Etchant composition
US-12595568-B2 · Apr 7, 2026 · US
containing a multiple nitrogen-to-carbon bond
containing a multiple nitrogen-to-carbon bond · 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 | C23F11/146 |
| Official title | {containing a multiple nitrogen-to-carbon bond} |
| Display label | containing a multiple nitrogen-to-carbon bond |
| Total patents | 30 |
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 | 4 |
| 2016 | 2 |
| 2017 | 3 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 7 |
| 2025 | 6 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Refinery crude distillation unit corrosion inhibitor
US-12570907-B2 · Mar 10, 2026 · US
Corrosion inhibitor composition for wet sour crude
US-12503636-B2 · Dec 23, 2025 · US
Ethoxylated fatty diamine as a corrosion inhibitor for pipelines and storage tanks
US-2025257471-A1 · Aug 14, 2025 · US
Surface enhancement of trivalent chromium conversion coatings and methods thereof
US-2025236958-A1 · Jul 24, 2025 · US
Refinery crude distillation unit corrosion inhibitor
US-2025179373-A1 · Jun 5, 2025 · US
Ethoxylated fatty diamine as a corrosion inhibitor for pipelines and storage tanks
US-12291785-B2 · May 6, 2025 · US
Maleated fatty imidazoline derivatives for corrosion inhibitors
US-2025109503-A1 · Apr 3, 2025 · US
Aqueous formulation of oil-soluble corrosion inhibitor, and preparation method and regeneration method thereof
US-2024368468-A1 · Nov 7, 2024 · US
Corrosion inhibitor composition for wet sour crude
US-2024301275-A1 · Sep 12, 2024 · US
Etchant composition
US-2024295030-A1 · Sep 5, 2024 · US
Deodorant composition suitable for aldehyde-based gas or ketone-based gas
US-12042777-B2 · Jul 23, 2024 · US
Corrosion inhibition compositions and associated methods for inhibiting corrosion on metallic substrates
US-12031058-B2 · Jul 9, 2024 · US
Ethoxylated fatty diamine as a corrosion inhibitor for pipelines and storage tanks
US-2024183038-A1 · Jun 6, 2024 · US
Inhibiting corrosion in gas wells
US-11959016-B2 · Apr 16, 2024 · US
Corrosion inhibition compositions and associated methods for inhibiting corrosion on metallic substrates
US-2023052367-A1 · Feb 16, 2023 · US
Inhibiting corrosion in gas wells
US-2022403224-A1 · Dec 22, 2022 · US
Deodorant composition suitable for aldehyde-based gas or ketone-based gas
US-2021387160-A1 · Dec 16, 2021 · US
Polyisocyanate-based anti-corrosion coating
US-10717880-B2 · Jul 21, 2020 · US
Corrosion inhibition for aqueous systems using a halogenated triazole
US-10407778-B2 · Sep 10, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C23F11/146?
- CPC C23F11/146 is the Cooperative Patent Classification code for “containing a multiple nitrogen-to-carbon bond.”
- How many patents are filed under CPC C23F11/146 (containing a multiple nitrogen-to-carbon bond)?
- Our database includes 30 publications tagged with this CPC code.
- Is patent activity under CPC C23F11/146 growing?
- Publication counts under this code: 7 in 2024 vs 6 in 2025 (latest complete years).