Process for producing methylenebis(cyclohexylamine)
US-2026028306-A1 · Jan 29, 2026 · US
by reduction of six-membered aromatic rings
by reduction of six-membered aromatic rings · 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 | C07C209/72 |
| Official title | by reduction of six-membered aromatic rings |
| Display label | by reduction of six-membered aromatic rings |
| Total patents | 40 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 9 |
| 2017 | 1 |
| 2018 | 4 |
| 2019 | 4 |
| 2020 | 2 |
| 2021 | 4 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 2 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for continuous catalytic hydrogenation of mda
US-2026027535-A1 · Jan 29, 2026 · US
Process for continuous catalytic hydrogenation of mda
US-2026027536-A1 · Jan 29, 2026 · US
Process for continuous catalytic hydrogenation of mda
US-2026028304-A1 · Jan 29, 2026 · US
Process for the hydrogenation of MDA
US-2026028307-A1 · Jan 29, 2026 · US
Process for continuous catalytic hydrogenation of mda
US-2026028305-A1 · Jan 29, 2026 · US
Polydentate organic ligand, metallo-supramolecular polymer, polymer film and preparation method thereof
US-12492190-B2 · Dec 9, 2025 · US
Polydentate organic ligand, metallo-supramolecular polymer, polymer film and preparation method thereof
US-2025236606-A1 · Jul 24, 2025 · US
Hydrogenation of aromatic amines from pu decomposition processes
US-2024317674-A1 · Sep 26, 2024 · US
Catalyst composition for hydrogenating 4,4′-methylenedianiline derivatives and method for preparing 4,4′-methylene bis(cyclohexylamine) derivatives using the same
US-11964259-B2 · Apr 23, 2024 · US
Metal oxide-supported earth-abundant metal catalysts for highly efficient organic transformations
US-11673125-B2 · Jun 13, 2023 · US
Method for manufacturing bis(aminomethyl)cyclohexane
US-2023040356-A1 · Feb 9, 2023 · US
Catalyst composition for hydrogenating 4,4'-methylenedianiline derivatives and method for preparing 4,4'-methylene bis(cyclohexylamine) derivatives using the same
US-2021197177-A1 · Jul 1, 2021 · US
Catalyst composition for hydrogenating 4,4'-methylenedianiline and method for preparing 4,4'-methylene bis(cyclohexylamine) using the same
US-2021197174-A1 · Jul 1, 2021 · US
Eco-friendly process for hydrogenation or/and hydrodeoxygenation of organic compound using hydrous ruthenium oxide catalyst
US-10954185-B2 · Mar 23, 2021 · US
Process for hydrogenating a mixture in the presence of a colorless amine
US-10927066-B2 · Feb 23, 2021 · US
Metal oxide-supported earth-abundant metal catalysts for highly efficient organic transformations
US-2020324276-A1 · Oct 15, 2020 · US
Process for hydrogenating toluenediamine (TDA) tar
US-10662141-B2 · May 26, 2020 · US
Process for hydrogenating toluenediamine (tda) tar
US-2019241501-A1 · Aug 8, 2019 · US
Process for hydrogenating a mixture in the presence of a colorless amine
US-2019210955-A1 · Jul 11, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C209/72?
- CPC C07C209/72 is the Cooperative Patent Classification code for “by reduction of six-membered aromatic rings.”
- How many patents are filed under CPC C07C209/72 (by reduction of six-membered aromatic rings)?
- Our database includes 40 publications tagged with this CPC code.
- Is patent activity under CPC C07C209/72 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).