Alkyl ether sulfate surfactants and associated methods of manufacture
US-2026085037-A1 · Mar 26, 2026 · US
Hydrogenosulfates
Hydrogenosulfates · 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 | C07C305/06 |
| Official title | Hydrogenosulfates |
| Display label | Hydrogenosulfates |
| Total patents | 51 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 12 |
| 2017 | 7 |
| 2018 | 7 |
| 2019 | 8 |
| 2020 | 3 |
| 2021 | 4 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Higher secondary alcohol alkoxylate precursor, higher secondary alcohol alkoxylate adduct and higher secondary alkyl ether sulfate ester salt, and methods for producing these
US-12570592-B2 · Mar 10, 2026 · US
Sulfonated and sulfated aryl-alkyl compounds useful as surfactants
US-2025388535-A1 · Dec 25, 2025 · US
Compound and Molded Body Comprising Same
US-2025122144-A1 · Apr 17, 2025 · US
Long-lived redox-active molecules with low redox potential
US-2025118786-A1 · Apr 10, 2025 · US
Ionic liquid and method for producing the same
US-2024360349-A1 · Oct 31, 2024 · US
Materials for organic electroluminescent devices
US-11629126-B2 · Apr 18, 2023 · US
Polyanionic delivery of nucleic acids
US-11427535-B2 · Aug 30, 2022 · US
Biodegradable surfactants and related compositions, methods and systems
US-2021403421-A1 · Dec 30, 2021 · US
PolyAnionic Delivery of Nucleic Acids
US-2021261502-A1 · Aug 26, 2021 · US
Biodegradable surfactants and related compositions, methods and systems
US-11066359-B2 · Jul 20, 2021 · US
Polyanionic delivery of nucleic acids
US-10961184-B2 · Mar 30, 2021 · US
Short hydrophobe anionic surfactants
US-10876038-B2 · Dec 29, 2020 · US
Compounds and method for enhanced oil recovery using sulfur surfactants
US-10577530-B2 · Mar 3, 2020 · US
PolyAnionic Delivery of Nucleic Acids
US-2020017440-A1 · Jan 16, 2020 · US
Compounds and method for enhanced oil recovery using sulfur surfactants
US-2019382644-A1 · Dec 19, 2019 · US
Biodegradable surfactants and related compositions, methods and systems
US-2019359562-A1 · Nov 28, 2019 · US
Compounds and method for enhanced oil recovery using sulfur surfactants
US-2019330515-A1 · Oct 31, 2019 · US
Compounds and method for enhanced oil recovery using sulfur surfactants
US-10435619-B1 · Oct 8, 2019 · US
Compounds and method for enhanced oil recovery using sulfur surfactants
US-10370582-B2 · Aug 6, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C305/06?
- CPC C07C305/06 is the Cooperative Patent Classification code for “Hydrogenosulfates.”
- How many patents are filed under CPC C07C305/06 (Hydrogenosulfates)?
- Our database includes 51 publications tagged with this CPC code.
- Is patent activity under CPC C07C305/06 growing?
- Publication counts under this code: 1 in 2024 vs 3 in 2025 (latest complete years).