Organic compound and organic electroluminescence device using the same
US-2020109138-A1 · Apr 9, 2020 · US
the condensed ring system contains only four rings
the condensed ring system contains only four rings · 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 | C07C13/66 |
| Official title | the condensed ring system contains only four rings |
| Display label | the condensed ring system contains only four rings |
| Total patents | 105 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 11 |
| 2016 | 9 |
| 2017 | 15 |
| 2018 | 13 |
| 2019 | 11 |
| 2020 | 10 |
| 2021 | 8 |
| 2022 | 10 |
| 2023 | 3 |
| 2024 | 5 |
| 2025 | 6 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compound, method for manufacturing the compound, and composition for forming organic film
US-2019390000-A1 · Dec 26, 2019 · US
Anthracene derivatives, luminescent materials and organic electroluminescent devices
US-10461257-B2 · Oct 29, 2019 · US
Organic compound and organic electroluminescence device using the same
US-10454045-B2 · Oct 22, 2019 · US
Photoelectric conversion element, and imaging element and imaging apparatus including the same
US-2019267545-A1 · Aug 29, 2019 · US
Anthracene derivatives and organic light emitting devices comprising the same
US-10388882-B2 · Aug 20, 2019 · US
5,12-dihydrotetracene derivative and organic electroluminescence device using the same
US-2019229270-A1 · Jul 25, 2019 · US
DNA binding agents with a minor groove binding tail
US-10358439-B2 · Jul 23, 2019 · US
Organic compound and organic electroluminescence device using the same
US-2019198781-A1 · Jun 27, 2019 · US
Organic electroluminescent compound and organic electroluminescent device comprising the same
US-2019131526-A1 · May 2, 2019 · US
Polymer, composition for organic electroluminescent element, organic electroluminescent element, organic EL display device, and organic EL lighting device
US-10270035-B2 · Apr 23, 2019 · US
Organic electroluminescence device and anthracene derivative
US-10217943-B2 · Feb 26, 2019 · US
Compound for organic electroluminescent device
US-10164194-B2 · Dec 25, 2018 · US
Organic electron transport material
US-2018358561-A1 · Dec 13, 2018 · US
Organic electroluminescent element and electronic device
US-10135000-B2 · Nov 20, 2018 · US
Pyrene derivative, organic light-emitting medium, and organic electroluminescent element containing pyrene derivative or organic light-emitting medium
US-2018309058-A1 · Oct 25, 2018 · US
Triphenylene-based materials for organic electroluminescent devices
US-2018269411-A1 · Sep 20, 2018 · US
Dna binding agents with a minor groove binding tail
US-2018251454-A1 · Sep 6, 2018 · US
Organic electronic material and organic electroluminescent device
US-10026901-B2 · Jul 17, 2018 · US
Pyrene derivative, organic light-emitting medium, and organic electroluminescent element containing pyrene derivative or organic light-emitting medium
US-10014476-B2 · Jul 3, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C13/66?
- CPC C07C13/66 is the Cooperative Patent Classification code for “the condensed ring system contains only four rings.”
- How many patents are filed under CPC C07C13/66 (the condensed ring system contains only four rings)?
- Our database includes 105 publications tagged with this CPC code.
- Is patent activity under CPC C07C13/66 growing?
- Publication counts under this code: 5 in 2024 vs 6 in 2025 (latest complete years).