Heterocyclic compound and organic light-emitting device
US-12520720-B2 · Jan 6, 2026 · US
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in which the condensed system contains two hetero rings
in which the condensed system contains two hetero 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 | C07D491/02 |
| Official title | in which the condensed system contains two hetero rings |
| Display label | in which the condensed system contains two hetero rings |
| Total patents | 22 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 6 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cyclopentapyrrole orexin receptor agonists
US-12497362-B2 · Dec 16, 2025 · US
Fluorescent dyes
US-11807643-B2 · Nov 7, 2023 · US
Cyclopentapyrrole orexin receptor agonists
US-2023257348-A1 · Aug 17, 2023 · US
Fluorescent dyes
US-2022017531-A1 · Jan 20, 2022 · US
Substituted thiohydantoin derivatives as androgen receptor antagonists
US-10981926-B2 · Apr 20, 2021 · US
Substituted Thiohydantoin Derivatives As Androgen Receptor Antagonists
US-2020109150-A1 · Apr 9, 2020 · US
Heterocyclic compound and organic light-emitting device
US-2020083458-A1 · Mar 12, 2020 · US
Substituted thiohydantoin derivatives as androgen receptor antagonists
US-10501469-B2 · Dec 10, 2019 · US
Substituted Thiohydantoin Derivatives As Androgen Receptor Antagonists
US-2018298021-A1 · Oct 18, 2018 · US
Substituted thiohydantoin derivatives as androgen receptor antagonists
US-10000502-B2 · Jun 19, 2018 · US
Ron inhibitors for use in preventing and treating bone loss
US-9907791-B2 · Mar 6, 2018 · US
Substituted thiohydantoin derivatives as androgen receptor antagonists
US-2017233401-A1 · Aug 17, 2017 · US
Ron inhibitors for use in preventing and treating bone loss
US-2016367534-A1 · Dec 22, 2016 · US
Gonadotropin releasing hormone receptor antagonists, method for the preparation thereof and pharmaceutical composition comprising the same
US-9481684-B2 · Nov 1, 2016 · US
Imidazo pyridine compounds
US-9394317-B2 · Jul 19, 2016 · US
Materials for organic electroluminescent devices
US-9324954-B2 · Apr 26, 2016 · US
Topoisomerase inhibitors
US-9321781-B2 · Apr 26, 2016 · US
Imidazo[1,2-a]pyridine derivatives: preparation and pharmaceutical applications
US-9266882-B2 · Feb 23, 2016 · US
Imidazo pyridine compounds
US-2015368273-A1 · Dec 24, 2015 · US