Method for producing aromatic heterocyclic ring-substituted difluoroacetic acid derivative
US-12559460-B2 · Feb 24, 2026 · 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 ring carbon atoms · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C07D215/16 |
| 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 ring carbon atoms |
| 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 ring carbon atoms |
| Total patents | 20 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 1 |
| 2026 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12559460-B2 · Feb 24, 2026 · US
US-2023133581-A1 · May 4, 2023 · US
US-2022380311-A1 · Dec 1, 2022 · US
US-2022356205-A1 · Nov 10, 2022 · US
US-11185074-B2 · Nov 30, 2021 · US
US-10800742-B2 · Oct 13, 2020 · US
US-2020281201-A1 · Sep 10, 2020 · US
US-10266496-B2 · Apr 23, 2019 · US
US-10214491-B2 · Feb 26, 2019 · US
US-2018230102-A1 · Aug 16, 2018 · US
US-2018118688-A1 · May 3, 2018 · US
US-9802948-B2 · Oct 31, 2017 · US
US-2017107227-A1 · Apr 20, 2017 · US
US-9340510-B2 · May 17, 2016 · US
US-2016075657-A1 · Mar 17, 2016 · US
US-9072734-B2 · Jul 7, 2015 · US
US-9067928-B2 · Jun 30, 2015 · US
US-9029394-B2 · May 12, 2015 · US
US-9023866-B2 · May 5, 2015 · US
US-9023867-B2 · May 5, 2015 · US