Removing impurities from precursors
US-2025090975-A1 · Mar 20, 2025 · US
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Purification
Purification · 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 | C01F7/62 |
| Official title | Purification |
| Display label | Purification |
| Total patents | 5 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears stable based on the most recent years.
| Year | Patents |
|---|---|
| 2017 | 1 |
| 2018 | 2 |
| 2020 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for separating aluminum chloride from silanes
US-10584136-B2 · Mar 10, 2020 · US
Processes for the selective separation of iron and aluminium
US-10087501-B2 · Oct 2, 2018 · US
Process for separating aluminum chloride from silanes
US-2018170950-A1 · Jun 21, 2018 · US
Processes for the selective separation of iron and aluminium
US-2017218477-A1 · Aug 3, 2017 · US