Positive electrode active material using spent battery leachate for secondary battery and method of preparing same
US-2025313917-A1 · Oct 9, 2025 · US
Tervalent phosphorus oxyacids, esters thereof · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C22B3/383 |
| Official title | {Tervalent phosphorus oxyacids, esters thereof} |
| Display label | Tervalent phosphorus oxyacids, esters thereof |
| Total patents | 9 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-2025313917-A1 · Oct 9, 2025 · US
US-11920213-B2 · Mar 5, 2024 · US
US-2023272503-A1 · Aug 31, 2023 · US
US-11299796-B2 · Apr 12, 2022 · US
US-11186895-B2 · Nov 30, 2021 · US
US-10651479-B2 · May 12, 2020 · US
US-2020048737-A1 · Feb 13, 2020 · US
US-2019292630-A1 · Sep 26, 2019 · US
US-2019245216-A1 · Aug 8, 2019 · US