Method for recovering transition metals from lithium secondary batteries
US-2026042132-A1 · Feb 12, 2026 · US
containing phosphorus
containing phosphorus · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C22B3/38 |
| Official title | containing phosphorus |
| Display label | containing phosphorus |
| Total patents | 27 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2017 | 2 |
| 2018 | 4 |
| 2019 | 4 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 2 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Metal extractant, separation recovery method of metal ions using metal extractant, and compound
US-2026015371-A1 · Jan 15, 2026 · US
Method for recovering rare earth metal
US-2026015687-A1 · Jan 15, 2026 · US
Separation recovery method of metal ions and acidic metal extractant
US-2025201957-A1 · Jun 19, 2025 · US
Method for manufacturing nickel and cobalt-containing solution from hydroxide containing nickel and cobalt
US-12291762-B2 · May 6, 2025 · US
Integrated lithium extraction
US-12157929-B2 · Dec 3, 2024 · US
Production method for cobalt sulfate
US-2024228320-A1 · Jul 11, 2024 · US
Selective recovery method of vanadium and cesium from waste sulfuric acid vanadium catalyst, and high-quality vanadium aqueous solution and cesium alum produced thereby
US-11807544-B2 · Nov 7, 2023 · US
Alloy treatment method
US-2023167526-A1 · Jun 1, 2023 · US
Selective recovery method of vanadium and cesium from waste sulfuric acid vanadium catalyst, and high-quality vanadium aqueous solution and cesium alum produced thereby
US-2023138828-A1 · May 4, 2023 · US
Method for manufacturing nickel and cobalt-containing solution from hydroxide containing nickel and cobalt
US-2022154308-A1 · May 19, 2022 · US
Integrated lithium extraction
US-2021246529-A1 · Aug 12, 2021 · US
Process for recovering gold from ores
US-11041227-B2 · Jun 22, 2021 · US
Processing method for lithium ion battery scrap
US-10865462-B2 · Dec 15, 2020 · US
Processing method for lithium ion battery scrap
US-10807879-B2 · Oct 20, 2020 · US
Method of refining of scandium oxide from concentrates using solvent extraction
US-10494697-B2 · Dec 3, 2019 · US
A process for recovering gold from ores
US-2019292628-A1 · Sep 26, 2019 · US
Processing method for lithium ion battery scrap
US-2019106768-A1 · Apr 11, 2019 · US
Processing method for lithium ion battery scrap
US-2019084839-A1 · Mar 21, 2019 · US
Methods and systems for controlling impurity metal concentration during metallurgic processes
US-2018340264-A1 · Nov 29, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B3/38?
- CPC C22B3/38 is the Cooperative Patent Classification code for “containing phosphorus.”
- How many patents are filed under CPC C22B3/38 (containing phosphorus)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC C22B3/38 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).