Positive electrode active material, electrode, and battery
US-2026100353-A1 · Apr 9, 2026 · US
Chemistry & Metallurgy
Chemistry & Metallurgy · 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 | C01B25/451 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 43 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 2 |
| 2017 | 7 |
| 2018 | 4 |
| 2019 | 7 |
| 2020 | 4 |
| 2021 | 2 |
| 2023 | 6 |
| 2025 | 6 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for recovering phosphorus based on cyclic hydrothermal carbonization of wetland plants
US-2025382237-A1 · Dec 18, 2025 · US
Method for recovering phosphorus based on cyclic hydrothermal carbonization of wetland plants
US-12497340-B1 · Dec 16, 2025 · US
Preparation method for ammonium manganese iron phosphate, and lithium manganese iron phosphate and use thereof
US-2025214841-A1 · Jul 3, 2025 · US
Method for recovering phosphorus from sludge rich in chemical phosphorus precipitates using high-protein biomass waste
US-12304842-B2 · May 20, 2025 · US
Ammonium manganese iron phosphate precursor, lithium manganese iron phosphate positive electrode active material, preparation method thereof, and secondary battery
US-2025083961-A1 · Mar 13, 2025 · US
Ferric phosphate, preparation method thereof, and use thereof
US-2025074773-A1 · Mar 6, 2025 · US
Preparation method and application of iron phosphate
US-2023322558-A1 · Oct 12, 2023 · US
High power electrode materials
US-2023253561-A1 · Aug 10, 2023 · US
Nutrient extraction and recovery device for isolation and separation of target products from animal produced waste streams
US-11697624-B2 · Jul 11, 2023 · US
Method for preparing a vanadium phosphate
US-11655151-B2 · May 23, 2023 · US
High power electrode materials
US-11652207-B2 · May 16, 2023 · US
Method for recovering phosphorus from sludge rich in chemical phosphorus precipitates using high-protein biomass waste
US-2023008207-A1 · Jan 12, 2023 · US
Phosphorus extraction and recovery system (PEARS)
US-11104617-B2 · Aug 31, 2021 · US
Method for preparing a vanadium phosphate
US-2021147236-A1 · May 20, 2021 · US
Process for the treatment of a phosphite-containing waste stream
US-2020354304-A1 · Nov 12, 2020 · US
High efficiency continuous-flow production of radioisotopes
US-10804000-B2 · Oct 13, 2020 · US
Phosphorus extraction and recovery system (pears)
US-2020079699-A1 · Mar 12, 2020 · US
High power electrode materials
US-2020052298-A1 · Feb 13, 2020 · US
High power electrode materials
US-10522833-B2 · Dec 31, 2019 · US
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B25/451?
- CPC C01B25/451 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C01B25/451 (Chemistry & Metallurgy)?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC C01B25/451 growing?
- Publication counts under this code: 6 in 2023 vs 6 in 2025 (latest complete years).