Transition metal chelating beads
US-12385907-B2 · Aug 12, 2025 · US
without replacement of the other oxygen atom of the carboxyl group, e.g. hydroxamic acids · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C07C259/04 |
| Official title | without replacement of the other oxygen atom of the carboxyl group, e.g. hydroxamic acids |
| Display label | without replacement of the other oxygen atom of the carboxyl group, e.g. hydroxamic acids |
| Total patents | 21 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 3 |
| 2017 | 8 |
| 2018 | 3 |
| 2020 | 2 |
| 2022 | 2 |
| 2025 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12385907-B2 · Aug 12, 2025 · US
US-11426400-B2 · Aug 30, 2022 · US
US-2022009963-A1 · Jan 13, 2022 · US
US-2020352957-A1 · Nov 12, 2020 · US
US-10660902-B2 · May 26, 2020 · US
US-10053417-B2 · Aug 21, 2018 · US
US-2018194718-A1 · Jul 12, 2018 · US
US-2018153902-A1 · Jun 7, 2018 · US
US-9840460-B2 · Dec 12, 2017 · US
US-2017327459-A1 · Nov 16, 2017 · US
US-9782417-B2 · Oct 10, 2017 · US
US-9688616-B2 · Jun 27, 2017 · US
US-2017166517-A1 · Jun 15, 2017 · US
US-9656952-B2 · May 23, 2017 · US
US-9604914-B2 · Mar 28, 2017 · US
US-2017015619-A1 · Jan 19, 2017 · US
US-9428457-B2 · Aug 30, 2016 · US
US-2016220580-A1 · Aug 4, 2016 · US
US-2016159733-A1 · Jun 9, 2016 · US
US-2015376128-A1 · Dec 31, 2015 · US