Imidazoline-sugar conjugate compositions and methods for inhibiting corrosion
US-2025369124-A1 · Dec 4, 2025 · US
Radicals substituted by nitrogen atoms
Radicals substituted by nitrogen atoms · 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 | C07D233/16 |
| Official title | Radicals substituted by nitrogen atoms |
| Display label | Radicals substituted by nitrogen atoms |
| Total patents | 39 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 4 |
| 2017 | 1 |
| 2018 | 5 |
| 2019 | 9 |
| 2020 | 7 |
| 2021 | 1 |
| 2022 | 5 |
| 2023 | 2 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Modulators of g protein-coupled receptor 88
US-2025367158-A1 · Dec 4, 2025 · US
Maleated fatty imidazoline derivatives for corrosion inhibitors
US-2025109503-A1 · Apr 3, 2025 · US
Mixed amide ester containing lipids for use in lipid nanoparticles
US-2025025427-A1 · Jan 23, 2025 · US
Multipurpose imidazoline-based process chemicals
US-2025002785-A1 · Jan 2, 2025 · US
Bioactive phenolate ionic complexes
US-2023234934-A1 · Jul 27, 2023 · US
Manufacture of absorbent paper with low charge density imidazolinium containing debonder compositions
US-11542662-B2 · Jan 3, 2023 · US
Aromatic sulfonamide derivatives
US-11524938-B2 · Dec 13, 2022 · US
Enamine compounds for absorbance of electromagnetic energy
US-11512042-B2 · Nov 29, 2022 · US
Mu opioid receptor modulators
US-11484525-B2 · Nov 1, 2022 · US
Aromatic sulfonamide derivatives
US-2022324807-A1 · Oct 13, 2022 · US
Zwitterionic imidazolinium surfactant and use in the manufacture of absorbent paper
US-11408127-B2 · Aug 9, 2022 · US
Mu opioid receptor modulators
US-2021052548-A1 · Feb 25, 2021 · US
Aromatic sulfonamide derivatives
US-10844016-B2 · Nov 24, 2020 · US
Zwitterionic Imidazolinium Surfactant and Use in the Manufacture of Absorbent Paper
US-2020283960-A1 · Sep 10, 2020 · US
MU opioid receptor modulators
US-10702498-B2 · Jul 7, 2020 · US
Zwitterionic imidazolinium surfactant and use in the manufacture of absorbent paper
US-10697123-B2 · Jun 30, 2020 · US
Manufacture of Absorbent Paper With Low Charge Density Imidazolinium Containing Debonder Compositions
US-2020199819-A1 · Jun 25, 2020 · US
Manufacture of absorbent paper with low charge density imidazolinium containing debonder compositions
US-10669673-B2 · Jun 2, 2020 · US
Compounds and method for enhanced oil recovery using sulfur surfactants
US-10577530-B2 · Mar 3, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07D233/16?
- CPC C07D233/16 is the Cooperative Patent Classification code for “Radicals substituted by nitrogen atoms.”
- How many patents are filed under CPC C07D233/16 (Radicals substituted by nitrogen atoms)?
- Our database includes 39 publications tagged with this CPC code.
- Is patent activity under CPC C07D233/16 growing?
- Publication counts under this code: 2 in 2023 vs 5 in 2025 (latest complete years).