Organic compounds
US-10047031-B2 · Aug 14, 2018 · US
Diamines
Diamines · 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 | C07C211/09 |
| Official title | Diamines |
| Display label | Diamines |
| Total patents | 195 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 21 |
| 2016 | 14 |
| 2017 | 23 |
| 2018 | 22 |
| 2019 | 21 |
| 2020 | 14 |
| 2021 | 19 |
| 2022 | 20 |
| 2023 | 14 |
| 2024 | 12 |
| 2025 | 12 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for preparing a diamine/dicarboxylic acid salt
US-10029977-B2 · Jul 24, 2018 · US
Process for the preparation of a polyamide
US-9850348-B2 · Dec 26, 2017 · US
Compounds and methods for inhibiting corrosion in hydrocarbon processing units
US-9803149-B2 · Oct 31, 2017 · US
Light absorption material and solar cell using the same
US-2017309407-A1 · Oct 26, 2017 · US
Improvements in or relating to organic compounds
US-2017297992-A1 · Oct 19, 2017 · US
4,5-diaminoimidazoles as novel developer-type oxidation dye precursors
US-2017281501-A1 · Oct 5, 2017 · US
Process for the production of polyimide and polyamic ester polymers
US-9777117-B2 · Oct 3, 2017 · US
Phenoxyalkylamine compound
US-9771316-B2 · Sep 26, 2017 · US
Method for producing 1,5-pentamethylenediamine, mutant lysine decarboxylase, method for producing 1,5-pentamethylene diisocyanate and method for producing polyisocyanate composition
US-9765369-B2 · Sep 19, 2017 · US
Novel Polymer and Thermosetting Composition Containing Same
US-2017260330-A1 · Sep 14, 2017 · US
Process for preparing nylon salt and its polymerization
US-2017218122-A1 · Aug 3, 2017 · US
Antifoam molecules and compositions
US-2017218307-A1 · Aug 3, 2017 · US
Compounds and methods for inhibiting corrosion in hydrocarbon processing units
US-2017204339-A9 · Jul 20, 2017 · US
Polymer and thermosetting composition containing same
US-9695284-B2 · Jul 4, 2017 · US
Reductive preparation of tertiary dimethylamines from nitriles
US-9695110-B2 · Jul 4, 2017 · US
Microorganisms and methods for production of 4-hydroxybutyrate, 1,4-butanediol and related compounds
US-2017183694-A1 · Jun 29, 2017 · US
Process for the production of polyimide and polyamic ester polymers
US-2017174837-A1 · Jun 22, 2017 · US
Nonionic surfactant compositions
US-2017158610-A1 · Jun 8, 2017 · US
Process for forming a primary, a secondary or a tertiary amine via a direct amination reaction
US-9663446-B2 · May 30, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C211/09?
- CPC C07C211/09 is the Cooperative Patent Classification code for “Diamines.”
- How many patents are filed under CPC C07C211/09 (Diamines)?
- Our database includes 195 publications tagged with this CPC code.
- Is patent activity under CPC C07C211/09 growing?
- Publication counts under this code: 12 in 2024 vs 12 in 2025 (latest complete years).