Process for the removal of heavy metals from a phosphoric acid containing composition using a flocculating agent
US-12545582-B2 · Feb 10, 2026 · US
Phosphine chalcogenides, e.g. compounds of the formula R3P=X with X = O, S, Se or Te · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C22B3/382 |
| Official title | {Phosphine chalcogenides, e.g. compounds of the formula R3P=X with X = O, S, Se or Te} |
| Display label | Phosphine chalcogenides, e.g. compounds of the formula R3P=X with X = O, S, Se or Te |
| Total patents | 24 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2018 | 2 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 8 |
| 2024 | 1 |
| 2025 | 5 |
| 2026 | 3 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12545582-B2 · Feb 10, 2026 · US
US-12545584-B2 · Feb 10, 2026 · US
US-12545583-B2 · Feb 10, 2026 · US
US-12508636-B2 · Dec 30, 2025 · US
US-12480179-B2 · Nov 25, 2025 · US
US-12467115-B2 · Nov 11, 2025 · US
US-12451533-B2 · Oct 21, 2025 · US
US-2025046900-A1 · Feb 6, 2025 · US
US-2024030510-A1 · Jan 25, 2024 · US
US-2023420761-A1 · Dec 28, 2023 · US
US-11807544-B2 · Nov 7, 2023 · US
US-2023234847-A1 · Jul 27, 2023 · US
US-2023227311-A1 · Jul 20, 2023 · US
US-2023219817-A1 · Jul 13, 2023 · US
US-2023218940-A1 · Jul 13, 2023 · US
US-2023138828-A1 · May 4, 2023 · US
US-2023049078-A1 · Feb 16, 2023 · US
US-2022298021-A1 · Sep 22, 2022 · US
US-11186895-B2 · Nov 30, 2021 · US
US-2020048737-A1 · Feb 13, 2020 · US