Method for removing phosphorus from phosphorus-containing substance, method for manufacturing raw material for metal smelting or raw material for metal refining, and method for manufacturing metal
US-12584187-B2 · Mar 24, 2026 · US
Removing sulfur, phosphorus or arsenic other than by roasting
Removing sulfur, phosphorus or arsenic other than by roasting · 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 | C22B1/11 |
| Official title | Removing sulfur, phosphorus or arsenic other than by roasting |
| Display label | Removing sulfur, phosphorus or arsenic other than by roasting |
| Total patents | 30 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 5 |
| 2025 | 1 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for recovering valuable metals
US-2026071294-A1 · Mar 12, 2026 · US
Selective sulfidation and desulfidation
US-12258672-B2 · Mar 25, 2025 · US
Methods for extracting rare earth elements from ion-adsorption clays
US-2024417827-A1 · Dec 19, 2024 · US
Hydrometallurgical treatment of ores or concentrates for removal of preg-robbing organic carbon material
US-2024376566-A1 · Nov 14, 2024 · US
Mineral processing method
US-2024327947-A1 · Oct 3, 2024 · US
Method for recovering valuable metals from waste lithium ion batteries
US-12027681-B2 · Jul 2, 2024 · US
Recycling method and use of lithium iron phosphate (lfp) waste
US-2024021904-A1 · Jan 18, 2024 · US
Method for removing phosphorus from phosphorus-containing substance
US-11649514-B2 · May 16, 2023 · US
Method for removing phosphorus from phosphorus-containing substance, method for manufacturing raw material for metal smelting or raw material for metal refining, and method for manufacturing metal
US-2022372591-A1 · Nov 24, 2022 · US
Method for preparing iron ore concentrates by recycling copper slag tailings
US-11293076-B2 · Apr 5, 2022 · US
Peptide binding to arsenic-containing mineral and use thereof
US-11254707-B2 · Feb 22, 2022 · US
Method for recovering valuable metals from waste lithium ion batteries
US-2021328283-A1 · Oct 21, 2021 · US
Method of leaching arsenic from ore comprising copper
US-11149328-B2 · Oct 19, 2021 · US
Selective sulfidation and desulfidation
US-2021277531-A1 · Sep 9, 2021 · US
Method for removing phosphorus from phosphorus-containing substance
US-2021071274-A1 · Mar 11, 2021 · US
Arsenic removal from lead concentrate by ozone treatment and reverse flotation
US-10822673-B1 · Nov 3, 2020 · US
Method for preparing iron ore concentrates by recycling copper slag tailings
US-2020332390-A1 · Oct 22, 2020 · US
Cationic flotation of silica and apatite from oxidized iron ores at natural pH
US-10786819-B2 · Sep 29, 2020 · US
Production method for low-sulfur iron ore
US-10596578-B2 · Mar 24, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B1/11?
- CPC C22B1/11 is the Cooperative Patent Classification code for “Removing sulfur, phosphorus or arsenic other than by roasting.”
- How many patents are filed under CPC C22B1/11 (Removing sulfur, phosphorus or arsenic other than by roasting)?
- Our database includes 30 publications tagged with this CPC code.
- Is patent activity under CPC C22B1/11 growing?
- Publication counts under this code: 5 in 2024 vs 1 in 2025 (latest complete years).