Materials for organic electroluminescent devices
US-10454041-B2 · Oct 22, 2019 · US
the carbon skeleton being further substituted by halogen atoms or by nitro or nitroso groups
the carbon skeleton being further substituted by halogen atoms or by nitro or nitroso 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 | C07C211/56 |
| Official title | the carbon skeleton being further substituted by halogen atoms or by nitro or nitroso groups |
| Display label | the carbon skeleton being further substituted by halogen atoms or by nitro or nitroso groups |
| Total patents | 138 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 15 |
| 2016 | 8 |
| 2017 | 15 |
| 2018 | 11 |
| 2019 | 16 |
| 2020 | 10 |
| 2021 | 9 |
| 2022 | 9 |
| 2023 | 16 |
| 2024 | 18 |
| 2025 | 8 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Enamide process
US-10435351-B2 · Oct 8, 2019 · US
Organic electroluminescence device and monoamine compound for organic electroluminescence device
US-2019237668-A1 · Aug 1, 2019 · US
1-(cyclopent-2-en-1-yl)-3-(2-hydroxy-3-(arylsulfonyl)phenyl)urea derivatives as CXCR2 inhibitors
US-10336719-B2 · Jul 2, 2019 · US
Active OLED display, method of operating an active OLED display and compound
US-10312464-B2 · Jun 4, 2019 · US
Amine-based compound and organic light-emitting device including the same
US-10290820-B2 · May 14, 2019 · US
Phosphorescent OLED and hole transporting materials for phosphorescent OLEDs
US-10243146-B2 · Mar 26, 2019 · US
Arylamine derivative and use thereof
US-2019084920-A1 · Mar 21, 2019 · US
Fluorine-atom-containing polymer and use thereof
US-10199578-B2 · Feb 5, 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
Method for preparing 3-trifluoromethyl chalcones
US-10160731-B2 · Dec 25, 2018 · US
Flow battery that includes liquid containing mediator
US-2018366748-A1 · Dec 20, 2018 · US
Compounds for electronic devices
US-10141518-B2 · Nov 27, 2018 · US
1-(cyclopent-2-en-1-yl)-3-(2-hydroxy-3-(arylsulfonyl)phenyl)urea derivatives as CXCR2 inhibitors
US-10106515-B2 · Oct 23, 2018 · US
Amine-based compound and organic light-emitting device including the same
US-2018226579-A1 · Aug 9, 2018 · US
Monoamine compound and organic electroluminescence device including the same
US-2018114907-A1 · Apr 26, 2018 · US
Hole transport materials
US-9947872-B2 · Apr 17, 2018 · US
Polymer compound and light emitting element using same
US-9929347-B2 · Mar 27, 2018 · US
Materials for organic electroluminescence devices
US-9893292-B2 · Feb 13, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C211/56?
- CPC C07C211/56 is the Cooperative Patent Classification code for “the carbon skeleton being further substituted by halogen atoms or by nitro or nitroso groups.”
- How many patents are filed under CPC C07C211/56 (the carbon skeleton being further substituted by halogen atoms or by nitro or nitroso groups)?
- Our database includes 138 publications tagged with this CPC code.
- Is patent activity under CPC C07C211/56 growing?
- Publication counts under this code: 18 in 2024 vs 8 in 2025 (latest complete years).