Polyanionic surfactants and methods of making and using thereof
US-12577451-B2 · Mar 17, 2026 · US
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containing carboxyl groups bound to the carbon skeleton
containing carboxyl groups bound to the carbon skeleton · 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 | C07C309/22 |
| Official title | containing carboxyl groups bound to the carbon skeleton |
| Display label | containing carboxyl groups bound to the carbon skeleton |
| Total patents | 21 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 3 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 4 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Polyanionic surfactants and methods of making and using thereof
US-12480036-B2 · Nov 25, 2025 · US
Polyethyleneamine salts of sulphonyl oleic acid and dual functional hydrocarbon fuel additive composition thereof
US-12359141-B2 · Jul 15, 2025 · US
Branched amino acid surfactants
US-12351547-B2 · Jul 8, 2025 · US
Purification method for alpha-sulfo fatty acid salt
US-2025027009-A1 · Jan 23, 2025 · US
Polyethyleneamine salts of sulphonyl oleic acid and dual functional hydrocarbon fuel additive composition thereof
US-2024417638-A1 · Dec 19, 2024 · US
Systems and processes for producing organic acids directly from beta-lactones
US-12152004-B2 · Nov 26, 2024 · US
Branched amino acid surfactants
US-2024174602-A1 · May 30, 2024 · US
Branched amino acid surfactants
US-11897834-B2 · Feb 13, 2024 · US
Polyanionic surfactants and methods of making and using thereof
US-2023332037-A1 · Oct 19, 2023 · US
Polyanionic surfactants and methods of making and using thereof
US-2023257644-A1 · Aug 17, 2023 · US
Actinic ray-sensitive or radiation-sensitive resin composition, actinic ray-sensitive or radiation-sensitive film, pattern forming method, and method for manufacturing electronic device
US-2022206386-A1 · Jun 30, 2022 · US
Branched amino acid surfactants
US-2022009881-A1 · Jan 13, 2022 · US
Systems and processes for producing organic acids directly from beta-lactones
US-2021221762-A1 · Jul 22, 2021 · US
Systems and Processes for Producing Organic Acids Direct from Beta-Lactones
US-2018305286-A1 · Oct 25, 2018 · US
Photoacid-generating compound and associated polymer, photoresist composition, and method of forming a photoresist relief image
US-10088749-B2 · Oct 2, 2018 · US
Photoacid-generating compound and associated polymer, photoresist composition, and method of forming a photoresist relief image
US-2018095363-A1 · Apr 5, 2018 · US
Salt, resin, resist composition and method for producing resist pattern
US-9809669-B2 · Nov 7, 2017 · US
Salt, resin, resist composition and method for producing resist pattern
US-2016145205-A1 · May 26, 2016 · US
Composition containing a dibenzoylmethane screening agent and a hydrophilic or water-soluble merocyanin uv-screening agent; process for photostabilizing the dibenzoylmethane screening agent
US-2016058682-A1 · Mar 3, 2016 · US