Organic electroluminescence element, composition, powder, electronic equipment, and novel compound
US-12581850-B2 · Mar 17, 2026 · US
Naphthacenes; Hydrogenated naphthacenes
Naphthacenes; Hydrogenated naphthacenes · 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 | C07C2603/44 |
| Official title | Naphthacenes; Hydrogenated naphthacenes |
| Display label | Naphthacenes; Hydrogenated naphthacenes |
| Total patents | 27 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Tetracycline derivatives
US-2026021119-A1 · Jan 22, 2026 · US
Methods for synthesizing substituted tetracycline compounds
US-2025340507-A1 · Nov 6, 2025 · US
Organic electroluminescence element, composition, powder, electronic equipment, and novel compound
US-2025295024-A1 · Sep 18, 2025 · US
Quantum dot, and ink composition, light-emitting device, optical member, and apparatus including quantum dot
US-12173209-B2 · Dec 24, 2024 · US
Organic compound, light-emitting device, light-emitting apparatus, electronic apparatus, and lighting apparatus
US-11937498-B2 · Mar 19, 2024 · US
Novel organic compound and organic light-emitting device comprising same
US-2024090318-A1 · Mar 14, 2024 · US
Organic electroluminescent devices
US-11778908-B2 · Oct 3, 2023 · US
Compound, resist underlayer film composition including same, and resist underlayer film
US-2023213863-A1 · Jul 6, 2023 · US
Bisbenzofuran-fused 2,8-diaminoindeno[1,2-b]fluorene derivatives and related compounds as materials for organic electroluminescent devices (OLED)
US-11584753-B2 · Feb 21, 2023 · US
Organic electroluminescence element, composition, powder, electronic equipment, and novel compound
US-2022393110-A1 · Dec 8, 2022 · US
Quantum dot, and ink composition, light-emitting device, optical member, and apparatus including quantum dot
US-2022112425-A1 · Apr 14, 2022 · US
Organic compound and organic light-emitting element
US-11196006-B2 · Dec 7, 2021 · US
Organic Compound, Light-Emitting Device, Light-Emitting Apparatus, Electronic Apparatus, and Lighting Apparatus
US-2021119133-A1 · Apr 22, 2021 · US
5,12-dihydrotetracene derivative and organic electroluminescence device using the same
US-10693074-B2 · Jun 23, 2020 · US
Organic compound and organic light-emitting element
US-2020111963-A1 · Apr 9, 2020 · US
Organic electroluminescent devices
US-2020083461-A1 · Mar 12, 2020 · US
Bisbenzofuran-fused 2,8-diaminoindeno[1,2-b]fluorene derivatives and related compounds as materials for organic electroluminescent devices (oled)
US-2019315764-A1 · Oct 17, 2019 · US
5,12-dihydrotetracene derivative and organic electroluminescence device using the same
US-2019229270-A1 · Jul 25, 2019 · US
Method of producing epirubicin and novel production intermediate thereof
US-10301343-B2 · May 28, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C2603/44?
- CPC C07C2603/44 is the Cooperative Patent Classification code for “Naphthacenes; Hydrogenated naphthacenes.”
- How many patents are filed under CPC C07C2603/44 (Naphthacenes; Hydrogenated naphthacenes)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC C07C2603/44 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).