Method for making a di(aminoaryl)fluorene compound
US-12509413-B2 · Dec 30, 2025 · US
by reductive alkylation of ammonia, amines or compounds having groups reducible to amino groups, with carbonyl compounds
by reductive alkylation of ammonia, amines or compounds having groups reducible to amino groups, with carbonyl compounds · 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 | C07C209/24 |
| Official title | by reductive alkylation of ammonia, amines or compounds having groups reducible to amino groups, with carbonyl compounds |
| Display label | by reductive alkylation of ammonia, amines or compounds having groups reducible to amino groups, with carbonyl compounds |
| Total patents | 26 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 4 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for making aldehydes, alcohols, amides, and carboxylic acids from plastic pyrolysis oil
US-12312298-B2 · May 27, 2025 · US
Methods for producing of lipids
US-2024208894-A1 · Jun 27, 2024 · US
Method for making aldehydes, alcohols, amides, and carboxylic acids from plastic pyrolysis oil
US-2024158324-A1 · May 16, 2024 · US
Method for making a di(aminoaryl)fluorene compound
US-2023278948-A1 · Sep 7, 2023 · US
Method for making a di(aminoaryl)fluorene compound
US-11685707-B2 · Jun 27, 2023 · US
Method for Making a Di(aminoaryl)fluorene compound
US-2022064099-A1 · Mar 3, 2022 · US
Composition, method and use
US-11186791-B2 · Nov 30, 2021 · US
Fixed catalyst bed comprising metal foam bodies
US-11090637-B2 · Aug 17, 2021 · US
Stabilization of active metal catalysts at metal-organic framework nodes for highly efficient organic transformations
US-10953393-B2 · Mar 23, 2021 · US
Metal halide crystals having a nanotube structure and methods
US-10947119-B2 · Mar 16, 2021 · US
Methods for making quinolinyldiamines
US-10807997-B2 · Oct 20, 2020 · US
Composition, method and use
US-2020157445-A1 · May 21, 2020 · US
Methods for making quinolinyldiamines
US-2020071344-A1 · Mar 5, 2020 · US
Fixed catalyst bed comprising metal foam bodies
US-2019232257-A1 · Aug 1, 2019 · US
Metal Halide Crystals Having a Nanotube Structure and Methods
US-2019106325-A1 · Apr 11, 2019 · US
Stabilization of active metal catalysts at metal-organic framework nodes for highly efficient organic transformations
US-2018361370-A1 · Dec 20, 2018 · US
Process for removing formaldehyde from a composition comprising glycolaldehyde
US-9796649-B2 · Oct 24, 2017 · US
Regeneration of clay catalysts for alkylation of aromatic rings
US-9744531-B2 · Aug 29, 2017 · US
Telescoping synthesis of 2-methoxymethyl-p-phenylenediamine
US-9695109-B2 · Jul 4, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C209/24?
- CPC C07C209/24 is the Cooperative Patent Classification code for “by reductive alkylation of ammonia, amines or compounds having groups reducible to amino groups, with carbonyl compounds.”
- How many patents are filed under CPC C07C209/24 (by reductive alkylation of ammonia, amines or compounds having groups reducible to amino groups, with carbonyl compounds)?
- Our database includes 26 publications tagged with this CPC code.
- Is patent activity under CPC C07C209/24 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).