 2022 · US
Surfactant Compositions Comprising Solid Substrates For Subterranean Well Operations
US-2022356391-A1 · Nov 10, 2022 · US
Surfactant compositions comprising solid substrates for subterranean well operations
US-11434414-B2 · Sep 6, 2022 · US
Polymerizable surfactants having water whitening resistance and methods for use
US-2022235272-A1 · Jul 28, 2022 · US
Anti-freezing dispersant and manufacturing process thereof
US-2022235273-A1 · Jul 28, 2022 · US
Stabilizer concentrates for wax dispersions
US-2022160592-A1 · May 26, 2022 · US
Alkoxylated secondary alcohol sulfates
US-11339123-B2 · May 24, 2022 · US
Exfoliated layer dispersion of layered compound, and transparent substrate using same
US-2022089880-A1 · Mar 24, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K23/02?
- CPC C09K23/02 is the Cooperative Patent Classification code for “Alkyl sulfonates or sulfuric acid ester salts derived from monohydric alcohols.”
- How many patents are filed under CPC C09K23/02 (Alkyl sulfonates or sulfuric acid ester salts derived from monohydric alcohols)?
- Our database includes 75 publications tagged with this CPC code.
- Is patent activity under CPC C09K23/02 growing?
- Publication counts under this code: 9 in 2024 vs 9 in 2025 (latest complete years).