Polydentate organic ligand, metallo-supramolecular polymer, polymer film and preparation method thereof
US-12492190-B2 · Dec 9, 2025 · US
by substitution of hydrogen atoms by amino groups
by substitution of hydrogen atoms by amino groups · 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 | C07C209/02 |
| Official title | by substitution of hydrogen atoms by amino groups |
| Display label | by substitution of hydrogen atoms by amino groups |
| Total patents | 43 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 7 |
| 2017 | 8 |
| 2018 | 1 |
| 2019 | 5 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Enantioselective c-h amination with iron phthalocyanine and diammonium template catalysts
US-2025352988-A1 · Nov 20, 2025 · US
Method and system for preparing diphenylamine and phenothiazine from aniline
US-2025320176-A1 · Oct 16, 2025 · US
Polydentate organic ligand, metallo-supramolecular polymer, polymer film and preparation method thereof
US-2025236606-A1 · Jul 24, 2025 · US
Method for selectively and continuously producing 2-methylpyridine and diphenylamine from aniline
US-2024425455-A1 · Dec 26, 2024 · US
Facile direct amination and alkylamination of carbon nanotubes
US-2024417367-A1 · Dec 19, 2024 · US
Method for preparing benzyl amine compound
US-11873265-B2 · Jan 16, 2024 · US
Systems and methods for processing shale gas
US-2024009648-A1 · Jan 11, 2024 · US
Ion-based methods for stabilizing and improving porous metal-organic framework (mof) materials for water harvesting from air and related applications
US-2023416282-A1 · Dec 28, 2023 · US
Amination catalyst and preparation and use thereof
US-2023381757-A1 · Nov 30, 2023 · US
Nitration
US-11655203-B2 · May 23, 2023 · US
Continuous flow processes for making bicyclic compounds
US-11339103-B2 · May 24, 2022 · US
Process for the continuous preparation of 1,2-propylene diamine (1,2-PDA) and dimethyldiethylene triamine (DMDETA)
US-11274072-B2 · Mar 15, 2022 · US
Selective terminal functionalization of alkanes
US-2022024840-A1 · Jan 27, 2022 · US
Nitration
US-2022009875-A1 · Jan 13, 2022 · US
Method for preparing benzyl amine compound
US-2021238121-A1 · Aug 5, 2021 · US
Direct C—H amination and aza-annulation
US-10995056-B2 · May 4, 2021 · US
Continuous flow processes for making bicyclic compounds
US-2021061730-A1 · Mar 4, 2021 · US
Process for the continuous preparation of 1,2-propylene diamine (1,2-pda) and dimethyldiethylene triamine (dmdeta)
US-2020385332-A1 · Dec 10, 2020 · US
Metal-organic frameworks containing nitrogen-donor ligands for efficient catalytic organic transformations
US-10647733-B2 · May 12, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C209/02?
- CPC C07C209/02 is the Cooperative Patent Classification code for “by substitution of hydrogen atoms by amino groups.”
- How many patents are filed under CPC C07C209/02 (by substitution of hydrogen atoms by amino groups)?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC C07C209/02 growing?
- Publication counts under this code: 4 in 2024 vs 4 in 2025 (latest complete years).