Production method for etching liquid composition
US-2026002266-A1 · Jan 1, 2026 · US
Nitrogen-containing compounds
Nitrogen-containing compounds · 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 | C23F11/14 |
| Official title | Nitrogen-containing compounds |
| Display label | Nitrogen-containing compounds |
| Total patents | 52 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 8 |
| 2018 | 8 |
| 2019 | 4 |
| 2020 | 8 |
| 2021 | 4 |
| 2022 | 6 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Corrosion inhibitor compositions and methods of using the compositions to inhibit corrosion
US-2025270706-A1 · Aug 28, 2025 · US
Corrosion inhibitor compositions and methods of using the compositions to inhibit corrosion
US-2025257472-A1 · Aug 14, 2025 · US
Compositions for tungsten etching inhibition
US-12378439-B2 · Aug 5, 2025 · US
Metal member and manufacturing method therefor, etching solution, and metal-resin complex and manufacturing method for metal-resin complex
US-2025154659-A1 · May 15, 2025 · US
Aromatic amine epoxide adducts for corrosion inhibition
US-2024247189-A1 · Jul 25, 2024 · US
Deodorant composition suitable for aldehyde-based gas or ketone-based gas
US-12042777-B2 · Jul 23, 2024 · US
Aromatic amine epoxide adducts for corrosion inhibition
US-11932795-B2 · Mar 19, 2024 · US
Method of Inhibiting Corrosion of a Metal in an Industrial Water System
US-2023416128-A1 · Dec 28, 2023 · US
Oleyl propylenediamine-based corrosion inhibitors
US-11846029-B2 · Dec 19, 2023 · US
Oleyl propylenediamine-based corrosion inhibitors
US-2023193478-A2 · Jun 22, 2023 · US
Composition and method for stabilizing iron compounds in an aqueous environment, and use of composition
US-11498859-B2 · Nov 15, 2022 · US
Oleyl propylenediamine-based corrosion inhibitors
US-2022333252-A1 · Oct 20, 2022 · US
Compositions for tungsten etching inhibition
US-2022267643-A1 · Aug 25, 2022 · US
Oleyl propylenediamine-based corrosion inhibitors
US-11371151-B2 · Jun 28, 2022 · US
Mitigating internal corrosion of crude oil transportation pipeline
US-11286571-B2 · Mar 29, 2022 · US
Coated metal sheet having an amino acid to improve corrosion resistance
US-11236413-B2 · Feb 1, 2022 · US
Deodorant composition suitable for aldehyde-based gas or ketone-based gas
US-2021387160-A1 · Dec 16, 2021 · US
Aromatic amine epoxides for corrosion inhibition
US-2021380883-A1 · Dec 9, 2021 · US
Corrosion inhibition of HCL treatment fluids with environmentally compatible solvent
US-11066749-B2 · Jul 20, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C23F11/14?
- CPC C23F11/14 is the Cooperative Patent Classification code for “Nitrogen-containing compounds.”
- How many patents are filed under CPC C23F11/14 (Nitrogen-containing compounds)?
- Our database includes 52 publications tagged with this CPC code.
- Is patent activity under CPC C23F11/14 growing?
- Publication counts under this code: 3 in 2024 vs 4 in 2025 (latest complete years).