Charge transport material, compound, and organic light-emitting element
US-2020399246-A1 · Dec 24, 2020 · US
Chemistry & Metallurgy
Chemistry & Metallurgy · 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 | C07C255/51 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 147 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 9 |
| 2017 | 8 |
| 2018 | 13 |
| 2019 | 6 |
| 2020 | 17 |
| 2021 | 13 |
| 2022 | 24 |
| 2023 | 22 |
| 2024 | 17 |
| 2025 | 7 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Organic molecules for optoelectronic devices
US-2020290941-A1 · Sep 17, 2020 · US
Organic compound and organic light-emitting element
US-2020255358-A1 · Aug 13, 2020 · US
Novel compound and organic light emitting device comprising same
US-2020235304-A1 · Jul 23, 2020 · US
Bimesogenic compounds and mesogenic media
US-10711196-B2 · Jul 14, 2020 · US
Phthalonitrile compound
US-10683261-B2 · Jun 16, 2020 · US
Oxocarbon-, Pseudooxocarbon- and Radialene Compounds and Their Use
US-2020152873-A1 · May 14, 2020 · US
Phthalonitrile compound
US-10640650-B2 · May 5, 2020 · US
Polycyclic compound and organic light emitting device comprising same
US-2020127207-A1 · Apr 23, 2020 · US
Organic compound and organic light-emitting element
US-2020111963-A1 · Apr 9, 2020 · US
Non-aqueous electrolyte additive, and non-aqueous electrolyte for lithium secondary battery comprising the same and lithium secondary battery
US-10601069-B2 · Mar 24, 2020 · US
Oxocarbon-, pseudooxocarbon- and radialene compounds and their use
US-10586926-B2 · Mar 10, 2020 · US
Organic compound, organic light-emitting element, display device, imaging device, electronic device, illumination device, and moving object
US-2020048171-A1 · Feb 13, 2020 · US
Materials for electronic devices
US-10559756-B2 · Feb 11, 2020 · US
Phthalonitrile compound
US-10556859-B2 · Feb 11, 2020 · US
Quinoid compounds and their use in semiconducting matrix materials, electronic and optoelectronic structural elements
US-10431747-B2 · Oct 1, 2019 · US
Materials for electronic devices
US-2019288206-A1 · Sep 19, 2019 · US
Organic compound, and organic light emitting diode and organic light emitting display device including the same
US-10418561-B2 · Sep 17, 2019 · US
Synthetic building blocks for the production of materials for organic electroluminescence devices
US-10407384-B2 · Sep 10, 2019 · US
Compounds and mesogenic media
US-10343982-B2 · Jul 9, 2019 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C255/51?
- CPC C07C255/51 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C07C255/51 (Chemistry & Metallurgy)?
- Our database includes 147 publications tagged with this CPC code.
- Is patent activity under CPC C07C255/51 growing?
- Publication counts under this code: 17 in 2024 vs 7 in 2025 (latest complete years).