Acridine compound
US-2025129029-A1 · Apr 24, 2025 · US
with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the ring system · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C07D219/04 |
| Official title | with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the ring system |
| Display label | with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the ring system |
| Total patents | 34 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 4 |
| 2017 | 4 |
| 2018 | 4 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 5 |
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-2025129029-A1 · Apr 24, 2025 · US
US-12171755-B2 · Dec 24, 2024 · US
US-11789025-B2 · Oct 17, 2023 · US
US-2023278960-A1 · Sep 7, 2023 · US
US-11581495-B2 · Feb 14, 2023 · US
US-11532790-B2 · Dec 20, 2022 · US
US-2022370434-A1 · Nov 24, 2022 · US
US-11444248-B2 · Sep 13, 2022 · US
US-2022216428-A1 · Jul 7, 2022 · US
US-2022081397-A1 · Mar 17, 2022 · US
US-2021177827-A1 · Jun 17, 2021 · US
US-10969394-B2 · Apr 6, 2021 · US
US-2021072254-A1 · Mar 11, 2021 · US
US-2020268897-A1 · Aug 27, 2020 · US
US-2020044156-A1 · Feb 6, 2020 · US
US-10525021-B2 · Jan 7, 2020 · US
US-2019346454-A1 · Nov 14, 2019 · US
US-10370351-B2 · Aug 6, 2019 · US
US-2019071416-A1 · Mar 7, 2019 · US
US-10056549-B2 · Aug 21, 2018 · US
Answers are generated from the same data shown on this page.