9H-fluorene derivatives or their pharmaceutically acceptable salts
US-12492163-B2 · Dec 9, 2025 · US
having the carbon atom of the carboxamide group bound to an acyclic carbon atom of a carbon skeleton containing six-membered aromatic rings · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C07C233/40 |
| Official title | having the carbon atom of the carboxamide group bound to an acyclic carbon atom of a carbon skeleton containing six-membered aromatic rings |
| Display label | having the carbon atom of the carboxamide group bound to an acyclic carbon atom of a carbon skeleton containing six-membered aromatic rings |
| Total patents | 46 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 4 |
| 2017 | 4 |
| 2018 | 5 |
| 2019 | 5 |
| 2020 | 3 |
| 2021 | 6 |
| 2022 | 8 |
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 4 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12492163-B2 · Dec 9, 2025 · US
US-2025346556-A1 · Nov 13, 2025 · US
US-2025325542-A1 · Oct 23, 2025 · US
US-12384742-B2 · Aug 12, 2025 · US
US-2024226026-A1 · Jul 11, 2024 · US
US-11827583-B2 · Nov 28, 2023 · US
US-2023117233-A1 · Apr 20, 2023 · US
US-11578032-B2 · Feb 14, 2023 · US
US-2022332675-A1 · Oct 20, 2022 · US
US-2022220066-A1 · Jul 14, 2022 · US
US-2022177418-A1 · Jun 9, 2022 · US
US-11319281-B2 · May 3, 2022 · US
US-11312694-B2 · Apr 26, 2022 · US
US-2022033368-A1 · Feb 3, 2022 · US
US-2022009896-A1 · Jan 13, 2022 · US
US-11214556-B1 · Jan 4, 2022 · US
US-11155528-B2 · Oct 26, 2021 · US
US-11111214-B2 · Sep 7, 2021 · US
US-2021122721-A1 · Apr 29, 2021 · US
US-10946098-B2 · Mar 16, 2021 · US
Answers are generated from the same data shown on this page.