Positive-electrode active material, preparing method thereof, and battery
US-2025388483-A1 · Dec 25, 2025 · US
Pyrophosphates
Pyrophosphates · 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 | C01B25/42 |
| Official title | Pyrophosphates |
| Display label | Pyrophosphates |
| Total patents | 40 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 5 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 3 |
| 2020 | 2 |
| 2021 | 5 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Sodium iron phosphate pyrophosphate positive-electrode material and preparation method thereof, battery, and energy storage device
US-2025391860-A1 · Dec 25, 2025 · US
Positive electrode material and preparation method therefor, electrode, and battery
US-2025391857-A1 · Dec 25, 2025 · US
Positive electrode material and preparation method therefor, positive electrode, and battery
US-2025391858-A1 · Dec 25, 2025 · US
Positive electrode material and preparation method therefor, positive electrode, and battery
US-2025391859-A1 · Dec 25, 2025 · US
Synthesis of nanostructured zirconium phosphate
US-2025361145-A1 · Nov 27, 2025 · US
Effective calcium phosphate radiative cooling materials
US-2025353747-A1 · Nov 20, 2025 · US
Plate-like titanium pyrophosphate and method for producing the same
US-2024182305-A1 · Jun 6, 2024 · US
Stannous pyrophosphate, and methods of producing the same
US-2024150175-A1 · May 9, 2024 · US
Production method of lithium cobalt pyrophosphate, and production method of solid-state battery
US-2023216048-A1 · Jul 6, 2023 · US
Positive electrode material for secondary battery, method for manufacturing the same, and lithium-ion secondary battery
US-11670773-B2 · Jun 6, 2023 · US
Positive electrode for lithium ion battery, lithium ion battery and method of producing positive electrode for lithium ion battery
US-11664490-B2 · May 30, 2023 · US
Anti-scaling composition for water systems
US-11130691-B2 · Sep 28, 2021 · US
Positive electrode active material for potassium secondary battery and potassium secondary battery containing same
US-11075402-B2 · Jul 27, 2021 · US
Positive electrode material for secondary battery, method for manufacturing the same, and lithium-ion secondary battery
US-2021111406-A1 · Apr 15, 2021 · US
Mechanically stable composite electrolyte for intermediate temperature fuel cell with improved proton conductivity and methods thereof
US-10947117-B2 · Mar 16, 2021 · US
Positive electrode material for secondary battery, method for manufacturing the same, and lithium-ion secondary battery
US-10903493-B2 · Jan 26, 2021 · US
Positive electrode for lithium ion battery, lithium ion battery and method of producing positive electrode for lithium ion battery
US-2020403223-A1 · Dec 24, 2020 · US
Positive electrode active material for potassium secondary battery and potassium secondary battery containing same
US-2020313226-A1 · Oct 1, 2020 · US
Mechanically stable composite electrolyte for intermediate temperature fuel cell with improved proton conductivity and methods thereof
US-2019263661-A1 · Aug 29, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B25/42?
- CPC C01B25/42 is the Cooperative Patent Classification code for “Pyrophosphates.”
- How many patents are filed under CPC C01B25/42 (Pyrophosphates)?
- Our database includes 40 publications tagged with this CPC code.
- Is patent activity under CPC C01B25/42 growing?
- Publication counts under this code: 2 in 2024 vs 7 in 2025 (latest complete years).