Acid Degradable Solid Lipid Nanoparticles
US-2025197348-A1 · Jun 19, 2025 · US
by reduction of nitro groups
by reduction of nitro 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 | C07C209/32 |
| Official title | by reduction of nitro groups |
| Display label | by reduction of nitro groups |
| Total patents | 25 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 1 |
| 2017 | 4 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Two-dimensional coordination polymers
US-12281055-B2 · Apr 22, 2025 · US
Processes for the preparation of 1,2,3,5,6,7-hexahydro-s-indacene derivataives
US-2024400516-A1 · Dec 5, 2024 · US
Method of catalytic hydrogenation and reduction
US-2024278214-A1 · Aug 22, 2024 · US
Process for reducing aromatic nitro compounds with supported catalyst
US-11712680-B2 · Aug 1, 2023 · US
Process for reducing aromatic nitro compounds with supported catalyst
US-2022401927-A1 · Dec 22, 2022 · US
Iron oxide supported rhodium catalyst for nitroarene reduction
US-11452992-B2 · Sep 27, 2022 · US
Two-dimensional coordination polymers
US-11390576-B2 · Jul 19, 2022 · US
Compositions of oligoanilines and methods of making and using
US-2021179545-A1 · Jun 17, 2021 · US
Iron oxide supported rhodium catalyst for nitroarene reduction
US-2020298212-A1 · Sep 24, 2020 · US
Compositions of oligoanilines and methods of making and using
US-2020290954-A1 · Sep 17, 2020 · US
Process for producing isocyanate and at least one further chemical product in an integrated production
US-10618871-B2 · Apr 14, 2020 · US
Use of metal-accumulating plants for the preparation of catalysts that can be used in chemical reactions
US-10463901-B2 · Nov 5, 2019 · US
Process for producing isocyanate and at least one further chemical product in an integrated production
US-2019185419-A1 · Jun 20, 2019 · US
Use of metal-accumulating plants for the preparation of catalysts that can be used in chemical reactions
US-2018015317-A1 · Jan 18, 2018 · US
Halogenated aniline and method for producing same
US-9758468-B2 · Sep 12, 2017 · US
Use of metal-accumulating plants for implementing chemical reactions
US-9744391-B2 · Aug 29, 2017 · US
Halogenated aniline and method for producing same
US-9573881-B2 · Feb 21, 2017 · US
Halogenated aniline and method for producing same
US-2017029361-A1 · Feb 2, 2017 · US
Method and apparatus for denenoxing waste gases from nitration
US-9346012-B2 · May 24, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C209/32?
- CPC C07C209/32 is the Cooperative Patent Classification code for “by reduction of nitro groups.”
- How many patents are filed under CPC C07C209/32 (by reduction of nitro groups)?
- Our database includes 25 publications tagged with this CPC code.
- Is patent activity under CPC C07C209/32 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).