Compound, method for manufacturing the compound, and composition for forming organic film
US-2019390000-A1 · Dec 26, 2019 · US
Diphenylamines
Diphenylamines · 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 | C07C211/55 |
| Official title | Diphenylamines |
| Display label | Diphenylamines |
| Total patents | 112 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 13 |
| 2017 | 17 |
| 2018 | 12 |
| 2019 | 9 |
| 2020 | 10 |
| 2021 | 8 |
| 2022 | 7 |
| 2023 | 8 |
| 2024 | 10 |
| 2025 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Non-Coordinating Anion Type Activators Containing Cation Having Large Alkyl Groups
US-2019330139-A1 · Oct 31, 2019 · US
Process to Make Non-Coordinating Anion Type Activators in Aliphatic and Alicyclic Hydrocarbon Solvents
US-2019330246-A1 · Oct 31, 2019 · US
Non-Coordinating Anion Type Activators Containing Cation having Branched Alkyl Groups
US-2019330392-A1 · Oct 31, 2019 · US
Aromatic amine compound, organic electroluminescent element and electronic device
US-10411192-B2 · Sep 10, 2019 · US
Method for coupling a first compound to a second compound
US-2019077744-A1 · Mar 14, 2019 · US
Electroactive materials
US-10199577-B2 · Feb 5, 2019 · US
Amine-based compound and organic light-emitting device including the same
US-10193073-B2 · Jan 29, 2019 · US
Adenylyl cyclase inhibitors for neuropathic and inflammatory pain
US-10144700-B2 · Dec 4, 2018 · US
Organic electroluminescence device and amine compound for organic electroluminescence device
US-2018331290-A1 · Nov 15, 2018 · US
Adenylyl cyclase inhibitors for neuropathic and inflammatory pain
US-10100001-B2 · Oct 16, 2018 · US
Rubber composition, tire, bisanilino compound, and anti-aging agent
US-10066080-B2 · Sep 4, 2018 · US
Rubber composition, tire, amine compound, and anti-aging agent
US-10059829-B2 · Aug 28, 2018 · US
Adenylyl cyclase inhibitors for neuropathic and inflammatory pain
US-2018230080-A1 · Aug 16, 2018 · US
Composition for anode buffer layer of organic thin film solar cell and organic thin film solar cell
US-10020449-B2 · Jul 10, 2018 · US
Rubber composition, tire, bisphenyldiamine compound, and anti-aging agent
US-10011704-B2 · Jul 3, 2018 · US
Organic light-emitting diode with high efficiency and long lifetime
US-10014479-B2 · Jul 3, 2018 · US
Charge-transporting varnish, and organic electroluminescent element
US-2018151805-A1 · May 31, 2018 · US
Double spiro compound and organic light-emitting element comprising same
US-2018111887-A1 · Apr 26, 2018 · US
Selective alkylation method for producing p, p′-di-alkylated diphenylamine antioxidants
US-9890346-B2 · Feb 13, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C211/55?
- CPC C07C211/55 is the Cooperative Patent Classification code for “Diphenylamines.”
- How many patents are filed under CPC C07C211/55 (Diphenylamines)?
- Our database includes 112 publications tagged with this CPC code.
- Is patent activity under CPC C07C211/55 growing?
- Publication counts under this code: 10 in 2024 vs 8 in 2025 (latest complete years).