Method for improving efficiency of heat transmission by steam
US-2024328730-A1 · Oct 3, 2024 · US
Amides; N-substituted amides
Amides; N-substituted amides · 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 | C23F11/145 |
| Official title | {Amides; N-substituted amides} |
| Display label | Amides; N-substituted amides |
| Total patents | 75 |
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 | 11 |
| 2018 | 5 |
| 2019 | 6 |
| 2020 | 5 |
| 2021 | 11 |
| 2022 | 4 |
| 2023 | 12 |
| 2024 | 5 |
| 2025 | 12 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Oil and gas field corrosion inhibitor compositions
US-12043794-B2 · Jul 23, 2024 · US
Method for providing corrosion protection to a pressurized water-steam system
US-2024133043-A1 · Apr 25, 2024 · US
Oleyl propylenediamine-based corrosion inhibitors
US-11846029-B2 · Dec 19, 2023 · US
Multiple charged ionic compounds derived from polyamines and compositions thereof and use thereof as reverse emulsion breakers in oil and gas operations
US-2023278949-A1 · Sep 7, 2023 · US
Compositions and methods for corrosion inhibitor monitoring
US-11697761-B2 · Jul 11, 2023 · US
Multiple charged ionic compounds derived from polyamines and compositions thereof and use thereof as reverse emulsion breakers in oil and gas operations
US-11685709-B2 · Jun 27, 2023 · US
Oleyl propylenediamine-based corrosion inhibitors
US-2023193478-A2 · Jun 22, 2023 · US
Novel corrosion inhibition package
US-2023124406-A1 · Apr 20, 2023 · US
Alkyl lactone-derived corrosion inhibitors
US-2023092519-A1 · Mar 23, 2023 · US
Substituted Carboxamide Corrosion Inhibitor Compounds
US-2023064911-A1 · Mar 2, 2023 · US
Corrosion inhibitor for mitigating alkaline carbonate stress corrosion cracking
US-2023053403-A1 · Feb 23, 2023 · US
Hydrocarbon functionalized polyamines for corrosion inhibition
US-2023042309-A1 · Feb 9, 2023 · US
Amidodiamine corrosion inhibitors
US-11542426-B2 · Jan 3, 2023 · US
Corrosion inhibition package
US-11542608-B2 · Jan 3, 2023 · US
Trifunctional amine based corrosion inhibitor compositions
US-11492710-B2 · Nov 8, 2022 · US
Oleyl propylenediamine-based corrosion inhibitors
US-2022333252-A1 · Oct 20, 2022 · US
Alkyl lactone-derived corrosion inhibitors
US-11459498-B2 · Oct 4, 2022 · US
Oleyl propylenediamine-based corrosion inhibitors
US-11371151-B2 · Jun 28, 2022 · US
Novel corrosion inhibitor for various acids
US-2021340427-A1 · Nov 4, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C23F11/145?
- CPC C23F11/145 is the Cooperative Patent Classification code for “Amides; N-substituted amides.”
- How many patents are filed under CPC C23F11/145 (Amides; N-substituted amides)?
- Our database includes 75 publications tagged with this CPC code.
- Is patent activity under CPC C23F11/145 growing?
- Publication counts under this code: 5 in 2024 vs 12 in 2025 (latest complete years).