Method for recovering phosphorus based on cyclic hydrothermal carbonization of wetland plants
US-2025382237-A1 · Dec 18, 2025 · US
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Fertilisers produced by pyrogenic processes from phosphatic materials
Fertilisers produced by pyrogenic processes from phosphatic materials · 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 | C05B13/00 |
| Official title | Fertilisers produced by pyrogenic processes from phosphatic materials |
| Display label | Fertilisers produced by pyrogenic processes from phosphatic materials |
| Total patents | 10 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2018 | 2 |
| 2019 | 2 |
| 2021 | 1 |
| 2022 | 1 |
| 2025 | 2 |
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-12497340-B1 · Dec 16, 2025 · US
Stable Aqueous Compositions of Fertilizer and Agriculturally Active Compound
US-2022332660-A1 · Oct 20, 2022 · US
Extrusion granulated urea-formaldehyde-based multi-nutrient slow/controlled release fertilizer and preparation method thereof
US-10906843-B2 · Feb 2, 2021 · US
Extrusion granulated urea-formaldehyde-based multi-nutrient slow/controlled release fertilizer and preparation method thereof
US-2019218152-A1 · Jul 18, 2019 · US
Production of citrate soluble phosphates by calcination of secondary phosphate sources with a sodium-sulfuric compound
US-10259752-B2 · Apr 16, 2019 · US
Layered fertilizer composition
US-10099966-B2 · Oct 16, 2018 · US
Production of citrate soluble phosphates by calcination of secondary phosphate sources with a sodium-sulfuric compound
US-2018244587-A1 · Aug 30, 2018 · US
Layered fertilizer composition
US-2016152523-A1 · Jun 2, 2016 · US
Fertilizer composition and method for preparing the same
US-9162932-B2 · Oct 20, 2015 · US