Hydrogenation process of oxime derivatives
US-12491503-B2 · Dec 9, 2025 · US
having oxygen atoms of hydroxylamino groups etherified · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C07C239/20 |
| Official title | having oxygen atoms of hydroxylamino groups etherified |
| Display label | having oxygen atoms of hydroxylamino groups etherified |
| Total patents | 61 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 12 |
| 2017 | 8 |
| 2018 | 6 |
| 2019 | 4 |
| 2020 | 4 |
| 2021 | 6 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 5 |
| 2025 | 4 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12491503-B2 · Dec 9, 2025 · US
US-2025122147-A1 · Apr 17, 2025 · US
US-2025066284-A1 · Feb 27, 2025 · US
US-2024246901-A1 · Jul 25, 2024 · US
US-2024199521-A1 · Jun 20, 2024 · US
US-2024124938-A1 · Apr 18, 2024 · US
US-11912647-B2 · Feb 27, 2024 · US
US-11866394-B2 · Jan 9, 2024 · US
US-11814336-B2 · Nov 14, 2023 · US
US-11439721-B2 · Sep 13, 2022 · US
US-11414411-B2 · Aug 16, 2022 · US
US-2022106263-A1 · Apr 7, 2022 · US
US-2021387173-A1 · Dec 16, 2021 · US
US-2021363098-A1 · Nov 25, 2021 · US
US-2021355079-A1 · Nov 18, 2021 · US
US-11059775-B2 · Jul 13, 2021 · US
US-2021139415-A1 · May 13, 2021 · US
US-10899713-B2 · Jan 26, 2021 · US
US-2020255289-A1 · Aug 13, 2020 · US
US-2020239461-A1 · Jul 30, 2020 · US
Answers are generated from the same data shown on this page.