Stacked organic electroluminescent device
US-12454538-B2 · Oct 28, 2025 · US
attached in position 4 · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C07D263/40 |
| Official title | attached in position 4 |
| Display label | attached in position 4 |
| Total patents | 17 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 4 |
| 2025 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12454538-B2 · Oct 28, 2025 · US
US-2023348363-A1 · Nov 2, 2023 · US
US-11673869-B2 · Jun 13, 2023 · US
US-11667602-B2 · Jun 6, 2023 · US
US-2023078576-A1 · Mar 16, 2023 · US
US-2022380325-A1 · Dec 1, 2022 · US
US-2022336768-A1 · Oct 20, 2022 · US
US-2022304984-A1 · Sep 29, 2022 · US
US-11352333-B2 · Jun 7, 2022 · US
US-2021323934-A1 · Oct 21, 2021 · US
US-2021317093-A1 · Oct 14, 2021 · US
US-11059795-B2 · Jul 13, 2021 · US
US-10844025-B2 · Nov 24, 2020 · US
US-10822315-B2 · Nov 3, 2020 · US
US-2019210982-A1 · Jul 11, 2019 · US
US-2019177285-A1 · Jun 13, 2019 · US
US-9382218-B2 · Jul 5, 2016 · US