Alkyl lactone-derived corrosion inhibitors
US-12516237-B2 · Jan 6, 2026 · US
Esters of carboxylic acids
Esters of carboxylic acids · 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 | C23F11/128 |
| Official title | {Esters of carboxylic acids} |
| Display label | Esters of carboxylic acids |
| Total patents | 40 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 4 |
| 2020 | 6 |
| 2021 | 5 |
| 2022 | 5 |
| 2023 | 3 |
| 2024 | 5 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Amino acid derivatives and sulfur derivatives as biodegradable corrosion inhibitors
US-2025188618-A1 · Jun 12, 2025 · US
Corrosion inhibitor
US-2025109343-A1 · Apr 3, 2025 · US
Synergistic corrosion inhibitor blends
US-2025034447-A1 · Jan 30, 2025 · US
Identification and characterization of novel corrosion inhibitor molecules
US-12152164-B2 · Nov 26, 2024 · US
Synergistic corrosion inhibitor blends
US-12139662-B2 · Nov 12, 2024 · US
Formulation for corrosion inhibition
US-11905604-B2 · Feb 20, 2024 · US
Compositions and methods for metal wear loss inhibition
US-2024044016-A1 · Feb 8, 2024 · US
Identification and characterization of novel corrosion inhibitor molecules
US-2024002675-A1 · Jan 4, 2024 · US
Synergistic corrosion inhibitor blends
US-2023295486-A1 · Sep 21, 2023 · US
Identification and characterization of novel corrosion inhibitor molecules
US-11732143-B2 · Aug 22, 2023 · US
Alkyl lactone-derived corrosion inhibitors
US-2023092519-A1 · Mar 23, 2023 · US
Alkyl lactone-derived corrosion inhibitors
US-11459498-B2 · Oct 4, 2022 · US
Identification and characterization of novel corrosion inhibitor molecules
US-2022267612-A1 · Aug 25, 2022 · US
Identification and characterization of novel corrosion inhibitor molecules
US-11352507-B2 · Jun 7, 2022 · US
Mitigating internal corrosion of crude oil transportation pipeline
US-11286571-B2 · Mar 29, 2022 · US
Temporary corrosion protection layer
US-11261514-B2 · Mar 1, 2022 · US
Metal corrosion inhibitor
US-11168402-B2 · Nov 9, 2021 · US
Alkyl lactone-derived corrosion inhibitors
US-2021246360-A1 · Aug 12, 2021 · US
A formulation for corrosion inhibition
US-2021180193-A1 · Jun 17, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C23F11/128?
- CPC C23F11/128 is the Cooperative Patent Classification code for “Esters of carboxylic acids.”
- How many patents are filed under CPC C23F11/128 (Esters of carboxylic acids)?
- Our database includes 40 publications tagged with this CPC code.
- Is patent activity under CPC C23F11/128 growing?
- Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).