Heterocyclic compound and organic light-emitting device
US-12520720-B2 · Jan 6, 2026 · US
in which the condensed system contains two hetero rings · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C07D495/02 |
| Official title | in which the condensed system contains two hetero rings |
| Display label | in which the condensed system contains two hetero rings |
| Total patents | 32 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 4 |
| 2017 | 4 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 5 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 3 |
| 2026 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12520720-B2 · Jan 6, 2026 · US
US-2025304596-A1 · Oct 2, 2025 · US
US-2025282792-A1 · Sep 11, 2025 · US
US-12193325-B2 · Jan 7, 2025 · US
US-2024287076-A1 · Aug 29, 2024 · US
US-11713324-B2 · Aug 1, 2023 · US
US-11572369-B2 · Feb 7, 2023 · US
US-2022315541-A1 · Oct 6, 2022 · US
US-2022135583-A1 · May 5, 2022 · US
US-2021284653-A1 · Sep 16, 2021 · US
US-2021175426-A1 · Jun 10, 2021 · US
US-10941159-B2 · Mar 9, 2021 · US
US-10734131-B2 · Aug 4, 2020 · US
US-10727426-B2 · Jul 28, 2020 · US
US-2020095259-A1 · Mar 26, 2020 · US
US-2020083458-A1 · Mar 12, 2020 · US
US-2020066994-A1 · Feb 27, 2020 · US
US-10336769-B2 · Jul 2, 2019 · US
US-10239886-B2 · Mar 26, 2019 · US
US-2019027701-A1 · Jan 24, 2019 · US
Answers are generated from the same data shown on this page.